WO2019244838A1 - Focal-plane shutter and imaging device - Google Patents

Focal-plane shutter and imaging device Download PDF

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Publication number
WO2019244838A1
WO2019244838A1 PCT/JP2019/023912 JP2019023912W WO2019244838A1 WO 2019244838 A1 WO2019244838 A1 WO 2019244838A1 JP 2019023912 W JP2019023912 W JP 2019023912W WO 2019244838 A1 WO2019244838 A1 WO 2019244838A1
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WO
WIPO (PCT)
Prior art keywords
blade
focal plane
plane shutter
hole
arm
Prior art date
Application number
PCT/JP2019/023912
Other languages
French (fr)
Japanese (ja)
Inventor
健太 河上
光平 西村
Original Assignee
日本電産コパル株式会社
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
Priority claimed from JP2018160962A external-priority patent/JP7211736B2/en
Application filed by 日本電産コパル株式会社 filed Critical 日本電産コパル株式会社
Publication of WO2019244838A1 publication Critical patent/WO2019244838A1/en

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Classifications

    • 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
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/08—Shutters
    • G03B9/36—Sliding rigid plate

Definitions

  • One embodiment of the present invention relates to a focal plane shutter used for an imaging device such as a camera.
  • a shutter blade disposed in a blade chamber formed between a base plate and a cover plate is driven by a driving mechanism.
  • the open / close state of the opening is changed, and exposure is performed.
  • the respective components of the drive mechanism disposed outside the blade chamber slide and friction with each other, thereby generating abrasion powder and the like.
  • the particles may enter or abrasion powder may adhere to the image sensor.
  • wear powder enters the running space of the blade, the running of the blade may be affected.
  • Patent Document 1 discloses a configuration in which a wall is provided so that abrasion powder generated during the operation of the focal plane shutter does not easily enter the blade chamber.
  • Patent Document 2 discloses a configuration in which a shielding portion that can shield a blade through hole is provided.
  • Patent Document 3 discloses a configuration in which abrasion powder and the like are captured by an adhesive sheet.
  • Patent Document 4 discloses a focal plane shutter having a configuration in which adhesive members are provided on the surfaces of a plurality of arms.
  • a base plate (1) having an opening (1a), through holes (11, 12), and pivots (13, 14); A blade (4, 5) for switching between a state in which the opening is covered and a state in which the opening is opened;
  • An arm (61, 71, 161, 261, 271) that rotates about the rotation axis and is connected to the blade;
  • a drive pin (81, 82) that is arranged to penetrate the through hole, moves in a region where the through hole is formed, and is connected to the arm.
  • the arm has an extended portion (61b, 71b, 161b, 261b, 271b) formed so as to cover at least half of the through hole when the blade covers the opening. It is a focal plane shutter.
  • abrasion powder such as metal or resin generated outside the blade chamber passes through the through-hole and enters the blade chamber, or adheres to the imaging element through the blade chamber. Can be suppressed. Thereby, it is possible to suppress a malfunction of the blade due to the abrasion powder and a decrease in the quality of a captured image. Also, as compared with the conventional configuration of Patent Document 4, by adopting a configuration in which an extended portion covering at least half of the through hole is provided, it is possible to effectively prevent wear powder from entering the blade chamber. Has become.
  • the extended portions are formed so as not to protrude from the main plate in plan view when the blades open the opening.
  • the focal plane shutter having the above-described configuration, it is possible to prevent the extended portion from protruding from the area of the main plate of the focal plane shutter and coming into contact with another configuration to be damaged.
  • the extended portion is formed so as to cover the entire through hole (11, 12) when the blade covers the opening.
  • the focal plane shutter having the above configuration, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • the extension part is formed to protrude from the other part (61d, 161d, 261d) of the arm and extend in an arc along the formation region of the through hole.
  • the expansion portion can be formed into an effective shape to cover the through hole, so that the abrasion powder can be more effectively prevented from entering the blade chamber and the vicinity of the imaging element. be able to.
  • the extension has an adhesive disposed on a surface on the side of the through hole.
  • the focal plane shutter having the above configuration, it is possible to prevent the abrasion powder adhering to the expanded portion from being scattered again due to the repeated travel of the blade. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • the extension portion has a permanent magnet disposed on a surface on the side of the through hole.
  • the focal plane shutter having the above-described configuration, the metal powder generated by friction can be captured. Therefore, it is possible to suppress the metal powder from being scattered due to the repeated travel of the blade. Thereby, it is possible to effectively prevent the metal powder from entering the blade chamber and the vicinity of the image sensor.
  • the extended portion has a concave portion (61c, 71c) formed on the surface on the side of the through hole.
  • the wear powder can be easily confined in the concave portion, and it is possible to more effectively suppress the wear powder from entering the blade chamber and the vicinity of the image sensor.
  • An adhesive is arranged in the concave portions (61c, 71c).
  • the abrasion powder can be captured by the adhesive in the concave portion, so that the abrasion powder attached to the extended portion is more effectively prevented from being scattered again by repeated travel of the blade. Can be suppressed. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • a permanent magnet is arranged in the concave portions (61c, 71c).
  • the metal powder can be captured by the permanent magnet in the concave portion, so that the metal powder attached to the expansion portion is more effectively prevented from being scattered again by repeating the travel of the blade. Can be suppressed. Accordingly, it is possible to more effectively suppress the metal powder from entering the blade chamber and the vicinity of the image sensor.
  • the extension portion has a wall portion (261c, 271c) extending toward the through hole on a surface on the side of the through hole.
  • the focal plane shutter having the above-described configuration, even if the abrasion powder attached to the expansion portion attempts to fly when the blades travel repeatedly, the scattering can be suppressed by the wall portion. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • the wall portion (261c, 271c) is formed at or near the edge of the extension along the direction in which the through hole extends.
  • the focal plane shutter having the above-described configuration, it is possible to effectively prevent the abrasion powder adhering to the expanded portion from entering the blade chamber and the vicinity of the image sensor while enabling the wall to be formed relatively easily.
  • the wall is formed at both edges of the extension.
  • the wall portion can more effectively suppress the abrasion powder attached to the expansion portion from entering the blade chamber and the vicinity of the image sensor.
  • the wall portion is formed so as to surround part or all of the surface of the extension portion on the side of the through hole.
  • the focal plane shutter having the above-described configuration, it is possible to more effectively suppress the abrasion powder adhering to the extended portion from entering the blade chamber and the vicinity of the imaging element by the wall surrounding the through hole all around.
  • One of the focal plane shutters described above is suitably applied to an imaging device such as a camera.
  • a configuration can be provided in which dust such as abrasion powder is prevented from scattering and entering the blade chamber or adhering to the imaging element. As a result, it is possible to prevent a deterioration in the quality of an image picked up by the image pickup device while preventing an operation defect caused by abrasion powder.
  • FIG. 1 is a plan view of the focal plane shutter before the blade travels in the first embodiment.
  • FIG. 2 is a plan view of the focal plane shutter after the blade travels in the first embodiment.
  • FIG. 3 is a plan view of the main arm for the leading blade in the first embodiment.
  • FIG. 4 is a cross-sectional view of an extended portion of the leading blade main arm according to the first embodiment.
  • FIG. 5 is a plan view of a leading blade main arm in a comparative example.
  • FIG. 6 is a plan view of a main arm for a front blade in a modified example.
  • FIG. 7 is a plan view of the focal plane shutter before the blade travels in the second embodiment.
  • FIG. 8 is a plan view of the focal plane shutter after the blade travels in the second embodiment.
  • FIG. 9 is a plan view of the main arm for the leading blade in the second embodiment.
  • FIG. 10 is a cross-sectional view of an extended portion of the main arm for the leading blade according to the second embodiment.
  • the focal plane shutter of the present invention is used for an imaging device such as a digital camera, and is an extension for suppressing dust such as abrasion powder generated by the operation of the blades of the focal plane shutter from entering the blade chamber.
  • dust such as abrasion powder generated by the operation of the blades of the focal plane shutter from entering the blade chamber.
  • FIGS. 1 and 2 are plan views of the focal plane shutter of the present embodiment.
  • FIG. 1 shows a state before the blade travels
  • FIG. 2 shows a state after the blade travels.
  • FIG. 3 is an enlarged plan view of the main arm 61 for the leading blade.
  • FIG. 4 is a sectional view of the extended portion 61b of the main arm 61 for the leading blade.
  • the focal plane shutter includes a main plate 1, a cover plate 2, an intermediate plate 3, a front blade 4, a rear blade 5, a main arm 61 for a front blade, and a subarm for a front blade.
  • the arm 62 includes a main arm 71 for a rear blade, a slave arm 72 for a rear blade, a driving pin 81 for a front blade, and a driving pin 82 for a rear blade.
  • the leading blade 4 and the trailing blade 5 may be collectively referred to as “blades”.
  • the main arm 61 for the front blade and the main arm 71 for the rear blade may be collectively referred to as a “main arm”.
  • the leading arm 62 for the leading blade and the trailing arm 72 for the trailing blade may be collectively referred to as a “slave arm”.
  • the front blade drive pin 81 and the rear blade drive pin 82 may be collectively referred to as “drive pins”.
  • the base plate 1 is a substrate portion of the focal plane shutter and has a substantially rectangular opening 1a.
  • the opening 1a may have any shape other than a rectangle.
  • a drive including a front blade drive pin 81 and a rear blade drive pin 82 on the side of the opening 1 a of the main plate 1 (right side in the figure) outside a blade chamber described later. Part is mounted.
  • the driving unit includes an electromagnetic actuator for driving the driving pins, but the driving unit has the same configuration as that of the related art, so that illustration and specific description are omitted.
  • the main plate 1 rotatably supports a main arm 61 for a front blade in a blade chamber described later, and a rotation axis serving as a center of rotation of the main arm 61 for the front blade. 13.
  • the main plate 1 rotatably supports a main arm 71 for the rear blade in a blade chamber described later, and has a rotation shaft 14 that is a center of rotation of the main arm 71 for the rear blade.
  • Through holes 11 and 12 are formed in the base plate 1 along the movement trajectory of the front blade drive pin 81 and the rear blade drive pin 82.
  • the through holes 11 and 12 are long holes extending in an arc shape around the rotation shafts 13 and 14, respectively, and penetrate the main plate 1.
  • the driving pins 81 for the front blade and the driving pins 82 for the rear blade are inserted into the through holes 11 and 12.
  • the cover plate 2 is attached to the base plate 1 at a predetermined interval at a position facing the base plate 1.
  • the cover plate 2 is arranged at a position close to an image pickup device (not shown) in an image pickup apparatus equipped with a focal plane shutter.
  • the orientation of the base plate 1 and the cover plate 2 with respect to the position of the image sensor can be arbitrarily changed.
  • the intermediate plate 3 In the blade chamber between the main plate 1 and the cover plate 2, the intermediate plate 3, the front blade 4, the rear blade 5, the main arm 61 for the front blade, the sub arm 62 for the front blade, the main arm 71 for the rear blade, the rear blade A service arm 72 and the like are arranged.
  • a space formed by the base plate 1 and the cover plate 2 or a space formed by the base plate 1, the cover plate 2 and the intermediate plate 3 may be referred to as a “blade chamber”.
  • the cover plate 2 has an opening 2 a formed at a position facing the opening 1 a of the base plate 1.
  • the opening 2a has a rectangular shape similar to the opening 1a, but does not have to be a perfect rectangle, and may have an arbitrary shape other than a rectangle.
  • the intermediate plate 3 is arranged between the main plate 1 and the cover plate 2.
  • the rear blade 5, the main arm 71 for the rear blade, and the slave arm 72 for the rear blade are accommodated between the intermediate plate 3 and the main plate 1.
  • the front blade 4, the main arm 61 for the front blade, and the slave arm 62 for the front blade are accommodated between the intermediate plate 3 and the cover plate 2.
  • the intermediate plate 3 has a rectangular opening 3 a at a position facing the opening 1 a of the base plate 1 and the opening 2 a of the cover plate 2.
  • the opening 3a of the intermediate plate 3 may have any shape other than a rectangular shape.
  • the leading blade 4 is disposed in the blade chamber between the cover plate 2 and the intermediate plate 3 as described above.
  • the front blade 4 is composed of a plurality of plate-like members, and is connected to the front blade main arm 61 and the front blade sub-arm 62 by connecting tools such as rivets.
