Blade opening and closing device

Abstract

The invention provides a blade opening and closing device. The blade opening and closing device (30) is provided with: an aperture plate (33) which extends in an intersecting direction intersecting the optical axis direction of the lens, and which has an opening (330) positioned on the optical axis of the lens; a blade member (34) which is provided so as to be movable in the intersecting direction and which opens and closes the opening; a drive unit (35) that moves the vane member to either a closed position when the opening is closed or an open position when the opening is open; a transmission member (37) that transmits the driving force generated by the drive unit to the blade member; a main body section (31) to which the aperture plate, the blade member, the drive section, and the transmission member are attached; and a restricting section (50) that restricts the movement of the vane member in the intersecting direction. An aperture plate and a transmission member are provided between the main body and the blade member in the optical axis direction. The main body portion has an upper surface (313) as an opposing surface that opposes the aperture plate and the transmission member. The restricting portion is provided on the upper surface.

Description

Technical Field

[0001] The invention relates to a blade opening and closing device. Background Art

[0002] Conventionally, there is known a light quantity adjustment device for a camera that uses a plurality of blades to make an opening formed on a substrate into a small aperture state. Patent document 1 discloses a light quantity adjustment device in which a plurality of blades are movably supported on a substrate. In the device of patent document 1, a sliding plate is provided between the blades to prevent malfunction of the blades.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2010-8894

[0004] In the device of Patent Document 1, if the slide plate is not attached during manufacturing, the blades interfere with each other when moving and cause malfunction. Therefore, if malfunction occurs during performance inspection, it is determined to be a defective product because the slide plate is not attached.

[0005] However, it is desired to improve the accuracy of detecting that the slide plate has been forgotten to be installed. Summary of the invention

[0006] A blade opening and closing device of one embodiment comprises: an extension member having an opening portion located on the optical axis of an optical part, the extension member extending in a cross direction intersecting with the optical axis direction of the optical part; a blade member arranged to be movable in the cross direction to open and close the opening portion; a driving part moving the blade member to either a closed position when the opening portion is closed or an open position when the opening portion is opened; a transmission member transmitting the driving force generated by the driving part to the blade member; a main body provided with the extension member, the blade member, the driving part and the transmission member; and a limiting part limiting the movement of the blade member in the cross direction. The extension member and the transmission member are arranged between the main body and the blade member in the optical axis direction. The main body has an opposing surface opposite to the extension member and the transmission member. The limiting part is arranged on the opposing surface.

[0007] According to the present invention, the movement of the blade member can be restricted without installing the extension member or the transmission member. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 1 is a diagram showing the overall structure of a notebook computer in which the blade opening and closing device according to the embodiment is incorporated.

[0009] Figure 2 It is a perspective view of the appearance of the blade opening and closing device.

[0010] Figure 3 It is an exploded perspective view of the blade opening and closing device.

[0011] Figure 4 This is a perspective view of the main body.

[0012] Figure 5A It is a plan view showing the appearance of the main body and the transmission mechanism when the blade member is in the closed position.

[0013] Figure 5B It is a plan view showing the appearance of the main body and the transmission mechanism when the blade member is in the open position.

[0014] Fig. 6A It is a plan view showing the appearance of the main body and the transmission mechanism when the partition plate is not installed.

[0015] Figure 6B It is a plan view showing the appearance of the main body and the transmission mechanism when the partition plate is not installed.

[0016] Figure 6C This is a perspective view of the main body and the transmission mechanism without the partition plate installed.

[0017] Fig. 7A This is a perspective view of the main body and blade components without the aperture plate installed.

[0018] Figure 7B This is a perspective view of the main body and blade components without the aperture plate installed.

[0019] Description of symbols

[0020] 10: laptop computer; 16: camera unit; 23: lens; 30: blade opening and closing device; 31: main body; 33: aperture plate; 34: blade member; 34a: right side end; 35: drive unit; 36: cover member; 37: transmission member; 50: restriction member; 51: first restriction member; 52: second restriction member; 313: upper surface; 317: main body opening; 318a, 318b, 318c, 318d: boss; 319: guide pin; 330: opening; 330a: right side end; 330b: left side end; 331: first guide hole; 332: second guide hole; 342: insertion portion; 343: guide hole; 343a: left side end; 344: long hole; 344a: left side end; 350: mounting member; 351: rotor magnet; 352: yoke; 353: coil; 354: rod part; 355: upper surface; 356: mounting hole; 357: connecting part; 370: partition plate; 371: rod blade; 372: third guide hole; 373: fourth guide hole; 374, 375: through hole; 377: shaft hole; 378: first insertion hole; 379: second insertion hole; 510: first limiting plane; 511: first step portion; 511a: first connecting surface; 512: first protrusion; 512a: left end portion; 513: second protrusion; 513a: left end portion; 521, 521a, 521b: second step portion; 522, 522a, 522b: second connecting surface; 523, 523a, 523b: configuration surface; 524, 524a, 524b: second limiting plane. DETAILED DESCRIPTION

[0021] Hereinafter, a blade opening and closing device and an electronic device having the blade opening and closing device according to an embodiment of the present invention will be described in detail with reference to the drawings.

[0022] <Electronic equipment>

[0023] Figure 1 1 is a diagram showing the appearance of a notebook computer 10 as an example of an electronic device. The notebook computer 10 has an input unit 12 such as a keyboard for performing input operations and a display unit 13 for displaying information. The display unit 13 has a frame 14. A hole 15 is formed in the frame 14. In addition, a camera unit 16 and a blade opening and closing device 30, which will be described in detail later, are assembled to the frame 14. That is, the notebook computer 10 has the blade opening and closing device 30. The blade opening and closing device 30 is assembled in the notebook computer 10 in a form of being mounted on the camera unit 16. In this way, the notebook computer 10 having a camera function is realized.

[0024] In addition, the electronic device having the blade opening and closing device 30 is not limited to the notebook computer 10, and may be, for example, an electronic device having a camera function such as a smart speaker or a home security camera.

