WO2018062367A1

WO2018062367A1 - Blade driving device

Info

Publication number: WO2018062367A1
Application number: PCT/JP2017/035159
Authority: WO
Inventors: 孝司澤登; 謙三今井; 歩志子中川; 岩戸　省三; 渡部　伸昭
Original assignee: 日本電産コパル株式会社
Priority date: 2016-09-30
Filing date: 2017-09-28
Publication date: 2018-04-05
Also published as: CN109716228A; JPWO2018062367A1

Abstract

The present invention enables a blade member in a blade driving device to move with a consistently high resolution. The blade driving device is provided with: blade members; a driving member for driving blade members 6; and a coupling part for coupling the blade members and the driving member or a member to be driven which is driven by the driving member, or a coupling part for coupling the driving member and the member to be driven, the coupling part having an engaging part that is provided to one of the members to be coupled and that engages with a part to be engaged provided on the other member to be coupled; and the coupling part having an attaching member for movably attaching the engaging part to an edge contacting one side of the part to be engaged.

Description

Blade drive device

The present invention relates to a blade driving device for driving a blade.

The blade drive device drives one or a plurality of blade members that enter or retreat from the opening to change the state of the opening, such as an aperture, a shutter, a combined shutter, a filter, an imaging unit, etc. It is employed in various optical units or electronic devices having an imaging function. As a conventional blade driving device, an electromagnetic driving type using a magnet and a coil as a driving source is generally known.

The blade member provided in the blade driving device is generally a flat plate member having a thickness thinner than 1/10 mm (for example, about 3/100 to 6/100 mm). In order to slide such a blade member in the direction along the flat plate surface, the blade driving device is configured such that a part of the blade member is an electromagnetically driven driving member or a driven member driven by the driving member. An operating mechanism for coupling is provided.

Such a blade drive device is provided with a lever member that rotates around a central axis with an arm extending left and right as an operating mechanism that simultaneously slides a pair of blade members in opposite directions. The lever member is rotationally driven left and right within a set angle range, and both left and right arm ends are engaged with the ends of different blade members. For engagement between the arm end and the end of the blade member, an engagement pin provided at the arm end is inserted into an engagement hole (long hole) provided at the end of the blade member (Patent Document 1 below). reference).

JP 2014-123079 A

The engagement between the blade member and the driving member or the driven member (for example, the lever member described above) creates play (gap) between the engaging portion (engaging pin) and the engaged portion (engaging hole). By providing, smooth operation becomes possible. In particular, when converting the rotational movement of the lever member described above into a linear movement along the guide direction of the blade member, the engagement hole is a long hole extending in a direction intersecting the guide direction described above, and is long. In order to facilitate the movement of the engagement pin within the hole, a gap is provided between the short width of the long hole and the outer diameter of the engagement pin.

Even if the operation of the driving member or the driven member is controlled with high definition in order to move the blade member with high resolution, the blade driving device including such an operation mechanism has the above-described engaging portion and the engaged portion. The movement of the driving member or the driven member controlled with high definition is not accurately transmitted to the blade member due to the play (gap) provided between the blade member and the blade member.

As a result, the conventional blade driving device described above has a problem that it is difficult to control the optical adjustment amount such as the aperture amount adjusted by the movement of the blade member with high accuracy. In particular, the blade drive device mounted on a small electronic device such as a portable electronic device has a small aperture diameter through which the blade member enters. There was a problem that greatly affected the change in quantity.

The present invention has been proposed to deal with such problems. That is, it is possible to always move the blade member in the blade driving device with high resolution, and to thereby control the adjustment amount such as the diaphragm amount adjusted by the movement of the blade member with high accuracy. It is a subject of the invention.

In order to solve such a problem, a blade driving device according to the present invention has the following configuration.
A connecting portion that includes a blade member and a driving member that drives the blade member, and connects the blade member and the driving member or a driven member driven by the driving member, or the driving member and the driven member The connecting part that connects the members is engaged with the engaged part provided on the other connected to the engaging part provided on one connected side, and the engaging part is connected to the engaging part on the connecting part. A blade driving device, characterized in that a suction member that is movably sucked is provided at one contact edge of the engaged portion.

