JP2022098197A - Blade driving device, imaging apparatus, and electronic equipment - Google Patents

Abstract

To provide a blade driving device enabling reduction of the number of the components thereof and enabling reduction of the size of the blade driving device.SOLUTION: A blade driving device 1 comprises: a base member 10 having a support shaft 63 extending forward; a cover member 30 in which an opening 31 is formed; a blade member 40 arranged inside a blade chamber which is formed between the base member 10 and the cover member 30; and an actuator moving the blade member 40 between a closed position where openings 11, 31 are closed and an open position where the openings are opened. The cover member 30 is provided in such a way as to cover the front side of the base member 10. The actuator includes a lever member 52 coupled to the blade member 40. The lever member 52 includes a lever body 53 rotatable around the support shaft 63 of the base member 10 as a center, a coupling portion 54 coupling the lever body 53 and the blade member 40 together, and projections 55, 56 projecting forward from the lever body 53 beyond the blade member 40 and facing the cover member 30.SELECTED DRAWING: Figure 2

Description

The present invention relates to a blade drive device, an image pickup device, and an electronic device, and more particularly to a blade drive device capable of opening and closing an opening by a blade member.

In recent years, cameras have been incorporated into various electronic devices such as smartphones, tablet computers, laptop computers, security cameras, smart speakers, and drones. A camera incorporated in such an electronic device is generally equipped with a blade driving device (for example, a shutter, a barrier, an aperture, etc.) for driving a blade member for opening / closing or adjusting a lens aperture (for example, a shutter, a barrier, an aperture, etc.). , Patent Document 1). Recently, as the miniaturization of electronic devices has progressed, it has been required to reduce the size of such a blade drive device in a camera as much as possible and to reduce the number of parts as much as possible.

Japanese Unexamined Patent Publication No. 2006-189513

The present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a blade drive device, an image pickup device, and an electronic device capable of reducing the number of parts and reducing the size.

According to the first aspect of the present invention, there is provided a blade drive device capable of reducing the number of parts and reducing the size. This blade drive device is a blade member arranged inside a base member having a support shaft extending forward, a cover member having an opening formed therein, and a blade chamber formed between the base member and the cover member. And an actuator for moving the blade member between the closed position for closing the opening and the open position for opening the opening. The cover member is provided so as to cover the front side of the base member. The actuator includes a lever member connected to the blade member. The lever member of the actuator includes a lever body that can rotate around the support shaft of the base member, a connecting portion that connects the lever body and the blade member, and the blade member forward from the lever body. Includes at least one protrusion that projects beyond and faces the cover member.

According to the second aspect of the present invention, there is provided an image pickup apparatus capable of reducing the number of parts and downsizing. This image pickup device includes the above-mentioned blade drive device and an image pickup element that receives light incident on the above-mentioned opening of the cover member of the above-mentioned blade drive device.

According to the third aspect of the present invention, there is provided an electronic device capable of reducing the number of parts and downsizing. As this electronic device, an electronic device provided with the above-mentioned imaging device is provided.

FIG. 1 is a perspective view showing a blade driving device according to an embodiment of the present invention. FIG. 2 is a front exploded perspective view of the blade drive device of FIG. FIG. 3 is a rear exploded perspective view of the blade driving device of FIG. FIG. 4A is a schematic view illustrating the operation of the blade member and the lever unit in the blade drive device of FIG. 1, and shows a state in which the blade member is located at an open position. FIG. 4B is a schematic view illustrating the operation of the blade member and the lever unit in the blade drive device of FIG. 1, and shows a state in which the blade member is located at a closed position. FIG. 5 is a vertical cross-sectional view of the blade driving device of FIG. FIG. 6 is a vertical sectional view of the blade driving device according to another embodiment of the present invention. FIG. 7 is a rear perspective view showing an example in which a conventional substrate retainer is applied to the blade drive device of FIG. 1. FIG. 8 is a rear view of the blade drive device according to another embodiment of the present invention. FIG. 9 is a schematic diagram illustrating the operation of the blade member and the lever unit in another embodiment of the present invention. FIG. 10 is a perspective view showing a smartphone as an example of an electronic device incorporating the blade driving device according to the present invention.