[0025] <Camera unit>

[0026] Figure 2 FIG. 1 is a perspective view of the appearance of the blade opening and closing device 30 provided in the notebook computer 10. The camera unit 16 of the notebook computer 10 is accommodated in the blade opening and closing device 30. The camera unit 16 includes a lens 23. The lens 23 and Figure 1 The lens 23 is mounted on the frame 14 with the hole 15 formed therein aligned. The lens 23 has an optical axis K. The direction in which the optical axis K extends is indicated by an arrow Z. External light enters the lens 23 from the front end side of the arrow Z toward the base end side.

[0027] <Blade opening and closing device 30>

[0028] Figure 3 : This is an exploded stereoscopic view of the blade opening and closing device 30. The blade opening and closing device 30 extends in the direction indicated by the arrow X. The direction indicated by the arrow X represents a direction perpendicular to the arrow Z which is the optical axis direction, and is an example of a cross direction that intersects with the optical axis direction. Therefore, the cross direction is equivalent to the length direction when the blade opening and closing device 30 is observed from the optical axis direction. In addition, the cross direction is a direction parallel to the direction in which the blade component 34 moves, the details of which will be described later. The direction perpendicular to the direction of the arrow X (cross direction) and the direction of the arrow Z (optical axis direction) is indicated by the arrow Y. The direction of the arrow Y is equivalent to the width direction when the blade opening and closing device 30 is observed from the optical axis direction.

[0029] In the following description, the +Z direction is sometimes referred to as the upper direction, and the -Z direction is sometimes referred to as the lower direction. In addition, the +X direction is sometimes referred to as the right direction, and the -X direction is sometimes referred to as the left direction. Furthermore, the +Y direction is sometimes referred to as the front direction, and the -Y direction is sometimes referred to as the rear direction.

[0030] The blade opening and closing device 30 includes a main body 31 , an aperture plate 33 , a blade member 34 , a driving unit 35 , a cover member 36 , a transmission member 37 , and a restriction unit 50 .

[0031] <Main body 31>

[0032] The main body 31 is provided with an aperture plate 33, a blade member 34, a drive unit 35, a cover member 36, and a transmission member 37, which are described in detail later. The lower surface of the main body 31 is fixed to the inside of the notebook computer 10 as an electronic device by bonding or the like. In addition, the main body 31 can also be installed in the notebook computer 10 in a detachable manner.

[0033] When viewed from the optical axis direction, the main body 31 has a rectangular shape whose length along the intersecting direction is longer than the length along the front-rear direction intersecting the optical axis direction and the intersecting direction. The main body 31 has a first storage section 310 and a second storage section 311. The first storage section 310 is a recessed portion formed on the left side of a surface (upper surface) 313 on the upper side of the main body 31. The first storage section 310 stores a drive section 35 described later. The second storage section 311 is a recessed portion formed on the right side of the lower surface of the main body 31. The second storage section 311 stores the camera unit 16. A main body opening 317 is formed on the surface on the upper side of the second storage section 311. The main body opening 317 penetrates the upper surface 313 on the upper side of the second storage section 311 inwardly and outwardly along the optical axis direction. The center of the main body opening 317 is located on the optical axis K of the lens 23.

[0034] The main body 31 has an upper surface 313 as an opposing surface to the aperture plate 33 and the transmission member 37 described later in the optical axis direction. The limiting portion 50, bosses 318a, 318b, 318c, 318d, and the guide pin 319 described later are provided on the upper surface 313 of the main body 31. Specifically, the boss 318a is provided on the upper surface 313 on the left side relative to the first storage portion 310. The bosses 318b, 318c, and 318d are provided on the first storage portion 310. The boss 318d is provided on the second limiting plane 524 described later that the limiting portion 50 provided on the upper surface 313 has (refer to Figure 4 The guide pin 319 is provided on the first restriction plane 510 (see Figure 4 ). The bosses 318a, 318b, 318c, 318d and the guide pin 319 are protrusions that protrude upward.

[0035] A protrusion 42 is provided on the left and right sides of the side surface on the front side of the main body 31 relative to the second storage portion 311. The protrusion 42 protrudes forward. More specifically, the protrusion 42 is formed with an inclination such that the lower end protrudes forward more than the upper end. In addition, a protrusion similar to the protrusion 42 is also provided on the side surface on the rear side and the left side of the main body 31, but it is omitted from the figure. However, the protrusion provided on the side surface on the left side of the main body 31 protrudes toward the left side.

[0036] <Aperture plate 33>

[0037] The aperture plate 33 is disposed on the main body 31. That is, the upper surface 313 of the main body 31 is a surface facing the aperture plate 33. The aperture plate 33 is a plate-shaped extension member having a predetermined thickness in the direction of the optical axis K and extending in the left-right direction (i.e., the cross direction). The length of the aperture plate 33 in the cross direction is equal to or substantially equal to the length of the main body 31 in the cross direction.

[0038] The aperture plate 33 is formed with an opening 330, a first guide hole 331, a second guide hole 332, and mounting holes 333, 334, and 335. Bosses 318a and 318d are inserted into the mounting holes 333 and 334, respectively, and a guide pin 319 is inserted into the mounting hole 335.

[0039] The opening 330 penetrates the aperture plate 33 in the optical axis direction. The opening 330 is formed to be located on the upper side relative to the lens 23 of the camera unit 16. That is, the central portion of the opening 330 is located on the optical axis K of the lens 23 and the central portion of the main body opening 317 formed in the second storage portion 311. Therefore, the opening 330 can be formed at a position overlapping with the main body opening 317 formed in the main body 31 in the optical axis direction. The opening 330 functions as an aperture (aperture) that determines the amount of light incident on the lens 23.

[0040] When viewed from the optical axis direction, the first guide hole 331 is formed into a straight line extending in the cross direction. An insertion portion 342 of the blade member 34 described later is inserted into the first guide hole 331. The first guide hole 331 guides the movement of the insertion portion 342 in the cross direction. In addition, a boss 369 described later is inserted near the left end of the first guide hole 331.

