JP2020098303A - Blade drive device and electronic apparatus - Google Patents

Abstract

To provide a blade drive device with which it is possible to operate a blade part that shuts an opening for an imaging device by either motor drive or user's manual work.SOLUTION: A blade drive device 2 comprises a base member 10 in which an opening 12 for an imaging device is formed, and a movable member 60 capable of moving in a direction X with respect to the base member 10. The movable member 60 includes a slider 61 held on the base member 10 so as to be capable of moving in the direction X, a blade part 62 coupled to the slider 61, and a grip 63 for performing operation to move the blade part 62 on the side opposite the slider 61 across the base member 10. The blade drive device 2 further includes a motor 30 for moving the movable member 60 in the direction X until the blade part 62 shuts the opening 12 of the base member 10 or the blade part 62 opens the opening 12 of the base member 10, and a lead screw 40 and a drive member 80 for transmitting the rotation of the motor 30 to the slider 61 of the movable member 60 and moving the movable member 60.SELECTED DRAWING: Figure 10

Description

The present invention relates to a blade drive device and an electronic device, and more particularly to an electronic device including an imaging device.

In recent years, cameras (imaging devices) have been incorporated into various electronic devices such as smartphones and drones. A camera built in such an electronic device generally has a blade that opens and closes by driving a motor, and when the camera is not in use, the blade is closed to prevent external light from entering the image sensor. (See, for example, Patent Document 1).

However, since such a blade is provided inside the electronic device, if the motor that drives the blade operates due to a malfunction or the operation of a third party and the blade opens, the user directly operates the blade. Can't close. In such a case, an unintended image or video may be acquired by the camera.

In particular, recently, electronic devices with built-in cameras are often connected to networks such as the Internet, but electronic devices connected to networks can be remotely operated by malicious programs without the user's knowledge. May be done. When the electronic device is remotely operated, the blade may be opened without the user's knowledge, and an image or video may be captured by the camera and transmitted to the outside. As described above, also from the viewpoint of protecting the privacy of the user, it is required that the user directly operate the blade to be closed.

JP, 2006-242994, A

The present invention has been made in view of the above problems of the conventional technique, and the blades that close the opening for the imaging device can be operated by both driving the motor and manually operating the user. A first object is to provide a drive device.

A second object of the present invention is to provide an electronic device capable of preventing unintentional imaging by the imaging device.

According to the first aspect of the present invention, there is provided a blade drive device capable of operating the blade portion that closes the opening for the image pickup device by both driving the motor and manually operating the user. The blade drive device includes a base member having an opening for the image pickup device, and a movable member movable with respect to the base member in an opening direction and a closing direction opposite to the opening direction. The movable member includes a slider movably held on the base member in the opening direction and the closing direction, a blade portion connected to the slider, and a side opposite to the slider with the base member interposed therebetween. And an operation unit for performing a moving operation of the vane unit. The blade drive device moves the movable member in the closing direction until the blade portion of the movable member closes the opening of the base member, and the blade portion of the movable member moves the opening of the base member. A motor for moving the movable member in the opening direction until it is opened, and a power transmission mechanism for transmitting the rotation of the motor to the slider of the movable member to move the movable member.

According to the blade drive device of the present invention, it is possible to move the movable member in the closing direction by driving the motor to close the opening of the base member with the blade portion of the movable member, and to drive the blade of the movable member by driving the motor. The opening of the blade base member can be opened by moving the portion in the opening direction. Furthermore, since the movable member of the blade driving device is provided with the operating portion, the user can directly move the blade portion in the closing direction or the opening direction from the outside of the blade driving device via the operating portion. Therefore, the operation of the blade portion that closes the opening for the image pickup apparatus can be realized by both the driving of the motor and the manual work of the user.

The blade drive device biases the movable member in the opening direction when the movable member is located on the opening direction side with respect to the biasing reference position, and the movable member moves to the biasing reference position. On the other hand, a biasing member that biases the movable member in the closing direction when positioned on the closing direction side may be further provided. By providing such an urging member, the user moves the operating portion of the movable member in the opening direction or the closing direction to move the movable member toward the opening direction side or the closing direction side from the urging reference position. For example, the biasing member biases the movable member in the opening direction or the closing direction. For this reason, even if the user releases the operation unit, the movable member can be moved in the opening direction or the closing direction, the user's operation becomes easy, and rattling of the movable member in the opening direction or the closing direction is suppressed. be able to.

The power transmission mechanism is provided on the slider, a drive member configured to be movable in the opening direction and the closing direction, a gear mechanism for transmitting the rotation of the motor to the drive member to move the drive member, and the slider. The first engaging portion may be included. The first engagement portion may be configured to engage with the drive member moved by the gear mechanism on the opening direction side of the drive member.

The power transmission mechanism is provided on the slider, a drive member configured to be movable in the opening direction and the closing direction, a gear mechanism for transmitting the rotation of the motor to the drive member to move the drive member, and the slider. The second engaging portion may be included. The second engagement portion may be configured to engage with the drive member moved by the gear mechanism on the closing direction side of the drive member.

According to the second aspect of the present invention, there is provided an electronic device capable of preventing unintentional imaging by the imaging device. This electronic device includes an image pickup device having an image pickup element and the above-described blade drive device. Light from outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device.

