Blade driving device and imaging device

Abstract

A blade driving device; and an imaging device. A blade drive device (1) is provided with: a base in which an opening is formed; a vane member provided with a cam hole, the vane member being rotatable about a vane shaft between a closed position for closing the opening and an open position for opening the opening; and an actuator that drives the vane member to rotate between a closed position and an open position. The actuator includes a rotating member that is rotatable about the drive shaft and that moves between a first rotational position corresponding to the closed position of the blade member and a second rotational position corresponding to the open position while engaging with the cam hole of the blade member. The cam hole is configured so as to allow the drive pin to rotate when the vane member is in the closed position and the open position, and so as to contact the drive pin when the vane member is about to rotate in a state in which the drive pin is in the first rotational position or the second rotational position, the contact surface being perpendicular to a line connecting the center of the drive shaft and the center of the drive pin.

Description

Technical Field

[0001] The invention relates to a blade driving device and an imaging device. Background Art

[0002] In an imaging device such as a camera or a camcorder, a blade drive device is used to realize a shutter function and a filter switching function. The blade drive device uses a blade member to open and close an opening for exposing an imaging element in the imaging device. In such a blade drive device, the blade member is moved between a closed position for closing the opening and an open position for opening the opening, and the blade member is held at a stationary position in either the closed position or the open position (for example, see Patent Document 1).

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2020-154150

[0004] However, when the camera device falls or is installed in an environment where vibration is easily transmitted, a large impact is applied to the blade drive device, so that the blade component moves from the static position, and the open state or closed state of the opening changes, which may have an adverse effect on the captured image. Summary of the Invention

[0005] The present invention has been made in view of the above-mentioned problems in the conventional technology, and an object of the present invention is to provide a blade drive device in which a blade member is unlikely to move from a stationary position even when a large impact is applied, and an imaging device having such a blade drive device.

[0006] According to a first aspect of the present invention, a blade drive device is provided, which comprises: a base, which is provided with an opening; a blade component, which can rotate around a first axis between a closed position for closing the opening and an open position for opening the opening, and the blade component is provided with a cam hole; and a driving unit, which drives the blade component to rotate the blade component between the closed position and the open position, the driving unit including a rotating component, which can rotate around a second axis, and the rotating component has a driving pin, which engages with the cam hole of the blade component while rotating in a first position corresponding to the closed position of the blade component. The cam hole of the blade member allows the driving pin to rotate from the first rotation position toward the second rotation position or from the second rotation position toward the first rotation position when the blade member is located in the closed position or the open position, and when the blade member rotates from the closed position to the open position or from the open position to the closed position with the driving pin located in the first rotation position or the second rotation position, a first vertical plane perpendicular to a line connecting the center of the second shaft and the center of the driving pin contacts the driving pin.

[0007] According to a second aspect of the present invention, there is provided an imaging device including: the blade drive device; and an imaging element disposed on a surface on which an image is formed of light transmitted through the opening of the base of the blade drive device.

[0008] According to the present invention, when a large impact is applied to the blade component in a state where the drive pin is located in the first rotational position or the second rotational position, so that the blade component is intended to rotate from the closed position to the open position or from the open position to the closed position, the first vertical plane perpendicular to the line connecting the center of the drive shaft and the center of the drive pin contacts the drive pin. Therefore, even if the first vertical plane of the cam hole presses the drive pin, the rotating component will be pressed in the direction toward the second axis. Therefore, it is not easy for the rotating component to rotate around the second axis. Therefore, the rotation of the blade component that is not related to the rotation drive of the driving unit is suppressed. In addition, when the blade component is located in the closed position or the open position, the drive pin is allowed to rotate from the first rotational position toward the second rotational position or from the second rotational position toward the first rotational position. Therefore, if the drive unit is driven, the drive pin can be moved from the first rotational position to the second rotational position or from the second rotational position to the first rotational position, so that the blade component is moved to the open position or the closed position. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a perspective view showing a blade drive device according to one embodiment of the present invention.

[0010] Figure 2 It shows Figure 1 An exploded perspective view of some components of the blade drive device.

[0011] Figure 3 It is schematically shown Figure 1 A front view of the state in which the blade component of the blade driving device is located in the closed position.

[0012] Figure 4 It is schematically shown Figure 1 A front view of the blade driving device when the blade component is in the open position.

[0013] Figure 5 yes Figure 3 An enlarged partial view of the blade component is shown.

[0014] Figure 6 yes Figure 3 A partial enlarged view of the blade components and rotating components is shown.

[0015] Figure 7 yes Figure 4 A partial enlarged view of the blade components and rotating components is shown.