[0041] When viewed from the optical axis direction, the second guide hole 332 is formed in an arc shape. The end of one side (rear side) of the second guide hole 332 is connected to the side surface of the front side of the first guide hole 331. A connecting portion 357 of the drive unit 35 described later is inserted into the second guide hole 332. The second guide hole 332 guides the movement of the connecting portion 357.

[0042] <Blade member 34>

[0043] The blade component 34 is formed into a plate-like shape with a predetermined thickness in the optical axis direction. When observed from the optical axis direction, the blade component 34 is formed into a rectangular shape in which the length in the cross direction is longer than the length in the front-rear direction. The blade component 34 is arranged on the aperture plate 33 in a manner that it can be moved along the cross direction by a drive unit 35 described later. That is, in the optical axis direction, the aperture plate 33 is provided between the main body 31 and the blade component 34.

[0044] The length of the blade member 34 in the cross direction is shorter than the length of the aperture plate 33 in the cross direction. Therefore, the opening 330 formed in the aperture plate 33 is switched between an open state and a closed (shielded) state by the movement of the blade member 34. That is, the blade member 34 is provided on the aperture plate 33 as an extension member in a manner that can move in the cross direction, so that the opening 330 is opened and closed.

[0045] A through hole (not shown) is formed near the left end of the blade member 34. A snap-fitting member 340 is mounted in the through hole. The snap-fitting member 340 includes a head 341 and an insertion portion 342. The head 341 is located above the blade member 34. The insertion portion 342 extends downward from the head 341 through the through hole and can be inserted into a second insertion hole 379 of the rod blade 371 described later.

[0046] A guide hole 343 is formed on the right and front side relative to the engaging part 340, and the guide hole 343 is a long hole having a long side extending along the cross direction. A guide pin 319 is inserted into the guide hole 343. In addition, a long hole 344 is formed on the rear side relative to the guide hole 343, and the long hole 344 penetrates the blade part 34 along the optical axis direction. The long hole 344 has a long side extending along the cross direction.

[0047] The blade member 34 has the above-mentioned structure, and thus moves along the cross direction by the drive unit 35 described later. Specifically, when the blade member 34 moves to the right and the right side end 34a of the blade member 34 is located at a position closer to the right side than the right side end 330a of the opening 330, the opening 330 is closed. The position of the blade member 34 at this time is sometimes referred to as a closed position. When the blade member 34 is in the closed position, the blade member 34 blocks the light that passes through the opening 330 and the main body opening 317 and heads toward the lens 23. As a result, the light does not enter the lens 23.

[0048] In addition, when the blade member 34 moves to the left and the right side end 34a of the blade member 34 is located to the left of the left side end 330b of the opening 330, the opening 330 is opened. The position of the blade member 34 at this time is sometimes referred to as the open position. When the blade member 34 is in the open position, light from the outside enters the lens 23 through the opening 361 of the cover member 36, the opening 330 of the aperture plate 33, and the main body opening 317 of the main body 31 described later. In addition, Figure 2 The blade opening and closing device 30 is shown with the blade member 34 in the open position. Figure 3 The vane opening and closing device 30 is shown with the vane member 34 in the closed position.

[0049] <Cover member 36>

[0050] The cover member 36 is arranged above the blade member 34. That is, the cover member 36 covers the camera unit 16, the main body 31, the aperture plate 33, the blade member 34 and the driving unit 35 which will be described in detail later from above. The cover member 36 has an upper plate portion 360 constituting the upper end portion of the blade opening and closing device 30. The upper plate portion 360 has a predetermined thickness in the optical axis direction and extends in the cross direction. The upper plate portion 360 has a rectangular shape in which the length in the cross direction is longer than the length in the front-back direction when viewed from the optical axis direction. In other words, the cover member 36 is a covering member that extends in the cross direction and covers the blade member 34. As described above, the blade member 34 is arranged on the aperture plate 33, so it can be said that the blade member 34 moves in the cross direction in the space surrounded by the cover member 36 as a covering member and the aperture plate 33 as an extension member. In addition, the length of the cross direction of the upper plate portion 360 is longer than the length of the left-right direction of the aperture plate 33.

[0051] The upper plate portion 360 is formed with an opening portion 361, a guide hole 362, and mounting holes 364, 365, and 366. The opening portion 361 penetrates the upper plate portion 360 along the optical axis direction. The center of the opening portion 361 is located on the optical axis K of the lens 23. That is, the opening portion 361 is located above the opening portion 330 of the aperture plate 33 and the main body opening portion 317 of the second storage portion 311. The boss 318a, the boss 369 described later, and the guide pin 319 are respectively inserted into the mounting holes 364, 365, and 366.

[0052] When viewed from the optical axis direction, the guide hole 362 extends linearly along the intersecting direction. The guide hole 362 is formed above the first guide hole 331 formed in the aperture plate 33. The guide hole 362 guides the head 341 of the blade member 34 along the intersecting direction.

[0053] A plurality of mounting portions 367 extending downward are provided at the front end, rear end, and left end of the upper plate portion 360. When viewed from the front-rear direction or the left-right direction, each mounting portion 367 is formed into a rectangular frame shape. The plurality of mounting portions 367 are engaged with the protrusions 42 formed on the main body portion 31, so that the cover member 36 is mounted on the main body portion 31 from above.

[0054] <Driver 35>

[0055] The driving unit 35 moves the blade member 34 to either a closed position where the opening 330 is closed or an open position where the opening 330 is opened. The driving unit 35 includes a rotor magnet 351, a yoke 352, a coil 353, and a terminal plate 368 mounted on a mounting member 350. The driving unit 35 is mounted on the main body 31 by housing the mounting member 350 to which the rotor magnet 351, the yoke 352, the coil 353, and the terminal plate 368 are mounted in the first housing portion 310. When the mounting member 350 is housed in the first housing portion 310, the outer shape of the mounting member 350 can be regarded as an outer shape that forms a part of the outer shape of the main body 31.

[0056] The mounting hole 356, the boss 369, and a part of the restricting portion 50 described later are formed on the upper surface (upper surface) 355 of the mounting member 350. As described above, the outer shape of the mounting member 350 forms a part of the outer shape of the main body 31, so it can be said that a part of the restricting portion 50 formed on the mounting member 350 is formed on the main body 31.

