Patent Application
20250013123
The present application claims priority to Japanese Application Number 2023-110135, filed Jul. 4, 2023, the disclosure of which is hereby incorporated by reference herein in its entirety.
The present invention relates to a blade open-close device.
A known light amount adjustment device for a camera includes multiple blades to reduce the aperture size by covering the opening in the substrate of the camera. Patent Literature 1 describes a light amount adjustment device including multiple blades movably supported on a substrate. In the device in Patent Literature 1, sliding plates to prevent malfunction of the blades are each located between blades.
When any of the sliding plates is not attached in the device in Patent Literature 1 during manufacture, the blades interfere with one another and malfunction while moving. Thus, such a device that malfunctions in a performance test is determined to be a defective product to which any of the sliding plates is unattached.
The accuracy of detecting a failure to attach a sliding plate is to be improved.
A blade open-close device according to an embodiment includes an elongated member having an opening on an optical axis of an optical unit and extending in an intersecting direction intersecting with an optical axis direction in which the optical axis of the optical unit extends, a blade movable in the intersecting direction to cover or uncover the opening, a drive that moves the blade to one of a closing position to cover the opening or an opening position to uncover the opening, a transmission member that transmits a driving force generated by the drive to the blade, a body in which the elongated member, the blade, the drive, and the transmission member are located, and a restrictor that restricts movement of the blade in the intersecting direction. The elongated member and the transmission member are located between the body and the blade in the optical axis direction. The body has a facing surface facing the elongated member and the transmission member. The restrictor is located on the facing surface.
The blade open-close device according to the above embodiment of the present invention can restrict the movement of the blade when the elongated member or the transmission member is unattached.
A blade open-close device according to one or more embodiments of the present invention and an electronic device including the blade open-close device will now be described in detail with reference to the drawings.
An electronic device including the blade open-close device 30 is not limited to the laptop PC 10, and may be another electronic device having the camera function, such as a smart speaker or a home security camera.
The positive Z-direction may be hereafter referred to as being upward, and the negative Z-direction as being downward. The positive X-direction may be hereafter referred to as being rightward, and the negative X-direction as being leftward. The positive Y-direction may be hereafter referred to as being frontward, and the negative Y-direction as being rearward.
The blade open-close device 30 includes a body 31, an aperture blade 33, the blade 34, a drive 35, a cover 36, a transmission member 37, and a restrictor 50.
The aperture blade 33, the blade 34, the drive 35, the cover 36, and the transmission member 37 (all described in detail later) are located in the body 31. The body 31 has a lower surface fixed inside the laptop PC 10, which is an electronic device, by, for example, bonding. The body 31 may be removably attached to the laptop PC 10.
The body 31 has a rectangular shape longer in the intersecting direction than in the front-rear direction, which intersects with the optical axis direction and the intersecting direction, as viewed in the optical axis direction. The body 31 includes a first compartment 310 and a second compartment 311. The first compartment 310 is a recess on a left portion of an upper surface 313 of the body 31. The first compartment 310 accommodates the drive 35 (described later). The second compartment 311 is a recess on a right portion of the lower surface of the body 31. The second compartment 311 accommodates the camera unit 16. The second compartment 311 has an upper surface with a body opening 317. The body opening 317 extends through the upper surface 313 above the second compartment 311 in the optical axis direction. The body opening 317 has its center on the optical axis K of the lens 23.
The body 31 has the upper surface 313 that is a facing surface facing the aperture blade 33 and the transmission member 37 (both described later) in the optical axis direction. The restrictor 50 (described later), bosses 318a, 318b, 318c, and 318d, and a guide pin 319 are located on the upper surface 313 of the body 31. More specifically, the boss 318a is located on the left of the first compartment 310 on the upper surface 313. The bosses 318b, 318c, and 318d are located in the first compartment 310. The boss 318d is located on one second restriction flat surface 524 (refer to
Projections 42 are located on the left and the right of the second compartment 311 on the front side surface of the body 31. The projections 42 protrude frontward. More specifically, the projections 42 each have a slope with its lower end protruding more frontward than its upper end. Although not shown in the figures, projections that are the same as the projections 42 are also located on the rear side surface and the left side surface of the body 31. The projection on the left side surface of the body 31 protrudes leftward.
