Blade driving device, camera device, and electronic apparatus

Abstract

The invention discloses a blade driving device which can suppress the deviation of the minimum diameter of a light transmission hole formed by a blade even if the position of a mechanical stopper is deviated in the blade driving device. The blade drive device is provided with a plurality of blades each having an adjustment hole into which the adjustment pin is movably fitted and a shaft hole into which the shaft pin is immovably fitted, the plurality of blades being capable of rotating around the shaft pin so as to form a light-transmitting hole through which light incident on the lens body passes. The adjustment hole has a first section extending from a first position and a second section extending from a second position. Under the condition that the adjusting pin is located in the second section, the adjusting hole in the second section extends along the movement track line of the adjusting pin, so that the diameter of the light transmitting hole is minimum, and at the moment, the movable ring abuts against the base at the position of the mechanical check block.

Description

Technical Field

[0001] The present invention relates to a blade drive device suitable for electronic devices such as smartphones, a camera device having the blade drive device, and electronic devices. Background Art

[0002] Various techniques have been proposed for adjusting the amount of light incident on a lens body by sliding the blades of a camera device. The variable aperture disclosed in Patent Document 1 has a fixed base and a rotating base configured to surround a lens. A plurality of blades each having a guide hole is arranged on the circumference of the fixed base, and the plurality of blades are supported so as to rotate freely. In addition, a guide post inserted into each guide hole is arranged on the rotating base. In this variable aperture, the guide post moves in the guide hole by rotating the rotating base relative to the fixed base, thereby rotating the blade. In this way, the diameter of the light-transmitting hole formed by the plurality of blades surrounding can be adjusted. Prior art literature Patent Literature

[0003] Patent Document 1: China Patent No. 115480433 Summary of the invention Problems to be solved by the invention

[0004] In the above structure, when determining the position of the light transmission hole to have the minimum diameter by the position of the mechanical stopper that limits the movement of the guide post, there is a problem that the minimum diameter of the light transmission hole also varies because the position of the mechanical stopper varies within its tolerance range. The deviation in the diameter of the light transmission hole is directly related to the deviation in the amount of light incident on the lens, and when the diameter of the light transmission hole is small, the influence is greater than when the diameter is large.

[0005] The present invention has been made in view of such a problem, and an object of the present invention is to provide a blade driving device, a camera device, and an electronic device capable of suppressing variations in the minimum diameter of a light-transmitting hole formed by a blade even if there are variations in the position of a mechanical stopper. Means for solving problems

[0006] In order to solve the above-mentioned problems, the blade drive device as a preferred embodiment of the present invention is characterized in that it comprises: a first component, the first component has a plurality of adjustment pins arranged on a circumference centered on the optical axis of the lens body; a second component, the second component has an axis pin arranged corresponding to the adjustment pin; and a plurality of blades, the plurality of blades respectively having an adjustment hole for movably engaging the adjustment pin and an axis hole for immovably engaging the axis pin, the plurality of blades being able to rotate around the axis pin and being combined to form a light-transmitting hole at the center thereof for passing light incident on the lens body, the first component and the second component The components are constructed to be combined with each other, whereby one side rotates relative to the other side with the optical axis of the lens body as the center, and the other side has a mechanical stopper, which stops the rotation of the one side by causing the one side to abut against the other side; the adjustment hole has a first section extending from the first position and a second section extending from the second position; when the adjustment pin is located in the second section, the adjustment hole in the second section extends along the moving trajectory of the adjustment pin, and the diameter of the light-transmitting hole is the smallest, at which time the first component abuts against the second component at the mechanical stopper.

[0007] In this aspect, the minimum diameter of the aperture that limits the passage of light incident on the lens body may be the minimum diameter of the light-transmitting hole formed by the blade.

[0008] Furthermore, when the adjustment pin is located in the first interval, the diameter of the light-transmitting hole may change by relative rotation of the first component and the second component, and when the adjustment pin is located in the first position, the diameter of the light-transmitting hole formed by the blade may be maximum.

[0009] Furthermore, a third member having an opening may be provided, wherein the diameter of the opening is the maximum diameter of an aperture that limits the passage of light incident on the lens body.