[0057] The mounting hole 356 is a through hole that penetrates the upper surface 355 in the vertical direction, and is inserted into the boss 318b formed in the first storage portion 310. The boss 369 is a protrusion that protrudes upward from the upper surface 355. In addition, the end 358 on the right side of the upper surface 355 is formed in a shape cut into an arc shape. The end 358 is formed in a shape that overlaps with the side wall surface of the arc-shaped second guide hole 332 formed in the above-mentioned aperture plate 33 in the vertical direction.

[0058] The coil 353 is a winding portion mounted by being wound on a winding mounting portion formed on the mounting member 350. The coil 353 is electrically connected to a terminal plate 368. The terminal plate 368 is a flat plate-shaped member, and is mounted on the front side of the mounting member 350 via a fixing portion 359. The terminal plate 368 is electrically connected to a power supply portion (not shown).

[0059] The yoke 352 is made of a magnetic body and has an arm 352A and an arm 352B. The arm 352A and 352B of the yoke 352 are accommodated in the above-mentioned mounting member 350. The arm 352A and 352B are magnetized to mutually different polarities as the coil 353 is energized.

[0060] The rotor magnet 351 is accommodated in the mounting member 350. The rotor magnet 351 accommodated in the mounting member 350 is arranged between the arm portion 352A and the arm portion 352B of the yoke 352. The rotor magnet 351 is composed of a magnet having different magnetic poles in the circumferential direction. As the coil 353 is energized, the arm portion 352A and the arm portion 352B are magnetized to mutually different polarities, thereby exerting a repulsive force or an attractive force on each magnet of the rotor magnet 351. Therefore, by energizing the coil 353, the rotor magnet 351 rotates. In addition, by changing the direction of the current flowing to the coil 353, the rotation direction of the rotor magnet 351 can be changed.

[0061] A rod member 354 is attached to the upper end of the rotor magnet 351. The rod member 354 extends radially outward from the rotor magnet 351. A hook-shaped connecting portion 357 is provided on the rod member 354. When the rotor magnet 351 rotates as described above, the connecting portion 357 moves along an end portion 358 formed in an arc shape on the upper surface 355.

[0062] <Transmission component 37>

[0063] The transmission member 37 is a member that moves the blade member 34 in the cross direction by transmitting the rotational driving force generated by the rotation of the rotor magnet 351 of the driving unit 35 to the blade member 34. The transmission member 37 has a partition plate 370 and a rod blade 371, and is provided between the main body 31 and the aperture plate 33 in the optical axis direction. In other words, the transmission member 37 is provided between the main body 31 and the blade member 34 in the optical axis direction.

[0064] <Partition plate 370>

[0065] The partition plate 370 is disposed above the rotor magnet 351, that is, on the upper end of the driving portion 35 and the upper surface 313 of the main body portion 31. Specifically, the partition plate 370 is disposed on the configuration surface 523 (see Figure 4 ). The partition plate 370 separates the space inside the first storage portion 310 formed in the main body 31 from the space where the rod blade 371 is located. That is, the partition plate 370 is provided between the rod blade 371 and the main body 31 in the optical axis direction. The partition plate 370 is provided with a third guide hole 372, a fourth guide hole 373, and through holes 374 and 375. The through holes 374 and 375 are through holes that penetrate the partition plate 370 in the up-down direction. The boss 369 is inserted into the through hole 374, and the boss 318d is inserted into the through hole 375.

[0066] When viewed from the optical axis direction, the third guide hole 372 is formed in a straight line along the intersecting direction. The third guide hole 372 is formed below the first guide hole 331 of the aperture plate 33. The insertion portion 342 of the blade member 34 is inserted into the third guide hole 372. The third guide hole 372 guides the movement of the insertion portion 342 along the intersecting direction.

[0067] The fourth guide hole 373 is formed in an arc shape when viewed from the optical axis direction. The fourth guide hole 373 is formed below the second guide hole 332 of the aperture plate 33. The above-mentioned connecting portion 357 is inserted into the fourth guide hole 373. The fourth guide hole 373 guides the movement of the connecting portion 357.

[0068] <Rod blade 371>

[0069] The rod blade 371 is arranged at the upper part relative to the partition plate 370. The rod blade 371 is formed by a plate-shaped first portion 371a and a 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 in a manner such that the other end of the first portion 371a and the other end of the second portion 371b are in different directions on a plane intersecting the up-down direction.

[0070] The lever blade 371 has an axial hole 377, a first insertion hole 378, and a second insertion hole 379 on its surface. The axial hole 377 is provided at a position where the first portion 371a and the second portion 371b are connected, and the boss 318d is inserted into the axial hole 377. The lever blade 371 is provided to be rotatable around the boss 318d. That is, the boss 318d functions as a rotation axis when the lever blade 371 rotates.

[0071] The first insertion hole 378 is formed in the first part 371a and is a through hole that penetrates the first part 371a in the up-down direction. The connecting part 357 is inserted into the first insertion hole 378. The second insertion hole 379 is formed in the second part 371b and is a through hole that penetrates the second part 371b in the up-down direction. The insertion part 342 of the blade member 34 is inserted into the second insertion hole 379.

[0072] <Restriction section 50>

[0073] When an error occurs during assembly and manufacturing of the blade opening and closing device 30 such that the aperture plate 33 or the partition plate 370 cannot be mounted, the restricting portion 50 restricts the movement of the blade member 34 in the intersecting direction. The restricting portion 50 is provided on the upper surface 313 of the main body 31.

[0074] Figure 4 3 is a perspective view of the main body 31 and the mounting component 350 housed in the main body 31. Figure 4As shown, the limiting portion 50 includes a first limiting portion 51 and a second limiting portion 52. The first limiting portion 51 is provided on the upper surface 313 of the main body 31. The first limiting portion 51 is formed on the left side relative to the main body opening 317, and contacts the blade member 34 to limit the movement of the blade member 34 in the cross direction.