With such a configuration, the operation of the blade portion of the blade drive device that closes the opening for the imaging device can be realized by both driving the motor and manually operating the user. Therefore, for example, even if the motor of the blade drive device is driven by a malfunction or the operation of a third party and the opening for the image pickup device opens, the user directly operates the blade portion from the outside of the electronic device to operate the image pickup device. The opening can be closed with a blade. As a result, it is possible to prevent unintentional imaging by the imaging device.

According to the third aspect of the present invention, there is provided an electronic device capable of preventing unintentional imaging by the imaging device. This electronic apparatus includes an image pickup device having an image pickup element, the above-described blade drive device, and a control unit that controls driving of the motor of the blade drive device. Light from outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device. The blade drive device includes a first sensor that detects that the movable member has moved a required distance along the opening direction. The control unit rotates the motor of the blade drive device in a first direction to move the movable member in the opening direction, and the first sensor causes the movable member to move along the opening direction. It is configured to stop the rotation of the motor in the first direction when it is detected that the motor has moved a distance.

According to such a configuration, as described above, the operation of the blade portion of the blade drive device that closes the opening for the image pickup device can be realized by both driving the motor and manual work by the user. It is possible to prevent unintended imaging due to. Further, by controlling the drive of the motor using the detection signal of the first sensor, the movable member can be moved in the opening direction by a desired distance.

According to the fourth aspect of the present invention, there is provided an electronic device capable of preventing unintentional imaging by the imaging device. This electronic apparatus includes an image pickup device having an image pickup element, the above-described blade drive device, and a control unit that controls driving of the motor of the blade drive device. Light from outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device. The blade drive device includes a second sensor that detects that the movable member has moved a required distance along the closing direction. The control unit rotates the motor of the blade drive device in the second direction to move the movable member in the closing direction, and the second sensor causes the movable member to move along the closing direction. It is configured to stop the rotation of the motor in the second direction when it is detected that the motor has moved a distance.

According to such a configuration, as described above, the operation of the blade portion of the blade drive device that closes the opening for the image pickup device can be realized by both driving the motor and manual work by the user. It is possible to prevent unintended imaging due to. Further, by controlling the driving of the motor using the detection signal of the second sensor, the movable member can be moved in the closing direction by a desired distance.

According to the fifth aspect of the present invention, there is provided an electronic device capable of preventing unintentional imaging by the imaging device. This electronic apparatus includes an image pickup device having an image pickup element, the above-described blade drive device, and a control unit that controls driving of the motor of the blade drive device. Light from outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device. The blade drive device includes a first sensor that detects that the movable member has moved a required distance along the opening direction, and a third sensor that detects that the drive member has moved to a predetermined standby position. And a sensor. The control unit rotates the motor of the blade drive device in a first direction to move the movable member in the opening direction via the driving member, and the first sensor causes the movable member to open the movable member. When it is detected that the motor has moved a required distance along the direction, the motor is rotated in a second direction opposite to the first direction to move the drive member in the closing direction, and When the sensor of No. 3 detects that the drive member has moved to the standby position, the rotation of the motor is stopped.

According to such a configuration, as described above, the operation of the blade portion of the blade drive device that closes the opening for the image pickup device can be realized by both driving the motor and manual work by the user. It is possible to prevent unintended imaging due to. Further, by controlling the drive of the motor using the detection signal of the first sensor, the movable member can be moved in the opening direction by a desired distance. Furthermore, by controlling the drive of the motor using the detection signal of the third sensor, it is possible to return the drive member to the desired standby position after moving the movable member in the opening direction by a desired distance.

According to the sixth aspect of the present invention, there is provided an electronic device capable of preventing unintentional imaging by the imaging device. This electronic apparatus includes an image pickup device having an image pickup element, the above-described blade drive device, and a control unit that controls driving of the motor of the blade drive device. Light from outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device. The blade drive device includes a second sensor that detects that the movable member has moved a required distance along the closing direction, and a third sensor that detects that the drive member has moved to a predetermined standby position. And a sensor. The control unit rotates the motor of the blade drive device in a second direction to move the movable member in the closing direction via the drive member, and the second sensor closes the movable member. When it is detected that the motor has moved the required distance along the direction, the motor is rotated in the first direction opposite to the second direction to move the drive member in the opening direction, and When the sensor of No. 3 detects that the drive member has moved to the standby position, the rotation of the motor is stopped.

According to such a configuration, as described above, the operation of the blade portion of the blade drive device that closes the opening for the image pickup device can be realized by both driving the motor and manual work by the user. It is possible to prevent unintended imaging due to. Further, by controlling the driving of the motor using the detection signal of the second sensor, the movable member can be moved in the closing direction by a desired distance. Furthermore, by controlling the drive of the motor using the detection signal of the third sensor, it is possible to return the drive member to the desired standby position after moving the movable member in the closing direction by a desired distance.

The electronic device may further include a communication interface for connecting to a network. When the electronic device is connected to the network via such a communication interface, it may be remotely operated by a malicious program without the user's knowledge. According to this, as described above, since the user can directly operate the blade portion from the outside of the electronic device to close the opening for the imaging device with the blade portion, the privacy of the user can be secured.

According to the present invention, the operation of the blade portion that closes the opening for the image pickup device can be realized by both the driving of the motor and the manual work of the user, and it is possible to prevent unintended image pickup by the image pickup device.