  • the front blade 4 is driven by the front blade drive pin 81 via the front blade main arm 61, and covers the exposure opening formed by the openings 1a, 2a and 3a, and opens (opens and closes). Switch.
  • the front blade 4 and the rear blade 5 are each formed of a material such as a metal such as aluminum, carbon fiber, or a resin, but are not limited to these materials.
  • the rear blade 5 is disposed in the blade chamber between the main plate 1 and the intermediate plate 3 as described above.
  • the rear blade 5 is composed of a plurality of plate-like members like the front blade 4, and is connected to the rear blade main arm 71 and the rear blade slave arm 72 by a connecting tool such as a rivet.
  • the rear blade 5 is driven by the rear blade drive pin 82 via the rear blade main arm 71, and covers the exposure opening formed by the openings 1a, 2a and 3a, and opens (opens and closes). Switch.
  • the main arm 61 for the front blade is disposed between the drive pin 81 for the front blade and the front blade 4, and is connected to the front blade 4 by a connecting tool.
  • the leading blade main arm 61 transmits the driving force generated by the drive unit to the leading blade 4 via the leading blade drive pin 81.
  • the main arm 61 for the front blade has the rotation shaft 13 of the main plate 1 inserted through the rotation shaft hole 61a, and rotates around the rotation shaft 13.
  • the leading blade main arm 61 includes a main body 61d and an extension 61b.
  • the main body 61d has a shape similar to that of a main body 361d in a comparative example described below that does not have the extension 61b, and the extension 61b has a shape protruding from the main body 61d.
  • the extension portion 61b is formed to extend in an arc along the region where the through hole 11 is formed.
  • the main arm 61 for the leading blade is a plate-shaped member. As shown in FIGS. 1 and 2, the extension portion 61b covers the entire through hole 11 when the front blade 4 covers the opening.
  • the extension portion 61b is located at a position away from the through hole 11, but is formed so as not to protrude from the base plate 1 in plan view. ing. As shown in the cross-sectional view of FIG. 4, the extension portion 61b has a groove-like concave portion 61c formed on the surface on the through hole 11 side. An adhesive that captures dust such as abrasion powder is disposed in the recess 61c.
  • the main arm 61 for the front blade, the main arm 71 for the rear blade, or a combination thereof is a configuration example of the “arm” of the present invention.
  • the rear blade main arm 71 is configured to drive the rear blade 5 and has the same configuration as the front blade main arm 61.
  • the rear blade main arm 71 is disposed between the rear blade drive pin 82 and the rear blade 5, and is connected to the rear blade 5 by a connector.
  • the rear blade main arm 71 transmits the driving force generated by the driving unit to the rear blade 5 via the rear blade drive pin 82.
  • the main arm 71 for the rear blade has the pivot shaft 14 of the main plate 1 inserted through the pivot shaft hole 71a, and rotates around the pivot shaft 14.
  • the rear blade main arm 71 is configured to include a main body (symbols omitted) and an extension 71b.
  • the extension portion 71b has a groove-like concave portion 71c formed on the surface on the through-hole 12 side. Since the main arm 71 for the rear blade has the same configuration as the main arm 61 for the front blade shown in FIG. 3, a specific description is omitted.
  • FIG. 5 is a configuration example of the main arm 361 having only the main body 361d without the extension 61b.
  • the main arm 361 has a main body 361d and a rotation shaft hole 361a.
  • the main arm 361 differs from the main arm 361 in that the main arm 61 for the front blade and the main arm 71 for the rear blade have an extended portion 61b which is a characteristic portion.
  • the leading blade slave arm 62 is connected to the leading blade 4 as described above.
  • the leading blade slave arm 62 is rotatably connected to the main plate 1.
  • the leading blade slave arm 62 does not receive a driving force directly from the drive unit, and operates in accordance with the operation of the leading blade main arm 61.
  • the rear arm 72 for the rear blade is connected to the rear blade 5 as described above.
  • the trailing arm 72 is rotatably connected to the main plate 1.
  • the rear arm 72 for the rear blade receives no driving force directly from the driving unit, and operates in accordance with the operation of the main arm 71 for the rear blade.
  • the front blade drive pin 81 and the rear blade drive pin 82 are each connected to a drive unit including an electromagnetic actuator and the like.
  • the front blade drive pin 81 and the rear blade drive pin 82 are formed of, for example, metal.
  • the drive unit is operated by electric power supplied from the outside, and transmits power to the front blade drive pin 81 and the rear blade drive pin 82.
  • the front blade drive pin 81 and the rear blade drive pin 82 are respectively connected to the front blade main arm 61 and the front blade slave arm 62 and the rear blade main arm 71 and the rear blade slave arm 72 via the front blade. 4 and the rear blade 5 are driven to adjust the open / close state of the opening 1a.
  • the running operation of the front blade 4 and the rear blade 5 is the same as the conventional configuration.
  • the front blade drive pin 81, the rear blade drive pin 82, or a combination thereof is a configuration example of the “drive pin” of the present invention.
  • the drive unit includes, for example, a permanent magnet, a yoke, a coil, a coil spring, and the like, in addition to the front blade drive pin 81 and the rear blade drive pin 82, and is operated by applied power.
  • the drive unit includes a conventionally known electromagnetic actuator or motor.
  • the imaging device mounted on the substrate is provided on the side opposite to the imaging target with respect to the focal plane shutter.
  • the imaging device is, for example, a CMOS sensor or a photoelectric conversion device such as a CCD.
  • the image sensor is arranged at a position overlapping with these openings 1a, 2a and 3a in plan view so as to receive light passing through the openings 1a, 2a and 3a (exposure openings).
  • FIG. 6 is a diagram showing a configuration example of the main arm 161 for the leading blade in such a modification.
  • the main arm 161 for the front blade has a plate shape and has an extended portion 161b protruding from the main body 161d.
  • the main arm 161 for the leading blade has a hole 161a for a rotating shaft. No recess is formed in the extension 161b.
  • the extension 161b is formed not to have a length that covers the entire through hole 11 but to have a length that covers a region equal to or more than ⁇ of the through hole 11.
  • the length of the extended portion 161b is not necessarily limited to this length, and a configuration that covers the entire through hole 11 is more effective in suppressing wear powder from entering the blade chamber and the like. It is a target.
  • the adhesive may be arranged on the surface of the extension portion 161b on the side of the through hole 11 at a height that does not contact the surface of the main plate 1 on the blade chamber side.
  • an adhesive may be disposed on the surface on the through hole 12 side in the same manner as the extended portion 161b of the front blade main arm 161.
  • the concave portion 61c has a configuration in which the adhesive that captures dust such as abrasion powder is disposed.
  • a configuration in which a magnet sheet that captures metal is disposed may be used instead of the adhesive.
  • the magnet sheet is formed of a plate-shaped (sheet-shaped) permanent magnet. With the configuration using such a magnet sheet, metal powder can be captured. Compared with a configuration using an adhesive, this is preferable in that there is no possibility that the member capturing the abrasion powder itself is scattered.
  • the focal plane shutter of the present embodiment allows the entire through hole 11 to be the main arm for the front blade.
  • the configuration is such that the extended portion 61b of 61 covers.
  • the focal plane shutter according to the present embodiment suppresses abrasion powder generated outside the blade chamber from passing through the through hole 11 and entering the blade chamber, or from passing through the blade chamber and adhering to the image sensor. can do. Further, it is possible to suppress a malfunction of the blade caused by the abrasion powder and a decrease in the quality of a captured image.
  • the rear arm main arm 71 may be configured as described above in place of the front blade main arm 61. Further, when both the main arm 61 for the front blade and the main arm 71 for the rear blade are configured as described above, it is more effective. In the following description, the configuration for the front blade 4 will be mainly described. However, the configuration for the rear blade 5 may be replaced with a configuration having the same characteristics for the front blade 4 and the rear blade 5. May be adopted.
  • the blades operate at a higher speed when traveling than when returning to the pre-traveling state, scattering of abrasion powder and the like is particularly likely to occur when the traveling is completed. Therefore, when adopting the configuration having no extension portion, and adopting the configuration having the extension portion on the side of the rear blade 5 where the through hole is opened when the traveling is completed, the extension portion is provided on the side of the leading blade 4. There is a case where it is more effective than the case where the configuration having the above is adopted.
  • the extended portion 61b does not project from the main plate 1 in plan view. And thus, it is possible to prevent the extended portion 61b from protruding from the area of the base plate 1 of the focal plane shutter and coming into contact with other components to be damaged.
  • the extension portion 61b is configured to protrude from the main body portion 61d of the main arm 61 for the leading blade and extend in an arc shape along the formation region of the through hole 11.
  • the extended portion 61b can be formed in an effective shape to cover the through hole 11, so that it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • the configuration is such that wear powder is easily confined in the concave portion 61c, and the wear powder enters the blade chamber and the vicinity of the image sensor. Can be suppressed more effectively.
  • the adhesive is disposed in the concave portion 61c formed on the through hole 11 side of the extended portion 61b so that the abrasion powder can be captured by the adhesive. It is possible to more effectively suppress the abrasion powder adhering to 61b from scattering again due to the repetition of travel of the blade. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • a configuration may be adopted in which the adhesive is disposed on the through hole 11 side of the expanded portion 61b without providing the concave portion. Even if such a configuration is adopted, a certain effect can be obtained in that the abrasion powder attached to the expansion portion 61b is prevented from scattering again due to the repetition of travel of the blade.
  • Embodiment 2 a second embodiment of the present invention will be specifically described with reference to FIGS.
  • This embodiment is different from the first embodiment in that the main arm 61 for the front blade and the main arm 71 for the rear blade are replaced with a main arm 261 for the front blade and a main arm 271 for the rear blade.
  • the configuration is common.
  • differences from the first embodiment will be mainly described, and description of points common to the first embodiment will be omitted.
  • FIGS. 7 and 8 are plan views of the focal plane shutter of the present embodiment.
  • FIG. 7 shows a state before the blade travels
  • FIG. 8 shows a state after the blade travels.
  • FIG. 9 is an enlarged plan view of the main arm 261 for the leading blade.
  • FIG. 10 is a cross-sectional view of the extended portion 261b of the main arm 261 for the leading blade.
  • the main arm 261 for the front blade is arranged between the drive pin 81 for the front blade and the front blade 4, and is connected to the front blade 4 by a connecting tool.
  • the leading blade main arm 261 transmits the driving force generated by the drive unit to the leading blade 4 via the leading blade drive pin 81.
  • the main arm 261 for the leading blade has the rotation shaft 13 of the base plate 1 inserted through the hole 261 a for the rotation shaft, and rotates around the rotation shaft 13.
  • the leading blade main arm 261 includes a main body 261d and an extension 261b.
  • the extension part 261b has a shape protruding from the main body part 261d.
  • the extension portion 261b is formed to extend in an arc shape along the region where the through hole 11 is formed. As shown in FIGS. 1 and 2, the extension portion 261b covers the entire through hole 11 when the leading blade 4 covers the opening.
  • the extension portion 261b is located at a position distant from the through hole 11, but is formed so as not to project from the base plate 1 in plan view. ing.
  • the extension 261b is different from the extension 61b of the first embodiment in that the extension 261b has a wall 261c instead of the recess 61c.
  • the extension part 261b has a wall part 261c formed to extend toward the through hole 11 side.
  • the wall portion 261c is formed by bending a portion of the expansion portion 261b corresponding to both sides in the direction in which the through hole 11 extends in the main arm 261 for the front blade in a plate shape.
  • the wall portion 261c is formed at a height that does not touch the main plate 1.
  • An adhesive is disposed on a portion of the extension 261b surrounded by the wall 261c.
  • the rear arm main arm 271 is configured to include a main body (symbols omitted) and an extension 271b.
  • the extension part 271b has a wall part 271c on the through hole 11 side.
  • the main arm 271 for the rear blade has the pivot shaft 14 of the main plate 1 inserted through the pivot shaft hole 271a, and rotates around the pivot shaft 14.
  • the main arm 271 for the rear blade has the same configuration as the main arm 261 for the front blade shown in FIGS. 9 and 10, and a detailed description thereof will be omitted.
  • the adhesive is arranged on the extended portion 261b surrounded by the wall 261c.
  • a magnet sheet for capturing a metal may be arranged.