[0016] Description of labels

[0017] 1: Blade drive device; 10: Base; 11, 13: Stoppers; 14: Opening; 16: Blade shaft (1st shaft); 18: Drive shaft (2nd shaft); 20: Cover; 30: Blade component; 38: Cam hole; 40: Actuator (drive part); 41: Yoke; 42: Coil; 44: Rotating component; 46: Rotor magnet; 47: Drive rod; 48: Drive pin; 51: 1st contact surface; 52: 2nd contact surface (1st vertical surface); 53: 3rd contact surface; 54: 4th contact surface (2nd vertical surface); K: Center of the drive shaft; P: Center of the drive pin. DETAILED DESCRIPTION

[0018] Below, refer to Figures 1 to 7 The embodiments of the blade drive device and the imaging device of the present invention are described in detail. Figures 1 to 7 In the present invention, the same or equivalent components are marked with the same reference numerals and repeated descriptions are omitted. Figures 1 to 7The scale and dimensions of various components may be exaggerated, and some components may be omitted. In the following description, unless otherwise specified, terms such as "first" and "second" are used solely to distinguish components from one another and do not indicate a specific ranking or order. Furthermore, in this specification, "perpendicular to a line connecting the center of the second shaft and the center of the drive pin" means forming an angle of 90 degrees ± 5 degrees relative to the line connecting the center of the second shaft and the drive pin.

[0019] Figure 1 This is a perspective view showing a blade drive device 1 in one embodiment of the present invention. The blade drive device 1 in this embodiment is arranged between an imaging element (CCD image sensor or CMOS image sensor) and an imaging optical system such as a lens in an infrared camera or a video camera to realize a shutter function and a filter switching function. Figure 1 As shown, the blade drive device 1 includes a base 10, a cover 20 covering the base 10, and a blade member 30 disposed in a space formed between the base 10 and the cover 20. The cover 20 is fixed to the base 10 by screws 22. An opening 24 is formed in the cover 20.

[0020] Figure 2 2 is an exploded perspective view of the components of the blade drive device 1 except the cover 20 and the screw 22. Figure 2 As shown, a recess 12 is formed on the +Z direction side of the base 10, and a rectangular opening 14 for exposing the imaging element is formed in the recess 12. The imaging element is arranged on the surface where the image is formed by the light transmitted through the opening 14. In addition, a blade shaft 16 (first shaft) and a drive shaft 18 (second shaft) extending in the +Z direction are formed in the recess 12. The blade component 30 and an actuator 40 (drive unit) that drives the blade component 30 and rotates the blade component 30 are housed in the recess 12.

[0021] The blade member 30 is a plate-shaped member having a base 34 formed with a shaft hole 32 through which the blade shaft 16 is inserted, and a rectangular shielding portion 36 capable of closing the opening 14 of the base 10 (and the opening 24 of the cover 20). A cam hole 38 is formed in the base 34 of the blade member 30, adjacent to the shaft hole 32. The blade member 30 rotates about the blade shaft 16 inserted through the shaft hole 32, thereby rotating between a closed position, in which the opening 14 of the base 10 is closed, and an open position, in which the opening 14 is released.

[0022] The actuator 40 includes a yoke 41 made of a magnetic body, a coil base 43 on which a coil 42 wound around the yoke 41 is mounted, and a rotating member 44 that can rotate around the drive shaft 18 of the base 10. The coil base 43 is provided with a terminal 45 electrically connected to the coil 42. Figure 1 As shown, the terminal 45 protrudes from the base 10 toward the −Z direction side and is connected to an external control circuit.

[0023] The rotating member 44 includes a rotor magnet 46 rotatably mounted on the drive shaft 18 of the base 10 and a drive rod 47 connected to the rotor magnet 46. A cylindrical drive pin 48 extending in the +Z direction is provided at the tip of the drive rod 47. The outer diameter of the drive pin 48 is slightly smaller than the minimum width of the cam hole 38 of the blade member 30. The drive pin 48 is inserted into the cam hole 38 of the blade member 30 and can move within the cam hole 38 while engaging with the cam hole 38 of the blade member 30.

[0024] The yoke 41 in this embodiment is thin and flat in the Z direction, and has a U-shape including two arms 41A and 41B. The coil 42 is wound around one arm 41A. The rotor magnet 46 is arranged between the arms 41A and 41B of the yoke 41, and is composed of magnets having different magnetic poles along the circumferential direction. The yoke 41 is arranged in a manner to apply a magnetic effect to the rotor magnet 46. Therefore, when current is passed through the coil 42 via the terminal 45, the arms 41A and 41B of the yoke 41 are magnetized (magnetized) to opposite magnetic poles to each other, and the rotor magnet 46 and the drive rod 47 are rotated around the drive shaft 18 of the base 10 by the attraction of the magnetic force of the arms 41A and 41B. As described above, the drive pin 48 of the drive rod 47 engages with the cam hole 38 of the blade part 30, so that as the drive rod 47 rotates, the blade part 30 rotates around the blade shaft 16 of the base 10.