[0010] Furthermore, the maximum diameter of the light-transmitting hole formed by the blade may be larger than the diameter of the opening of the third member, which is the maximum diameter of the aperture.

[0011] The first section may include an intermediate section that is smoothly connected to the second section.

[0012] Alternatively, one of the first component and the second component may include a magnet and the other may include a magnetic component, and when the first component and the second component abut against each other at the mechanical stopper, the magnet and the magnetic component may face each other in the rotational direction.

[0013] The device may further include a fourth member having a coil facing the magnet, wherein the magnet and the coil generate an electromagnetic force for relatively rotating the first member and the second member.

[0014] A camera device as another preferred aspect of the present invention includes the above-mentioned blade drive device.

[0015] An electronic device as another preferred embodiment of the present invention includes the above-mentioned camera device. Effects of the Invention

[0016] The blade drive device of the present invention comprises: a first component, the first component has a plurality of adjustment pins arranged on a circumference centered on the optical axis of the lens body; a second component, the second component has an axis pin arranged corresponding to the adjustment pin; and a plurality of blades, the plurality of blades respectively having an adjustment hole for movably engaging the adjustment pin and an axis hole for immovably engaging the axis pin, the plurality of blades being able to rotate around the axis pin and being combined to form a light-transmitting hole at the center thereof for passing light incident on the lens body, the first component and the second component being configured to be combined with each other, The one side rotates relative to the other side with the optical axis of the lens body as the center, and the other side has a mechanical stopper, and the mechanical stopper stops the rotation of the one side by the abutment of the one side with the other side; the adjustment hole has a first section extending from the first position and a second section extending from the second position; when the adjustment pin is located in the second section, the adjustment hole in the second section extends along the moving trajectory of the adjustment pin, and the diameter of the light-transmitting hole is the smallest, and at this time, the first component and the second component abut at the mechanical stopper. When the adjustment pin is located in the second section, the adjustment hole extends along the moving trajectory of the adjustment pin, so even if the adjustment pin moves, the blade does not rotate, and therefore the diameter of the light-transmitting hole does not change. If the first component and the second component abut at the mechanical stopper in the second section, even if there is a deviation in the position of the mechanical stopper, the state of rotation of the blade does not differ. Therefore, even if there is a deviation in the position of the mechanical stopper, the deviation of the minimum diameter of the light-transmitting hole formed by the blade can be suppressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a smartphone 9 equipped with the camera device 1 including the blade drive device 5 as one embodiment of the present invention. Figure 2 yes Figure 1 A stereoscopic view of the camera device 1 is shown in FIG. Figure 3 yes Figure 2 An exploded perspective view of the camera device 1. Figure 4 When viewed from the front of the mechanical stopper MSA Figure 2 A three-dimensional view of the blade driving device body 50. Figure 5 This is a perspective view of the blade drive device main body 50 as viewed from the front of the mechanical stopper MSB. Figure 6 It is an exploded perspective view of the blade drive device main body 50 . Figure 7 yes Figure 4 A-A' line cross-sectional view. Figure 8 yes Figure 4 BB' line cross-sectional view. Fig. 9 It is a plan view of the blade 550 showing the relationship between the shape of the adjustment hole 552 and the adjustment pin 525 . Fig.10 It is a top view showing the blade 550 when the movable ring 520 is in contact with the mechanical stopper MSA. Fig.11 It is a plan view showing the blade 550 when the movable ring 520 is in contact with the mechanical stopper MSB. Fig.12 This is a diagram showing the relationship between the rotation angle of the movable ring 520 and the diameter of the light transmission hole 555 in comparison with the prior art. Mode for carrying out the invention

[0018] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figure 1 As shown, a camera device 1 as one embodiment of the present invention is accommodated in a smartphone 9 as an electronic device.

[0019] like Figure 1 , Figure 2 as well as Figure 3 As shown in FIG. 1 , the camera device 1 includes a lens body 7, a lens driving device 8, a blade driving device 5, and an image sensor 6. Figure 2 as well as Figure 3 , only the housing 10 is shown for the lens driving device 8. The blade driving device 5 includes a blade driving device body 50 and a peripheral portion 20. In addition, as described later, the blade driving device 5 includes a first component to a fourth component. The blade driving device body 50 is bonded and fixed to the mounting portion 7a provided on the lens body 7, and moves together with the lens body 7, so that the positional relationship with the lens body 7 remains unchanged. The peripheral portion 20 is mounted on the housing 10.