The aperture blade 33 is located on the body 31. In other words, the upper surface 313 of the body 31 described above faces the aperture blade 33. The aperture blade 33 is a plate-like elongated member having a predetermined thickness in the direction along the optical axis K and extending in the left-right direction (specifically, the intersecting direction). The aperture blade 33 has a length in the intersecting direction equal to or substantially equal to the length of the body 31 in the intersecting direction.
The aperture blade 33 has an opening 330, a first guide hole 331, a second guide hole 332, and attachment holes 333, 334, and 335. The attachment hole 333 receives the boss 318a. The attachment hole 334 receives the boss 318d. The attachment hole 335 receives the guide pin 319.
The opening 330 extends through the aperture blade 33 in the optical axis direction. The opening 330 is located above the lens 23 in the camera unit 16. More specifically, the opening 330 has its center located on the optical axis K of the lens 23 and aligned with the center of the body opening 317 in the second compartment 311. The opening 330 thus overlaps the body opening 317 in the body 31 in the optical axis direction. The opening 330 functions as a diaphragm (aperture) that determines the amount of light entering the lens 23.
The first guide hole 331 is elongated linearly in the intersecting direction as viewed in the optical axis direction. The first guide hole 331 receives an insertion portion 342 included in the blade 34 (described later). The first guide hole 331 guides the movement of the insertion portion 342 in the intersecting direction. The first guide hole 331 receives a boss 369 (described later) near its left end.
The second guide hole 332 is arc-shaped as viewed in the optical axis direction. The second guide hole 332 has one (rear) end continuous with the front side surface of the first guide hole 331. The second guide hole 332 receives a connector 357 included in the drive 35 (described later). The second guide hole 332 guides the movement of the connector 357.
The blade 34 is a plate having a predetermined thickness in the optical axis direction. The blade 34 is a rectangle longer in the intersecting direction than in the front-rear direction as viewed in the optical axis direction. The blade 34 is located on the aperture blade 33 and movable by the drive 35 (described later) in the intersecting direction. In other words, the aperture blade 33 is located between the body 31 and the blade 34 in the optical axis direction.
The blade 34 is shorter than the aperture blade 33 in the intersecting direction. Thus, the blade 34 moves to switch the opening 330 in the aperture blade 33 between being uncovered and being covered (shielded). More specifically, the blade 34 is located on the aperture blade 33, which is an elongated member, in a manner movable in the intersecting direction, and covers and uncovers the opening 330.
The blade 34 has a through-hole (not shown) in a portion near its left end. The through-hole receives an engagement member 340. The engagement member 340 includes a head 341 and the insertion portion 342. The head 341 is located above the blade 34. The insertion portion 342 extends downward from the head 341 through the through-hole and can be received in a second insertion hole 379 in a lever blade 371 (described later).
A guide hole 343 is located rightward and frontward from the engagement member 340. The guide hole 343 is an elongated hole extending through the blade 34 in the optical axis direction and having long sides extending in the intersecting direction. The guide hole 343 receives the guide pin 319. An elongated hole 344 is located rearward from the guide hole 343. The elongated hole 344 extends through the blade 34 in the optical axis direction and has long sides extending in the intersecting direction.
The blade 34 with the above structure is moved by the drive 35 (described later) in the intersecting direction. More specifically, when the blade 34 moves rightward and has its right end 34a at a position rightward from a right end 330a of the opening 330, the blade 34 covers the opening 330. The position of the blade 34 in this state may be referred to as a closing position. The blade 34 at the closing position blocks light traveling through the opening 330 and the body opening 317 toward the lens 23. This prevents light from entering the lens 23.
When the blade 34 moves leftward and has the right end 34a at a position leftward from a left end 330b of the opening 330, the blade 34 uncovers the opening 330. The position of the blade 34 in this state may be referred to as an opening position. When the blade 34 is at the opening position, external light travels through an opening 361 in the cover 36 (described later), the opening 330 in the aperture blade 33, and the body opening 317 in the body 31 and enters the lens 23.