[0075] The second limiting portion 52 is provided on the upper surface 313 of the main body 31 and the upper surface 355 of the mounting member 350. The second limiting portion 52 is formed on the left side relative to the first limiting portion 51, and limits the movement of the lever blade 371. That is, the second limiting portion 52 contacts the lever blade 371 of the transmission member 37, limits the movement of the lever blade 371, and thereby prevents the transmission of the driving force to the blade member 34 via the transmission member 37. Thus, the movement of the blade member 34 is limited.

[0076] <First Limiting Section 51>

[0077] The first limiting portion 51 has a first limiting plane 510, a first step portion 511, a first protrusion 512, and a second protrusion 513. The first limiting plane 510 is a plane intersecting the optical axis direction, and is formed at a position lower than the upper surface 313 of the main body 31. That is, the first limiting plane 510 is a surface facing the aperture plate 33 in the optical axis direction, and is formed at a position farther from the aperture plate 33 than the upper surface 313 serving as the opposing surface in the optical axis direction.

[0078] The first step portion 511 is a step between the upper surface 313 of the main body 31 and the first limiting plane 510. The first step portion 511 is provided on the left side of the main body opening 317. Specifically, the first step portion 511 is provided between the right end portion 34a, which is an end portion of one side of the blade member 34 when in the open position, and the main body opening 317 in the cross direction.

[0079] The first step portion 511 has a first connection surface 511a connecting the upper surface 313 and the first limiting plane 510. The first connection surface 511a extends in the front-to-back direction. In addition, the first connection surface 511a may extend non-parallel to the front-to-back direction as long as it extends in a direction intersecting the intersecting direction.

[0080] The first protrusion 512 is provided adjacent to the left side of the guide pin 319 provided on the front side of the first limiting plane 510. That is, the first protrusion 512 is provided at a position away from the first step portion 511 in the cross direction. The first protrusion 512 is a protrusion that protrudes upward, that is, toward the blade component 34. The second protrusion 513 is formed on the rear side of the first limiting plane 510 at a position closer to the left side than the first protrusion 512. That is, the second protrusion 513 is provided at a position away from the first step portion 511 in the cross direction. The second protrusion 513 is a protrusion that protrudes upward, that is, toward the blade component 34.

[0081] In addition, the first limiting portion 51 is not limited to having both the first protrusion 512 and the second protrusion 513, and may have one of the first protrusion 512 or the second protrusion 513, or may have three or more protrusions. In addition, the first limiting portion 51 may not have the first protrusion 512 and the second protrusion 513.

[0082] <Second Limiting Section 52>

[0083] The second limiting portion 52 is provided on the upper surface 313 of the main body 31 and the upper surface 355 of the mounting member 350 on the left side relative to the first limiting portion 51. As described above, the outer shape of the mounting member 350 accommodated in the first accommodation portion 310 forms a part of the outer shape of the main body 31, so it can be said that the second limiting portion 52 is provided on the main body 31.

[0084] The second limiting portion 52 has second step portions 521a, 521b (collectively referred to as the second step portion 521), configuration surfaces 523a, 523b (collectively referred to as the configuration surface 523), and second limiting planes 524a, 524b (collectively referred to as the second limiting plane 524). The configuration surface 523 is a plane intersecting the optical axis direction, and is formed at a position lower than the first limiting plane 510 of the first limiting portion 51. That is, the configuration surface 523 is provided at a position farther from the aperture plate 33 than the first limiting plane 510. The configuration surface 523a is a surface formed on the main body 31, and the configuration surface 523b is the upper surface 355 of the mounting member 350. The partition plate 370 of the above-mentioned transmission member 37 is arranged on the configuration surface 523.

[0085] The second limiting plane 524 is a plane intersecting the optical axis direction, and is formed at a position lower than the configuration surface 523. That is, the second limiting plane 524 is provided at a position farther from the aperture plate 33 than the configuration surface 523, and is opposed to the aperture plate 33 in the optical axis direction. The second limiting plane 524a is a surface formed on the main body 31, and the second limiting plane 524b is a surface formed on the mounting member 350.

[0086] The second step portion 521 is a step between the configuration surface 523 and the second limiting plane 524. The second step portion 521 has a second connecting surface 522 that connects the configuration surface 523 and the second limiting plane 524. Specifically, the second step portion 521a is a step between the configuration surface 523a and the second limiting plane 524a, and the second connecting surface 522a connects the configuration surface 523a and the second limiting plane 524a. The second step portion 521b is a step between the configuration surface 523b and the second limiting plane 524b, and the second connecting surface 522b connects the configuration surface 523b and the second limiting plane 524b.

[0087] The second connection surface 522 of the second step portion 521 extends non-parallel to the front-rear direction according to the shape of the lever blade 371. Specifically, the second connection surface 522a of the second step portion 521a is formed along the direction in which the second portion 371b of the lever blade 371 extends. The second connection surface 522b of the second step portion 521b is formed along the direction in which the first portion 371a of the lever blade 371 extends.

[0088] <Action>

[0089] Reference Figure 5A , Figure 5B , the driving of the blade member 34 by the driving unit 35 and the transmission member 37 is described. Figure 5A , Figure 5B is a partial top view of the main body 31, the driving unit 35, and the transmission member 37 as viewed from the optical axis K. Figure 5A The blade member 34 is shown in the closed position. Figure 5B The vane member 34 is shown in an open position.

[0090] When the blade member 34 is in the closed position, Figure 5A The rotor magnet 351 and the connecting portion 357 shown in the figure rotate in the clockwise direction. In this case, the edge of the first insertion hole 378 is engaged with the connecting portion 357, and the lever blade 371 rotates around the boss 318d set on the second limiting plane 524 with the boss 318d as the rotation axis. Figure 5A 379 and the blade member 34 start to move in the counterclockwise direction. As a result, the edge of the second insertion hole 379 engages with the insertion portion 342 of the blade member 34, and the insertion portion 342 is guided to move to the left by the first guide hole 331 of the aperture plate 33 and the third guide hole 372 of the partition plate 370. As the insertion portion 342 moves, the blade member 34 provided with the insertion portion 342 is guided to move to the left in the cross direction by the guide pin 319. Then, the blade member 34 moves to an open position where the right end portion 34a is closer to the left side than the left end portion 330b of the opening portion 330 of the aperture plate 33.