  • the magnet sheet is formed of a plate-shaped (sheet-shaped) permanent magnet. With the configuration using such a magnet sheet, metal powder can be captured. Compared with a configuration using an adhesive, this is preferable in that there is no possibility that the member capturing the abrasion powder itself is scattered.
  • the focal plane shutter of the present embodiment has a configuration in which the wall portion 261c extending toward the through hole 11 is formed on the surface of the extension portion 261b on the side of the through hole 11. Therefore, even if the abrasion powder adhering to the extended portion 261b attempts to fly when the blades repeatedly travel, the wall can suppress the scattering. Thereby, it is possible to effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
  • the wall portion 261c can be configured to have a height higher than that of the concave portion 61c, which is preferable in that scattering of wear powder is suppressed.
  • the configuration having the concave portion 61c of the first embodiment may be more preferable.
  • the wall 261c is formed at the edge of the extension 261b along both sides in the direction in which the through-hole 11 extends. Such a configuration is preferable because the wall portion 261c can be formed relatively easily.
  • the wall 261c may be formed on one edge instead of both edges of the extension 261b. Even when such a configuration is employed, a certain effect can be obtained in that scattering of wear powder is suppressed.
  • the wall 261c may be formed at a position near the edge of the extension 261b instead of the edge. Even when such a configuration is employed, a certain effect can be obtained in that scattering of wear powder is suppressed.
  • the wall portion 261c is formed not only along both sides in the direction in which the through-hole 11 extends in the extension portion 261b, but also so as to continuously surround a predetermined region of the extension portion 261b from all sides by the wall portion 261c. It may be formed. In such a configuration, it is possible to more effectively suppress the abrasion powder adhering to the extended portion 261b from entering the blade chamber and the vicinity of the imaging element by the wall portion 261c surrounding the through hole 11 around the entire circumference. Further, even if the extended portion 261b provided with the wall portion 261c covers a half or more of the through hole 11, the extended portion 261b can prevent the abrasion powder from entering the blade chamber and adhering to the image sensor. A certain effect can be obtained.
  • the extended portion of the main arm of the focal plane shutter of each of the above embodiments has a shape extending from the main body along the direction in which the through hole extends, but is not necessarily limited to such a shape.
  • An enlarged shape may be employed as a whole.
  • the main arm may be larger and the main arm may be heavier than the shape of the embodiment.
  • the configuration in which the main arm has the extension is described. However, depending on the arrangement of the main arm and the slave arm, a configuration in which the slave arm has the extension may be adopted.
  • the front blade 4 and the rear blade 5 provided in the focal plane shutter have been described as having a plurality of blade members, respectively.
  • the front blade 4 and the rear blade 5 each have one blade member. May be provided.
  • the focal plane shutter including the front blade 4 and the rear blade 5 has been described. However, a configuration including only one of the front blade 4 and the rear blade 5 may be adopted. In this case, in the focal plane shutter of the embodiment, the configuration example including the intermediate plate 3 has been described, but a configuration not including the intermediate plate 3 may be adopted.
  • the present invention is suitably applied as a focal plane shutter of an imaging device such as a digital camera.

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  • Shutters For Cameras (AREA)

Abstract

This focal-plane shutter is configured to be provided with: a base plate having an opening, a through-hole, and a rotating shaft; a blade which switches between a state of covering the opening and a state of opening the opening; an arm which rotates about the rotating shaft and is connected to the blade; and a driving pin which is disposed through the through-hole, moves in a formation region of the through-hole, and is connected to the arm, wherein the arm has an expanded portion formed so as to cover one half or more of the through-hole in a state where the blade covers the opening.

Description

フォーカルプレンシャッタ、及び撮像装置Focal plane shutter and imaging device
　本発明の一態様は、カメラなどの撮像装置に用いられるフォーカルプレンシャッタなどに関する。 One embodiment of the present invention relates to a focal plane shutter used for an imaging device such as a camera.
　シャッタ羽根によって開口部（露光開口とも称する）を開閉することで撮像素子に対する露光を行うフォーカルプレンシャッタでは、地板とカバー板との間に形成された羽根室に配置されたシャッタ羽根を駆動機構により駆動することで開口部の開閉状態を変化させ、露光が行われる構成となっている。このようなフォーカルプレンシャッタでは、羽根の駆動に伴い、羽根室外に配置された駆動機構の各構成が互いに摺動して摩擦することにより摩耗粉などが発生し、羽根の走行空間に摩耗粉が侵入したり、摩耗粉が撮像素子に付着したりすることがある。羽根の走行空間に摩耗粉が侵入すると羽根の走行に影響を与える場合がある。また、撮像素子に摩耗粉が付着すると、撮像した画像の画質低下につながる場合がある。特許文献１には、フォーカルプレンシャッタの動作時に発生する摩耗粉が羽根室に侵入しにくいよう、壁を設けた構成が開示されている。特許文献２には、羽根用貫通孔を遮蔽し得る遮蔽部を設けた構成が開示されている。特許文献３には、粘着シートにより摩耗粉などを捕捉する構成が開示されている。特許文献４には、複数のアームの表面に粘着部材が設けられた構成のフォーカルプレンシャッタが開示されている。 In a focal plane shutter that exposes an image pickup device by opening and closing an opening (also referred to as an exposure opening) with shutter blades, a shutter blade disposed in a blade chamber formed between a base plate and a cover plate is driven by a driving mechanism. By driving, the open / close state of the opening is changed, and exposure is performed. In such a focal plane shutter, when the blades are driven, the respective components of the drive mechanism disposed outside the blade chamber slide and friction with each other, thereby generating abrasion powder and the like. In some cases, the particles may enter or abrasion powder may adhere to the image sensor. When wear powder enters the running space of the blade, the running of the blade may be affected. Further, if wear powder adheres to the image sensor, the quality of a captured image may be reduced. Patent Document 1 discloses a configuration in which a wall is provided so that abrasion powder generated during the operation of the focal plane shutter does not easily enter the blade chamber. Patent Document 2 discloses a configuration in which a shielding portion that can shield a blade through hole is provided. Patent Document 3 discloses a configuration in which abrasion powder and the like are captured by an adhesive sheet. Patent Document 4 discloses a focal plane shutter having a configuration in which adhesive members are provided on the surfaces of a plurality of arms.
特開２００３－２７０７００号公報JP 2003-270700 A 特開２００１－２９６５８１号公報JP 2001-296581 A 特開２００３－２８００６６号公報JP 2003-280066 A 特開２０１５－２１０４９４号公報JP 2015-210494 A
　しかしながら、従来構成のフォーカルプレンシャッタでは、摩耗粉の飛散抑制が不十分な場合があり、摩耗粉の飛散をさらに効果的に抑制する構成のフォーカルプレンシャッタが求められている。 However, in the conventional focal plane shutter, scattering of wear powder may not be sufficiently suppressed, and a focal plane shutter configured to more effectively suppress scattering of wear powder is required.
　本発明は、上記課題を解決するために次のような手段を採る。なお、以下の説明において、発明の理解を容易にするために図面中の符号等を括弧書きで付記するが、本発明の各構成要素はこれらの付記したものに限定されるものではなく、当業者が技術的に理解しうる範囲にまで広く解釈されるべきものである。 The present invention employs the following means to solve the above problems. In the following description, reference numerals and the like in the drawings are added in parentheses to facilitate understanding of the invention, but each component of the present invention is not limited to these additions, and the present invention is not limited thereto. It should be widely interpreted to a technically understandable range by the trader.
　本発明の一の手段は、
　開口部（１ａ）、貫通孔（１１、１２）、及び回動軸（１３、１４）を有する地板（１）と、
　前記開口部を覆う状態と開放する状態とを切り替える羽根（４、５）と、
　前記回動軸を中心に回動し、前記羽根に連結されたアーム（６１、７１、１６１、２６１、２７１）と、
　前記貫通孔を挿通して配置され、前記貫通孔の形成領域を移動し、前記アームと連結された駆動ピン（８１、８２）と、を備え、
　前記アームは、前記羽根が前記開口部を覆う状態のときに、前記貫通孔の１／２以上を覆うよう形成された拡張部（６１ｂ、７１ｂ、１６１ｂ、２６１ｂ、２７１ｂ）を有する、
　フォーカルプレンシャッタである。 One means of the present invention is:
A base plate (1) having an opening (1a), through holes (11, 12), and pivots (13, 14);
A blade (4, 5) for switching between a state in which the opening is covered and a state in which the opening is opened;
An arm (61, 71, 161, 261, 271) that rotates about the rotation axis and is connected to the blade;
A drive pin (81, 82) that is arranged to penetrate the through hole, moves in a region where the through hole is formed, and is connected to the arm.
The arm has an extended portion (61b, 71b, 161b, 261b, 271b) formed so as to cover at least half of the through hole when the blade covers the opening.
It is a focal plane shutter.
　上記構成のフォーカルプレンシャッタによれば、羽根室外で発生した金属または樹脂などの摩耗粉が貫通孔を通過して羽根室内に侵入したり、羽根室を通過して撮像素子に付着したりすることを抑制することができる。これにより、摩耗粉に起因する羽根の動作不具合、及び撮像した画像の画質の低下を抑制することができる。また、特許文献４の従来構成と比較すると、貫通孔の１／２以上を覆う拡張部を敢えて設ける構成とすることで、摩耗粉が羽根室内に侵入することを効果的に抑制可能な構成となっている。 According to the focal plane shutter having the above configuration, abrasion powder such as metal or resin generated outside the blade chamber passes through the through-hole and enters the blade chamber, or adheres to the imaging element through the blade chamber. Can be suppressed. Thereby, it is possible to suppress a malfunction of the blade due to the abrasion powder and a decrease in the quality of a captured image. Also, as compared with the conventional configuration of Patent Document 4, by adopting a configuration in which an extended portion covering at least half of the through hole is provided, it is possible to effectively prevent wear powder from entering the blade chamber. Has become.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部（６１ｂ、７１ｂ、１６１ｂ、２６１ｂ、２７１ｂ）は、前記羽根が前記開口部を開放する状態のときに、平面視で前記地板から突出しないよう形成されている。 In the focal plane shutter, preferably,
The extended portions (61b, 71b, 161b, 261b, 271b) are formed so as not to protrude from the main plate in plan view when the blades open the opening.
　上記構成のフォーカルプレンシャッタによれば、拡張部がフォーカルプレンシャッタの地板の領域からはみ出して他の構成と接触し破損してしまうことなどを防止することができる。 According to the focal plane shutter having the above-described configuration, it is possible to prevent the extended portion from protruding from the area of the main plate of the focal plane shutter and coming into contact with another configuration to be damaged.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記羽根が前記開口部を覆う状態のときに、前記貫通孔（１１、１２）の全体を覆うよう形成されている。 In the focal plane shutter, preferably,
The extended portion is formed so as to cover the entire through hole (11, 12) when the blade covers the opening.
　上記構成のフォーカルプレンシャッタによれば、摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 According to the focal plane shutter having the above configuration, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記アームの他の部分（６１ｄ、１６１ｄ、２６１ｄ）から突出し、前記貫通孔の形成領域に沿って円弧状に延びるよう形成されている。 In the focal plane shutter, preferably,
The extension part is formed to protrude from the other part (61d, 161d, 261d) of the arm and extend in an arc along the formation region of the through hole.
　上記構成のフォーカルプレンシャッタによれば、拡張部が貫通孔を覆うために効果的な形状とすることができるため、摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, the expansion portion can be formed into an effective shape to cover the through hole, so that the abrasion powder can be more effectively prevented from entering the blade chamber and the vicinity of the imaging element. be able to.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記貫通孔側の面に粘着剤が配置されている。 In the focal plane shutter, preferably,
The extension has an adhesive disposed on a surface on the side of the through hole.
　上記構成のフォーカルプレンシャッタによれば、拡張部に付着した摩耗粉が、羽根の走行が繰り返されることで再度飛散することを抑制することができる。これによって、摩耗粉が羽根室及び撮像素子近傍に侵入することをさらに効果的に抑制することができる。 According to the focal plane shutter having the above configuration, it is possible to prevent the abrasion powder adhering to the expanded portion from being scattered again due to the repeated travel of the blade. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記貫通孔側の面に永久磁石が配置されている。 In the focal plane shutter, preferably,
The extension portion has a permanent magnet disposed on a surface on the side of the through hole.