[0020] Hereinafter, the direction of the optical axis O of the lens body 7, which is also the direction in which light from the subject is incident, is referred to as the Z direction, a direction orthogonal to the Z direction is referred to as the X direction, and a direction orthogonal to both the Z direction and the X direction is referred to as the Y direction. In addition, the side of the optical axis O of the lens body 7 facing the subject, that is, the +Z side, is often referred to as the front side, and the side opposite to the subject, that is, the −Z side, where the image sensor 6 is provided, is often referred to as the rear side.

[0021] The housing 10 of the lens driving device 8 has a rectangular parallelepiped shape with an open rear side, and has a rectangular front wall 11 parallel to the XY plane, and four side walls 12 extending rearward from four sides of the front wall 11. A circular through hole 11a for light from a subject to pass through is formed in the front wall 11. The housing 10 accommodates the lens body 7.

[0022] The peripheral portion 20 of the blade driving device 5 is a fourth component, and includes a frame 40 mounted on the front side of the front wall 11 of the housing 10, an FPC (Flexible printed circuits) 21 assembled to the frame 40, coils 31a and 31b, and reinforcing plates 32a and 32b.

[0023] The frame 40 has a front side surface 41 of a generally quadrilateral shape, an inner side surface 42 of a generally cylindrical shape that penetrates the front side surface 41 and extends to the rear side, and an outer side surface 43 that extends to the rear side from the outer periphery of the front side surface 41. Coil supports 45a and 45b are formed on the inner side surface 42 corresponding to the prescribed diagonal angle of the quadrilateral. A cutout 44 for inserting the FPC 21 is formed at the rear end of the outer side surface 43 near the corner where the coil supports 45a and 45b are not formed. In addition, a groove 44a for installing the FPC 21 is provided on the rear side of the frame 40 following the cutout 44.

[0024] The FPC 21 includes a terminal portion 21a connected to the outside of the blade drive device 5, an extension portion 22a and 22b that is divided into two branches and extends respectively from the terminal portion 21a, and a rise portion 23a and 23b that are respectively arranged at the front end of the extension portion 22a and 22b. The terminal portion 21a is arranged along the outside of the side wall 12 of the housing 10 and is placed in the frame 40 from the cutout portion 44. The extension portions 22a and 22b are accommodated in the groove 44a and reach the coil holders 45a and 45b. The rise portions 23a and 23b are respectively set up toward the front side from the extension portions 22a and 22b, and are respectively fixed to the coil holders 45a and 45b via the reinforcing plates 32a and 32b. Coils 31a and 31b are respectively fixed to the inner surfaces of the rise portions 23a and 23b and are electrically connected thereto. Thus, the coils 31a and 31b are powered from the outside via the FPC 21.

[0025] like Figure 4 , Figure 5 as well as Figure 6 As shown, the blade drive device body 50 includes: a base 510, four balls 511, magnetic sheets 517a and 517b, a movable ring 520, two magnets 521, a fixed ring 530, an opening plate 540, six blades 550, and a cover 560. The first component corresponds to the movable ring 520, the second component corresponds to the structure obtained by combining the base 510 and the fixed ring 530, and the third component corresponds to the opening plate 540.

[0026] The rear surface of the base 510 is fixed to the carrier portion 7a of the lens body 7, and the base 510 is in a cylindrical annular shape close to the optical axis O as the center. A plurality of base abutment portions 510a are provided along the circumference at the outermost periphery of the cylindrical front side surface, and an inverted L-shaped base hook portion 510b is provided at two locations of the cylindrical side surface. In addition, two ball receiving portions 512a are provided along the circumference at intervals of 90 degrees at positions close to the inner periphery of the cylindrical front side surface. In addition, two ball receiving portions 512b are provided at intervals of 90 degrees at positions on the opposite side of the circumferential direction to the two ball receiving portions 512a. The ball receiving portion 512a is a V-shaped groove that is recessed toward the rear side, and the ball receiving portion 512b is a U-shaped groove that is recessed toward the rear side and has a flat bottom.