It is explanatory drawing which showed the connection part of the blade drive device. It is explanatory drawing which showed the other example of the connection part of a blade | wing drive device. It is a disassembled perspective view which shows the whole structure of the blade | wing drive device which concerns on embodiment of this invention. FIG. 4 is an explanatory diagram showing movement of a blade member of a blade driving device according to an example of an embodiment of the present invention ((a) is a plan view showing the blade member, and (b) is an SS cross-sectional view of (a)). FIG. 4 is an explanatory diagram showing movement of a blade member of a blade driving device according to an example of an embodiment of the present invention ((a) is a plan view showing the blade member, and (b) is an SS cross-sectional view of (a)). FIG. 6 is an explanatory view showing the movement of a blade member of a blade driving device according to another example of the embodiment of the present invention ((a) is a plan view showing the blade member, and (b) is a TT cross-sectional view of (a)). is there. FIG. 6 is an explanatory view showing the movement of a blade member of a blade driving device according to another example of the embodiment of the present invention ((a) is a plan view showing the blade member, and (b) is a TT cross-sectional view of (a)). is there. It is the disassembled perspective view which showed an example of the blade drive device which concerns on other embodiment of this invention. It is an internal top view which showed an example of the blade drive device which concerns on other embodiment of this invention, and has shown the state which removed the blade | wing container on the cover frame and the cover frame side. It is sectional drawing which showed the drive part of the blade drive device which concerns on other embodiment of this invention. It is explanatory drawing which showed operation | movement of the blade member in the blade drive device which concerns on other embodiment of this invention ((a) has shown the fully open state, (b) has shown the fully closed state.). It is the internal top view which showed the other example of the blade drive device which concerns on other embodiment of this invention. It is explanatory drawing which shows the imaging device provided with the blade | wing drive device which concerns on embodiment of this invention, and a portable information terminal.

The blade drive device according to the embodiment of the present invention includes a blade member and a drive member that drives the blade member. The blade member is connected to a driving member or connected to a driven member that is driven by the driving member.

The blade member here is a member that changes the state of the opening by entering or withdrawing from the opening, and is a thin plate member (for example, a thickness of 1/10 mm or less). ing. The driving member is a member that is driven by a driving force such as electromagnetic force or a member that is directly or indirectly connected to the member, and the driven member is driven by being connected to the driving member. It is a member. Therefore, when a certain driven member is connected to another member to drive the other member, the driven member becomes a driving member for the driven member.

The blade driving device according to the embodiment of the present invention is connected at any one of a connecting portion between the blade member and the driving member, a connecting portion between the blade member and the driven member, and a connecting portion between the driving member and the driven member. The engaging portion provided on one side is engaged with the engaged portion provided on the other side connected. And the adsorption | suction member which adsorb | sucks an engagement part to the one-side contact edge of a to-be-engaged part is provided in the connection part in such an engagement relationship.

Even if the blade drive device according to the embodiment of the present invention having such a feature has a play (gap) and the engagement portion is engaged with the engaged portion, the engagement portion is Since the state of being attracted to the one-side contact edge of the engaged portion is maintained, rattling between the engaging portion and the engaged portion can be suppressed. And since a drive member drives a blade member via such a connection part, the blade member in a blade drive device can always be moved with high resolution, and adjustments, such as a diaphragm amount adjusted by movement of a blade member, etc. The amount can be controlled with high accuracy. Moreover, since the engaging part is adsorb | sucked to the one side contact edge of the to-be-engaged part so that a movement is possible, it does not prevent that the both members connected operate | move smoothly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different drawings indicate parts having the same function, and repeated description in each drawing will be omitted as appropriate.

FIG. 1 shows one of the connecting portions J of the blade driving device. In the connecting portion J, the member A and the member B are connected, and the engaging portion (engaging protrusion) 10 provided on the member A is engaged with the engaged portion (engaging long hole) 11 provided on the member B. is doing. Here, a gap h serving as play is provided between the diameter of the engaging portion 10 and the shorter hole width of the engaged portion.

The member A and the member B of the connecting part J are the driving member or driven member described above, and the member B is a blade member, or the member A is a driving member, and the member B is a driven member. It is.