　上記構成のフォーカルプレンシャッタによれば、摩擦により発生した金属粉を捕捉可能な構成となるため、羽根の走行が繰り返されることで金属粉が飛散することを抑制することができる。これによって、金属粉が羽根室及び撮像素子近傍に侵入することを効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, the metal powder generated by friction can be captured. Therefore, it is possible to suppress the metal powder from being scattered due to the repeated travel of the blade. Thereby, it is possible to effectively prevent the metal powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記貫通孔側の面に凹部（６１ｃ、７１ｃ）が形成されている。 In the focal plane shutter, preferably,
The extended portion has a concave portion (61c, 71c) formed on the surface on the side of the through hole.
　上記構成のフォーカルプレンシャッタによれば、摩耗粉を凹部に閉じ込めやすい構成にし、摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, the wear powder can be easily confined in the concave portion, and it is possible to more effectively suppress the wear powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記凹部（６１ｃ、７１ｃ）には粘着剤が配置されている。 In the focal plane shutter, preferably,
An adhesive is arranged in the concave portions (61c, 71c).
　上記構成のフォーカルプレンシャッタによれば、摩耗粉を凹部の粘着剤により捕獲することができるため、拡張部に付着した摩耗粉が、羽根の走行が繰り返されることで再度飛散することをより効果的に抑制することができる。これによって、摩耗粉が羽根室及び撮像素子近傍に侵入することをさらに効果的に抑制することができる。 According to the focal plane shutter having the above configuration, the abrasion powder can be captured by the adhesive in the concave portion, so that the abrasion powder attached to the extended portion is more effectively prevented from being scattered again by repeated travel of the blade. Can be suppressed. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　または、上記フォーカルプレンシャッタにおいて、
　前記凹部（６１ｃ、７１ｃ）には永久磁石が配置されている。 Or, in the focal plane shutter,
A permanent magnet is arranged in the concave portions (61c, 71c).
　上記構成のフォーカルプレンシャッタによれば、金属粉を凹部の永久磁石により捕獲することができるため、拡張部に付着した金属粉が、羽根の走行が繰り返されることで再度飛散することをより効果的に抑制することができる。これによって、金属粉が羽根室及び撮像素子近傍に侵入することをさらに効果的に抑制することができる。 According to the focal plane shutter having the above configuration, the metal powder can be captured by the permanent magnet in the concave portion, so that the metal powder attached to the expansion portion is more effectively prevented from being scattered again by repeating the travel of the blade. Can be suppressed. Accordingly, it is possible to more effectively suppress the metal powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記拡張部は、前記貫通孔側の面に、前記貫通孔側に向かって延びる壁部（２６１ｃ、２７１ｃ）を有する。 In the focal plane shutter, preferably,
The extension portion has a wall portion (261c, 271c) extending toward the through hole on a surface on the side of the through hole.
　上記構成のフォーカルプレンシャッタによれば、拡張部に付着した摩耗粉が、羽根の走行が繰り返された場合に飛散しようとしても、壁部によって飛散を抑制することができる。これによって、摩耗粉が羽根室及び撮像素子近傍に侵入することをさらに効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, even if the abrasion powder attached to the expansion portion attempts to fly when the blades travel repeatedly, the scattering can be suppressed by the wall portion. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記壁部（２６１ｃ、２７１ｃ）は、前記貫通孔の延びる方向に沿って、前記拡張部の縁部または縁部近傍に形成される。 In the focal plane shutter, preferably,
The wall portion (261c, 271c) is formed at or near the edge of the extension along the direction in which the through hole extends.
　上記構成のフォーカルプレンシャッタによれば、比較的容易に壁部を形成可能にしつつ、拡張部に付着した摩耗粉が羽根室及び撮像素子近傍に侵入することを効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, it is possible to effectively prevent the abrasion powder adhering to the expanded portion from entering the blade chamber and the vicinity of the image sensor while enabling the wall to be formed relatively easily.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記壁部は、前記拡張部の両縁部に形成される。 In the focal plane shutter, preferably,
The wall is formed at both edges of the extension.
　上記構成のフォーカルプレンシャッタによれば、壁部によって、拡張部に付着した摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 According to the focal plane shutter having the above configuration, the wall portion can more effectively suppress the abrasion powder attached to the expansion portion from entering the blade chamber and the vicinity of the image sensor.
　上記フォーカルプレンシャッタにおいて、好ましくは、
　前記壁部は、前記拡張部の前記貫通孔側の面の一部または全部を囲むよう形成される。 In the focal plane shutter, preferably,
The wall portion is formed so as to surround part or all of the surface of the extension portion on the side of the through hole.
　上記構成のフォーカルプレンシャッタによれば、拡張部に付着した摩耗粉が羽根室及び撮像素子近傍に侵入することを、貫通孔を全周囲で囲む壁部によってより効果的に抑制することができる。 According to the focal plane shutter having the above-described configuration, it is possible to more effectively suppress the abrasion powder adhering to the extended portion from entering the blade chamber and the vicinity of the imaging element by the wall surrounding the through hole all around.
　上記いずれかのフォーカルプレンシャッタは、カメラなどの撮像装置に好適に適用される。 い ず れ One of the focal plane shutters described above is suitably applied to an imaging device such as a camera.
　上記のような撮像装置によれば、摩耗粉などの塵埃が飛散して羽根室に侵入したり、撮像素子に付着したりすることを抑制した構成にすることができる。これによって、摩耗粉に起因する動作不具合を防止しつつ、撮像装置で撮像される画像の品質の低下を抑制することなどが可能となる。 According to the imaging apparatus as described above, a configuration can be provided in which dust such as abrasion powder is prevented from scattering and entering the blade chamber or adhering to the imaging element. As a result, it is possible to prevent a deterioration in the quality of an image picked up by the image pickup device while preventing an operation defect caused by abrasion powder.
図１は、実施形態１における羽根走行前のフォーカルプレンシャッタの平面図である。FIG. 1 is a plan view of the focal plane shutter before the blade travels in the first embodiment. 図２は、実施形態１における羽根走行後のフォーカルプレンシャッタの平面図である。FIG. 2 is a plan view of the focal plane shutter after the blade travels in the first embodiment. 図３は、実施形態１における先羽根用主アームの平面図である。FIG. 3 is a plan view of the main arm for the leading blade in the first embodiment. 図４は、実施形態１における先羽根用主アームの拡張部の断面図である。FIG. 4 is a cross-sectional view of an extended portion of the leading blade main arm according to the first embodiment. 図５は、比較例における先羽根用主アームの平面図である。FIG. 5 is a plan view of a leading blade main arm in a comparative example. 図６は、変形例における先羽根用主アームの平面図である。FIG. 6 is a plan view of a main arm for a front blade in a modified example. 図７は、実施形態２における羽根走行前のフォーカルプレンシャッタの平面図である。FIG. 7 is a plan view of the focal plane shutter before the blade travels in the second embodiment. 図８は、実施形態２における羽根走行後のフォーカルプレンシャッタの平面図である。FIG. 8 is a plan view of the focal plane shutter after the blade travels in the second embodiment. 図９は、実施形態２における先羽根用主アームの平面図である。FIG. 9 is a plan view of the main arm for the leading blade in the second embodiment. 図１０は、実施形態２における先羽根用主アームの拡張部の断面図である。FIG. 10 is a cross-sectional view of an extended portion of the main arm for the leading blade according to the second embodiment.
　本発明のフォーカルプレンシャッタは、デジタルカメラなどの撮像装置に利用されるものであり、フォーカルプレンシャッタの羽根の動作により発生する摩耗粉などの塵埃が羽根室に侵入することを抑制するための拡張部などの構成に特徴のひとつがある。 The focal plane shutter of the present invention is used for an imaging device such as a digital camera, and is an extension for suppressing dust such as abrasion powder generated by the operation of the blades of the focal plane shutter from entering the blade chamber. There is one of the features in the configuration of the parts.
　本発明に係る実施形態について、以下の構成に従って図面を参照しながら具体的に説明する。ただし、以下で説明する実施形態はあくまで本発明の一例にすぎず、本発明の技術的範囲を限定的に解釈させるものではない。なお、各図面において、同一の構成要素には同一の符号を付しており、その説明を省略する場合がある。
　１．実施形態１
　２．実施形態２
　３．補足事項 An embodiment according to the present invention will be specifically described with reference to the drawings according to the following configuration. However, the embodiments described below are merely examples of the present invention, and do not limit the technical scope of the present invention. In the drawings, the same components are denoted by the same reference numerals, and description thereof may be omitted.
1. Embodiment 1
2. Embodiment 2
3. Supplementary information
　＜１．実施形態１＞
　まず、本発明の実施形態１について具体的に説明する。 <1. First Embodiment>
First, Embodiment 1 of the present invention will be specifically described.
　図１及び図２は、本実施形態のフォーカルプレンシャッタの平面図であって、図１は羽根走行前の状態を示し、図２は羽根走行後の状態を示している。図３は、先羽根用主アーム６１の拡大平面図である。図４は、先羽根用主アーム６１の拡張部６１ｂの断面図である。 FIGS. 1 and 2 are plan views of the focal plane shutter of the present embodiment. FIG. 1 shows a state before the blade travels, and FIG. 2 shows a state after the blade travels. FIG. 3 is an enlarged plan view of the main arm 61 for the leading blade. FIG. 4 is a sectional view of the extended portion 61b of the main arm 61 for the leading blade.
　図１及び図２に示されるように、本実施形態のフォーカルプレンシャッタは、地板１、カバー板２、中間板３、先羽根４、後羽根５、先羽根用主アーム６１、先羽根用従アーム６２、後羽根用主アーム７１、後羽根用従アーム７２、先羽根用駆動ピン８１、及び後羽根用駆動ピン８２を含んで構成される。先羽根４及び後羽根５を「羽根」と総称することがある。先羽根用主アーム６１及び後羽根用主アーム７１を「主アーム」と総称することがある。先羽根用従アーム６２及び後羽根用従アーム７２を「従アーム」と総称することがある。先羽根用駆動ピン８１及び後羽根用駆動ピン８２を「駆動ピン」と総称することがある。 As shown in FIGS. 1 and 2, the focal plane shutter according to the present embodiment includes a main plate 1, a cover plate 2, an intermediate plate 3, a front blade 4, a rear blade 5, a main arm 61 for a front blade, and a subarm for a front blade. The arm 62 includes a main arm 71 for a rear blade, a slave arm 72 for a rear blade, a driving pin 81 for a front blade, and a driving pin 82 for a rear blade. The leading blade 4 and the trailing blade 5 may be collectively referred to as “blades”. The main arm 61 for the front blade and the main arm 71 for the rear blade may be collectively referred to as a “main arm”. The leading arm 62 for the leading blade and the trailing arm 72 for the trailing blade may be collectively referred to as a “slave arm”. The front blade drive pin 81 and the rear blade drive pin 82 may be collectively referred to as “drive pins”.
　　＜地板１＞
　地板１は、フォーカルプレンシャッタの基板部分であって、略矩形状の開口部１ａを有している。開口部１ａは、矩形以外の任意の形状であってもよい。図１及び図２に示されるように、地板１の開口部１ａの側方（図の右側）には後述する羽根室の外側に先羽根用駆動ピン８１及び後羽根用駆動ピン８２を含む駆動部が搭載される。駆動部は、上記駆動ピンを駆動するための電磁アクチュエータなどを備えるが、従来構成と同様であるため、図示及び具体的な説明を省略する。 <Main plate 1>
The base plate 1 is a substrate portion of the focal plane shutter and has a substantially rectangular opening 1a. The opening 1a may have any shape other than a rectangle. As shown in FIGS. 1 and 2, a drive including a front blade drive pin 81 and a rear blade drive pin 82 on the side of the opening 1 a of the main plate 1 (right side in the figure) outside a blade chamber described later. Part is mounted. The driving unit includes an electromagnetic actuator for driving the driving pins, but the driving unit has the same configuration as that of the related art, so that illustration and specific description are omitted.