Hereinafter, embodiments of the blade drive device according to the present invention will be described in detail with reference to FIGS. 1 to 10. In FIGS. 1 to 10, the same or corresponding components are designated by the same reference numerals, and duplicate description will be omitted. Further, in FIGS. 1 to 10, the scale and dimensions of each component may be exaggerated or some components may be omitted. In the following description, unless otherwise noted, terms such as "first" and "second" are only used to distinguish the components from each other and represent a particular order or order. It's not a thing.

FIG. 1 is a perspective view showing a blade driving device 1 according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the blade driving device 1. As shown in FIGS. 1 and 2, the blade drive device 1 includes a substantially rectangular plate-shaped base member 10, a coil unit 20 attached to the rear of the base member 10, and a cover member 30 that covers the front surface side of the base member 10. A blade member 40 arranged inside a blade chamber formed between the cover member 30 and the base member 10, and a lever unit 50 for driving the blade member 40 are included. In this embodiment, for convenience, the + Z direction in FIG. 1 is "up" or "upward", the −Z direction is “down” or “downward”, and the + Y direction is “front” or “forward”, −Y. The direction shall be "rear" or "rear".

The base member 10 is formed with a circular opening 11 penetrating in the Y direction. The cover member 30 is a member having a substantially rectangular thin plate shape, and the cover member 30 is also formed with a circular opening 31 having substantially the same diameter as the opening 11 of the base member 10. The opening 11 of the base member 10 and the opening 31 of the cover member 30 are located coaxially with each other. When the blade driving device 1 is incorporated in the image pickup device, the light passing through the opening 31 of the cover member 30 and the opening 11 of the base member 10 is configured to be incident on the image pickup element of the image pickup device. For example, the blade member 40 is made of a material that does not transmit light (visible light, infrared light, or the like) imaged by an image pickup device.

The base member 10 has a base surface 12 that defines a blade chamber between the cover member 30 and edges 13A and 13B extending in the + Y direction from the upper and lower portions of the base surface 12, respectively, and projects from the base surface 12 in the + Y direction. It is equipped with columnar guide posts 14 to 16. A recess 61 recessed in the −Y direction is formed on the base surface 12, and a recess 62 recessed in the −Y direction further than the recess 61 is formed on the upper portion of the recess 61. The base member 10 has a support shaft 63 extending in the + Y direction from the bottom surface of the recess 62.

As shown in FIG. 2, the lever unit 50 includes a cylindrical rotor magnet 51 rotatably attached to a support shaft 63 of the base member 10, and a lever member 52 attached to the rotor magnet 51. The rotor magnet 51 is composed of magnets having different magnetic poles along the circumferential direction, and is housed in the recess 62 of the base member 10.

The lever member 52 is from a lever body 53 that can rotate around a support shaft 63 of the base member 10 together with a rotor magnet 51, a columnar connecting portion 54 extending in the + Y direction from the end of the lever body 53, and a lever body 53. It has protrusions 55 and 56 protruding in the + Y direction (forward). The protruding portion 55 extends around the support shaft 63 of the base member 10 with a constant length along the circumferential direction, and the protruding portion 56 is formed in the vicinity of the central portion of the lever main body 53.

The coil unit 20 includes a yoke 21 made of a magnetic material, a coil base 22, and a coil 23 wound around the yoke 21 and the coil base 22. The yoke 21 in the present embodiment is thin and flat in the Y direction, and has a substantially U-shape including two arm portions 24A and 24B. The coil 23 is wound around one of the arm portions 24A and is electrically connected to the wiring in the flexible printed substrate 71 extending along the peripheral edge portion of the base member 10. In the present embodiment, the coil unit 20 and the lever unit 50 constitute an actuator that moves the blade member 40 in the X direction.