[0027] In addition, the bracket receiving parts 515a and 515b are provided in the form of two outer portions located at two places on the opposite sides of the cylindrical circumferential direction by digging out the positions between the two ball receiving parts 512a and the two ball receiving parts 512b. The simple cross-sectional shape of the bracket receiving parts 515a and 515b observed from the front side is a fan-shaped shape centered on the optical axis O. In the bracket receiving part 515b on one side of the concave part of the cross-sectional fan-shaped, mechanical stops MSA and MSB for limiting the rotation of the movable ring 520 are formed on the end faces on both sides in the circumferential direction. No mechanical stopper is formed in the bracket receiving part 515a on the opposite side. Pocket-shaped magnetic sheet holders 518a and 518b are provided adjacent to the mechanical stops MSA and MSB. Magnetic sheets 517a and 517b, which are magnetic components formed of a magnetic material such as iron, are stored and fixed in the magnetic sheet holders 518a and 518b.

[0028] The fixing ring 530 is in the shape of a ring with the optical axis O of the lens body 7 as the center, and includes a disk portion 530c having a through hole 531 in the center, a plurality of fixing ring abutting portions 530a extending from the edge of the disk portion 530c to the rear side, and two fixing ring hook portions 530b extending from the edge of the disk portion 530c to the rear side in an L-shape. The fixing ring 530 is combined with the base hook portion 510b through the fixing ring hook portion 530b, and the fixing ring abutting portion 530a abuts and is fixed to the base abutting portion 510a, and is integrally formed with the base 510 at the front side of the base 510. In addition, receiving recesses 536a and 536b are provided at positions corresponding to the bracket receiving portions 515a and 515b.

[0029] The front surface of the disk portion 530c is divided into three parts: the outermost peripheral portion 530d, the central portion 530e, and the innermost peripheral portion 530f. The outermost peripheral portion 530d is located at the highest position (front side) for the cover 560 to be installed. The innermost peripheral portion 530f is located at the lowest position (rear side) for the opening plate 540 to be installed. The central portion 530e is located at an intermediate height for the six blades 550 to be installed. The central portion 530e further has a slight difference in height corresponding to the installation height of each blade 550.

[0030] Six long holes 535 are provided at equal intervals along the circumferential direction on the innermost circumference of the central portion 530e. Six shaft pins 537 protruding forward are provided at equal intervals along the circumferential direction near the radial center of the central portion 530e.

[0031] The movable ring 520 is annular centered on the optical axis O of the lens body 7 and includes a disk portion 520a having a through hole 520b and two magnet holders 523a and 523b extending rearward from the outer peripheral edge of the disk portion 520a. The movable ring 520 is disposed between the base 510 and the fixed ring 530.

[0032] The magnet holder 523a is accommodated in the accommodation space formed by the holder accommodation portion 515a and the accommodation recess 536a, and the magnet holder 523b is accommodated in the accommodation space formed by the holder accommodation portion 515b and the accommodation recess 536b. One magnet 521 is installed in each of the magnet holders 523a and 523b, and is fixed to the magnet holders 523a and 523b. The magnet 521 is arranged to face the coils 31a and 31b. The magnet 521 is magnetized in the radial direction, and its polarity is reversed at the center of the circumferential direction. The magnet holders 523a and 523b are formed to cover the inner circumferential side, the front side and the circumferential outer side of the magnet 521. The two outer side surfaces of the part of the magnet holder 523b on one side that covers the circumferential outer side of the magnet 521 are respectively opposed to the mechanical stops MSA and MSB. The two outer side surfaces are provided with abutment portions 526a and 526b, which abut against the mechanical stops MSA and MSB respectively when the movable ring 520 rotates.

[0033] Ball receiving parts 522a and 522b are formed on the rear surface of the disc part 520a of the movable ring 520. The ball receiving part 522a is provided corresponding to the ball receiving part 512a, and is a V-shaped groove recessed toward the front side. The ball receiving part 522b is provided corresponding to the ball receiving part 512b, and is an inverted L-shaped groove recessed toward the front side. Each group of the ball receiving part 512a and the ball receiving part 522a, and each group of the ball receiving part 512b and the ball receiving part 522b respectively clamps one ball 511. An annular magnetic metal not shown in the figure is embedded in the base 510, and the magnetic metal is located on the rear side of the two magnets 521. Thus, as Figure 7 as well as Figure 8 As shown, the movable ring 520 is attracted toward the base 510 side (rear side) and is rotatably supported via four balls 511 .