　地板１は、図１、図２に示されるように、後述する羽根室内に先羽根用主アーム６１を回動可能に支持し、先羽根用主アーム６１の回動の中心となる回動軸１３を有する。地板１は、後述する羽根室内に後羽根用主アーム７１を回動可能に支持し、後羽根用主アーム７１の回動の中心となる回動軸１４を有する。地板１には、先羽根用駆動ピン８１及び後羽根用駆動ピン８２の移動軌跡に沿って、貫通孔１１及び１２が形成されている。貫通孔１１及び１２は、それぞれ回動軸１３及び１４を中心として円弧状に延びる長孔であって、地板１を貫通している。貫通孔１１及び１２には、先羽根用駆動ピン８１及び後羽根用駆動ピン８２が挿通される。 As shown in FIGS. 1 and 2, the main plate 1 rotatably supports a main arm 61 for a front blade in a blade chamber described later, and a rotation axis serving as a center of rotation of the main arm 61 for the front blade. 13. The main plate 1 rotatably supports a main arm 71 for the rear blade in a blade chamber described later, and has a rotation shaft 14 that is a center of rotation of the main arm 71 for the rear blade. Through holes 11 and 12 are formed in the base plate 1 along the movement trajectory of the front blade drive pin 81 and the rear blade drive pin 82. The through holes 11 and 12 are long holes extending in an arc shape around the rotation shafts 13 and 14, respectively, and penetrate the main plate 1. The driving pins 81 for the front blade and the driving pins 82 for the rear blade are inserted into the through holes 11 and 12.
　　＜カバー板２＞
　カバー板２は、地板１と対向する位置に、地板１に対して所定の間隔を空けて取り付けられる。カバー板２は、フォーカルプレンシャッタが搭載された撮像装置において、撮像素子（図示省略）に近い位置に配置される。ただし、撮像素子の位置に対する地板１及びカバー板２の向きは任意に変更可能である。地板１とカバー板２との間の羽根室には、中間板３、先羽根４、後羽根５、先羽根用主アーム６１、先羽根用従アーム６２、後羽根用主アーム７１、後羽根用従アーム７２などが配置される。地板１とカバー板２とにより形成された空間、または地板１及びカバー板２と中間板３とにより形成された空間を、「羽根室」と称することがある。カバー板２は、地板１の開口部１ａに対向する位置に形成された開口部２ａを有する。開口部２ａは、開口部１ａと類似の矩形状であるが、完全な矩形状ではなくてもよいし、矩形以外の任意の形状であってもよい。 <Cover plate 2>
The cover plate 2 is attached to the base plate 1 at a predetermined interval at a position facing the base plate 1. The cover plate 2 is arranged at a position close to an image pickup device (not shown) in an image pickup apparatus equipped with a focal plane shutter. However, the orientation of the base plate 1 and the cover plate 2 with respect to the position of the image sensor can be arbitrarily changed. In the blade chamber between the main plate 1 and the cover plate 2, the intermediate plate 3, the front blade 4, the rear blade 5, the main arm 61 for the front blade, the sub arm 62 for the front blade, the main arm 71 for the rear blade, the rear blade A service arm 72 and the like are arranged. A space formed by the base plate 1 and the cover plate 2 or a space formed by the base plate 1, the cover plate 2 and the intermediate plate 3 may be referred to as a “blade chamber”. The cover plate 2 has an opening 2 a formed at a position facing the opening 1 a of the base plate 1. The opening 2a has a rectangular shape similar to the opening 1a, but does not have to be a perfect rectangle, and may have an arbitrary shape other than a rectangle.
　　＜中間板３＞
　中間板３は、地板１とカバー板２との間に配置される。中間板３と地板１との間には、後羽根５、後羽根用主アーム７１、及び後羽根用従アーム７２が収容される。中間板３とカバー板２との間には、先羽根４、先羽根用主アーム６１、及び先羽根用従アーム６２が収容される。中間板３は、地板１の開口部１ａ及びカバー板２の開口部２ａに対向する位置に、矩形状の開口部３ａを有する。開口部１ａ及び２ａ同様、中間板３の開口部３ａも矩形状ではない任意の形状であってもよい。 <Intermediate plate 3>
The intermediate plate 3 is arranged between the main plate 1 and the cover plate 2. The rear blade 5, the main arm 71 for the rear blade, and the slave arm 72 for the rear blade are accommodated between the intermediate plate 3 and the main plate 1. The front blade 4, the main arm 61 for the front blade, and the slave arm 62 for the front blade are accommodated between the intermediate plate 3 and the cover plate 2. The intermediate plate 3 has a rectangular opening 3 a at a position facing the opening 1 a of the base plate 1 and the opening 2 a of the cover plate 2. Like the openings 1a and 2a, the opening 3a of the intermediate plate 3 may have any shape other than a rectangular shape.
　　＜先羽根４＞
　先羽根４は、上記のようにカバー板２と中間板３との間の羽根室に配置される。先羽根４は、複数の板状部材からなり、リベットなどの連結具によって、先羽根用主アーム６１及び先羽根用従アーム６２に連結される。先羽根４は、先羽根用主アーム６１を介して、先羽根用駆動ピン８１により駆動され、開口部１ａ、２ａ及び３ａにより形成される露光開口を覆う状態と開放する状態と（開閉状態）を切り替える。先羽根４及び後羽根５は、それぞれアルミニウムなどの金属、カーボンファイバー、または樹脂などの素材により形成されるが、これらの素材に限定されるものではない。 <First wing 4>
The leading blade 4 is disposed in the blade chamber between the cover plate 2 and the intermediate plate 3 as described above. The front blade 4 is composed of a plurality of plate-like members, and is connected to the front blade main arm 61 and the front blade sub-arm 62 by connecting tools such as rivets. The front blade 4 is driven by the front blade drive pin 81 via the front blade main arm 61, and covers the exposure opening formed by the openings 1a, 2a and 3a, and opens (opens and closes). Switch. The front blade 4 and the rear blade 5 are each formed of a material such as a metal such as aluminum, carbon fiber, or a resin, but are not limited to these materials.
　　＜後羽根５＞
　後羽根５は、上記のように地板１と中間板３との間の羽根室に配置される。後羽根５は、先羽根４と同様に複数の板状部材からなり、リベットなどの連結具によって、後羽根用主アーム７１及び後羽根用従アーム７２に連結される。後羽根５は、後羽根用主アーム７１を介して、後羽根用駆動ピン８２により駆動され、開口部１ａ、２ａ及び３ａにより形成される露光開口を覆う状態と開放する状態と（開閉状態）を切り替える。 <Back wing 5>
The rear blade 5 is disposed in the blade chamber between the main plate 1 and the intermediate plate 3 as described above. The rear blade 5 is composed of a plurality of plate-like members like the front blade 4, and is connected to the rear blade main arm 71 and the rear blade slave arm 72 by a connecting tool such as a rivet. The rear blade 5 is driven by the rear blade drive pin 82 via the rear blade main arm 71, and covers the exposure opening formed by the openings 1a, 2a and 3a, and opens (opens and closes). Switch.
　　＜先羽根用主アーム６１＞
　先羽根用主アーム６１は、先羽根用駆動ピン８１と先羽根４との間に配置され、連結具によって先羽根４に連結される。先羽根用主アーム６１は、駆動部で発生した駆動力を、先羽根用駆動ピン８１を介して先羽根４に伝達する。先羽根用主アーム６１は、地板１の回動軸１３が回動軸用孔６１ａに挿通しており、回動軸１３を中心として回転する。 <Main arm 61 for front blade>
The main arm 61 for the front blade is disposed between the drive pin 81 for the front blade and the front blade 4, and is connected to the front blade 4 by a connecting tool. The leading blade main arm 61 transmits the driving force generated by the drive unit to the leading blade 4 via the leading blade drive pin 81. The main arm 61 for the front blade has the rotation shaft 13 of the main plate 1 inserted through the rotation shaft hole 61a, and rotates around the rotation shaft 13.
　先羽根用主アーム６１は、本体部６１ｄと、拡張部６１ｂとを含む。本体部６１ｄは拡張部６１ｂを有さない後述の比較例における本体部３６１ｄと同様の形状であり、拡張部６１ｂは本体部６１ｄから突出した形状である。拡張部６１ｂは、貫通孔１１の形成領域に沿って円弧状に延びるよう形成されている。先羽根用主アーム６１は、板状の部材である。拡張部６１ｂは、図１及び図２に示されるように、先羽根４が開口部を覆う状態のときに、貫通孔１１の全体を覆う。一方、先羽根４が開口部を開放する状態（開口部から退避した状態）のときには、拡張部６１ｂは貫通孔１１から離れた場所に位置するが、平面視で地板１から突出しないよう形成されている。拡張部６１ｂは、図４の断面図に示されるように、貫通孔１１側の面に形成された溝状の凹部６１ｃを有する。凹部６１ｃには、摩耗粉などの塵埃を捕捉する粘着剤が配置される。先羽根用主アーム６１、後羽根用主アーム７１、またはこれらの組み合わせは、本発明の「アーム」の構成例である。 The leading blade main arm 61 includes a main body 61d and an extension 61b. The main body 61d has a shape similar to that of a main body 361d in a comparative example described below that does not have the extension 61b, and the extension 61b has a shape protruding from the main body 61d. The extension portion 61b is formed to extend in an arc along the region where the through hole 11 is formed. The main arm 61 for the leading blade is a plate-shaped member. As shown in FIGS. 1 and 2, the extension portion 61b covers the entire through hole 11 when the front blade 4 covers the opening. On the other hand, when the leading blade 4 opens the opening (retreats from the opening), the extension portion 61b is located at a position away from the through hole 11, but is formed so as not to protrude from the base plate 1 in plan view. ing. As shown in the cross-sectional view of FIG. 4, the extension portion 61b has a groove-like concave portion 61c formed on the surface on the through hole 11 side. An adhesive that captures dust such as abrasion powder is disposed in the recess 61c. The main arm 61 for the front blade, the main arm 71 for the rear blade, or a combination thereof is a configuration example of the “arm” of the present invention.
　　＜後羽根用主アーム７１＞
　後羽根用主アーム７１は、後羽根５を駆動するための構成であって、先羽根用主アーム６１と同様の構成である。後羽根用主アーム７１は、後羽根用駆動ピン８２と後羽根５との間に配置され、連結具によって後羽根５に連結される。後羽根用主アーム７１は、駆動部で発生した駆動力を、後羽根用駆動ピン８２を介して後羽根５に伝達する。後羽根用主アーム７１は、地板１の回動軸１４が回動軸用孔７１ａに挿通しており、回動軸１４を中心として回転する。 <Main arm 71 for rear blade>
The rear blade main arm 71 is configured to drive the rear blade 5 and has the same configuration as the front blade main arm 61. The rear blade main arm 71 is disposed between the rear blade drive pin 82 and the rear blade 5, and is connected to the rear blade 5 by a connector. The rear blade main arm 71 transmits the driving force generated by the driving unit to the rear blade 5 via the rear blade drive pin 82. The main arm 71 for the rear blade has the pivot shaft 14 of the main plate 1 inserted through the pivot shaft hole 71a, and rotates around the pivot shaft 14.
　後羽根用主アーム７１は、本体部（符号省略）と、拡張部７１ｂとを含んで構成される。拡張部７１ｂは、貫通孔１２側の面に形成された溝状の凹部７１ｃを有する。後羽根用主アーム７１は、図３に示される先羽根用主アーム６１と同様の構成であるため、具体的な説明を省略する。 主 The rear blade main arm 71 is configured to include a main body (symbols omitted) and an extension 71b. The extension portion 71b has a groove-like concave portion 71c formed on the surface on the through-hole 12 side. Since the main arm 71 for the rear blade has the same configuration as the main arm 61 for the front blade shown in FIG. 3, a specific description is omitted.
　　＜主アームの比較例＞
　図５は、拡張部６１ｂを有さず、本体部３６１ｄのみを有する主アーム３６１の構成例である。主アーム３６１は、本体部３６１ｄと、回動軸用孔３６１ａを有する。当該主アーム３６１と比較すると、上記の先羽根用主アーム６１及び後羽根用主アーム７１は、特徴部分である拡張部６１ｂを有する点で相違している。 <Comparative example of main arm>
FIG. 5 is a configuration example of the main arm 361 having only the main body 361d without the extension 61b. The main arm 361 has a main body 361d and a rotation shaft hole 361a. The main arm 361 differs from the main arm 361 in that the main arm 61 for the front blade and the main arm 71 for the rear blade have an extended portion 61b which is a characteristic portion.