FIG. 3 is a rear exploded perspective view of the coil unit 20 removed from the base member 10. As shown in FIG. 3, a recess 25 for accommodating the coil unit 20 is formed on the rear surface side of the base member 10. As described above, in the present embodiment, among the components of the actuator that moves the blade member 40, the coil unit 20 including the yoke 21, the coil base 22, and the coil 23 is arranged behind the base member 10. The lever unit 50 including the rotor magnet 51 and the lever member 52 is arranged in front of the base member 10. At this time, the rotor magnet 51 housed in the recess 62 of the base member 10 is located between the arm portions 24A and 24B of the yoke 21 arranged behind the base member 10.

Guide grooves 41 and 42 extending in the X direction are formed in the upper part and the lower part of the blade member 40, respectively. In the illustrated example, the lower guide groove 42 is longer than the upper guide groove 41. .. The guide post 14 of the base member 10 is housed in the guide groove 41, and the guide posts 15 and 16 of the base member 10 are housed in the guide groove 42. The width of the guide groove 41 of the blade member 40 along the Z direction is slightly larger than the outer diameter of the guide post 14 of the base member 10, and the width of the guide groove 42 of the blade member 40 along the Z direction is , The diameter is slightly larger than the outer diameters of the guide posts 15 and 16 of the base member 10. As a result, the guide posts 14 to 16 of the base member 10 engage with the guide grooves 41 and 42 of the blade member 40 in the Z direction, and the blade member 40 engages with the guide grooves 41 and 42 in the X direction. You can move it.

Further, the blade member 40 is formed with an elongated hole 43 extending in the Z direction. A connecting portion 54 of the lever member 52 is housed in the elongated hole 43, and the lever main body 53 of the lever member 52 is connected to the blade member 40 by the connecting portion 54. The width of the elongated hole 43 of the blade member 40 along the X direction is slightly larger than the outer diameter of the connecting portion 54 of the lever member 52. As a result, the connecting portion 54 of the lever member 52 engages with the elongated hole 43 of the blade member 40 in the X direction. Therefore, when the lever member 52 rotates about the support shaft 63 of the base member 10, the connecting portion 54 of the lever member 52 moves in the elongated hole 43 of the blade member 40 in the Z direction and the elongated hole 43 in the X direction. The blade member 40 is moved in the X direction by engaging with.

As shown in FIGS. 1 and 2, the upper surface of the upper edge portion 13A of the base member 10 is formed with two recesses 18A slightly recessed in the −Z direction, and each recess 18A projects in the + Z direction. The upper engaging portion 19A is formed. Similarly, as shown in FIG. 3, the lower surface of the lower edge portion 13B of the base member 10 is formed with two recesses 18B slightly recessed in the + Z direction, and each recess 18B projects in the −Z direction. The lower engaging portion 19B is formed.

As shown in FIGS. 1 to 3, the cover member 30 has two upper hook portions 32A extending in an annular shape in the −Y direction from the upper edge portion and two lower hook portions extending in an annular shape in the −Y direction from the lower edge portion. It has a portion 32B. The upper hook portion 32A corresponds to the upper engaging portion 19A of the base member 10, and the lower hook portion 32B corresponds to the lower engaging portion 19B of the base member 10. The upper hook portion 32A and the lower hook portion 32B can be elastically deformed in the Z direction, respectively. A space for accommodating the upper engaging portion 19A of the base member 10 is formed inside the annular upper hook portion 32A, and the lower engaging portion of the base member 10 is formed inside the annular lower hook portion 32B. A space for accommodating the portion 19B is formed. As shown in FIG. 3, the end portion of the lower hook portion 32B in the −Y direction extends in the −Y direction to form the extension portion 39. In a state where the lower hook portion 32B is engaged with the lower engaging portion 19B of the base member 10, the extension portion 39 is located outside the flexible printed substrate 71.