[0034] Six adjustment pins 525 protruding to the front are provided at equal intervals along the circumferential direction on the front surface of the disk portion 520a of the movable ring 520. The adjustment pins 525 pass through the long holes 535 and protrude to the front side of the disk portion 530c. When the coils 31a and 31b are energized, the movable ring 520 is driven to rotate around the optical axis O by the reaction of the electromagnetic force generated by the coils 31a and 31b.

[0035] When the movable ring 520 rotates clockwise as viewed from the front, the rotation of the movable ring 520 is stopped by the abutment of the abutment portion 526a of the magnet holder 523b with the mechanical stopper MSA. At this time, since the magnet 521 is pulled toward the magnetic sheet 517a, the movable ring 520 does not return to the opposite direction after the abutment and can maintain the abutted position. When the movable ring 520 rotates counterclockwise as viewed from the front, the rotation of the movable ring 520 is stopped by the abutment of the abutment portion 526b of the magnet holder 523b with the mechanical stopper MSB. Similarly, since the magnet 521 is pulled toward the magnetic sheet 517b, the movable ring 520 does not return to the opposite direction after the abutment and can maintain the abutted position.

[0036] The opening plate 540 is a disk-shaped plate member having a circular through hole 541 centered on the optical axis O, and is mounted and fixed to the innermost circumference 530f of the disk portion 530c of the fixing ring 530. In the present embodiment, the maximum diameter of the aperture AP through which light incident on the lens body 7 passes is limited to the diameter of the through hole 541 of the opening plate 540.

[0037] Six blades 550 are arranged at equal intervals in the circumferential direction at the central portion 530e of the disk portion 530c of the fixing ring 530, and a light-transmitting hole 555 for light incident from the subject to the lens body 7 is formed in the center thereof by combining the six blades. The light-transmitting hole 555 is substantially circular with the optical axis O of the lens body 7 as the center, and the smallest diameter of the aperture AP is the smallest diameter of the light-transmitting hole 555 formed by the six blades 550. The blade 550 has an axial hole 551 at one end. The axial pin 537 of the fixing ring 530 is inserted through the axial hole 551. The blade 550 is supported to be rotatable around the axial pin 537. The blade 550 is in the shape of an elongated acute-angled isosceles triangle arranged in a circumferential direction and bent toward the inner peripheral side as it approaches its elongated front end, and the axial hole 551 is provided at a corner portion on the outer peripheral side of the acute-angled isosceles triangle.

[0038] In addition, adjustment holes 552 extending from the first position P1 to the second position P2 are formed in the six blades 550. The adjustment pin 525 of the movable ring 520 protruding through the long hole 535 of the fixed ring 530 is inserted into the adjustment hole 552. As the movable ring 520 rotates, the adjustment pin 525 moves in the circumferential direction of the circle centered on the optical axis O, whereby the blade 550 rotates around the shaft pin 537, and the size of the light-transmitting hole 555 formed by the blade 550 changes. The first position P1 is a position on the blade 550 corresponding to the position where the adjustment pin 525 can move to the maximum in the direction in which the diameter of the light-transmitting hole 555 formed by the blade 550 increases. The second position P2 is a position on the blade 550 corresponding to the position where the adjustment pin 525 can move to the maximum in the direction in which the diameter of the light-transmitting hole 555 formed by the blade 550 decreases.

[0039] The inner edge of the blade 550 faces the optical axis O and is in an arc shape that curves from the tip of an acute isosceles triangle toward the base end and away from the optical axis O. Therefore, the light transmission hole 555 surrounded by the inner edge of the blade 550 is nearly circular.

[0040] The cover 560 is a disc-shaped member having a circular through hole 561 centered on the optical axis O. The cover 560 is fixed to the outermost peripheral portion 530 d of the disc portion 530 c of the fixing ring 530 . The blade 550 is disposed so as to be sandwiched between the cover 560 and the opening plate 540 .