The cover 36 is located above the blade 34. More specifically, the cover 36 covers the camera unit 16 as well as the body 31, the aperture blade 33, the blade 34, and the drive 35 (described in detail later) included in the blade open-close device 30 from above. The cover 36 includes an upper plate 360 defining an upper end portion of the blade open-close device 30. The upper plate 360 has a predetermined thickness in the optical axis direction and extends in the intersecting direction. The upper plate 360 has a rectangular outer shape longer in the intersecting direction than in the front-rear direction as viewed in the optical axis direction. In other words, the cover 36 is a cover member extending in the intersecting direction to cover the blade 34. As described above, the blade 34 is located on the aperture blade 33. The blade 34 thus moves in the intersecting direction in a space defined by the cover 36 as a cover member and the aperture blade 33 as an elongated member. The upper plate 360 has a length in the intersecting direction longer than the length of the aperture blade 33 in the left-right direction.
The upper plate 360 has the opening 361, a guide hole 362, and attachment holes 364, 365, and 366. The opening 361 extends through the upper plate 360 in the optical axis direction. The opening 361 has its center on the optical axis K of the lens 23. More specifically, the opening 361 is located above the opening 330 in the aperture blade 33 and the body opening 317 in the second compartment 311. The attachment hole 364 receives the boss 318a. The attachment hole 365 receives the boss 369 (described later). The attachment hole 366 receives the guide pin 319.
The guide hole 362 is elongated linearly in the intersecting direction as viewed in the optical axis direction. The guide hole 362 is located above the first guide hole 331 in the aperture blade 33 described above. The guide hole 362 guides the head 341 in the blade 34 described above in the intersecting direction.
The upper plate 360 includes multiple mounts 367 extending downward from its front end, rear end, and left end. Each mount 367 is a rectangular frame as viewed in the front-rear direction or in the left-right direction. The cover 36 is attached to the body 31 from above with the multiple mounts 367 engaged with the respective projections 42 on the body 31.
The drive 35 moves the blade 34 to either the closing position to cover the opening 330 or the opening position to uncover the opening 330. The drive 35 includes a rotor magnet 351, a yoke 352, a coil 353, and a terminal plate 368 that are attached to an attachment member 350. The attachment member 350 to which the rotor magnet 351, the yoke 352, the coil 353, and the terminal plate 368 are attached is accommodated in the first compartment 310 to attach the drive 35 to the body 31. The attachment member 350 accommodated in the first compartment 310 has its outer shape defining a part of the outer shape of the body 31.
The attachment member 350 has an upper surface 355 with an attachment hole 356 and the boss 369. The upper surface 355 includes a part of the restrictor 50 (described later). As described above, the attachment member 350 has the outer shape defining a part of the outer shape of the body 31. Thus, a part of the restrictor 50 included in the attachment member 350 is included in the body 31.
The attachment hole 356 is a through-hole extending through the upper surface 355 in the vertical direction. The attachment hole 356 receives the boss 318b located in the first compartment 310. The boss 369 is a protrusion that protrudes upward from the upper surface 355. The upper surface 355 has a right end 358 cut into an arc. The end 358 aligns with the side wall surface of the arc-shaped second guide hole 332 in the aperture blade 33 described above in the vertical direction.
The coil 353 is a winding that is wound around a winding mount in the attachment member 350 for attachment. The coil 353 is electrically connected to the terminal plate 368. The terminal plate 368 is flat and attached to the front side surface of the attachment member 350 with fixtures 359. The terminal plate 368 is electrically connected to a power supply (not shown).
The yoke 352 is formed from a magnetic material and includes an arm 352A and an arm 352B. The arms 352A and 352B in the yoke 352 are accommodated in the attachment member 350 described above. The arms 352A and 352B are magnetized to have polarities different from each other when the coil 353 is energized.