With such a configuration, the hook portions 32A and 32B of the cover member 30 are elastically deformed in the Z direction to overcome the engaging portions 19A and 19B of the base member 10, so that the engaging portions 19A and 19B of the base member 10 are formed. The cover member 30 is engaged with the hook portions 32A and 32B of the cover member 30, respectively, and the cover member 30 is fixed to the base member 10 (see FIGS. 1 and 3).

The guide post 14 of the base member 10 extending in the + Y direction through the guide groove 41 of the blade member 40 is housed in the circular window 34 formed in the cover member 30. Similarly, the guide posts 14 and 16 of the base member 10 extending in the + Y direction through the guide groove 42 of the blade member 40 are housed in the circular windows 35 and 36 formed in the cover member 30, respectively. Further, the connecting portion 54 of the lever member 52 extending in the + Y direction through the elongated hole 43 of the blade member 40 is housed inside the arc window 37 formed in the cover member 30.

4A and 4B are schematic views illustrating the operation of the blade member 40 and the lever unit 50. In the actuator described above, when a current is applied to the coil 23 of the coil unit 20 through the wiring in the flexible printed substrate 71, the arm portions 24A and 24B of the yoke 21 are magnetized (magnetized) to the opposite magnetic poles, and the arm portions 24A, The rotor magnet 51 of the lever unit 50 is rotated by the attraction of the magnetic force of 24B.

For example, when a current is applied to the coil 23 of the coil unit 20 in one direction, the magnetic poles of the rotor magnet 51 are attracted to the magnetized (magnetized) arm portions 24A and 24B of the yoke 21 as shown in FIG. 4A, and the rotor is attracted to the rotor. The magnet 51 rotates counterclockwise. As a result, the lever member 52 rotates counterclockwise about the support shaft 63 of the base member 10. When the lever member 52 rotates counterclockwise about the support shaft 63, the blade member 40 moves in the + X direction due to the engagement between the connecting portion 54 of the lever member 52 and the elongated hole 43 of the blade member 40. Therefore, the blade member 40 moves to a position that does not overlap the opening 11 of the base member 10 (and the opening 31 of the cover member 30), and opens the opening 11 of the base member 10 (and the opening 31 of the cover member 30). The position of the blade member 40 at this time is referred to as an "open position".

Further, when a current in the direction opposite to that in FIG. 4A is applied to the coil 23 of the coil unit 20, the arm portions 24A and 24B of the yoke 21 are magnetized (magnetized) to the magnetic poles opposite to those in FIG. 4A. As shown in FIG. 4B, the magnetic poles of the rotor magnet 51 are attracted to these arm portions 24A and 24B, and the rotor magnet 51 rotates clockwise. As a result, the lever member 52 rotates clockwise around the support shaft 63 of the base member 10. When the lever member 52 rotates clockwise around the support shaft 63, the blade member 40 moves in the −X direction due to the engagement between the connecting portion 54 of the lever member 52 and the elongated hole 43 of the blade member 40. Therefore, the blade member 40 moves to a position where the opening 11 of the base member 10 (and the opening 31 of the cover member 30) is closed. The position of the blade member 40 at this time is referred to as a "closed position".

For example, when the blade driving device 1 is incorporated in the image pickup device as a shutter, when the blade member 40 is located at the open position shown in FIG. 4A, the light from the outside of the blade driving device 1 covers the blade driving device 1. Since it is incident on the image pickup element of the image pickup device through the opening 31 of the member 30 and the opening 11 of the base member 10, it is possible to take a picture by the image pickup device. On the other hand, when the blade member 40 is located at the closed position shown in FIG. 4B, the light passing through the opening 31 of the cover member 30 from the outside of the blade drive device 1 is blocked by the blade member 40.