[0041] use Fig. 9 , the relationship between the shape of the adjustment hole 552 in the blade 550 and the adjustment pin 525 is described. Fig. 9 As shown, the blade 550 has an adjustment hole 552 extending from the first position P1 to the second position P2. Fig. 9 The state where the adjustment pin 525 is located at the second position P2 is shown. That is, the diameter of the light-transmitting hole 555 is the smallest. The adjustment pin 525 of the movable ring 520 is inserted into the adjustment hole 552 and rotates to the right in the figure along the motion trajectory MT, which is a line along the circumference of a circle with a predetermined radius R centered on the optical axis O. The rotationally moving adjustment pin 525 applies force to the blade 550 toward the outside, so that the blade 550 rotates clockwise around the shaft pin 537. As a result, the diameter of the light-transmitting hole 555 increases. When the adjustment pin 525 is located at the first position P1, the opposite action is performed, thereby reducing the diameter of the light-transmitting hole 555.

[0042] The adjustment hole 552 has a first section S1 extending from the first position P1 and a second section S2 extending from the second position P2.

[0043] The first section S1 is a section in which the diameter of the light transmission hole 555 changes in accordance with the rotational movement of the adjustment pin 525 in the adjustment hole 552. When the adjustment pin 525 is located in the second section S2, the groove shape of the second section S2 overlaps with the circumferential motion track line MT of the adjustment pin 525. Therefore, in the second section S2, even if there is a rotational movement of the adjustment pin 525 in the adjustment hole 552, the diameter of the light transmission hole 555 does not change.

[0044] In this embodiment, the first section S1 has an intermediate section Sm that smoothly connects to the second section S2. Other sections in the first section S1 are continuously connected to the intermediate section Sm in a manner of drawing a smooth curve, and the intermediate section Sm is continuously connected to the second section S2 in a manner of drawing a smooth curve.

[0045] Moreover, when the contact portion 526a of the magnet holder 523b linked to the adjustment pin 525 in the adjustment hole 552 contacts the mechanical stopper MSA, the position of the adjustment pin 525 is located in the second interval S2. Therefore, when the adjustment pin 525 is located in the second interval S2, the diameter of the light-transmitting hole 555 does not change. Therefore, even if there is a deviation in the position where the contact portion 526a contacts the mechanical stopper MSA, the position of the adjustment pin 525 at this time has a deviation, and the deviation in the diameter of the light-transmitting hole 555 is also small. Therefore, the deviation in the minimum diameter of the aperture AP is also small. In addition, since the magnet 521 is attracted by the magnetic sheet 517a, there is no situation where the adjustment pin 525 moves backward after contacting the mechanical stopper MSA to increase the diameter of the light-transmitting hole 555. In addition, the position where the mechanical stopper MSB generates a limit to movement is located in the first interval S1.

[0046] like Fig.10 As shown in FIG. 1 , when the contact portion 526a of the magnet support 523b of the movable ring 520 contacts the mechanical stopper MSA, the adjustment pin 525 is located in the second section S2 of the adjustment hole 552. At this time, the diameter of the light-transmitting hole 555 surrounded by the blades 550 is the smallest, and the diameter of the aperture AP is also the smallest. Fig.11 As shown in FIG. 1 , when the contact portion 526b of the magnet holder 523b of the movable ring 520 contacts the mechanical stopper MSB, the adjustment pin 525 is located in the first section S1 of the adjustment hole 552. At this time, the diameter of the light-transmitting hole 555 surrounded by the blade 550 is at its maximum. However, since the diameter of the through hole 541 of the opening plate 540 is smaller than the diameter of the light-transmitting hole 555, the diameter of the through hole 541 can function as the maximum diameter of the aperture AP.

[0047] exist Fig.12 , the relationship between the rotation angle of the movable ring 520 in this embodiment and the diameter D2 of the light-transmitting hole 555 formed by the blade 550 is shown in comparison with the diameter D1 of the light-transmitting hole formed by the blade in the prior art.

[0048] In the prior art, the diameter of the light-transmitting hole changes in accordance with the rotation of the movable ring 520 near the abutting position with the mechanical stopper MSA. Therefore, it can be understood that the problem of the deviation of the minimum diameter of the light-transmitting hole is caused by the deviation of the abutting position with the mechanical stopper MSA.