The connecting portion J is provided with an adsorbing member 12 that adsorbs the engaging portion 10 to the one-side contact edge 11A of the engaged portion 11 so as to be movable. The adsorbing member 12 shown in FIG. 1 is an adhesive member 12A that adheres around the engaging portion 10 and the one-side contact edge 11A. The adhesive member 12A adheres to both the engaging portion 10 and the periphery of the one-side abutting edge 11A in a state where the engaging portion 10 formed of the engaging protrusion is engaged in the engaged portion 11 that is an engaging long hole. And it has the suction | attraction force which draws the engaging part 10 to the one side contact edge 11A side. Further, the adhesive member 12A is required not to fix the positional relationship between the engaging portion 10 and the engaged portion 11 even in a cured state, and for example, a member that is cured in a gel shape that is elastically deformed is preferable. An example of the adhesive member 12A is an ultraviolet curable resin, and an ultraviolet curable silicone gel that is cured in a gel state by irradiation with ultraviolet rays can be used.

FIG. 2 shows another example of the connecting portion J of the blade driving device. In this example, the connection configuration of the member A and the member B in which the engaging portion 10 is engaged with the engaged portion 11 is the same as the example of FIG. In this example, magnetic attracting

members

12M and 12N are used as the attracting member 12. The magnetic attracting

members

12M and 12N are composed of a magnet provided on one side around the engaging part 10 and the one-side contact edge 11A and a magnetic body provided on the other side around the engaging part 10 and the one-side contact edge 11A. In the illustrated example, the magnetic adsorption member 12M provided in the engaging portion 10 can be a magnet, and the magnetic adsorption member 12N provided around the one-side contact edge 11A can be a magnetic body. Needless to say, in another embodiment, the magnetic attracting member 12M provided in the engaging portion 10 may be a magnetic body, and the magnetic attracting member 12N provided around the one-side contact edge 11A may be a magnet.

The magnetic attracting

members

12M and 12N pull the engaging portion 10 toward the one-side abutting edge 11A side in a state where the engaging portion 10 made of an engaging protrusion is engaged in the engaged portion 11 that is an engaging long hole. Has magnetic attraction. The magnetic attractive force between the magnetic attracting

members

12M and 12N is an attractive force that does not fix the positional relationship between the engaging portion 10 and the engaged portion 11, and even when the magnetic attractive force is acting. The engaging portion 10 can move in the engaged portion 11 which is an engagement long hole in a state where the engaging portion 10 is in contact with the one-side contact edge 11A.

1 and 2, when the member A moves to the one-side contact edge 11A side, the one-side contact edge 11A becomes a cam edge, and the member B moves in the arrow X direction that is the guide direction. To do. Further, when the member B moves to the side opposite to the one-side contact edge 11A, the member B is moved by the suction force of the suction member 12, and the member B is moved in the arrow -X direction which is the guide direction. In this way, in the connecting portion J, the engaging portion 10 is always in contact with the one-side contact edge 11A, and therefore there is a gap h between the engaging portion 10 and the engaged portion 11. However, the movement of the member B can be made to follow the movement of the member A without causing rattling.

Hereinafter, an example of a blade driving device including the above-described connecting portion will be described. In the following drawings, the arrow Z direction indicates the optical axis direction (the thickness direction of the blade driving device), the arrow X indicates the moving direction of the blade member, and the arrow Y direction indicates the direction orthogonal to the X and Y directions. Yes.

As shown in FIG. 3, the blade driving device 1 includes a frame including a base frame 2 and a cover frame 3, a driving member 4, a lever member 5 as a driven member, a blade member 6 (6X, 6Y), and a blade support. (Ground plate) 7 is provided. The base frame 2 and the cover frame 3 are provided with

coaxial openings

2A and 3A, respectively, and a blade support 7 having an opening 7A coaxial with the

openings

2A and 3A in a frame body composed of the base frame 2 and the cover frame 3; The drive member 4, the lever member 5, and the blade member 6 (6X, 6Y) are provided.

The drive member 4 is movably supported on the support surface 2B of the base frame 2, and drives the blade member 6 (6X, 6Y) by moving on the plane. A magnet 20 and a coil 21 which are drive sources are attached to the drive member 4 and the frame. In the example shown in FIG. 3, the magnet 20 is attached to the attachment portion 4 </ b> A of the drive member 4, the coil 21 is attached to the cover frame 3, and the coil 21 is energized via the wiring board (flexible board) 22. The drive member 4 reciprocates in the X direction shown in the figure.