FIG. 1 is a perspective view showing an electronic device according to an embodiment of the present invention. FIG. 2 is a rear perspective view showing the blade drive device in the electronic device of FIG. 1. FIG. 3 is an exploded perspective view of the blade drive device of FIG. FIG. 4 is a perspective view showing a base member in the blade drive device of FIG. FIG. 5 is a rear view of the base member of FIG. FIG. 6 is a perspective view of a movable member in the blade drive device of FIG. FIG. 7 is a plan view of the movable member shown in FIG. FIG. 8 is a rear view of the movable member shown in FIG. FIG. 9 is an exploded perspective view of the movable member of FIG. FIG. 10 is a perspective view of the blade drive device showing the casing of FIG. 2 as seen through. FIG. 11A is a rear perspective view showing a drive member in the blade drive device of FIG. 10. FIG. 11B is a front perspective view showing a drive member in the blade drive device of FIG. 10. FIG. 12A is a rear view showing a part of the blade drive device in the state shown in FIG. 2. 12B is a rear view showing a state in which the movable member is moved in the opening direction from the closed state shown in FIG. 12A. FIG. 12C is a rear view showing a state in which the movable member is moved in the opening direction by the biasing force of the torsion spring from the state shown in FIG. 12B. FIG. 13 is a timing chart showing a control sequence when the motor is driven to move the movable member in the blade drive device shown in FIG. FIG. 14 is a flow chart showing control of the motor when the motor is driven to move the movable member in the opening direction in the blade drive device shown in FIG. FIG. 15A is a rear view showing a state where the movable member is moved in the opening direction by driving the motor from the closed state shown in FIG. 12A. FIG. 15B is a rear view showing a state in which the movable member is further moved in the opening direction by driving the motor from the state shown in FIG. 15A. FIG. 15C is a rear view showing a state in which the drive member is moved in the closing direction by driving the motor after the state shown in FIG. 15B. 16 is a flowchart showing control of the motor when the motor is driven to move the movable member in the closing direction in the blade drive device shown in FIG. FIG. 17A is a rear view showing a state in which the movable member is moved in the closing direction by driving the motor from the open state shown in FIG. 12C. FIG. 17B is a rear view showing a state in which the drive member is moved in the opening direction by driving the motor after the state shown in FIG. 17A.

Hereinafter, an embodiment of an electronic device according to the present invention will be described in detail with reference to FIGS. 1 to 17B. Note that, in FIGS. 1 to 17B, the same or corresponding components are denoted by the same reference numerals, and redundant description will be omitted. Further, in FIGS. 1 to 17B, the scale and dimensions of each component may be exaggerated or some components may be omitted.

FIG. 1 is a perspective view showing an electronic device 1 according to an embodiment of the present invention. The electronic device 1 is a network device having a communication interface (not shown) inside, and can be connected to a network such as the Internet via the communication interface. The electronic device 1 also includes an image pickup device 4 inside. Examples of such electronic device 1 include smartphones, tablets, computers, security cameras, drones, AI speakers, and the like.

As shown in FIG. 1, the electronic device 1 controls an operation of the imaging device 4, a blade driving device 2 for blocking light incident on an imaging element (not shown) of the imaging device 4, and the blade driving device 2. And a control unit 3 for controlling the operation. In the present embodiment, for convenience, the +Z direction in FIG. 1 is “upper” or “upper”, the −Z direction is “lower” or “lower”, and the +Y direction is “front” or “front”, −Y. The direction is referred to as "rear" or "rearward".

2 is a rear perspective view showing the blade drive device 2, and FIG. 3 is an exploded perspective view of the blade drive device 2 of FIG. As shown in FIGS. 2 and 3, the blade drive device 2 includes a base member 10 having a substantially rectangular plate shape, a casing 20 attached to the rear surface side of the base member 10, a motor 30 attached to the casing 20, and a motor 30. And a lead screw 40 attached to the motor shaft. A circular opening 12 is formed in the base member 10 in this embodiment. The central axis of the opening 12 and the optical axis of the image pickup device 4 are substantially coincident with each other, and light from the outside of the electronic device 1 enters the image pickup device of the image pickup device 4 in the electronic device 1 through the opening 12. Is becoming

FIG. 4 is a perspective view of the base member 10, and FIG. 5 is a rear view. As shown in FIGS. 4 and 5, a frame portion 14 protruding in the −Y direction is formed on the rear surface of the base member 10. The frame portion 14 is provided with a protrusion 17 and a protrusion 18 that protrude in the −Y direction. As shown in FIG. 3, the casing 20 described above is attached to the frame portion 14 with screws 22. The projection 17 formed on the frame portion 14 and the positioning hole 20A formed on the casing 20 engage with each other to position the frame portion 14 and the casing 20 on the XZ plane.

Further, as shown in FIG. 3, a first sensor 51 and a second sensor 52 are arranged between the side wall 20B on the −Z direction side of the casing 20 and the frame portion 14 of the base member 10. A third sensor 53 is embedded in the side wall 20C on the −Y direction side of the casing 20. These sensors 51 to 53 are connected to the control unit 3 (see FIG. 1) via signal lines (not shown), and sensor outputs from the sensors 51 to 53 are input to the control unit 3. .. As these sensors 51 to 53, any type of sensor can be used as long as it can detect the presence of a detection target. Examples of such sensors 51 to 53 are optical sensors and proximity sensors (for example, Eddy current, capacitance, magnetic force, etc.) and the like.