[0049] In contrast, according to the present embodiment, the adjustment hole 552 is provided with a second section S2 (the section of -3.5 to -5.0 degrees in the figure) in which the diameter of the light-transmitting hole 555 does not change due to the rotation of the movable ring 520, and the contact position with the mechanical stopper MSA is set in the second section S2 (a position of -4.0 degrees in the present embodiment). Therefore, it is possible to suppress the deviation of the minimum diameter of the light-transmitting hole 555, that is, the minimum diameter of the aperture AP, caused by the deviation of the contact position with the mechanical stopper MSA.

[0050] In the first section S1 except the middle section Sm, there is no difference between the prior art and the present embodiment. The diameter D2 of the light-transmitting hole 555 becomes the same diameter as the through hole 541 of the opening plate 540 at +3.5 degrees, the first position P1 is set to +5.0 degrees, and the contact position with the mechanical stopper MSB is set to +4.0 degrees in between. Thus, the diameter of the through hole 541 of the opening plate 540 can be set to the maximum diameter of the aperture AP, and the maximum diameter of the aperture AP can be stabilized.

[0051] As described above, the blade drive device 5 of this embodiment has a first component, a second component and six blades 550. The first component corresponds to the movable ring 520 and has six adjustment pins 525 arranged on a circumference centered on the optical axis O of the lens body 7. The second component corresponds to the structure obtained by combining the base 510 and the fixed ring 530, and has an axis pin 537 arranged corresponding to the adjustment pin 525. The blades 550 respectively have an adjustment hole 552 and an axis hole 551. The adjustment hole 552 is movably engaged with the adjustment pin 525. The axis hole 551 is immovably engaged with the axis pin 537. The blades 550 can rotate around the axis pin 537, thereby forming a light-transmitting hole 555 for light incident on the lens body 7 to pass through. The structure obtained by combining the base 510 and the fixed ring 530 and the movable ring 520 are combined with each other, so that the movable ring 520 rotates relative to the structure obtained by combining the base 510 and the fixed ring 530 with the optical axis O of the lens body 7 as the center. In addition, the base 510 has mechanical stops MSA and MSB that stop the rotation of the movable ring 520 by the movable ring 520 abutting against the base 510. The adjustment hole 552 has a first section S1 extending from the first position P1 and a second section S2 extending from the second position P2. When the adjustment pin 525 is located in the second section S2, the adjustment hole 552 in the second section S2 extends along the motion trajectory MT of the adjustment pin 525, so that the diameter of the light-transmitting hole 555 is the smallest, and at this time, the movable ring 520 abuts against the base 510 at the mechanical stop MSA.

[0052] When the adjustment pin 525 is located in the second section S2, the adjustment hole 552 extends along the moving trajectory MT of the adjustment pin 525. Therefore, even if the adjustment pin 525 moves, the blade 550 does not rotate, so the diameter of the light-transmitting hole 555 does not change. If the movable ring 520 and the base 510 abut at the mechanical stopper MSA in the second section S2, the rotation state of the blade 550 does not change even if there is a deviation in the position of the mechanical stopper MSA. Therefore, even if there is a deviation in the position of the mechanical stopper MSA, the deviation in the minimum diameter of the light-transmitting hole 555 formed by the blade 550 can be suppressed. Therefore, according to the present embodiment, the deviation in the minimum diameter of the aperture AP caused by the deviation in the position of the mechanical stopper MSA can be reduced.

[0053] Furthermore, in the above-described embodiment, when the shape of the first section S1 can be continuously connected to the second section S2 so as to draw a smooth curve, the intermediate section Sm may not be provided.