The rotor magnet 351 is accommodated in the attachment member 350. The rotor magnet 351 accommodated in the attachment member 350 is located between the arm 352A and the arm 352B in the yoke 352. The rotor magnet 351 includes magnets with different magnetic poles in the circumferential direction. When the arm 352A and the arm 352B are magnetized to have polarities different from each other in response to the coil 353 being energized, a repulsive force or an attractive force acts on each magnet in the rotor magnet 351. The rotor magnet 351 thus rotates when the coil 353 is energized. The rotor magnet 351 rotates in a different direction when a current supplied to the coil 353 flows in a different direction.
A lever 354 is attached to the upper end of the rotor magnet 351. The lever 354 extends radially outward from the rotor magnet 351. The lever 354 includes the connector 357 being a hook. The connector 357 moves along the arc-shaped end 358 of the upper surface 355 as the rotor magnet 351 rotates as described above.
The transmission member 37 transmits, to the blade 34, a rotational driving force that is generated as the rotor magnet 351 in the drive 35 rotates and allows the blade 34 to move in the intersecting direction. The transmission member 37 includes a partition 370 and a lever blade 371. The transmission member 37 is located between the body 31 and the aperture blade 33 in the optical axis direction. In other words, the transmission member 37 is located between the body 31 and the blade 34 in the optical axis direction.
The partition 370 is located above the rotor magnet 351, or specifically, at the upper end of the drive 35 and on the upper surface 313 of the body 31. More specifically, the partition 370 is located on placement surfaces 523 (refer to
The third guide hole 372 is elongated linearly in the intersecting direction as viewed in the optical axis direction. The third guide hole 372 is located below the first guide hole 331 in the aperture blade 33. The third guide hole 372 receives the insertion portion 342 included in the blade 34. The third guide hole 372 guides the movement of the insertion portion 342 in the intersecting direction.
The fourth guide hole 373 is arc-shaped as viewed in the optical axis direction. The fourth guide hole 373 is located below the second guide hole 332 in the aperture blade 33. The fourth guide hole 373 receives the connector 357 described above. The fourth guide hole 373 guides the movement of the connector 357.
The lever blade 371 is located above the partition 370. The lever blade 371 includes a plate-like first portion 371a and a plate-like second portion 371b. One end of the first portion 371a and one end of the second portion 371b are connected to each other. The first portion 371a and the second portion 371b extend to have the other end of the first portion 371a and the other end of the second portion 371b in different directions on a plane intersecting with the vertical direction.
The lever blade 371 has a shaft hole 377, a first insertion hole 378, and a second insertion hole 379 in its surface. The shaft hole 377 is at a position at which the first portion 371a and the second portion 371b are connected. The shaft hole 377 receives the boss 318d. The lever blade 371 is rotatable about the boss 318d. In other words, the boss 318d functions as a rotational shaft when the lever blade 371 rotates.
The first insertion hole 378 is in the first portion 371a and extends through the first portion 371a in the vertical direction. The first insertion hole 378 receives the connector 357. The second insertion hole 379 is in the second portion 371b and extends through the second portion 371b in the vertical direction. The second insertion hole 379 receives the insertion portion 342 included in the blade 34.
The restrictor 50 restricts the movement of the blade 34 in the intersecting direction when the aperture blade 33 or the partition 370 is unattached in assembling and manufacturing the blade open-close device 30. The restrictor 50 is located on the upper surface 313 of the body 31.
The second restrictor 52 is located on the upper surface 313 of the body 31 and the upper surface 355 of the attachment member 350. The second restrictor 52 is located on the left of the first restrictor 51 to restrict the movement of the lever blade 371. More specifically, the second restrictor 52 comes in contact with the lever blade 371 in the transmission member 37 to restrict the movement of the lever blade 371, thus preventing a driving force from being transmitted to the blade 34 through the transmission member 37. This restricts the movement of the blade 34.
The first restrictor 51 includes the first restriction flat surface 510, a first step 511, a first protrusion 512, and a second protrusion 513. The first restriction flat surface 510 intersects with the optical axis direction and is located downward from the upper surface 313 of the body 31. More specifically, the first restriction flat surface 510 faces the aperture blade 33 in the optical axis direction, and is spaced farther from the aperture blade 33 than the upper surface 313 being a facing surface in the optical axis direction.