The driving member 4 is movably supported by the base frame 2 via a bearing 23 supported by a support groove 2C provided on the support surface 2B. The base frame 2 is provided with a magnetic body 24 for holding the blade member 6 at an initial position and attracting the drive member 4 to the base frame 2 in the optical axis direction. In addition, a hall element (detection member) 30 that detects the movement of the drive member 4 is disposed on the wiring board 22 at a position corresponding to the magnet 20.

The blade member 6 (6X, 6Y) is connected to the driving member 4 via a lever member (driven member) 5. In the lever member 5, the central shaft support portion 5A is supported by the shaft 2P of the base frame 2, and the engagement portions (engagement protrusions) 5B at both ends of the arm pass through the opening 7B of the blade support body 7 so that the blade member 6X, The 6Y engaged portions (engagement long holes) 6B are engaged with each other. Further, one engaging portion 5B of the lever member 5 is engaged with the engaged portion 4B of the driving member 4 through the engaged portion 6B of the blade member 6Y. As a result, when the drive member 4 linearly reciprocates along the X direction with an electromagnetic driving force, the lever member 5 rotates around the shaft 2P, and the engaged portion with which the engaging portion 5B is engaged. Driving forces in opposite directions are transmitted to the

blade members

6X and 6Y via 6B.

The thin blade member 6 (6X, 6Y) slides on the support surface 7C of the blade support 7. The

blade members

6X and 6Y are provided with guide holes 6C extending in the X-axis direction, and guide protrusions 2D protruding from the support surface 2B of the base frame 2 are provided on the support surface 7C of the blade support 7. Through the holes 7D, the

blades

6X and 6Y are engaged with the guide holes 6C. As a result, the

blade members

6X and 6Y driven by the drive member 4 move in the X direction along the guide holes 6C.

The blade member 6 (6X, 6Y) is moved by the driving member 4 and enters the opening 7A of the blade support 7 and retreats from the opening 7A. In the illustrated example, the blade member 6 (6X, 6Y) has an opening 6A, and the overlapping degree of the opening 6A in the opening 7A can be changed by the movement of the

blade members

6X, 6Y in the illustrated X direction. Adjusted.

4 and 5 show the movement of the

blade members

6X and 6Y. As shown in FIG. 4, when the drive member 4 (not shown) is moved in the X direction and the lever member 5 as the driven member is rotated in the arrow direction, the

blade members

6X and 6Y are moved along the X direction. They move in the opposite directions and become fully open as shown. In this state, the overlapping area of the openings 6A of the

blade members

6X and 6Y is equal to or larger than the area of the opening 7A of the blade support 7.

On the other hand, as shown in FIG. 5, when the driving member 4 (not shown) is moved in the −X direction and the lever member 5 as the driven member is rotated in the arrow direction, the

blade members

6X and 6Y The overlapping area of the opening 6A becomes smaller than the area of the opening 7A of the blade support 7, and the aperture state is reached.

In the illustrated example, the connecting portion J described above is configured by the engaging portion 5B (10) of the lever member 5 and the engaged portion 6B (11) of the

blade members

6X and 6Y, and the engaging portion 5B is covered. It is adsorbed by the adhesive member 12A (adsorption member 12) on the one-side contact edge 11A side of the engaging portion 6B. When the lever member 5 rotates in the direction of the arrow in FIG. 4, the blade member 6Y is pushed by the engaging portion 5B of the lever member 5 and moves in the X direction, and the blade member 6X is connected to the engaging portion 5B. It moves in the −X direction by the suction force around the one-side contact edge 11A. On the contrary, when the lever member 5 rotates in the direction of the arrow in FIG. 5, the blade member 6X is pushed by the engaging portion 5B of the lever member 5 and moves in the X direction, and the blade member 6Y is engaged. It moves in the −X direction by the adsorption force between the joint portion 5B and the periphery of the one-side contact edge 11A.