[0054] In the above embodiment, the shaft pin 537 inserted into the shaft hole 551 is fixed and the adjustment pin 525 inserted into the adjustment hole 552 is rotated. However, the adjustment pin 525 inserted into the adjustment hole 552 may be fixed and the shaft pin 537 inserted into the shaft hole 551 may be rotated. [Description of Reference Numerals]

[0055] 1…camera device; 5…blade drive device; 6…image sensor; 7…lens body; 7a…carrier; 8…lens drive device; 9…smartphone; 10…housing; 11…front wall; 11a…through hole; 12…side wall; 20…peripheral portion; 21…FPC; 21a…terminal portion; 22a, 22b…extension portion; 23a, 23b…rising portion; 31a, 31b…coil; 32a, 32b…reinforcement plate; 40…frame; 41…front Side surface; 42…Inner side surface; 43…Outer side surface; 44…Notch portion; 44a…Slot; 45a, 45b…Coil bracket; 50…Blaine drive device body; 510…Base; 510a…Base abutment portion; 510b…Base hook portion; 511…Ball; 512a, 512b…Ball receiving portion; 515a, 515b…Bracket receiving portion; 517a, 517b…Magnetic sheet; 518a, 518b…Magnetic sheet bracket; 520…Moveable ring; 521...magnet; 522a, 522b...ball bearing portion; 523a, 523b...magnet holder; 525...adjusting pin; 526a, 526b...contact portion; 530...fixing ring; 530a...fixing ring contact portion; 530b...fixing ring hook portion; 530c...disc portion; 530d...outermost peripheral portion; 530e...central portion; 530f...innermost peripheral portion; 531...through hole; 535...long hole; 536a, 536b...accommodating recess ; 537…axle pin; 540…opening plate; 541…through hole; 550…blade; 551…axle hole; 552…adjustment hole; 555…light-transmitting hole; 560…cover; 561…through hole; AP…aperture; D1, D2…diameter of the light-transmitting hole; MSA, MSB…mechanical stopper; MT…motion track line; O…optical axis; P1…first position; P2…second position; R…radius; S1…first interval; S2…second interval; Sm…middle interval.

Claims

1. A blade driving device, characterized in that: have: a first component having a plurality of adjustment pins arranged on a circumference centered on the optical axis of the lens body; a second member having a shaft pin provided corresponding to the adjustment pin; as well as a plurality of blades, each of which has an adjustment hole in which the adjustment pin is movably engaged, and an axial hole in which the axial pin is immovably engaged, and the plurality of blades are capable of rotating around the axial pin, and are combined to form a light-transmitting hole in the center thereof for light incident on the lens body to pass through, The first component and the second component are configured to be combined with each other, whereby one of the components rotates relative to the other component about the optical axis of the lens body, and the other component has a mechanical stopper that stops the rotation of the one component by abutting the one component against the other component. The adjustment hole has a first section extending from a first position and a second section extending from a second position. When the adjustment pin is located in the second section, the adjustment hole in the second section extends along the moving trajectory of the adjustment pin, and the diameter of the light-transmitting hole is minimum. At this time, the first component and the second component abut against the mechanical stopper.

2. The blade driving device according to claim 1, characterized in that: The minimum diameter of the aperture that limits the light incident on the lens body to pass through is the minimum diameter of the light-transmitting hole formed by the blades.

3. The blade driving device according to claim 1, characterized in that: When the adjustment pin is located in the first section, the diameter of the light transmission hole changes due to the relative rotation of the first member and the second member. When the adjustment pin is located in the first position, the diameter of the light transmission hole formed by the blade is maximum.

4. The blade driving device according to claim 1, characterized in that: A third member having an opening having a diameter that is a maximum diameter of an aperture that limits passage of light incident on the lens body is provided.

5. The blade driving device according to claim 4, characterized in that: The maximum diameter of the light-transmitting hole formed by the blade is larger than the diameter of the opening of the third member, which is the maximum diameter of the aperture.

6. The blade driving device according to claim 1, characterized in that: The first section has an intermediate section that is smoothly connected to the second section.

7. The blade driving device according to claim 1, characterized in that: One of the first member and the second member has a magnet, and the other has a magnetic member, and when the first member and the second member abut against each other at the mechanical stopper, the magnet and the magnetic member face each other in the rotational direction.

8. The blade driving device according to claim 7, characterized in that: A fourth member including a coil facing the magnet is provided, and the magnet and the coil generate an electromagnetic force for relatively rotating the first member and the second member.

9. A camera device, characterized in that: A blade driving device according to claim 1 is provided.

10. An electronic device, characterized in that: A camera device according to claim 9.

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