FIG. 5 is a vertical cross-sectional view of the blade driving device 1. In the conventional blade drive device, the lever unit 50 is placed in the recesses 61 and 62 of the base member 10 so that the lever unit 50 does not pop out from the recesses 61 and 62 of the base member 10 when an impact or vibration is applied. Since a holding plate (partition plate) for holding is provided between the blade member 40 and the lever unit 50, the thickness of the blade driving device in the Y direction is increased by the thickness of the holding plate. On the other hand, the blade drive device 1 of the present embodiment can hold the lever unit 50 in the recesses 61 and 62 of the base member 10 without the need for such a holding plate, so that the blade drive device 1 can be driven by blades. The thickness of the device 1 in the Y direction can be reduced. That is, in the present embodiment, as shown in FIG. 5, the projecting portions 55 and 56 of the lever member 52 project from the lever body 53 in the + Y direction beyond the blade member 40 toward the cover member 30 side, and the lever member 52. The protruding portions 55 and 56 face the cover member 30. Therefore, even if an impact or vibration is applied to the blade driving device 1, the protruding portions 55 and 56 of the lever member 52 come into contact with the cover member 30 and the movement of the lever member 52 in the Y direction is suppressed. Therefore, the lever unit 50 can be held in the recesses 61 and 62 of the base member 10 without a member such as a holding plate.

As described above, according to the present embodiment, the lever unit 50 can be held in the recesses 61 and 62 of the base member 10 without the need for the holding plate conventionally required. Therefore, the number of parts of the blade driving device 1 can be reduced, and the thickness of the blade driving device 1 can be reduced by the amount of the holding plate.

The lever member 52 of the present embodiment has two protrusions 55 and 56, but the number of protrusions may be one or three or more. In this case, like the protrusion 55 of the present embodiment, from the viewpoint of effectively suppressing the movement of the lever unit 50 in the Y direction, a portion close to the support shaft 63 of the base member 10 which is the rotation center of the lever unit 50. That is, it is preferable to form a protrusion along the circumferential direction around the support shaft 63 of the base member 10.

When the lever member 52 includes the protrusions 55 and 56 as in the present embodiment, the protrusions 55 and 56 also move with the rotation of the lever member 52, so that the protrusions 55 and 56 are the blade members 40. May collide with. Therefore, a notch is formed in a part of the blade member 40, and relief portions 45, 46 (see FIGS. 4A and 4B) for avoiding collision with the protrusions 55 and 56 are formed in the blade member 40. Is preferable.

As described above, in the present embodiment, among the components of the actuator that moves the blade member 40, the coil unit 20 is arranged behind the base member 10, and the lever unit 50 is arranged in front of the base member 10. The base member 10 is located between the coil unit 20 and the lever unit 50. Therefore, in order to further reduce the thickness of the blade drive device 1 in the Y direction, for example, as shown in FIG. 6, both the lever unit 50 and the coil unit 20 may be arranged in front of the base member 10. If the structure shown in FIG. 5 is adopted as opposed to the structure shown in FIG. 6, the yoke 21 of the coil unit 20 is held between the base member 10 and the coil base 22, so that the stability and design of the coil unit 20 are achieved. The degree of freedom can be increased.

Returning to FIG. 3, in the present embodiment, the flexible printed substrate 71 including the wiring electrically connected to the coil 23 of the coil unit 20 extends in the −Z direction along the side surface of the base member 10, and further below. It extends in the -Z direction along the edge. It is conceivable that such a flexible printed substrate 71 may loosen for some reason and come out of the blade driving device 1. In order to prevent the flexible printed circuit board 71 from coming out of the blade drive device 1 in this way, for example, as shown in FIG. 7, a substrate holder 571 for holding the flexible printed circuit board 71 is provided as a base member 10. It is conceivable to form the flexible printed circuit board 71 and press the flexible printed circuit board 71 from the outside of the flexible printed circuit board 71. However, if an attempt is made to form the substrate retainer 571 on the base member 10 without changing the size of the blade drive device 1, the dimensions of other members (for example, the inner wall 110A of the base member 10 shown in FIG. 7) are increased by the amount of the substrate retainer 571. It must be made small, which makes it difficult to design the blade drive device 1. Further, it is conceivable to fix the flexible printed circuit board 71 with double-sided tape or an adhesive instead of the substrate retainer 571, but the material cost such as the double-sided tape or the adhesive increases and the wages increase due to the addition of the adhesive process. ..