[0091] On the other hand, when the blade member 34 is in the open position, Figure 5B The rotor magnet 351 and the connecting portion 357 shown in FIG. 1 rotate counterclockwise. In this case, the edge of the first insertion hole 378 engages with the connecting portion 357, and the rod blade 371 moves around the boss 318b. Figure 5B379 begins to move in the clockwise direction. As a result, the edge of the second insertion hole 379 engages with the insertion portion 342, and the insertion portion 342 is guided to the right by the first guide hole 331 of the aperture plate 33 and the third guide hole 372 of the partition plate 370. As the insertion portion 342 moves, the blade component 34 provided with the insertion portion 342 is guided by the guide pin 319 to move to the right side in the cross direction. Then, the blade component 34 moves to a closed position where the right end portion 34a is closer to the right side than the right end portion 330a of the opening portion 330 of the aperture plate 33.

[0092] Next, refer to Fig. 6A , Figure 6B , Figure 6C , the driving of the blade member 34 by the driving unit 35 and the transmission member 37 when the partition plate 370 is not installed will be described. Fig. 6A , Figure 6B is a partial top view of the main body 31, the driving unit 35, and the lever blade 371 of the transmission member 37 as viewed from the optical axis K. Fig. 6A The blade member 34 is shown in the closed position. Figure 6B The blade member 34 is shown in the open position. Figure 6C yes Fig. 6A A partial perspective view of the closed position is shown.

[0093] In this case, since the partition plate 370 is not installed, the lower surface of the lever blade 371 is Figure 6B In the open position shown, the lever blade 371 contacts the upper surface 355 of the mounting member 350, that is, the configuration surface 523b. Figure 6B Rotate clockwise and move to Fig. 6A In the closed position shown in FIG. 1 , the lever blade 371 is located to the right of the second step portions 521a and 521b. At this time, the lever blade 371 falls under its own weight to the upper portion of the second restriction plane 524 formed below the configuration surface 523 (see FIG. 1 ). Figure 6C ).

[0094] As described above, the second connection surface 522a of the second step portion 521a is formed along the direction in which the second portion 371b of the lever blade 371 extends. Therefore, the side surface 381 of the second portion 371b of the lever blade 371 is opposite to the second connection surface 522a of the second step portion 521a. In addition, the second connection surface 522b of the second step portion 521b is formed along the direction in which the first portion 371a of the lever blade 371 extends. Therefore, the side surface 380 of the first portion 371a of the lever blade 371 is opposite to the second connection surface 522b of the second step portion 521b.

[0095] When the lever blade 371 is moved from the closed position to the open position again, the lever blade 371 is moved Fig. 6A When the lever blade 371 rotates counterclockwise, the side surface 381 contacts the second connection surface 522a of the second step portion 521a, and the side surface 380 contacts the second connection surface 522b of the second step portion 521b. Therefore, the counterclockwise rotation of the lever blade 371 is restricted by the second restriction portion 52. In other words, the lever blade 371 is restricted by the second connection surface 522 extending in a direction intersecting the rotation direction of the lever blade 371.

[0096] By limiting the rotation of the lever blade 371, the movement of the blade member 34 that moves in the cross direction in conjunction with the rotation of the lever blade 371 is also limited. As a result, when the performance inspection is performed after the assembly and manufacturing of the blade opening and closing device 30, it is detected that the partition plate 370 is not installed based on the poor movement of the blade member 34 in the cross direction.

[0097] Next, refer to Fig. 7A , Figure 7B , the driving of the blade member 34 when the aperture plate 33 is not installed will be described. Fig. 7A , Figure 7B 3 is a perspective view of the main body 31 and the blade member 34 without the aperture plate 33 installed. Fig. 7A The blade member 34 is shown in the open position. Fig. 7A As shown, since the aperture plate 33 is not provided, the lower surface of the blade member 34 contacts the first limiting plane 510 of the first limiting portion 51 formed on the upper surface of the main body 31. That is, the blade member 34 falls on the first limiting plane 510 formed at a position lower than the upper surface 313 of the main body 31 due to its own weight.

[0098] like Fig. 7A As shown, the right end portion 34a of the blade member 34 in the open position is located at a position on the left side of the main body opening portion 317. More specifically, the right end portion 34a of the blade member 34 is located at a position on the left side of the first step portion 511. In addition, the first protrusion 512 of the first limiting portion 51 is inserted into the guide hole 343 formed in the blade member 34. The second protrusion 513 of the first limiting portion 51 is inserted into the long hole 344 formed in the blade member 34.

[0099] In this state, when the blade member 34 is to move to the right side toward the closed position in conjunction with the rotation of the lever blade 371, the right side end portion 34a of the blade member 34 contacts the first connection surface 511a of the first step portion 511. Therefore, the movement of the blade member 34 falling on the first limiting plane 510 to the right is restricted by the first step portion 511. As a result, during the performance inspection after the assembly and manufacturing of the blade opening and closing device 30, it is detected that the aperture plate 33 is not installed based on the poor movement of the blade member 34 in the cross direction.

[0100] As described above, the blade member 34 has a rectangular shape extending in the cross direction, and the insertion portion 342 inserted into the lever blade 371 is provided near the left end portion of the blade member 34. That is, the right end portion 34a of the blade member 34 is away from the insertion portion 342 driven in conjunction with the rotation of the lever blade 371 in the cross direction. Therefore, when the blade member 34 moves to the right in conjunction with the rotation of the lever blade 371, if the blade member 34 is bent, the right end portion 34a passes over the first step portion 511, and the blade member 34 may move to a position closer to the right than the first step portion 511.