The motor 30 is attached to the casing 20 with screws 32. The motor 30 is connected to the control unit 3 (see FIG. 1) via a signal line (not shown) and is driven by a signal from the control unit 3. As shown in FIG. 3, the lead screw 40 connected to the motor 30 is inserted into the casing 20 through an opening 24 formed in the casing 20. A movable member 60 that is movable in the X direction with respect to the base member 10 is housed inside the casing 20.

6 is a perspective view of the movable member 60, FIG. 7 is a plan view, FIG. 8 is a rear view, and FIG. 9 is an exploded perspective view. As shown in FIGS. 6 to 9, the movable member 60 includes a slider 61 having a substantially rectangular plate shape, a blade portion 62 having a substantially disk shape, a handle 63 extending from the blade portion 62 in the +Y direction, and a blade portion 62. It includes a connecting portion 64 that connects the slider 61. The connecting portion 64 is fixed to the blade portion 62 with an adhesive or the like, and is fixed to the slider 61 with a screw 65. As shown in FIG. 9, the slider 61 is formed with two grooves 61A into which the legs 64A of the connecting portion 64 are fitted, and when the connecting portion 64 is attached to the slider 61, the connecting portion 64 is connected. The leg portion 64A of the portion 64 is fitted into the groove 61A of the slider 61.

As shown in FIGS. 6 to 9, the slider 61 includes cylindrical guide portions 611 and 612 protruding in the +Z direction, cylindrical guide portions 613 and 614 protruding in the −Z direction, and extending in the −Y direction. And a protrusion 615. Further, in the vicinity of the edge portion in the −Z direction of the slider 61, a first detection piece 616 which is a detection target of the first sensor 51 and a second detection piece 617 which is a detection target of the second sensor 52 are provided. Are formed. In this embodiment, the first detection piece 616 of the slider 61 can pass through the inside of the groove formed in the first sensor 51, and the first sensor 51 slides inside the groove. The position of the slider 61 is detected by detecting whether or not the first detection piece 616 of 61 exists. Similarly, the second detection piece 617 of the slider 61 can pass through the inside of the groove formed in the second sensor 52, and the second sensor 52 is provided inside the groove of the slider 61. The position of the slider 61 is detected by detecting whether or not the second detection piece 617 is present.

Further, as shown in FIGS. 6 to 9, the slider 61 has a first engaging portion 618 and a second engaging portion 619 that project in the −Y direction. The first engaging portion 618 is located on the −X direction side, and the second engaging portion 619 is located on the +X direction side.

Returning to FIG. 4, guide grooves 151, 152, 153 extending in the X direction are formed on the side surface of the frame portion 14 of the base member 10. The guide grooves 151 and 152 of the base member 10 accommodate the guide portions 611 and 612 of the slider 61, respectively, and the guide groove 153 accommodates the guide portions 613 and 614 of the slider 61. The guide portion 611 of the slider 61 is movable in the guide groove 151 of the base member 10 in the X direction, and the guide portion 612 of the slider 61 is movable in the guide groove 152 of the base member 10 in the X direction. The guide portions 613 and 614 of the slider 61 are movable in the guide groove 153 of the base member 10 in the X direction. With such a configuration, the slider 61 can be moved in the X direction while being held inside the frame portion 14 of the base member 10.

As shown in FIGS. 4 and 5, two grooves 16 extending in the X direction are formed inside the frame portion 14 of the base member 10. The groove 16 penetrates the base member 10, and the intermediate portion 64B (see FIGS. 7 and 9) of the connecting portion 64 of the movable member 60 is inserted into the groove 16. With such a configuration, the blade portion 62 connected to the connecting portion 64 and the handle 63 formed on the blade portion 62 are located on the side opposite to the slider 61 (front of the base member 10) with the base member 10 interposed therebetween. be able to. Therefore, the movable member 60 is movable in the X direction with the blade portion 62 and the handle 63 positioned in front of the base member 10. In the present embodiment, as shown in FIG. 1, the front surface of the base member 10 constitutes a part of the front surface of the electronic device 1.

As shown in FIG. 3, a torsion spring 67 is arranged inside the casing 20. One end of the torsion spring 67 is engaged with the protrusion 615 of the slider 61, and the other end of the torsion spring 67 is engaged with the protrusion 18 of the frame portion 14 of the base member 10. By such a torsion spring 67, the slider 61 (that is, the movable member 60) is biased in the X direction (+X direction or −X direction) with respect to the base member 10. As will be described later, the direction in which the torsion spring 67 biases the movable member 60 changes depending on the position of the slider 61. In the state shown in FIG. 3, the torsion spring 67 urges the movable member 60 in the +X direction.

FIG. 10 is a perspective view of the blade drive device 2 showing the casing 20 as seen through. As shown in FIG. 10, a guide shaft 70 extending in the X direction is arranged inside the casing 20. A drive member 80 movable in the X direction is attached on the guide shaft 70.