　　＜先羽根用従アーム６２及び後羽根用従アーム７２＞
　先羽根用従アーム６２は、上記のように先羽根４に連結される。先羽根用従アーム６２は、地板１に回動自在に連結される。先羽根用従アーム６２は、駆動部から直接駆動力は与えられず、先羽根用主アーム６１の作動に合わせて作動する。後羽根用従アーム７２は、上記のように後羽根５に連結される。後羽根用従アーム７２は、地板１に回動自在に連結される。後羽根用従アーム７２は、駆動部から直接駆動力は与えられず、後羽根用主アーム７１の作動に合わせて作動する。 <Slave arm 62 for front blade and slave arm 72 for rear blade>
The leading blade slave arm 62 is connected to the leading blade 4 as described above. The leading blade slave arm 62 is rotatably connected to the main plate 1. The leading blade slave arm 62 does not receive a driving force directly from the drive unit, and operates in accordance with the operation of the leading blade main arm 61. The rear arm 72 for the rear blade is connected to the rear blade 5 as described above. The trailing arm 72 is rotatably connected to the main plate 1. The rear arm 72 for the rear blade receives no driving force directly from the driving unit, and operates in accordance with the operation of the main arm 71 for the rear blade.
　　＜先羽根用駆動ピン８１及び後羽根用駆動ピン８２＞
　先羽根用駆動ピン８１及び後羽根用駆動ピン８２は、それぞれ電磁アクチュエータなどを含む駆動部に連結される。先羽根用駆動ピン８１及び後羽根用駆動ピン８２は、例えば金属で形成される。駆動部は、外部から与えられる電力によって作動して、先羽根用駆動ピン８１及び後羽根用駆動ピン８２に動力を伝達する。先羽根用駆動ピン８１及び後羽根用駆動ピン８２は、それぞれ先羽根用主アーム６１及び先羽根用従アーム６２、並びに後羽根用主アーム７１及び後羽根用従アーム７２を介して、先羽根４及び後羽根５を駆動して開口部１ａの開閉状態を調整する。先羽根４及び後羽根５の走行作動については、従来構成と同様である。先羽根用駆動ピン８１、後羽根用駆動ピン８２、またはこれらの組み合わせは、本発明の「駆動ピン」の構成例である。 <Drive Pin 81 for Front Blade and Drive Pin 82 for Rear Blade>
The front blade drive pin 81 and the rear blade drive pin 82 are each connected to a drive unit including an electromagnetic actuator and the like. The front blade drive pin 81 and the rear blade drive pin 82 are formed of, for example, metal. The drive unit is operated by electric power supplied from the outside, and transmits power to the front blade drive pin 81 and the rear blade drive pin 82. The front blade drive pin 81 and the rear blade drive pin 82 are respectively connected to the front blade main arm 61 and the front blade slave arm 62 and the rear blade main arm 71 and the rear blade slave arm 72 via the front blade. 4 and the rear blade 5 are driven to adjust the open / close state of the opening 1a. The running operation of the front blade 4 and the rear blade 5 is the same as the conventional configuration. The front blade drive pin 81, the rear blade drive pin 82, or a combination thereof is a configuration example of the “drive pin” of the present invention.
　駆動部は、先羽根用駆動ピン８１及び後羽根用駆動ピン８２に加え、例えば、永久磁石、ヨーク、コイル、及びコイルばねなどを含み、与えられた電力によって作動する。駆動部は、従来から知られる電磁アクチュエータ、またはモータを含む。 The drive unit includes, for example, a permanent magnet, a yoke, a coil, a coil spring, and the like, in addition to the front blade drive pin 81 and the rear blade drive pin 82, and is operated by applied power. The drive unit includes a conventionally known electromagnetic actuator or motor.
　本実施形態のフォーカルプレンシャッタを含んで構成される撮像装置では、フォーカルプレンシャッタに対して撮像対象とは反対側に、基板に搭載された撮像素子を備える。撮像素子は、例えばＣＭＯＳセンサ、またはＣＣＤなどの光電変換素子である。撮像素子は、開口部１ａ、２ａ及び３ａ（露光開口）を通過した光を受光するよう、平面視でこれらの開口部１ａ、２ａ及び３ａに重なる位置に配置される。 In the imaging apparatus including the focal plane shutter of the present embodiment, the imaging device mounted on the substrate is provided on the side opposite to the imaging target with respect to the focal plane shutter. The imaging device is, for example, a CMOS sensor or a photoelectric conversion device such as a CCD. The image sensor is arranged at a position overlapping with these openings 1a, 2a and 3a in plan view so as to receive light passing through the openings 1a, 2a and 3a (exposure openings).
　　＜変形例１＞
　本実施形態のフォーカルプレンシャッタにおける先羽根用主アーム６１及び後羽根用主アーム７１は、拡張部６１ｂに凹部６１ｃが形成された構成であったが、凹部６１ｃが形成されない構成を採用してもよい。図６は、このような変形例における先羽根用主アーム１６１の構成例を示す図である。先羽根用主アーム１６１は、板状であって、本体部１６１ｄから突出する拡張部１６１ｂを有する。先羽根用主アーム１６１は、回動軸用孔１６１ａを有する。拡張部１６１ｂには凹部は形成されていない。また、拡張部１６１ｂは、貫通孔１１の全体を覆う長さではなく、貫通孔１１の１／２以上の領域を覆う長さで形成されている。拡張部１６１ｂの長さは、必ずしもこの長さに限定されるものではなく、貫通孔１１の全体を覆う構成にするほうが、摩耗粉が羽根室等に侵入することを抑制するためにはより効果的である。また、この変形例の場合にも、拡張部１６１ｂの貫通孔１１側の面に、地板１の羽根室側の面に接触しない程度の高さに粘着剤を配置してもよい。さらに、説明を省略した後羽根用主アームにおいても、先羽根用主アーム１６１の拡張部１６１ｂと同様にして貫通孔１２側の面に粘着剤を配置してもよい。このように粘着剤を配置することにより、磨耗粉の羽根室等への侵入を一層確実に抑制することができる。 <Modification 1>
The main arm 61 for the front blade and the main arm 71 for the rear blade in the focal plane shutter according to the present embodiment have the configuration in which the concave portion 61c is formed in the expansion portion 61b, but may adopt a configuration in which the concave portion 61c is not formed. Good. FIG. 6 is a diagram showing a configuration example of the main arm 161 for the leading blade in such a modification. The main arm 161 for the front blade has a plate shape and has an extended portion 161b protruding from the main body 161d. The main arm 161 for the leading blade has a hole 161a for a rotating shaft. No recess is formed in the extension 161b. Further, the extension 161b is formed not to have a length that covers the entire through hole 11 but to have a length that covers a region equal to or more than の of the through hole 11. The length of the extended portion 161b is not necessarily limited to this length, and a configuration that covers the entire through hole 11 is more effective in suppressing wear powder from entering the blade chamber and the like. It is a target. Also in the case of this modification, the adhesive may be arranged on the surface of the extension portion 161b on the side of the through hole 11 at a height that does not contact the surface of the main plate 1 on the blade chamber side. Further, in the rear arm main arm for which description is omitted, an adhesive may be disposed on the surface on the through hole 12 side in the same manner as the extended portion 161b of the front blade main arm 161. By arranging the pressure-sensitive adhesive in this way, it is possible to more reliably suppress the abrasion powder from entering the blade chamber or the like.
　　＜変形例２＞
　本実施形態のフォーカルプレンシャッタでは、凹部６１ｃに、摩耗粉などの塵埃を捕捉する粘着剤が配置された構成としているが、粘着剤に代えて、金属を捕捉するマグネットシートを配置する構成としてもよい。マグネットシートは、板状（シート状）に形成された永久磁石で形成される。このようなマグネットシートを用いる構成とすると、金属粉を捕捉することができる。粘着剤を用いる構成と比較すると、摩耗粉を捕捉する部材自体が飛散するおそれがない点などで好ましい。 <Modification 2>
In the focal plane shutter according to the present embodiment, the concave portion 61c has a configuration in which the adhesive that captures dust such as abrasion powder is disposed. However, instead of the adhesive, a configuration in which a magnet sheet that captures metal is disposed may be used. Good. The magnet sheet is formed of a plate-shaped (sheet-shaped) permanent magnet. With the configuration using such a magnet sheet, metal powder can be captured. Compared with a configuration using an adhesive, this is preferable in that there is no possibility that the member capturing the abrasion powder itself is scattered.
　　＜本実施形態のフォーカルプレンシャッタの特徴＞
　本実施形態のフォーカルプレンシャッタは、上記のように、先羽根４が開口部１ａ、２ａ、及び３ａを覆う状態（図１の状態）のときに、貫通孔１１の全体を先羽根用主アーム６１の拡張部６１ｂが覆う構成としている。これにより、本実施形態のフォーカルプレンシャッタは、羽根室外で発生した摩耗粉が貫通孔１１を通過して羽根室内に侵入したり、羽根室を通過して撮像素子に付着したりすることを抑制することができる。さらには、摩耗粉に起因する羽根の動作不具合、及び撮像した画像の画質の低下を抑制することができる。 <Features of the focal plane shutter of the present embodiment>
As described above, when the front blade 4 covers the openings 1a, 2a, and 3a (the state shown in FIG. 1), the focal plane shutter of the present embodiment allows the entire through hole 11 to be the main arm for the front blade. The configuration is such that the extended portion 61b of 61 covers. Thereby, the focal plane shutter according to the present embodiment suppresses abrasion powder generated outside the blade chamber from passing through the through hole 11 and entering the blade chamber, or from passing through the blade chamber and adhering to the image sensor. can do. Further, it is possible to suppress a malfunction of the blade caused by the abrasion powder and a decrease in the quality of a captured image.
　なお、図６の変形例で説明したように、先羽根４が開口部１ａ、２ａ、及び３ａを覆う状態（図１の状態）のときに、貫通孔１１の１／２以上を先羽根用主アーム６１の拡張部６１ｂが覆う構成としても、摩耗粉が羽根室内に侵入したり、撮像素子に付着したりすることを抑制するのに一定の効果が得られる。また、図１から図４において説明した拡張部６１ｂ、７１ｂについても同様である。その場合でも、凹部６１ｃ、７１ｃは各々の拡張部６１ｂ、７１ｂ内に形成することになる。 As described in the modification of FIG. 6, when the front blade 4 covers the openings 1a, 2a, and 3a (the state of FIG. 1), at least half of the through hole 11 is used for the front blade. Even when the extended portion 61b of the main arm 61 is configured to cover, a certain effect can be obtained in suppressing wear powder from entering the blade chamber or adhering to the image sensor. The same applies to the extension portions 61b and 71b described in FIGS. Even in that case, the concave portions 61c and 71c are formed in the respective extended portions 61b and 71b.
　また、先羽根用主アーム６１に代えて後羽根用主アーム７１を上記の構成にしてもよい。また、先羽根用主アーム６１及び後羽根用主アーム７１の双方を上記の構成にすると、さらに効果的である。以下の説明においても、先羽根４用の構成を主に説明していくが、後羽根５用の構成に置き換えてもよいし、先羽根４及び後羽根５にそれぞれ同様の特徴を有する構成を採用してもよい。 The rear arm main arm 71 may be configured as described above in place of the front blade main arm 61. Further, when both the main arm 61 for the front blade and the main arm 71 for the rear blade are configured as described above, it is more effective. In the following description, the configuration for the front blade 4 will be mainly described. However, the configuration for the rear blade 5 may be replaced with a configuration having the same characteristics for the front blade 4 and the rear blade 5. May be adopted.
　また、羽根は走行前状態に戻されるときよりも、走行するときのほうが高速で動作するため、摩耗粉などの飛散は走行が完了したタイミングで特に発生しやすい。そのため、拡張部を有さない構成を採用したとき、走行完了時に貫通孔が開放された状態となる後羽根５の側に拡張部を有する構成を採用すると、先羽根４の側に拡張部を有する構成を採用した場合と比較して効果的な場合がある。 Furthermore, since the blades operate at a higher speed when traveling than when returning to the pre-traveling state, scattering of abrasion powder and the like is particularly likely to occur when the traveling is completed. Therefore, when adopting the configuration having no extension portion, and adopting the configuration having the extension portion on the side of the rear blade 5 where the through hole is opened when the traveling is completed, the extension portion is provided on the side of the leading blade 4. There is a case where it is more effective than the case where the configuration having the above is adopted.