[0101] In this case, if Figure 7B As shown, the guide hole 343 into which the first protrusion 512 is inserted moves to the right relative to the first protrusion 512. Then, the left end 512a of the first protrusion 512 contacts the left end 343a of the guide hole 343. Similarly, the long hole 344 into which the second protrusion 513 is inserted moves to the right relative to the second protrusion 513. Then, the left end 513a of the second protrusion 513 contacts the left end 344a of the long hole 344. Therefore, by inserting the first protrusion 512 into the guide hole 343 and the second protrusion 513 into the long hole 344, the movement of the blade part 34 to the right is restricted. At this time, the right end 34a of the blade part 34 is located between the right end and the left end of the main body opening 317. That is, the main body opening 317 is not completely shielded by the blade part 34. In other words, the positions of the first protrusion 512 and the second protrusion 513 are determined so that the right end 34a of the blade member 34 is located to the left of the right end of the main body opening 317. As a result, when the performance inspection is performed after the assembly and manufacturing of the blade opening and closing device 30, when the main body opening 317 is not completely covered, it is determined that the aperture plate 33 is not installed.

[0102] According to the above-described embodiment, at least one of the following effects can be obtained.

[0103] (1) A limiting portion 50 for limiting the movement of the blade component 34 in the cross direction is provided on the upper surface 313 of the main body 31 of the blade opening and closing device 30. In the direction of the optical axis K, an aperture plate 33 and a transfer component 37 as extension components are provided between the main body 31 and the blade component 34. Thus, in a case where the aperture plate 33 or the transfer component 37 is not installed on the main body 31, the movement of the blade component 34 along the cross direction is limited by the limiting portion 50 provided on the main body 31. That is, in the stage of performance inspection before product shipment, in the case where the blade component 34 malfunctions, it can be determined that there is a component that is not installed. As a result, the circulation of defective products in which the aperture plate 33 or the transfer component 37 is not installed can be suppressed.

[0104] (2) The limiting portion 50 has a first limiting portion 51 that contacts the blade member 34 and limits the movement of the blade member 34. Specifically, the first limiting portion 51 has: an upper surface 313, which is an opposing surface of the main body 31 and the aperture plate 33; a first limiting plane 510, which is arranged at a position farther from the aperture plate 33 than the upper surface 313 in the optical axis direction; and a first step portion 511, which is a step between the upper surface 313 and the first limiting plane 510. Thus, when the aperture plate 33 is not installed, the blade member 34 is located on the first limiting plane 510 due to its own weight, and the movement of the blade member 34 in the cross direction is limited by the first step portion 511. As a result, when there is a poor movement of the blade member 34 during the pre-shipment inspection, it can be determined that the aperture plate 33 has not been installed.

[0105] (3) The first step portion 511 is disposed in the cross direction between the end portion of one side (right side) of the blade member 34 when in the open position, that is, the right side end portion 34a and the main body opening portion 317 of the main body portion 31, and extends in the front-to-back direction intersecting the cross direction. Thus, when the aperture plate 33 is not installed, when the blade member 34 moves from the open position to the closed position, the first step portion 511 contacts the right side end portion 34a of the blade member 34, restricting the blade member 34 from moving to the closed position. As a result, it can be determined that the aperture plate 33 is not installed during the inspection before shipment.

[0106] (4) The first step portion 511 has a first connection surface 511a that connects the upper surface 313 as the opposing surface to the first limiting plane 510. The first connection surface 511a extends in a direction (front-rear direction) that intersects the intersection direction. Therefore, when the aperture plate 33 is not installed, the first connection surface 511a contacts the right end 34a of the blade member 34 that moves along the intersection direction, thereby limiting the movement of the blade member 34. Therefore, during the inspection before shipment, it can be determined that the aperture plate 33 is not installed.

[0107] (5) The first limiting portion 51 has a first protrusion 512 and a second protrusion 513 protruding toward the blade component 34. The first protrusion 512 and the second protrusion 513 are arranged at a position away from the first step portion 511 in the cross direction. When the first protrusion 512 and the second protrusion 513 are respectively inserted into the holes formed in the blade component 34, namely the guide hole 343 and the long hole 344, the movement of the blade component 34 in the cross direction is restricted. Thus, even if the blade component 34 extending in the cross direction is bent, etc., so that the right side end 34a of the blade component 34 jumps onto the first step portion 511, the movement of the blade component 34 can be restricted by the first protrusion 512 and the second protrusion 513. As a result, when the main body opening 317 is not completely closed by the blade component 34 during the inspection at the time of shipment, it can be determined that the aperture plate 33 is not installed.

[0108] (6) The limiting portion 50 contacts the transmission member 37 to limit the movement of the blade member 34. Specifically, the transmission member 37 includes a rod blade 371 and a partition plate 370 provided between the rod blade 371 and the main body 31 in the optical axis direction. The limiting portion 50 includes a second limiting portion 52 for limiting the movement of the rod blade 371. Thus, when the partition plate 370 is not installed on the main body 31, the movement of the rod blade 371 is limited, and the blade member 34 has poor movement. As a result, when there is poor movement of the blade member 34 during the pre-shipment inspection, it can be determined that the partition plate 370 is not installed.

[0109] (7) The second limiting portion 52 includes: a configuration surface 523; a second limiting plane 524, which is opposed to the aperture plate 33 as an extension member at a position farther from the aperture plate 33 than the configuration surface 523 in the optical axis direction; and a second step portion 521. The second step portion 521 is a step between the configuration surface 523 and the second limiting plane 524. Thus, when the partition plate 370 is not installed, the rod blade 371 is located on the second limiting plane 524 due to its own weight, and the movement of the rod blade 371 is limited by the second step portion 521, resulting in poor movement of the blade member 34. As a result, when there is poor movement of the blade member 34 during the pre-shipment inspection, it can be determined that the partition plate 370 is not installed.

[0110] (8) The lever blade 371 rotates around the boss 318d that functions as a rotation axis and is provided on the second limiting plane 524. The second connection surface 522 of the second step portion 521 extends in a direction that intersects the rotation direction of the lever blade 371. Thus, when the partition plate 370 is not installed, the rotational movement of the lever blade 371 is restricted by the second step portion 521, resulting in poor movement of the blade member 34. As a result, it can be determined that the partition plate 370 is not installed during the inspection before shipment.

[0111] In the above embodiment, the case where the restricting portion 50 includes the first restricting portion 51 and the second restricting portion 52 is described. However, the restricting portion 50 may include at least one of the first restricting portion 51 and the second restricting portion 52.