In the present embodiment, as shown in FIG. 3, when the lower hook portion 32B of the cover member 30 is engaged with the lower engaging portion 19B of the base member 10, the extension portion 39 of the lower hook portion 32B is engaged. Is located on the outside of the flexible printed circuit board 71, so that the flexible printed circuit board 71 can be held by the extension portion 39 of the lower hook portion 32B, and the flexible printed circuit board 71 goes out of the blade drive device 1. Can be prevented. Since the extension portion 39 of the lower hook portion 32B can be made thinner than the substrate retainer 571 as shown in FIG. 7, it does not hinder the miniaturization of the blade drive device 1.

In particular, as shown in FIG. 8, it is more effective to provide such an extension 39 in a blade driving device 201 or the like provided with two actuators. The blade drive device 201 shown in FIG. 8 includes two coil units 20A and 20B, two lever units (not shown), and a flexible printed circuit board 271 connected to these two coil units 20A and 20B. There is. The coil 23 of the coil unit 20A is electrically connected to the circuit in the flexible printed board 271 by the solder 270A, and the coil 23 of the coil unit 20B is electrically connected to the circuit in the flexible printed board 271 by the solder 270B. In such a configuration, since the flexible printed substrate 271 needs to be connected so as to straddle between the two coil units 20A and 20B, it is inevitably arranged along the peripheral edge portion of the base member 10. Will be. Therefore, in order to hold the flexible printed circuit board 271 without increasing the size of the blade driving device 201, it is effective to adopt the configuration of the extension portion 39 described above.

In the above-described embodiment, an example in which the blade member 40 is slid in one direction by an actuator has been described, but the form of the actuator is not limited to this. For example, the blade member 340 may be rotated around the support shaft 342 by using an actuator provided with the lever unit 350 as shown in FIG.

The lever unit 350 includes a cylindrical rotor magnet 351 rotatably attached to a support shaft 63 of the base member 10 and a lever member 352 attached to the rotor magnet 351. The lever member 352 is a rotor magnet. A lever body 353 that can rotate around the support shaft 63 of the base member 10 together with 351 and a cylindrical connecting portion 354 extending in the + Y direction from the end of the lever body 353, and a + Y direction (forward) around the support shaft 63. It has a protruding portion 355 that protrudes into the. The connecting portion 354 of the lever member 352 is inserted into the elongated hole 343 formed in the blade member 340 and is engaged with the elongated hole 343. According to such a configuration, when the lever member 352 rotates about the support shaft 63 of the base member 10 with the rotation of the rotor magnet 351, the connecting portion 354 of the lever member 352 and the elongated hole 343 of the blade member 340 By engagement, the blade member 340 rotates about the support shaft 342 and moves between the closed position that closes the opening 11 (and the opening 31 of the cover member 30) of the base member 10 and the open position that opens the opening 11. ..

FIG. 10 shows a smartphone 400 as an example of an electronic device incorporating the blade drive devices 1,201 described in the above-described embodiment. An image pickup device 401 including the above-mentioned blade drive device 1,201 is incorporated in the smartphone 400, and a window 403 for allowing light to be incident on the lens of the image pickup device 401 is formed on the back surface of the smartphone 400. In this case, for example, the blade drive devices 1,201 described above can be used as a shutter, a barrier, and an aperture for the image pickup device 401. As the blade member 40, a filter blade, a diaphragm blade, or the like is adopted in addition to the shutter blade according to the application of the blade drive device 1.

The blade drive device according to the present invention is not limited to such a smartphone 400, but can be applied to various electronic devices such as tablet computers, laptop computers, smart speakers, drones, surveillance cameras, and in-vehicle cameras.