11A is a rear perspective view showing the drive member 80, and FIG. 11B is a front perspective view. As shown in FIGS. 11A and 11B, the drive member 80 includes a main body 82 having an insertion hole 81 into which the guide shaft 70 is inserted, a protrusion 83 protruding from the main body 82 in the −Y direction, and a +Z from the main body 82. It has a third detection piece 84 which extends in the direction and is a detection target of the third sensor 53, and a drive piece 85 which extends from the main body 82 in the +Y direction. The drive member 80 is arranged so that the protrusion 83 engages with the lead screw 40. Therefore, as the lead screw 40 rotates, a force in the X direction is applied to the drive member 80 from the lead screw 40, whereby the drive member 80 moves in the X direction. The third detection piece 84 of the drive member 80 can pass through the inside of the groove formed in the third sensor 53, and the third sensor 53 is located inside the groove of the drive member 80. The position of the drive member 80 is detected by detecting whether or not the third detection piece 84 is present.

The drive piece 85 of the drive member 80 engages with the first engaging portion 618 of the movable member 60 when the drive member 80 moves in the −X direction, and moves when the drive member 80 moves in the +X direction. It engages with the second engaging portion 619 of the member 60. The details will be described later.

FIG. 12A is a rear view showing a part of the blade drive device 2 in the state shown in FIG. As shown in FIG. 12A, in this state, the blade portion 62 of the movable member 60 overlaps the opening 12 of the base member 10 and closes the opening 12. This state is referred to as the “closed state” of the blade drive device 2. In this closed state, the opening 12 of the base member 10 is located between the blade portion 62 of the movable member 60 and the image sensor of the image pickup device 4, and the blade portion 62 of the movable member 60 is outside the electronic device 1. It is exposed to. With such a configuration, the user can arbitrarily operate the blade portion 62 exposed to the outside.

Here, the blade portion 62 of the movable member 60 has a function of hindering light incident on the image pickup device of the image pickup device 4 in the electronic device 1 from outside the electronic device 1 in some way, and for example, from the outside. It is possible to use, as the blade portion 62, a light-shielding plate that completely blocks light, a frosted glass that scatters light, a filter that transmits only light of a predetermined wavelength, or the like. The blade portion 62 in the present embodiment is configured as a light blocking plate that completely blocks light from the outside. Therefore, the light outside the electronic device 1 is blocked by the blade portion 62 and does not enter the image pickup device of the image pickup device 4 in the electronic device 1. For example, when the image pickup device 4 in the electronic device 1 is not used, the blade drive device 2 is closed to prevent external light from entering the image pickup device of the image pickup device 4 in the electronic device 1. Can be prevented.

The blade portion 62 of the movable member 60 can be manually moved in the -X direction when the blade driving device 2 is in the closed state. That is, the user holds the handle 63 (see FIG. 1) of the movable member 60 arranged on the front surface of the electronic device 1 and moves the handle 63 in the −X direction to move the blade portion 62 (movable member 60) to −. It can be moved in the X direction.

When the blade drive device 2 is in the closed state shown in FIG. 12A, the torsion spring 67 urges the movable member 60 in the +X direction, but the position of the protrusion 615 of the slider 61 of the movable member 60 in the X direction is the base. When the movable member 60 is moved until it is located on the −X direction side of the position of the projection 18 of the frame portion 14 of the member 10 in the X direction, the torsion spring 67 biases the movable member 60 in the −X direction. .. 12B, the movable member 60 is moved in the −X direction from the state shown in FIG. 12A, and the position of the protrusion 615 of the slider 61 of the movable member 60 in the X direction and the direction of the protrusion 18 of the frame portion 14 of the base member 10 in the X direction are moved. The state in which the position of the movable member 60 is matched with the position of (is referred to as the biasing reference position). The direction in which the torsion spring 67 biases the movable member 60 is reversed depending on whether the movable member 60 is on the +X direction side or the −X direction side with the bias reference position as a boundary. That is, when the movable member 60 is located on the +X direction side of the bias reference position, the torsion spring 67 biases the movable member 60 in the +X direction, and the movable member 60 moves from the bias reference position in the −X direction. When located on the side, the torsion spring 67 biases the movable member 60 in the −X direction.

As described above, the torsion spring 67 in the present embodiment biases the movable member 60 in the −X direction when the movable member 60 is located on the −X direction side with respect to the biasing reference position, and the movable member 60 is moved. Functions as a biasing member that biases the movable member 60 in the +X direction when it is located on the +X direction side with respect to the bias reference position. By providing such a biasing member, the user's operation becomes easy as described below, and rattling of the movable member in the opening direction or the closing direction can be suppressed. Needless to say, such a biasing member is not limited to the illustrated torsion spring 67.

By providing the torsion spring 67 as such an urging member, the user moves the grip 63 of the movable member 60 in the −X direction to move the movable member 60 to the −X direction side from the urging reference position. After that, the torsion spring 67 biases the movable member 60 in the −X direction, so that even if the user releases the handle 63, the movable member 60 continues to move in the −X direction. Finally, as shown in FIG. 12C, the slider 61 moves in the −X direction until the end surface 61B (see FIG. 6) contacts the side surface 14B (see FIG. 5) of the frame portion 14 of the base member 10. As a result, the blade portion 62 of the movable member 60 leaves the opening 12 of the base member 10, and the opening 12 of the base member 10 is opened.