[0112] In addition, the present technology can adopt the following structures.

[0113] (1) A blade opening and closing device, comprising: an extension member, which has an opening portion located on the optical axis of an optical part, the extension member extending along a cross direction that crosses the optical axis direction of the optical part; a blade member, which is configured to be movable along the cross direction to open and close the opening portion; a driving member, which moves the blade member to either a closed position when the opening portion is closed or an open position when the opening portion is opened; a transmission member, which transmits the driving force generated by the driving member to the blade member; a main body, which is provided with the extension member, the blade member, the driving member and the transmission member; and a limiting member, which limits the movement of the blade member in the cross direction, wherein the extension member and the transmission member are provided between the main body and the blade member in the direction of the optical axis, the main body having an opposing surface opposite to the extension member and the transmission member, and the limiting member is provided on the opposing surface.

[0114] (2) The blade opening and closing device according to (1), wherein the limiting portion includes: a first limiting portion that contacts the blade member to limit movement of the blade member; and a second limiting portion that contacts the transmission member to limit movement of the blade member.

[0115] (3) A blade opening and closing device according to (2), wherein the first limiting portion comprises: a first limiting plane, which is opposite to the extension part at a position farther from the extension part than the opposing surface in the direction of the optical axis; and a first step portion, which is a step between the opposing surface of the main body and the first limiting plane.

[0116] (4) A blade opening and closing device according to (3), wherein the main body has a main body opening at a position overlapping with the opening along the optical axis direction, and the first step portion is arranged in the cross direction between an end portion of one side of the blade part at the open position and the main body opening.

[0117] (5) A blade opening and closing device according to (3) or (4), wherein the first step portion has a first connecting surface connecting the first limiting plane and the opposing surface, and the first connecting surface extends in a direction intersecting the crossing direction, and when the end of one side of the blade component contacts the first connecting surface, the movement of the blade component in the crossing direction is restricted.

[0118] (6) A blade opening and closing device according to any one of (3) to (5), wherein the first limiting portion has a protrusion protruding toward the blade component, and when the protrusion is inserted into a hole provided in the blade component, the movement of the blade component in the cross direction is restricted.

[0119] (7) The blade opening and closing device according to (6), wherein the protrusion is provided at a position away from the first step portion in the intersecting direction.

[0120] (8) A blade opening and closing device according to any one of (2) to (7), wherein the transmission component comprises: a rod blade that transmits a driving force to the blade component; and a partition plate that is arranged between the rod blade and the main body in the direction of the optical axis, and the second limiting portion limits the movement of the rod blade.

[0121] (9) A blade opening and closing device according to (8), wherein the second limiting portion comprises: a configuration surface for configuring the partition plate; a second limiting plane, which is opposite to the extension part at a position farther from the extension part than the configuration surface in the direction of the optical axis; and a second step portion, which is a step between the configuration surface and the second limiting plane.

[0122] (10) A blade opening and closing device according to (9), wherein the rod blade rotates around a rotation axis arranged on the second limiting plane, and the second step portion has a second connecting surface connecting the configuration surface and the second limiting plane, and the second connecting surface extends in a direction intersecting the rotation direction of the rod blade.

Claims

1. A blade opening and closing device, comprising: an extension member having an opening portion located on the optical axis of the optical portion, the extension member extending in a direction intersecting with the optical axis direction of the optical portion; a blade member configured to be movable along the intersecting direction to open and close the opening; a driving unit configured to move the blade member to any one of a closed position when the opening is closed and an open position when the opening is opened; a transmission member for transmitting the driving force generated by the driving portion to the blade member; a main body, which is provided with the extension part, the blade part, the driving part and the transmission part; as well as a restriction portion that restricts movement of the blade member in the cross direction, In the optical axis direction, the extension member and the transmission member are provided between the main body and the blade member. The main body has an opposing surface facing the extension member and the transmission member. The restricting portion is provided on the opposing surface.

2. The blade opening and closing device according to claim 1, wherein: The limiting portion has: a first restricting portion that contacts the blade member to restrict movement of the blade member; and The second restricting portion contacts the transmission member to restrict movement of the blade member.

3. The blade opening and closing device according to claim 2, wherein: The first limiting portion has: a first limiting plane opposed to the extension member at a position farther from the extension member than the opposing surface in the optical axis direction; and The first step portion is a step between the facing surface of the main body and the first limiting plane.

4. The blade opening and closing device according to claim 3, wherein: The main body has a main body opening at a position overlapping with the opening along the optical axis direction. The first step portion is provided between an end portion on one side of the blade member at the open position and the main body opening in the intersecting direction.

5. The blade opening and closing device according to claim 4, wherein: The first step portion has a first connecting surface connecting the first limiting plane and the opposing surface, and the first connecting surface extends in a direction intersecting the intersecting direction. When the end portion on the one side of the blade member contacts the first connection surface, movement of the blade member in the intersecting direction is restricted.

6. The blade opening and closing device according to any one of claims 3 to 5, wherein: The first restricting portion has a protruding portion protruding toward the blade member, When the protrusion is inserted into the hole provided in the blade member, movement of the blade member in the intersecting direction is restricted.

7. The blade opening and closing device according to claim 6, wherein: The protrusion is provided at a position away from the first step portion in the intersecting direction.

8. The blade opening and closing device according to claim 2, wherein: The transmission component has: a lever blade that transmits a driving force to the blade member; and a partition plate disposed between the rod blade and the main body in the direction of the optical axis, The second restricting portion restricts movement of the lever blade.

9. The blade opening and closing device according to claim 8, wherein: The second limiting portion has: A configuration surface for configuring the partition plate; a second limiting plane, which is opposed to the extension member at a position farther from the extension member than the configuration plane in the optical axis direction; as well as The second step portion is a step between the configuration surface and the second limiting plane.

10. The blade opening and closing device according to claim 9, wherein: The lever blade rotates about a rotation axis arranged in the second limiting plane, The second step portion has a second connecting surface connecting the configuration surface and the second limiting plane. The second connection surface extends in a direction intersecting a rotation direction of the lever blade.

Images