The first step 511 is located between the upper surface 313 of the body 31 and the first restriction flat surface 510. The first step 511 is located on the left of the body opening 317. More specifically, the first step 511 is located between, in the intersecting direction, the right end 34a being a first end of the blade 34 and the body opening 317 when the blade 34 is at the opening position.
The first step 511 has a first connection surface 511a connecting the upper surface 313 and the first restriction flat surface 510. The first connection surface 511a extends in the front-rear direction. The first connection surface 511a may extend in a direction that is not parallel to the front-rear direction, and may simply extend in a direction intersecting with the intersecting direction.
The first protrusion 512 is located on the left of and adjacent to the guide pin 319 located on a front portion of the first restriction flat surface 510. In other words, the first protrusion 512 is spaced from the first step 511 in the intersecting direction. The first protrusion 512 protrudes upward, or in other words, toward the blade 34. The second protrusion 513 is located leftward from the first protrusion 512 on a rear portion of the first restriction flat surface 510. In other words, the second protrusion 513 is spaced from the first step 511 in the intersecting direction. The second protrusion 513 protrudes upward, or in other words, toward the blade 34.
The first restrictor 51 may not include both the first protrusion 512 and the second protrusion 513, and may include one of the first protrusion 512 or the second protrusion 513 or include three or more protrusions. The first restrictor 51 may include neither the first protrusion 512 nor the second protrusion 513.
The second restrictor 52 is located on the left of the first restrictor 51 and on the upper surface 313 of the body 31 and the upper surface 355 of the attachment member 350. As described above, the attachment member 350 accommodated in the first compartment 310 has the outer shape defining a part of the outer shape of the body 31. The second restrictor 52 is thus located in the body 31.
The second restrictor 52 includes second steps 521a and 521b (collectively referred to as the second steps 521), placement surfaces 523a and 523b (collectively referred to as the placement surfaces 523), and second restriction flat surfaces 524a and 524b (collectively referred to as the second restriction flat surfaces 524). The placement surfaces 523 are flat surfaces intersecting with the optical axis direction and located downward from the first restriction flat surface 510 of the first restrictor 51. In other words, the placement surfaces 523 are spaced farther from the aperture blade 33 than the first restriction flat surface 510. The placement surface 523a is included in the body 31. The placement surface 523b corresponds to the upper surface 355 of the attachment member 350. The partition 370 in the transmission member 37 described above is located on the placement surfaces 523.
The second restriction flat surfaces 524 intersect with the optical axis direction and are located downward from the placement surfaces 523. In other words, the second restriction flat surfaces 524 are spaced farther from the aperture blade 33 than the placement surfaces 523 and face the aperture blade 33 in the optical axis direction. The second restriction flat surface 524a is included in the body 31. The second restriction flat surface 524b is included in the attachment member 350.
Each second step 521 is located between the corresponding placement surface 523 and the corresponding second restriction flat surface 524. Each second step 521 has a second connection surface 522 connecting the corresponding placement surface 523 and the corresponding second restriction flat surface 524. More specifically, the second step 521a is located between the placement surface 523a and the second restriction flat surface 524a, and a second connection surface 522a connects the placement surface 523a and the second restriction flat surface 524a. The second step 521b is located between the placement surface 523b and the second restriction flat surface 524b, and a second connection surface 522b connects the placement surface 523b and the second restriction flat surface 524b.
The second connection surface 522 of each second step 521 extends in a direction that is not parallel to the front-rear direction based on the shape of the lever blade 371. More specifically, the second connection surface 522a of the second step 521a extends in a direction in which the second portion 371b of the lever blade 371 extends. The second connection surface 522b of the second step 521b extends in a direction in which the first portion 371a of the lever blade 371 extends.