Further, in the state shown in FIG. 12C, the user can move the blade portion 62 (movable member 60) in the +X direction by pinching the handle 63 of the movable member 60 and moving the handle 63 in the +X direction. .. In this case, if the movable member 60 is moved to the +X direction side from the biasing reference position, the torsion spring 67 will bias the movable member 60 in the +X direction, so the user releases the handle 63. Also, the movable member 60 continues to move in the +X direction until the end surface 61C (see FIG. 6) of the slider 61 comes into contact with the side surface 14C (see FIG. 4) of the frame portion 14 of the base member 10 as shown in FIG. 12A. Move in +X direction. Thereby, the blade portion 62 of the movable member 60 moves to the position of the opening 12 of the base member 10, and the opening 12 of the base member 10 can be closed by the blade portion 62.

As described above, the handle 63 of the movable member 60 in the present embodiment has a function as an operation unit for performing a moving operation of the blade 62 on the side opposite to the slider 61 with the base member 10 interposed therebetween. Since the blade drive device 2 in the present embodiment has such an operation unit, the user can directly move the blade unit from the outside of the electronic device 1 via the operation unit. Such an operation section is not limited to the one like the handle 63 shown in the figure, and a recess may be formed on the surface of the blade 62 to serve as the operation section.

Further, the blade portion 62 of the movable member 60 can also be moved in the X direction by driving the motor 30. FIG. 13 is a timing chart showing a control sequence when driving the motor 30 to move the blade portion 62 of the movable member 60 in the X direction.

For example, by driving the motor 30 when the blade drive device 2 is in the closed state shown in FIG. 12A, the movable member 60 can be moved in the −X direction to open the opening 12 of the base member 10. FIG. 14 is a flowchart showing the control of the motor 30 at this time. Hereinafter, this control will be described in more detail.

First, the control unit 3 sends a drive signal to the motor 30 to apply, for example, a positive voltage to the motor 30 to rotate the motor 30 in the forward direction (first direction) (step S11). As a result, the lead screw 40 also rotates in the forward direction. The engagement between the lead screw 40 and the protrusion 83 of the drive member 80 causes the drive member 80 to move on the guide shaft 70 in the −X direction (opening direction). The movable member 60 (slider 61) is not moved because it is biased in the +X direction by the torsion spring 67.

At this time, the control unit 3 monitors whether or not the first detection piece 616 of the slider 61 is detected by the first sensor 51 (step S12). In the present embodiment, the first sensor 51 detects that the movable member 60 has moved in the −X direction by a predetermined distance from the bias reference position shown in FIG. 12B, and the first sensor 51 of the slider 61 in FIG. It is arranged on the −X direction side of the first detection piece 616. Therefore, when the first sensor 51 does not detect the first detection piece 616 of the slider 61, the control unit 3 determines that the movable member 60 has not moved in the −X direction by the required distance. Then, the motor 30 is continuously rotated in the forward direction.

When the driving member 80 moves in the −X direction by rotating the motor 30 in the forward direction as described above, the driving piece 85 of the driving member 80 eventually engages with the first engaging portion 618 of the slider 61, As shown in FIG. 15A, as the drive member 80 moves in the −X direction, the slider 61 also moves in the −X direction. When the driving member 80 and the slider 61 are further moved in the −X direction by the rotation of the motor 30, and the first detection piece 616 of the slider 61 is moved to the position of the first sensor 51 as shown in FIG. Sensor 51 detects the first detection piece 616 of the slider 61. Upon receiving the detection signal of the first detection piece 616 of the slider 61, the control unit 3 applies, for example, a negative voltage to the motor 30 to rotate the motor 30 in the reverse direction (second direction) (step S13). As a result, the lead screw 40 rotates in the opposite direction, and the drive member 80 moves in the +X direction (closing direction) as shown in FIG. 15C. At this time, since the slider 61 of the movable member 60 is located on the −X direction side of the bias reference position described above and is biased in the −X direction by the torsion spring 67, the end surface 61B( 6) moves in the -X direction until it comes into contact with the side surface 14B (see FIG. 5) of the frame portion 14 of the base member 10.

At this time, the control unit 3 monitors whether or not the third detection piece 84 of the driving member 80 is detected by the third sensor 53 (step S14). In the present embodiment, the third sensor 53 detects that the drive member 80 has moved to a predetermined standby position, and is arranged at the standby position set approximately in the center of the guide shaft 70. Therefore, when the third sensor 53 does not detect the third detection piece 84 of the drive member 80, it is determined that the drive member 80 has not yet reached the standby position, and the control unit 3 causes the motor 30 to move. Keep rotating in the opposite direction.

When the drive member 80 moves in the +X direction by rotating the motor 30 in the reverse direction as described above and the drive member 80 moves to the standby position, the third sensor 53 causes the third detection piece of the drive member 80 to move. The control unit 3 that detects 84 and receives the detection signal of the third detection piece 84 of the drive member 80 stops the motor 30 (step S15). In this way, the opening operation shown in FIG. 13 is completed. The state at this time is the same as the state shown in FIG. 12C, and this state is referred to as the “open state” of the blade drive device 2.

Further, by driving the motor 30 when the blade drive device 2 is in the open state shown in FIG. 12C, the movable member 60 can be moved in the +X direction to close the opening 12 of the base member 10 with the blade portion 62. .. FIG. 16 is a flowchart showing the control of the motor 30 at this time. Hereinafter, this control will be described in more detail.