Further, the above-mentioned blade drive devices 1,201 can also be used as a shutter (sometimes referred to as a cover or a lid) for blocking shooting by the camera when the user does not intend. In this case, the blade members 40 and 340 do not need to block all the light incident on the image pickup device of the image pickup device through the openings 11 and 31, but the blade members so as to block a part of the light incident on the image pickup device. Members 40 and 340 may be configured. For example, the blade members 40 and 340 may be made of a material having a low transmittance for the light (visible light, infrared light, etc.) photographed by the image sensor, or the blade members 40 and 340 may be colored, uneven, or perforated to form a pattern (mesh-like). , A grid pattern, a concentric pattern, etc.) may be applied to block a part of the light incident on the image sensor. In this case, a part of the image or video acquired by the image sensor becomes unclear or invisible, so that it is possible to prevent the image or video acquired by the user from being acquired. Further, the blade members 40 and 340 may be configured so as to apply a predetermined optical effect (mosaic filter, scattering, diffused reflection, etc.) to the light incident on the image sensor through the openings 11 and 31. Even in this case, since a part of the image or video acquired by the image sensor becomes unclear or invisible, it is possible to prevent the image or video acquired by the user from being acquired.

Although the preferred embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment and may be implemented in various different forms within the scope of the technical idea.

As described above, according to the first aspect of the present invention, there is provided a blade drive device capable of reducing the number of parts and reducing the size. This blade drive device is a blade member arranged inside a base member having a support shaft extending forward, a cover member having an opening formed therein, and a blade chamber formed between the base member and the cover member. And an actuator for moving the blade member between the closed position for closing the opening and the open position for opening the opening. The cover member is provided so as to cover the front side of the base member. The actuator includes a lever member connected to the blade member. The lever member of the actuator includes a lever body that can rotate around the support shaft of the base member, a connecting portion that connects the lever body and the blade member, and the blade member forward from the lever body. Includes at least one protrusion that projects beyond and faces the cover member.

According to such a configuration, even if an impact or vibration is applied to the blade drive device, the protruding portion of the lever member abuts on the cover member and the movement of the lever member in the front-rear direction is suppressed, so that the lever body and the cover member are suppressed. The lever member can be held between the base member and the cover member without providing a member such as a holding plate between the lever member and the lever member. This eliminates the need for a holding plate that was conventionally required to hold the lever member between the base member and the cover member, so that the number of parts of the blade drive device can be reduced and the number of parts of the holding plate can be reduced. Only the thickness of the blade drive can be reduced.

From the viewpoint of effectively suppressing the movement of the lever member in the front-rear direction, it is preferable that the at least one protrusion of the lever member is formed around the support shaft of the base member along the circumferential direction. ..

It is preferable that the blade member is formed with a relief portion for avoiding collision with the at least one protruding portion of the lever member.

The actuator is rotatably attached to the support shaft of the base member, a rotor magnet attached to the lever member, a yoke arranged at a position where a magnetic action is applied to the rotor magnet, and one of the yokes. It may further include a coil wound around the portion. By using such an actuator, the size of the blade opening / closing device can be made compact.

The lever member and the rotor magnet may be arranged in front of the base member, and the coil and the yoke may be arranged behind the base member. By arranging the coil and the yoke on the side opposite to the side on which the lever member and the rotor magnet are arranged in this way, the yoke can be held between the base portion and the member such as the coil base. , The stability of the blade drive device and the degree of freedom in design can be increased.

The lever member, the rotor magnet, the coil, and the yoke may be arranged in front of the base member. By arranging the lever member, the rotor magnet, the coil, and the yoke on one side of the base member in this way, the thickness of the blade drive device in the front-rear direction can be further reduced.