　また、本実施形態のフォーカルプレンシャッタでは、先羽根４が開口部１ａ、２ａ、及び３ａを開放する状態（図２の状態）のときに、平面視で地板１から拡張部６１ｂが突出しない構成としている。これにより、拡張部６１ｂがフォーカルプレンシャッタの地板１の領域からはみ出して他の構成と接触し破損してしまうことなどを防止することができる。 Further, in the focal plane shutter of the present embodiment, when the leading blade 4 opens the openings 1a, 2a, and 3a (the state shown in FIG. 2), the extended portion 61b does not project from the main plate 1 in plan view. And Thus, it is possible to prevent the extended portion 61b from protruding from the area of the base plate 1 of the focal plane shutter and coming into contact with other components to be damaged.
　また、本実施形態のフォーカルプレンシャッタでは、拡張部６１ｂが、先羽根用主アーム６１の本体部６１ｄから突出し、貫通孔１１の形成領域に沿って円弧状に延びる構成としている。これにより、拡張部６１ｂが貫通孔１１を覆うために効果的な形状とすることができるため、摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 In addition, in the focal plane shutter of the present embodiment, the extension portion 61b is configured to protrude from the main body portion 61d of the main arm 61 for the leading blade and extend in an arc shape along the formation region of the through hole 11. Thereby, the extended portion 61b can be formed in an effective shape to cover the through hole 11, so that it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　また、本実施形態のフォーカルプレンシャッタでは、拡張部６１ｂに溝状の凹部６１ｃが形成されているため、摩耗粉を凹部６１ｃに閉じ込めやすい構成にし、摩耗粉が羽根室及び撮像素子近傍に侵入することをより効果的に抑制することができる。 Further, in the focal plane shutter of the present embodiment, since the groove-shaped concave portion 61c is formed in the expansion portion 61b, the configuration is such that wear powder is easily confined in the concave portion 61c, and the wear powder enters the blade chamber and the vicinity of the image sensor. Can be suppressed more effectively.
　また、本実施形態のフォーカルプレンシャッタでは、拡張部６１ｂの貫通孔１１側に形成した凹部６１ｃに粘着剤を配置し、摩耗粉を粘着剤により捕獲することができる構成にしているため、拡張部６１ｂに付着した摩耗粉が、羽根の走行が繰り返されることで再度飛散することをより効果的に抑制することができる。これによって、摩耗粉が羽根室及び撮像素子近傍に侵入することをさらに効果的に抑制することができる。 Further, in the focal plane shutter of the present embodiment, the adhesive is disposed in the concave portion 61c formed on the through hole 11 side of the extended portion 61b so that the abrasion powder can be captured by the adhesive. It is possible to more effectively suppress the abrasion powder adhering to 61b from scattering again due to the repetition of travel of the blade. Thereby, it is possible to more effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor.
　なお、図６の変形例で説明したように、凹部を設けることなく、拡張部６１ｂの貫通孔１１側に粘着剤を配置する構成としてもよい。このような構成を採用しても、拡張部６１ｂに付着した摩耗粉が、羽根の走行が繰り返されることで再度飛散することを抑制するのに一定の効果を得ることができる。 As described in the modified example of FIG. 6, a configuration may be adopted in which the adhesive is disposed on the through hole 11 side of the expanded portion 61b without providing the concave portion. Even if such a configuration is adopted, a certain effect can be obtained in that the abrasion powder attached to the expansion portion 61b is prevented from scattering again due to the repetition of travel of the blade.
　＜２．実施形態２＞
　次に、本発明の実施形態２について、図７～図１０を参照しながら具体的に説明する。本実施形態は、実施形態１における先羽根用主アーム６１及び後羽根用主アーム７１が、先羽根用主アーム２６１及び後羽根用主アーム２７１に置き換えられている点で相違し、それ以外の構成は共通である。以下、実施形態１と比較したときの相違点について中心に説明し、実施形態１と共通する点についてはその説明を省略する。 <2. Embodiment 2>
Next, a second embodiment of the present invention will be specifically described with reference to FIGS. This embodiment is different from the first embodiment in that the main arm 61 for the front blade and the main arm 71 for the rear blade are replaced with a main arm 261 for the front blade and a main arm 271 for the rear blade. The configuration is common. Hereinafter, differences from the first embodiment will be mainly described, and description of points common to the first embodiment will be omitted.
　図７及び図８は、本実施形態のフォーカルプレンシャッタの平面図であって、図７は羽根走行前の状態を示し、図８は羽根走行後の状態を示している。図９は、先羽根用主アーム２６１の拡大平面図である。図１０は、先羽根用主アーム２６１の拡張部２６１ｂの断面図である。 FIGS. 7 and 8 are plan views of the focal plane shutter of the present embodiment. FIG. 7 shows a state before the blade travels, and FIG. 8 shows a state after the blade travels. FIG. 9 is an enlarged plan view of the main arm 261 for the leading blade. FIG. 10 is a cross-sectional view of the extended portion 261b of the main arm 261 for the leading blade.
　　＜先羽根用主アーム２６１＞
　先羽根用主アーム２６１は、先羽根用駆動ピン８１と先羽根４との間に配置され、連結具によって先羽根４に連結される。先羽根用主アーム２６１は、駆動部で発生した駆動力を、先羽根用駆動ピン８１を介して先羽根４に伝達する。先羽根用主アーム２６１は、地板１の回動軸１３が回動軸用孔２６１ａに挿通しており、回動軸１３を中心として回転する。 <Main arm 261 for front blade>
The main arm 261 for the front blade is arranged between the drive pin 81 for the front blade and the front blade 4, and is connected to the front blade 4 by a connecting tool. The leading blade main arm 261 transmits the driving force generated by the drive unit to the leading blade 4 via the leading blade drive pin 81. The main arm 261 for the leading blade has the rotation shaft 13 of the base plate 1 inserted through the hole 261 a for the rotation shaft, and rotates around the rotation shaft 13.
　先羽根用主アーム２６１は、本体部２６１ｄと、拡張部２６１ｂとを含む。拡張部２６１ｂは本体部２６１ｄから突出した形状となっている。拡張部２６１ｂは、貫通孔１１の形成領域に沿って円弧状に延びるよう形成されている。拡張部２６１ｂは、図１及び図２に示されるように、先羽根４が開口部を覆う状態のときに、貫通孔１１の全体を覆う。一方、先羽根４が開口部を開放する状態（開口部から退避した状態）のときには、拡張部２６１ｂは貫通孔１１から離れた場所に位置するが、平面視で地板１から突出しないよう形成されている。 主 The leading blade main arm 261 includes a main body 261d and an extension 261b. The extension part 261b has a shape protruding from the main body part 261d. The extension portion 261b is formed to extend in an arc shape along the region where the through hole 11 is formed. As shown in FIGS. 1 and 2, the extension portion 261b covers the entire through hole 11 when the leading blade 4 covers the opening. On the other hand, when the leading blade 4 opens the opening (retreats from the opening), the extension portion 261b is located at a position distant from the through hole 11, but is formed so as not to project from the base plate 1 in plan view. ing.
　拡張部２６１ｂは、実施形態１の拡張部６１ｂと異なり、凹部６１ｃを有する代わりに壁部２６１ｃを有する構成となっている。図１０の断面図に示されるように、拡張部２６１ｂは、貫通孔１１側に向かって延びるよう形成された壁部２６１ｃを有する。壁部２６１ｃは、板状に形成された先羽根用主アーム２６１において、貫通孔１１の延びる方向に対して両側方に対応する拡張部２６１ｂの箇所を折り曲げて形成される。壁部２６１ｃは、地板１に接しない程度の高さに形成されている。壁部２６１ｃによって囲まれる拡張部２６１ｂの部分には、粘着剤を配置する。 The extension 261b is different from the extension 61b of the first embodiment in that the extension 261b has a wall 261c instead of the recess 61c. As shown in the cross-sectional view of FIG. 10, the extension part 261b has a wall part 261c formed to extend toward the through hole 11 side. The wall portion 261c is formed by bending a portion of the expansion portion 261b corresponding to both sides in the direction in which the through hole 11 extends in the main arm 261 for the front blade in a plate shape. The wall portion 261c is formed at a height that does not touch the main plate 1. An adhesive is disposed on a portion of the extension 261b surrounded by the wall 261c.
　　＜後羽根用主アーム２７１＞
　後羽根用主アーム２７１は、本体部（符号省略）と、拡張部２７１ｂとを含んで構成される。拡張部２７１ｂは、貫通孔１１側に壁部２７１ｃを有する。後羽根用主アーム２７１は、地板１の回動軸１４が回動軸用孔２７１ａに挿通しており、回動軸１４を中心として回転する。後羽根用主アーム２７１は、図９及び図１０に示される先羽根用主アーム２６１と同様の構成であるため、具体的な説明を省略する。 <Main arm 271 for rear blade>
The rear arm main arm 271 is configured to include a main body (symbols omitted) and an extension 271b. The extension part 271b has a wall part 271c on the through hole 11 side. The main arm 271 for the rear blade has the pivot shaft 14 of the main plate 1 inserted through the pivot shaft hole 271a, and rotates around the pivot shaft 14. The main arm 271 for the rear blade has the same configuration as the main arm 261 for the front blade shown in FIGS. 9 and 10, and a detailed description thereof will be omitted.
　　＜変形例＞
　本実施形態のフォーカルプレンシャッタでは、壁部２６１ｃによって囲まれる拡張部２６１ｂの部分に粘着剤を配置する構成としたが、粘着剤に代えて、金属を捕捉するマグネットシートを配置する構成としてもよい。マグネットシートは、板状（シート状）に形成された永久磁石で形成される。このようなマグネットシートを用いる構成とすると、金属粉を捕捉することができる。粘着剤を用いる構成と比較すると、摩耗粉を捕捉する部材自体が飛散するおそれがない点などで好ましい。 <Modification>
In the focal plane shutter according to the present embodiment, the adhesive is arranged on the extended portion 261b surrounded by the wall 261c. However, instead of the adhesive, a magnet sheet for capturing a metal may be arranged. . The magnet sheet is formed of a plate-shaped (sheet-shaped) permanent magnet. With the configuration using such a magnet sheet, metal powder can be captured. Compared with a configuration using an adhesive, this is preferable in that there is no possibility that the member capturing the abrasion powder itself is scattered.
　　＜本実施形態のフォーカルプレンシャッタの特徴＞
　本実施形態のフォーカルプレンシャッタは、上記のように、拡張部２６１ｂの貫通孔１１側の面に、貫通孔１１に向かって延びる壁部２６１ｃが形成された構成としている。そのため、拡張部２６１ｂに付着した摩耗粉が、羽根の走行が繰り返された場合に飛散しようとしても、壁部によって飛散を抑制することができる。これによって、摩耗粉が羽根室及び撮像素子近傍に侵入することを効果的に抑制することができる。壁部２６１ｃは、凹部６１ｃよりも高さを有する構成とすることができるため、摩耗粉の飛散を抑制する点において好ましい。ただし、フォーカルプレンシャッタの厚みを薄くする点においては、実施形態１の凹部６１ｃを有する構成の方が好ましい場合がある。 <Features of the focal plane shutter of the present embodiment>
As described above, the focal plane shutter of the present embodiment has a configuration in which the wall portion 261c extending toward the through hole 11 is formed on the surface of the extension portion 261b on the side of the through hole 11. Therefore, even if the abrasion powder adhering to the extended portion 261b attempts to fly when the blades repeatedly travel, the wall can suppress the scattering. Thereby, it is possible to effectively suppress the abrasion powder from entering the blade chamber and the vicinity of the image sensor. The wall portion 261c can be configured to have a height higher than that of the concave portion 61c, which is preferable in that scattering of wear powder is suppressed. However, in terms of reducing the thickness of the focal plane shutter, the configuration having the concave portion 61c of the first embodiment may be more preferable.
　また、本実施形態のフォーカルプレンシャッタでは、壁部２６１ｃが、貫通孔１１が延びる方向の両側方に沿って、拡張部２６１ｂの縁部に形成された構成としている。このような構成は、比較的容易に壁部２６１ｃを形成可能であるため好ましい。 In the focal plane shutter of the present embodiment, the wall 261c is formed at the edge of the extension 261b along both sides in the direction in which the through-hole 11 extends. Such a configuration is preferable because the wall portion 261c can be formed relatively easily.
　なお、壁部２６１ｃは、拡張部２６１ｂの両縁部ではなく、片方の縁部に形成されてもよい。このような構成を採用した場合であっても、摩耗粉の飛散を抑制する点で一定の効果が得られる。 The wall 261c may be formed on one edge instead of both edges of the extension 261b. Even when such a configuration is employed, a certain effect can be obtained in that scattering of wear powder is suppressed.