First, the control unit 3 sends a drive signal to the motor 30 to apply a negative voltage, for example, to the motor 30 to rotate the motor 30 in the reverse direction (second direction) (step S21). As a result, the lead screw 40 also rotates in the opposite direction. The engagement between the lead screw 40 and the protrusion 83 of the drive member 80 causes the drive member 80 to move on the guide shaft 70 in the +X direction (close direction). The slider 61 of the movable member 60 does not move because it is biased in the −X direction by the torsion spring 67.

At this time, the control unit 3 monitors whether or not the second detection piece 617 of the slider 61 is detected by the second sensor 52 (step S22). In the present embodiment, the second sensor 52 detects that the movable member 60 has moved in the +X direction by a predetermined distance from the biasing reference position shown in FIG. 12B, and the second sensor 52 of the slider 61 in FIG. Is arranged on the +X direction side of the detection piece 617. Therefore, when the second sensor 52 does not detect the second detection piece 617 of the slider 61, the control unit 3 determines that the movable member 60 has not moved in the +X direction by the required distance. , The motor 30 continues to rotate in the reverse direction.

When the drive member 80 moves in the +X direction by rotating the motor 30 in the reverse direction as described above, the drive piece 85 of the drive member 80 eventually engages with the second engagement portion 619 of the slider 61, and As shown in 17A, as the drive member 80 moves in the +X direction, the slider 61 also moves in the +X direction. Then, as shown in FIG. 17A, when the second detection piece 617 of the slider 61 moves to the position of the second sensor 52, the second sensor 52 detects the second detection piece 617 of the slider 61. Upon receiving the detection signal from the second detection piece 617 of the slider 61, the control unit 3 applies, for example, a positive voltage to the motor 30 to rotate the motor 30 in the forward direction (first direction) (step S23). As a result, the lead screw 40 rotates in the forward direction, and the drive member 80 moves in the −X direction (opening direction) as shown in FIG. 17B. At this time, the slider 61 of the movable member 60 is located on the +X direction side of the bias reference position described above, and is biased in the +X direction by the torsion spring 67. (See) moves in the +X direction until it comes into contact with the side surface 14C (see FIG. 4) of the frame portion 14 of the base member 10.

At this time, the control unit 3 monitors whether or not the third detection piece 84 of the drive member 80 is detected by the third sensor 53 (step S24). When the third sensor 53 does not detect the third detection piece 84 of the drive member 80, it is determined that the drive member 80 has not reached the standby position yet, and the control unit 3 reverses the motor 30. Keep rotating in the direction. On the other hand, when the third sensor 53 detects the third detection piece 84 of the drive member 80, the control unit 3 which receives the detection signal of the third detection piece 84 of the drive member 80 stops the motor 30 (step S25). ). In this way, the closing operation shown in FIG. 13 is completed. The state at this time is the open state shown in FIG. 12A.

As described above, in the present embodiment, the lead screw 40 attached to the motor shaft of the motor 30 and the drive member 80 transmit the rotation of the motor 30 to the slider 61 of the movable member 60 to move the movable member 60. A power transmission mechanism is configured. Further, the lead screw 40 and the projection 83 of the drive member 80 constitute a gear mechanism that transmits the rotation of the motor 30 to the drive member 80 and moves the drive member 80. Such a power transmission mechanism and a gear mechanism are not limited to the illustrated examples, and other power transmission elements may be combined to configure these mechanisms.

The blade drive device 2 in the present embodiment can move the movable member 60 in the +X direction (close direction) by driving the motor 30, and close the opening 12 of the base member 10 with the blade portion 62 of the movable member 60. By driving the motor 30, the blade portion 62 of the movable member 60 can be moved in the −X direction (opening direction) to open the opening 12 of the base member 10. Further, as described above, since the movable member 60 of the blade drive device 2 according to the present embodiment has the handle 63 as the operation portion, the user directly enters the blade portion 62 from the outside of the electronic device 1 via the operation portion. Can be moved in the +X direction (close direction) or in the -X direction (open direction). As described above, according to the blade driving device 2 of the present embodiment, the operation of the blade portion 62 that closes the opening 12 for the imaging device 4 can be realized by both driving the motor 30 and the user's manual work.

Further, as described above, since the movable member 60 is biased in the X direction by the torsion spring 67, the end surface 61B or the end surface 61C of the slider 61 of the movable member 60 is the side surface 14B of the frame portion 14 of the base member 10 or It is not necessary to drive the motor 30 until it comes into contact with the side surface 14C. Therefore, the length of the lead screw 40 in the X direction can be shortened, and the blade drive device 2 can be downsized.

In the embodiment described above, as can be seen from FIG. 1, the base member 10 of the blade drive device 2 is a part of the housing (exterior) that is visible from the outside of the electronic device 1, and the blade drive device 2 The blade portion 62 is exposed to the outside of the electronic device 1. However, in another embodiment, the base member 10 may be arranged so as to be hidden inside the housing of the electronic device 1.

Therefore, in the electronic device 1 including the blade driving device 2 as described above, for example, even if the motor 30 of the blade driving device 2 is driven by a malfunction or the operation of a third party and the opening 12 opens, the electronic device 1 The user can directly operate the blade 62 from the outside to close the opening 12 with the blade 62. As a result, it is possible to prevent unintended imaging by the imaging device 4. In particular, when the electronic device 1 is connected to a network such as the Internet via the communication interface, it may be remotely operated by a malicious program without the user's knowledge. In addition, since the user can directly operate the blade portion 62 from the outside of the electronic device 1 to close the opening 12 for the imaging device 4 with the blade portion 62, the privacy of the user can be secured.