6 and 7 show the movement of the

blade members

6X and 6Y as in FIGS. This example is the same as the example shown in FIGS. 5 and 6 except that the attracting member 12 is replaced with the magnetic attracting

members

12M and 12N. The magnetic attraction member 12M is a magnet embedded in the protrusion of the engaging portion 5B, and the magnetic attraction member 12N is mounted on the

blade members

6X and 6Y around the one-side contact edge 11A in the engaged portion 11. Magnetic material. The same movement as the example described with reference to FIGS. 4 and 5 can also be obtained by such an attractive force of the magnetic

attractive members

12M and 12N.

Since the blade driving device 1 having such a connecting portion J can prevent rattling in the engagement between the engaging portion 5B and the engaged portion 6B, the opening 6A of the

blade members

6X and 6Y can be prevented. It is possible to adjust the overlapping area continuously and with high definition. As a result, it is possible to realize aperture adjustment with high accuracy.

In the above embodiment, the adhesive member 12A and the magnetic attracting member 12N are arranged in the + X direction with respect to the engaging portion 10, but may be arranged in the −X direction or the like in other embodiments. Of the left and right connecting portions, one adhesive member 12A or magnetic adsorption member 12N may be arranged in the + X direction, and the other adhesive member 12A or magnetic adsorption member 12N may be arranged in the −X direction.

Further, the adsorption member 12 is disposed on the surface of the blade member 6, but may be disposed on the back side of the blade member 6 when there is a space on the back side in other embodiments. Moreover, one adsorption member 12 is arrange | positioned at the surface side among right and left connection parts, and the other adsorption member 12 may be arrange | positioned at the back side.

These modifications may be arbitrarily combined, and the combination can be easily conceived from the description, and detailed description thereof is omitted.

In yet another embodiment, the lever member 5 may be provided with a dedicated engagement portion (engagement protrusion) that engages with the drive member 4 without engaging with the blade member 6. In this case, an elastic member such as a wire or a leaf spring may be used to suppress backlash between the lever member 5 and the drive member 4. Since an example of the elastic member is described in detail in another application (eg, Japanese Patent Application No. 2016-151342) of the same applicant, detailed description thereof is omitted here.
Further, the blade driving device 1 according to another embodiment may be made to function as a shutter by closing the opening when the diaphragm is fully stopped.

Next, another embodiment of the present invention will be described with reference to FIGS.

8 and 9, the blade driving device C1 includes a base frame C2, a cover frame C3, blade members C4A and C4B, an interlocking member (lever member) C5, and blade accommodating bodies C6A and C6B. The attached drive magnets C7, C8, coil C9 and yoke C10 constitute an electromagnetic actuator (drive source).

The base frame C2 includes a shaft C20, and the shaft C20 is inserted into the bearing C50 of the interlocking member C5 so that the interlocking member C5 is pivotally supported by the base frame C2. Around the axis C20 in the base frame C2, a housing part C21 in which the pivoting range of the interlocking member C5 is allowed and the coil C9 and the yoke C10 are housed is provided.

The base frame C2 includes a recess C22 that accommodates a lens frame (not shown). The base frame C2 further includes a plurality of guide protrusions C23 and a plurality of support protrusions C24 that protrude in parallel with the axis C20.

The cover frame C3 includes a shaft hole C30 through which the shaft C20 of the base frame C2 is inserted. The cover frame C3 includes a hole C31 through which the guide protrusion C23 and the support protrusion C24 are inserted, and a recess C32 corresponding to the recess C22 of the base frame C2.

The blade members C4A and C4B are diaphragm blades, and the two blade members C4A and C4B are provided with diaphragm openings C40 and C41, respectively. The apertures C40 and C41 adjust the amount of light passing through the apertures C40 and C41 by adjusting the overlap. The blade members C4A and C4B are provided with a guide hole C42 through which the guide projection C23 of the base frame C2 is inserted, and the long hole-shaped guide hole C42 extends along the longitudinal direction (X direction in the drawing). The operation directions of the blade members C4A and C4B are limited. The blade members C4A and C4B are provided with engagement holes C43 and C44, and magnetic bodies C11 and C12 are attached in the vicinity of the engagement holes C43 and C44.