The blade 34 being driven by the drive 35 and the transmission member 37 described above will be described with reference to
When the blade 34 is at the closing position, the rotor magnet 351 and the connector 357 shown in
When the blade 34 is at the closing position, the rotor magnet 351 and the connector 357 shown in
The blade 34 being driven by the drive 35 and the transmission member 37 when the partition 370 is unattached will now be described with reference to
With the partition 370 unattached, the lever blade 371 has its lower surface in contact with the upper surface 355 of the attachment member 350, or in other words, the placement surface 523b, at the opening position shown in
As described above, the second connection surface 522a of the second step 521a extends in the direction in which the second portion 371b of the lever blade 371 extends. A side surface 381 of the second portion 371b of the lever blade 371 thus faces the second connection surface 522a of the second step 521a. The second connection surface 522b of the second step 521b extends in the direction in which the first portion 371a of the lever blade 371 extends. A side surface 380 of the first portion 371a of the lever blade 371 thus faces the second connection surface 522b of the second step 521b.
When the lever blade 371 is to rotate counterclockwise in
With the lever blade 371 restricted from rotating, the blade 34, which moves in the intersecting direction as the lever blade 371 rotates, is also restricted from moving. The blade 34 failing to move in the intersecting direction thus allows detection of the partition 370 being unattached in a performance test conducted after the blade open-close device 30 is assembled and manufactured.
The blade 34 being driven when the aperture blade 33 is unattached will now be described with reference to
As shown in
When the blade 34 in this state is to move rightward toward the closing position as the lever blade 371 rotates, the right end 34a of the blade 34 comes in contact with the first connection surface 511a of the first step 511. The blade 34, which is fallen and located on the first restriction flat surface 510, is thus restricted from moving rightward by the first step 511. The blade 34 failing to move in the intersecting direction thus allows detection of the aperture blade 33 being unattached in a performance test conducted after the blade open-close device 30 is assembled and manufactured.
The blade 34 is a rectangle extending in the intersecting direction as described above and includes the insertion portion 342 received by the lever blade 371 near its left end. In other words, the blade 34 has the right end 34a spaced from, in the intersecting direction, the insertion portion 342 that is driven as the lever blade 371 rotates. Thus, when moving rightward as the lever blade 371 rotates, for example, the blade 34 may bend, causing the right end 34a to move over the first step 511 to a position rightward from the first step 511.
In this case, as shown in
The structure according to the above embodiment produces at least one of the advantageous effects described below.
(1) The restrictor 50 that restricts the movement of the blade 34 in the intersecting direction is located on the upper surface 313 of the body 31 in the blade open-close device 30. The aperture blade 33 being an elongated member and the transmission member 37 are located between the body 31 and the blade 34 in the direction along the optical axis K. In this structure, when the aperture blade 33 or the transmission member 37 is unattached to the body 31, the restrictor 50 on the body 31 restricts the movement of the blade 34 in the intersecting direction. In other words, when the blade 34 malfunctions in a performance test conducted before the product is shipped, at least one of the components can be determined to be unattached. This reduces the likelihood that defective products to which the aperture blade 33 or the transmission member 37 is unattached are distributed.
(2) The restrictor 50 includes the first restrictor 51 that comes in contact with the blade 34 to restrict the movement of the blade 34. More specifically, the first restrictor 51 has the upper surface 313 being a facing surface with which the body 31 faces the aperture blade 33, the first restriction flat surface 510 spaced farther from the aperture blade 33 than the upper surface 313 in the optical axis direction, and the first step 511 between the upper surface 313 and the first restriction flat surface 510. In this structure, when the aperture blade 33 is unattached, the blade 34 is on the first restriction flat surface 510 by its weight and is restricted from moving in the intersecting direction by the first step 511. Thus, when the blade 34 fails to move during inspection conducted before shipment, the aperture blade 33 can be determined to be unattached.
(3) The first step 511 is located between, in the intersecting direction, the right end 34a being the first (right) end of the blade 34 and the body opening 317 in the body 31 when the blade 34 is at the opening position. The first step 511 extends in the front-rear direction intersecting with the intersecting direction. In this structure, when the aperture blade 33 is unattached, the first step 511 comes in contact with the right end 34a of the blade 34 as the blade 34 moves from the opening position to the closing position, thus restricting the blade 34 from moving to the closing position. The aperture blade 33 can thus be determined to be unattached during inspection conducted before shipment.