The positive/negative of the voltage applied to the motor 30 and the rotation direction (forward direction and reverse direction) of the motor 30 described above are merely examples for showing that they are opposite to each other, and are not limited to the embodiment to which the present invention is applied. It goes without saying that it can change accordingly.

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

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Blade drive device 3 Control part 4 Imaging device 10 Base member 12 Opening 14 Frame part 16 Groove 17 Protrusion 18 Protrusion 20 Casing 30 Motor 40 Lead screw 51 First sensor 52 Second sensor 53 Third sensor 60 Movable member 61 Slider 62 Blade part 63 Handle (operation part)
64 connection part 67 torsion spring (biasing member)
70 Guide shaft 80 Drive member 82 Main body 83 Protrusion 84 Third detection piece 85 Drive piece 615 Protrusion 616 First detection piece 617 Second detection piece 618 First engagement portion 619 Second engagement portion

Claims (10)

A base member having an opening for an imaging device,
A movable member that is movable with respect to the base member in an opening direction and a closing direction opposite to the opening direction,
A slider movably held in the opening direction and the closing direction on the base member;
A blade portion connected to the slider,
A movable member including an operating portion for performing a moving operation of the blade portion on the side opposite to the slider with the base member interposed therebetween;
The movable member is moved in the closing direction until the blade portion of the movable member closes the opening of the base member, and the movable member until the blade portion of the movable member opens the opening of the base member. A motor for moving the in the opening direction,
And a power transmission mechanism for moving the movable member by transmitting the rotation of the motor to the slider of the movable member. The movable member is biased in the opening direction when the movable member is located on the opening direction side with respect to the bias reference position, and the movable member is close to the bias reference position in the closing direction side. The blade drive device according to claim 1, further comprising a biasing member that biases the movable member in the closing direction when the blade drive device is positioned at. The power transmission mechanism is
A drive member configured to be movable in the opening direction and the closing direction,
A gear mechanism that transmits the rotation of the motor to the drive member to move the drive member;
A first engaging portion provided on the slider, wherein the first engaging portion is configured to engage with the drive member moved by the gear mechanism on the opening direction side of the drive member. The blade drive device according to claim 1 or 2, further comprising: The power transmission mechanism is
A drive member configured to be movable in the opening direction and the closing direction,
A gear mechanism that transmits the rotation of the motor to the drive member to move the drive member;
A second engaging portion provided on the slider, the second engaging portion configured to engage with the drive member moved by the gear mechanism on the closing direction side of the drive member. The blade drive device according to claim 1 or 2, further comprising: An imaging device having an imaging element;
A blade drive device according to any one of claims 1 to 4,
Light from the outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device.
Electronics. An imaging device having an imaging element;
A blade drive device according to any one of claims 1 to 4,
A control unit that controls the drive of the motor of the blade drive device,
Light from the outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device,
The blade drive device includes a first sensor that detects that the movable member has moved a required distance along the opening direction,
The control unit is
Rotating the motor of the blade drive device in a first direction to move the movable member in the opening direction,
When it is detected by the first sensor that the movable member has moved a required distance along the opening direction, the rotation of the motor in the first direction is stopped.
Electronics. An imaging device having an imaging element;
A blade drive device according to any one of claims 1 to 4,
A control unit that controls the drive of the motor of the blade drive device,
Light from the outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device,
The blade driving device includes a second sensor that detects that the movable member has moved a required distance along the closing direction,
The control unit is
Rotating the motor of the blade drive device in a second direction to move the movable member in the closing direction,
When the second sensor detects that the movable member has moved a required distance along the closing direction, the rotation of the motor in the second direction is stopped.
Electronics. An imaging device having an imaging element;
A blade drive device according to claim 3 or 4,
A control unit for controlling the drive of the motor of the blade drive device,
Light from the outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device,
The blade driving device is
A first sensor that detects that the movable member has moved a required distance along the opening direction;
A third sensor for detecting that the drive member has moved to a predetermined standby position,
The control unit is
Rotating the motor of the blade drive device in a first direction to move the movable member in the opening direction via the drive member,
When the first sensor detects that the movable member has moved a required distance along the opening direction, the motor is rotated in a second direction opposite to the first direction, and the motor is rotated in the second direction. Moving the drive member in the closing direction,
When the third sensor detects that the drive member has moved to the standby position, the rotation of the motor is stopped.
Electronics. An imaging device having an imaging element;
A blade drive device according to claim 3 or 4,
A control unit that controls the drive of the motor of the blade drive device,
Light from the outside is configured to enter the image pickup device of the image pickup device through the opening of the base member of the blade drive device,
The blade driving device is
A second sensor that detects that the movable member has moved a required distance along the closing direction;
A third sensor for detecting that the drive member has moved to a predetermined standby position,
The control unit is
Rotating the motor of the blade drive device in a second direction to move the movable member in the closing direction via the drive member,
When the second sensor detects that the movable member has moved a required distance along the closing direction, the motor is rotated in a first direction opposite to the second direction, and the motor is rotated in the first direction. Moving the drive member in the opening direction,
When the third sensor detects that the drive member has moved to the standby position, the rotation of the motor is stopped.
Electronics. The electronic device according to claim 5, further comprising a communication interface for connecting to a network.

Images