The interlocking member C5 is provided with arms extending left and right and rotates around the axis C20 to interlock the movements of the two blade members C4A and C4B, and is inserted into the engagement hole C43 of the blade member C4A. The engagement protrusion C51 is provided on one end side of the left and right arms, and the engagement protrusion C52 inserted into the engagement hole C44 of the blade member C4B is provided on the other end side of the left and right arms.

The interlocking member C5 is connected to the blade member C4A by inserting the engagement protrusion C51 into the engagement hole C43, and is connected to the blade member C4B by inserting the engagement protrusion C52 into the engagement hole C44. ing. Thus, by rotating the interlocking member C5 about the axis C20, the two blade members C4A and C4B are simultaneously slid in the opposite directions along the X direction shown in the drawing.

The blade accommodating bodies C6A and C6B form a thin blade chamber C60 for accommodating the blade members C4A and C4B between them. Each of the blade containers C6A and C6B includes a protrusion C61 that protrudes into the recess C22 of the base frame C2, and each of the protrusions C61 is provided with an opening C62. The center of the opening 62 coincides with the optical axis of the lens in the lens frame accommodated in the recess C22.

In the blade chamber C60 between the blade containers C6A and C6B, the blade members C4A and C4B are stored so that the opening C62 and the aperture openings C40 and C41 of the blade members C4A and C4B overlap. Further, the blade housings C6A, C6B and the cover frame C3 are provided with escape holes C13 for releasing the movement of the engaging projections C51, C52 of the interlocking member C5. A plurality of holes C63 are provided to face the holes C31.

FIG. 10 shows a driving unit of the blade driving device C1. The coil C9 disposed in the housing part C21 of the base frame C2 is mounted and fixed on the circuit board C14 using, for example, a flat coil obtained by printing a coil pattern on a resin material. Alternatively, a coil pattern can be directly printed on the circuit board C14 to form the coil C9. In this embodiment, the flat coil is mounted on the circuit board C14, but the form of the coil C9 may be other forms such as an air-core coil. Further, the coil C9 may be arranged at another position without being mounted on the circuit board C14.

The interlocking member C5 is pivotally supported so that the driving magnet C8 (C7) faces the coil 9. Here, the magnet C8 (C7) is also used for magnetically attracting the magnetic body C12 (C11) attached to the blade member C4B (C4A), and the magnetic detection element (hole) mounted on the circuit board C14. It is also used as a detection magnet for detecting the operating position of the interlocking member C5.

The blade drive device C1 operates by energizing the coil C9 to rotate the interlocking member C5 on which the driving magnets C7 and C8 are mounted about the axis C20, thereby causing the blade members C4A and C4B to be illustrated as X. Slide in opposite directions along the direction. When the interlocking member C5 is rotated clockwise as shown in the figure, as shown in FIG. 11A, the area where the opening C62 overlaps with the aperture openings C40 and C41 increases, and the amount of light passing through the opening C62 increases. To do. On the other hand, when the interlocking member C5 is rotated counterclockwise in the drawing, as shown in FIG. 11B, the area where the opening C62 and the aperture openings C40 and C41 overlap is reduced and passes through the opening C62. The amount of light decreases.

Such an interlocking member C5 has magnets C7 and C8 attached to the interlocking member C5 always attached to the blade members C4A and C4B, respectively, regardless of whether the interlocking member C5 rotates to the right or to the left. By magnetically attracting the magnetic bodies C11 and C12, the engagement protrusions S51 and S52 of the interlocking member C5 are held together on the inner edges of the engagement holes C43 and C44, respectively. Accordingly, the blade members C4A and C4B coupled to the interlocking member C5 can be moved with high resolution at all times with respect to the rotation of the interlocking member C5, and the amount of light passing through the opening C62 is high. It can be continuously adjusted with accuracy.

The magnets C7 and C8 attached to the interlocking member C5 can be attached at arbitrary positions. In the example shown in FIG. 12, magnets C7 and C8 are attached to the engaging projections C51 and C52 of the interlocking member C5, respectively. As described above, the magnets C7 and C8 attached to the engagement protrusions C51 and C52 can magnetically attract the magnetic bodies C11 and C12, and can be used for driving or for position detection.