(4) The first step 511 has the first connection surface 511a connecting the upper surface 313 being a facing surface and the first restriction flat surface 510. The first connection surface 511a extends in a direction (front-rear direction) intersecting with the intersecting direction. When the aperture blade 33 is unattached, the first connection surface 511a comes in contact with the right end 34a of the blade 34 moving in the intersecting direction, thus restricting the movement of the blade 34. The aperture blade 33 can thus be determined to be unattached during inspection conducted before shipment.
(5) The first restrictor 51 includes the first protrusion 512 and the second protrusion 513 protruding toward the blade 34. The first protrusion 512 and the second protrusion 513 are spaced from the first step 511 in the intersecting direction. The first protrusion 512 and the second protrusion 513 are respectively received in the guide hole 343 and the elongated hole 344 in the blade 34 to restrict the movement of the blade 34 in the intersecting direction. The first protrusion 512 and the second protrusion 513 thus restrict the movement of the blade 34 when, for example, the blade 34 extending in the intersecting direction bends and causes the right end 34a of the blade 34 to move over the first step 511. Thus, when the blade 34 does not fully cover the body opening 317 during inspection conducted before shipment, the aperture blade 33 can be determined to be unattached.
(6) The restrictor 50 comes in contact with the transmission member 37 to restrict the movement of the blade 34. More specifically, the transmission member 37 includes the lever blade 371 and the partition 370 located between the lever blade 371 and the body 31 in the optical axis direction. The restrictor 50 includes the second restrictor 52 that restricts the movement of the lever blade 371. This structure restricts the movement of the lever blade 371 when the partition 370 is unattached to the body 31, causing the blade 34 to fail to move. Thus, when the blade 34 fails to move during inspection conducted before shipment, the partition 370 can be determined to be unattached.
(7) The second restrictor 52 has the placement surfaces 523, the second restriction flat surfaces 524 spaced farther from the aperture blade 33 than the placement surfaces 523 in the optical axis direction and facing the aperture blade 33 being an elongated member, and the second steps 521. Each second step 521 is located between the corresponding placement surface 523 and the corresponding second restriction flat surface 524. When the partition 370 is unattached in this structure, the lever blade 371 is on the second restriction flat surfaces 524 by its weight and is restricted from moving by the second steps 521, thus causing the blade 34 to fail to move. Thus, when the blade 34 fails to move during inspection conducted before shipment, the partition 370 can be determined to be unattached.
(8) The lever blade 371 rotates about the boss 318d that is located on one of the second restriction flat surfaces 524 and functions as a rotational shaft. The second connection surfaces 522 of the second steps 521 extend in the directions intersecting with the rotation direction of the lever blade 371. When the partition 370 is unattached in this structure, the second steps 521 restrict the rotational movement of the lever blade 371, thus causing the blade 34 to fail to move. The partition 370 can thus be determined to be unattached during inspection conducted before shipment.
In the above embodiment, the restrictor 50 includes the first restrictor 51 and the second restrictor 52. In some embodiments, the restrictor 50 may include at least one of the first restrictor 51 or the second restrictor 52.
The technique according to one or more embodiments of the present invention may provide the structure described below.
(1) A blade open-close device, comprising:
(2) The blade open-close device according to (1), wherein
the restrictor includes a first restrictor and a second restrictor, the first restrictor comes in contact with the blade to restrict the movement of the blade, and the second restrictor comes in contact with the transmission member to restrict the movement of the blade.
(3) The blade open-close device according to (2), wherein
(4) The blade open-close device according to (3), wherein
(5) The blade open-close device according to (3) or (4), wherein
(6) The blade open-close device according to any one of (3) to (5), wherein
(7) The blade open-close device according to (6), wherein
(8) The blade open-close device according to any one of (2) to (7), wherein
(9) The blade open-close device according to (8), wherein
(10) The blade open-close device according to (9), wherein
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023-110135 | Jul 2023 | JP | national |