The blade drive may further include a flexible printed substrate extending along the peripheral edge of the base member. The flexible printed board may be provided with wiring electrically connected to the actuator. In this case, the base member includes a plurality of engaging portions formed on the outer peripheral surface, and the cover member may include a hook portion capable of engaging with the plurality of engaging portions of the base member. good. The hook portion may have an extension portion located outside the flexible printed circuit board when engaged with the plurality of engaging portions of the base member. According to such a configuration, when the hook portion of the cover member is engaged with the engaging portion of the base member, the extension portion of the hook portion is located on the outside of the flexible printed circuit board, so that the extension portion of the hook portion is extended. The flexible printed circuit board can be held by the portion, and the flexible printed circuit board can be prevented from coming out of the blade drive device in a compact configuration.

According to the second aspect of the present invention, there is provided an image pickup apparatus capable of reducing the number of parts and downsizing. This image pickup device includes the above-mentioned blade drive device and an image pickup element that receives light incident on the above-mentioned opening of the cover member of the above-mentioned blade drive device.

According to the third aspect of the present invention, there is provided an electronic device capable of reducing the number of parts and downsizing. As this electronic device, an electronic device provided with the above-mentioned imaging device is provided.

1,201 Blade drive device 10 Base member 11 Opening 12 Base surface 14 to 16 Guide post 19A Upper engaging part 19B Lower engaging part 20 Coil unit 21 York 22 Coil base 23 Coil 24A, 24B Arm part 30 Cover member 31 Opening 32A, 32B Hook part 39 Extension part 40,340 Blade member 41,42 Guide groove 43 Long hole 45,46 Relief part 50,350 Lever unit 51,351 Rotor magnet 52,352 Lever member 53,353 Lever body 54,354 connection Part 55,56,355 Protruding part 61,62 Recessed part 63 Supporting shaft 71,271 Flexible printed circuit board 342 Supporting shaft 400 Smartphone 401 Imaging device

Claims (9)

A base member with a support shaft that extends forward,
A cover member having an opening formed thereof, and a cover member provided so as to cover the front side of the base member.
A blade member arranged inside a blade chamber formed between the base member and the cover member, and a blade member.
An actuator for moving the blade member between a closed position for closing the opening and an open position for opening the opening, comprising an actuator including a lever member connected to the blade member.
The lever member of the actuator is
A lever body that can rotate around the support shaft of the base member, and
A connecting portion that connects the lever body and the blade member,
A protrusion extending forward from the lever body beyond the blade member and including at least one protrusion facing the cover member.
Blade drive device. The blade driving device according to claim 1, wherein the at least one protruding portion of the lever member is formed around the support shaft of the base member along the circumferential direction. The blade driving device according to claim 1 or 2, wherein the blade member is formed with a relief portion for avoiding collision with the at least one protruding portion of the lever member. The actuator is
A rotor magnet rotatably attached to the support shaft of the base member and attached to the lever member, and
A yoke placed at a position where magnetic action is applied to the rotor magnet,
Further comprising a coil wound around a portion of the yoke.
The blade driving device according to any one of claims 1 to 3. The lever member and the rotor magnet are arranged in front of the base member.
The coil and the yoke are arranged behind the base member.
The blade driving device according to claim 4. The blade driving device according to claim 4, wherein the lever member, the rotor magnet, the coil, and the yoke are arranged in front of the base member. A flexible printed board extending along the peripheral edge of the base member, further comprising a flexible printed board internally provided with wiring electrically connected to the actuator.
The base member includes a plurality of engaging portions formed on the outer peripheral surface, and includes a plurality of engaging portions.
The cover member is a hook portion that can be engaged with the plurality of engaging portions of the base member, and is located outside the flexible printed substrate when engaged with the plurality of engaging portions of the base member. Including hooks with extensions to
The blade driving device according to any one of claims 1 to 6. The blade drive device according to any one of claims 1 to 7.
An image pickup device including an image pickup element that receives light incident through the opening of the cover member of the blade drive device. An electronic device comprising the image pickup apparatus according to claim 8.

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