In the embodiment described above, an example in which the blade members C4A and C4B are diaphragm blades has been described. However, in the blade driving device C1, the blade members C4A and C4B are shutter blades that shield light passing through the opening C62. Alternatively, an optical filter that selectively changes the wavelength or the like of the light passing through the opening C6 may be used. In the example described above, there are two blade members C4A and C4B, but there may be one or a plurality of three or more. In this case, the magnetic body is one or a plurality of blade members. Of each. When the number of blade members is one, the amount of aperture may be changed stepwise by a single aperture blade provided with an aperture different in size from the aperture C62.

FIG. 13 shows a portable information terminal 200 which is a portable electronic device equipped with the imaging device 100 including the blade driving device 1. The imaging apparatus 100 including the blade driving device 1 can adjust the optical adjustment amount such as the aperture amount with high precision by moving the

blade members

6X and 6Y without rattling, and thus can obtain a high-quality image. Can do. In addition, in the portable electronic device 200 such as a smart phone equipped with such an imaging device 100, the imaging device 100 is reduced in size so that the opening of the imaging device 100 has a small diameter. By adjusting the aperture amount with high definition, a high-quality image can be obtained, and the quality of an image that can be displayed or transmitted by the portable information terminal 200 can be improved.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and the design can be changed without departing from the scope of the present invention. Is included in the present invention. In addition, the above-described embodiments can be combined by utilizing each other's technology as long as there is no particular contradiction or problem in the purpose and configuration.

Claims

A blade member;
A drive member for driving the blade member,
A connecting portion that connects the blade member and the driving member or a driven member driven by the driving member, or a connecting portion that connects the driving member and the driven member is provided on one side to be connected. Engaged with the engaged portion provided on the other side to which the engaging portion is coupled,
The blade drive device according to claim 1, wherein the coupling portion is provided with an adsorption member that movably adsorbs the engagement portion to the one-side contact edge of the engaged portion.
2. The blade driving device according to claim 1, wherein the suction member is an adhesive member that adheres around the engaging portion and the one-side contact edge.
3. The blade driving device according to claim 2, wherein the adhesive member is an ultraviolet curable resin.
2. The blade driving device according to claim 1, wherein the attracting member is a magnetic attracting member that magnetically attracts the engaging portion to a one-side contact edge of the engaged portion.
The magnetic attraction member is composed of a magnet provided on one of the periphery of the engaging portion and the one-side contact edge and a magnetic body provided on the other of the periphery of the engaging portion and the one-side contact edge. The blade driving device according to claim 4.
A blade member, and a drive mechanism for electromagnetically driving the blade member,
The drive mechanism includes a connecting portion that connects the member having the engagement hole and the member having the engagement protrusion by inserting the engagement protrusion with play in the engagement hole,
A magnetic body is provided on one of the member having the engagement hole and the member having the engagement protrusion, and a magnet is provided on the other, and the magnet magnetically attracts the magnetic body, so that A blade driving device characterized in that the engaging protrusion is held together.
The blade driving device according to claim 6, wherein the magnet serves as a driving source of the driving mechanism.
The blade driving device according to claim 6, wherein the magnet is provided separately from a magnet serving as a driving source of the driving mechanism.
The blade driving device according to any one of claims 6 to 8, wherein the magnet is provided on the engaging protrusion.
The blade driving device according to any one of claims 6 to 9, wherein the magnetic body is provided in each of a plurality of blade members.
11. The blade driving device according to claim 6, wherein the magnet is provided on an interlocking member that interlocks the plurality of blade members.
The blade driving device according to any one of claims 6 to 11, wherein the magnet is a detection magnet for magnetically detecting the position of the blade member.
The blade drive device according to any one of claims 6 to 12, wherein the electromagnetic actuator of the drive mechanism includes a moving drive magnet and a fixed coil.
The blade driving device according to claim 13, wherein the coil is a flat coil on which a pattern is printed.
15. The blade driving device according to claim 1, wherein the blade member is a diaphragm blade that variably adjusts the amount of light.
The blade driving device according to any one of claims 1 to 14, wherein the blade member is a shutter blade that shields light.
The blade driving device according to any one of claims 1 to 14, wherein the blade member is an optical filter.
An image pickup apparatus comprising the blade driving device according to any one of claims 1 to 18.
A portable information terminal comprising the blade driving device according to any one of claims 1 to 18.