　また、壁部２６１ｃは、拡張部２６１ｂの縁部ではなく、縁部近傍の位置に形成されてもよい。このような構成を採用した場合であっても、摩耗粉の飛散を抑制する点で一定の効果が得られる。 The wall 261c may be formed at a position near the edge of the extension 261b instead of the edge. Even when such a configuration is employed, a certain effect can be obtained in that scattering of wear powder is suppressed.
　また、壁部２６１ｃは、拡張部２６１ｂにおいて貫通孔１１が延びる方向の両側方に沿って形成されるだけでなく、壁部２６１ｃによって拡張部２６１ｂの所定の領域を四方から連続的に囲むように形成してもよい。このような構成では、拡張部２６１ｂに付着した摩耗粉が羽根室及び撮像素子近傍に侵入することを、貫通孔１１を全周囲で囲む壁部２６１ｃによってより効果的に抑制することができる。また、壁部２６１ｃを設けた拡張部２６１ｂは、貫通孔１１の１／２以上を覆う構成としても、磨耗粉が羽根室内に侵入したり、撮像素子に付着したりすることを抑制するのに一定の効果が得られる。 The wall portion 261c is formed not only along both sides in the direction in which the through-hole 11 extends in the extension portion 261b, but also so as to continuously surround a predetermined region of the extension portion 261b from all sides by the wall portion 261c. It may be formed. In such a configuration, it is possible to more effectively suppress the abrasion powder adhering to the extended portion 261b from entering the blade chamber and the vicinity of the imaging element by the wall portion 261c surrounding the through hole 11 around the entire circumference. Further, even if the extended portion 261b provided with the wall portion 261c covers a half or more of the through hole 11, the extended portion 261b can prevent the abrasion powder from entering the blade chamber and adhering to the image sensor. A certain effect can be obtained.
　＜３．補足事項＞
　以上、本発明の実施形態についての具体的な説明を行った。上記説明は、あくまで一実施形態としての説明であって、本発明の範囲はこの一実施形態に留まらず、当業者が把握可能な範囲にまで広く解釈されるものである。 <3. Supplementary items>
The specific description of the embodiment of the present invention has been given above. The above description is merely an embodiment, and the scope of the present invention is not limited to this embodiment, but is widely interpreted to a range that can be understood by those skilled in the art.
　上記各実施形態のフォーカルプレンシャッタの主アームにおける拡張部は、貫通孔の延びる方向に沿って本体部から延びる形状を示したが、必ずしもこのような形状に限定されるものではなく、本体部が全面的に大きくなった形状を採用してもよい。ただし、拡張部が本体部から全体的に大きく突出する形状を採用した場合には、実施形態の形状と比較して主アームが大きくなり、主アームが重くなる場合がある。 The extended portion of the main arm of the focal plane shutter of each of the above embodiments has a shape extending from the main body along the direction in which the through hole extends, but is not necessarily limited to such a shape. An enlarged shape may be employed as a whole. However, when the shape in which the extension portion protrudes largely from the main body is adopted, the main arm may be larger and the main arm may be heavier than the shape of the embodiment.
　また、実施形態では主アームが拡張部を有する構成について説明したが、主アームと従アームとの配置によっては、従アームが拡張部を有するような構成を採用してもよい。 In the embodiment, the configuration in which the main arm has the extension is described. However, depending on the arrangement of the main arm and the slave arm, a configuration in which the slave arm has the extension may be adopted.
　また、実施形態では、フォーカルプレンシャッタに備えられる先羽根４及び後羽根５は、それぞれ複数の羽根部材を有する構成として説明したが、先羽根４及び後羽根５は、それぞれ一枚の羽根部材を有する構成であってもよい。 Further, in the embodiment, the front blade 4 and the rear blade 5 provided in the focal plane shutter have been described as having a plurality of blade members, respectively. However, the front blade 4 and the rear blade 5 each have one blade member. May be provided.
　また、実施形態では先羽根４及び後羽根５を備えるフォーカルプレンシャッタについて説明したが、先羽根４または後羽根５のいずれか一方の羽根のみを備える構成を採用してもよい。その場合、実施形態のフォーカルプレンシャッタでは、中間板３を有する構成例を説明したが、中間板３を有さない構成を採用してもよい。 In the embodiment, the focal plane shutter including the front blade 4 and the rear blade 5 has been described. However, a configuration including only one of the front blade 4 and the rear blade 5 may be adopted. In this case, in the focal plane shutter of the embodiment, the configuration example including the intermediate plate 3 has been described, but a configuration not including the intermediate plate 3 may be adopted.
　本発明は、デジタルカメラなどの撮像装置のフォーカルプレンシャッタなどとして好適に適用される。 The present invention is suitably applied as a focal plane shutter of an imaging device such as a digital camera.
１…地板
　１ａ、２ａ、３ａ…開口部
　１１、１２…貫通孔
　１３、１４…回動軸
２…カバー板
３…中間板
４…先羽根
５…後羽根
６１、１６１、２６１…先羽根用主アーム
　６１ａ、１６１ａ、２６１ａ…回動軸用孔
　６１ｂ、１６１ｂ、２６１ｂ…拡張部
　６１ｃ…凹部
　２６１ｃ…壁部
　６１ｄ、２６１ｄ…本体部
６２…先羽根用従アーム
７１、２７１…後羽根用主アーム
　７１ａ、２７１ａ…回動軸用孔
　７１ｂ、２７１ｂ…拡張部
　７１ｃ、…凹部
　２７１ｃ…壁部
７２…後羽根用従アーム
８１…先羽根用駆動ピン
８２…後羽根用駆動ピン
３６１…主アーム
　３６１ａ…回動軸用孔
　３６１ｄ…本体部 DESCRIPTION OF SYMBOLS 1 ... Ground plate 1a, 2a, 3a ... Openings 11, 12 ... Through holes 13, 14 ... Rotating shaft 2 ... Cover plate 3 ... Intermediate plate 4 ... Front blade 5 ... Rear blade 61, 161, 261 ... Main for front blade Arms 61a, 161a, 261a ... holes for rotating shafts 61b, 161b, 261b ... extended portions 61c ... concave portions 261c ... wall portions 61d, 261d ... body portions 62 ... slave arms 71, 271 for front blades and main arms 71a for rear blades. 271a Rotating shaft hole 71b, 271b Expanding portion 71c, concave portion 271c Wall portion 72 Rear blade slave arm 81 Front blade drive pin 82 Rear blade drive pin 361 Main arm 361a Hole for driving shaft 361d ... body

Claims (14)

  1. 　開口部、貫通孔、及び回動軸を有する地板と、
    　前記開口部を覆う状態と開放する状態とを切り替える羽根と、
    　前記回動軸を中心に回動し、前記羽根に連結されたアームと、
    　前記貫通孔を挿通して配置され、前記貫通孔の形成領域を移動し、前記アームと連結された駆動ピンと、を備え、
    　前記アームは、前記羽根が前記開口部を覆う状態のときに、前記貫通孔の１／２以上を覆うよう形成された拡張部を有する、
    　フォーカルプレンシャッタ。     A base plate having an opening, a through hole, and a rotation axis,
    A blade that switches between a state of covering the opening and a state of opening,
    An arm that rotates about the rotation axis and is connected to the blade;
    A drive pin that is disposed through the through-hole, moves in a formation area of the through-hole, and is connected to the arm.
    The arm has an extension formed to cover at least half of the through hole when the blade covers the opening.
    Focal plane shutter.
  2. 　前記拡張部は、前記羽根が前記開口部を開放する状態のときに、平面視で前記地板から突出しないよう形成されている、
    　請求項１に記載のフォーカルプレンシャッタ。     The expansion portion is formed so as not to protrude from the main plate in a plan view when the blades open the opening.
    The focal plane shutter according to claim 1.
  3. 　前記拡張部は、前記羽根が前記開口部を覆う状態のときに、前記貫通孔の全体を覆うよう形成されている、
    　請求項１または請求項２に記載のフォーカルプレンシャッタ。     The expansion portion is formed to cover the entire through-hole when the blade covers the opening.
    The focal plane shutter according to claim 1.
  4. 　前記拡張部は、前記アームの他の部分から突出し、前記貫通孔の形成領域に沿って円弧状に延びるよう形成されている、
    　請求項１から請求項３のいずれか１項に記載のフォーカルプレンシャッタ。     The extension portion is formed to protrude from another portion of the arm and extend in an arc shape along a formation region of the through hole.
    The focal plane shutter according to any one of claims 1 to 3.
  5. 　前記拡張部は、前記貫通孔側の面に粘着剤が配置されている、
    　請求項１から請求項４のいずれか１項に記載のフォーカルプレンシャッタ。     The extended portion, an adhesive is disposed on the surface on the through-hole side,
    The focal plane shutter according to claim 1.
  6. 　前記拡張部は、前記貫通孔側の面に永久磁石が配置されている、
    　請求項１から請求項４のいずれか１項に記載のフォーカルプレンシャッタ。     In the extension, a permanent magnet is disposed on a surface on the side of the through hole.
    The focal plane shutter according to claim 1.
  7. 　前記拡張部は、前記貫通孔側の面に凹部が形成されている、
    　請求項１から請求項４のいずれか１項に記載のフォーカルプレンシャッタ。     The extended portion has a recess formed on the surface on the side of the through hole.
    The focal plane shutter according to claim 1.
  8. 　前記凹部には粘着剤が配置されている、
    　請求項７に記載のフォーカルプレンシャッタ。     An adhesive is arranged in the recess,
    A focal plane shutter according to claim 7.
  9. 　前記凹部には永久磁石が配置されている、
    　請求項７に記載のフォーカルプレンシャッタ。     A permanent magnet is arranged in the recess,
    A focal plane shutter according to claim 7.
  10. 　前記拡張部は、前記貫通孔側の面に、前記貫通孔側に向かって延びる壁部を有する、
    　請求項１から請求項６のいずれか１項に記載のフォーカルプレンシャッタ。     The extension portion has a wall portion extending toward the through hole on a surface on the side of the through hole.
    The focal plane shutter according to any one of claims 1 to 6.
  11. 　前記壁部は、前記貫通孔の延びる方向に沿って、前記拡張部の縁部または縁部近傍に形成される、
    　請求項１０に記載のフォーカルプレンシャッタ。     The wall is formed near the edge or the edge of the extension along the direction in which the through hole extends,
    The focal plane shutter according to claim 10.
  12. 　前記壁部は、前記拡張部の両縁部に形成される、
    　請求項１１に記載のフォーカルプレンシャッタ。     The wall is formed at both edges of the extension,
    The focal plane shutter according to claim 11.
  13. 　前記壁部は、前記拡張部の前記貫通孔側の面の一部または全部を囲むよう形成される、
    　請求項１１に記載のフォーカルプレンシャッタ。     The wall portion is formed so as to surround part or all of a surface of the extension portion on the through hole side,
    The focal plane shutter according to claim 11.
  14. 　請求項１から請求項１３のいずれか１項に記載のフォーカルプレンシャッタを備える撮像装置。 An imaging apparatus comprising the focal plane shutter according to any one of claims 1 to 13.
PCT/JP2019/023912 2018-06-21 2019-06-17 Focal-plane shutter and imaging device WO2019244838A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7474086B2 (en) 2020-03-18 2024-04-24 ニデックプレシジョン株式会社 Blade drive device and imaging device equipped with same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003270700A (en) * 2002-03-13 2003-09-25 Nidec Copal Corp Focal plane shutter for camera
JP2005241871A (en) * 2004-02-25 2005-09-08 Nidec Copal Corp Focal plane shutter for camera
JP2014209174A (en) * 2013-03-29 2014-11-06 日本電産コパル株式会社 Camera focal plane shutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003270700A (en) * 2002-03-13 2003-09-25 Nidec Copal Corp Focal plane shutter for camera
JP2005241871A (en) * 2004-02-25 2005-09-08 Nidec Copal Corp Focal plane shutter for camera
JP2014209174A (en) * 2013-03-29 2014-11-06 日本電産コパル株式会社 Camera focal plane shutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7474086B2 (en) 2020-03-18 2024-04-24 ニデックプレシジョン株式会社 Blade drive device and imaging device equipped with same

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