[0025] Figure 3 2 is a front view schematically showing a state in which the blade member 30 is located in a closed position. Figure 3 As shown, when the blade member 30 is in the closed position, the blade member 30 closes the opening 14 of the base 10. In this state, a current is passed through the coil 42 of the actuator 40 in one direction. When the arms 41A and 41B of the yoke 41 are magnetized and become magnetic, the magnetic poles of the rotor magnet 46 are attracted by the opposite magnetic poles of the arms 41A and 41B of the yoke 41, respectively, causing the rotor magnet 46 and the drive rod 47 to rotate clockwise. Moreover, by engaging the drive pin 48 of the drive rod 47 with the cam hole 38 of the blade member 30, the blade member 30 rotates as the drive rod 47 rotates. Figure 4As shown, the blade member 30 rotates counterclockwise around the blade shaft 16 until the side 34A of the base 34 of the blade member 30 abuts the stopper 11 of the base 10, and finally reaches the open position of the opening 14 of the base 10.

[0026] In addition, Figure 4 In the state shown, when current is passed through the coil 42 of the actuator 40 in the opposite direction to that described above, the arms 41A and 41B of the yoke 41 are magnetized and become magnetic. The magnetic poles of the rotor magnet 46 are attracted by the opposite magnetic poles of the arms 41A and 41B of the yoke 41, respectively, causing the rotor magnet 46 and the drive rod 47 to rotate counterclockwise. Then, the drive pin 48 of the drive rod 47 engages with the cam hole 38 of the blade member 30, causing the blade member 30 to rotate clockwise around the blade shaft 16 of the base 10 as the drive rod 47 rotates. Figure 3 As shown, the blade member 30 rotates clockwise around the blade shaft 16 until the side surface 34B of the base 34 of the blade member 30 abuts against the stopper 13 of the base 10 , and finally reaches the closed position to close the opening 14 of the base 10 .

[0027] Thus, the actuator 40 is configured such that, upon receiving power via the terminal 45, the rotor magnet 46 and the drive rod 47 rotate, and the drive pin 48 engages with the cam hole 38 of the blade member 30, thereby driving the blade member 30 to rotate between the closed position and the open position. Hereinafter, the position of the drive pin 48 when the blade member 30 is in the closed position is referred to as the first rotational position, and the position of the drive pin 48 when the blade member 30 is in the open position is referred to as the second rotational position.

[0028] In this embodiment, the shape of the yoke 41 and the arrangement of the rotor magnet 46 are adjusted so that the rotor magnet 46 is attracted to the yoke 41 by the magnetic force of the rotor magnet 46 when no current is supplied to the coil 42 of the actuator 40. Specifically, Figure 3 In the state shown, even if the current is stopped from being supplied to the coil 42, the magnetic force given to the yoke 41 by the rotor magnet 46 can be used to maintain the position of the rotor magnet 46, thereby maintaining the blade member 30 in the closed position. Figure 4 In the illustrated state, even if the current supply to the coil 42 is stopped, the rotor magnet 46 can be held in position by the magnetic force applied to the yoke 41 by the rotor magnet 46 , thereby holding the vane member 30 in the open position.

[0029] Thus, by adjusting the shape of the yoke 41 and the arrangement of the rotor magnet 46, the blade member 30 can be maintained in the open or closed position when no current is supplied to the coil 42. However, if a significant impact is applied to the blade drive device 1 due to a drop or vibration, it is considered that the blade member 30 may rotate from the open or closed position independently of the rotational drive of the actuator 40. The blade drive device 1 in this embodiment has a structure that can suppress the blade member 30 from rotating from the open or closed position independently of the rotational drive of the actuator 40 even in the event of such a significant impact. This structure is described below.

[0030] Figure 5 yes Figure 3 FIG. 3 is a partial enlarged view of the blade member 30 shown in FIG. Figure 5 As shown, the cam hole 38 of the blade part 30 is defined by multiple surfaces, in particular, including: a first contact surface 51, which contacts the drive pin 48 located at the first rotation position; a second contact surface 52, which contacts the drive pin 48 when the blade part 30 is about to rotate from the closed position to the open position when the drive pin 48 is located at the first rotation position; a third contact surface 53, which contacts the drive pin 48 located at the second rotation position; and a fourth contact surface 54, which contacts the drive pin 48 when the blade part 30 is about to rotate from the open position to the closed position when the drive pin 48 is located at the second rotation position.

[0031] Figure 6 yes Figure 3 The blade member 30 and the rotating member 44 are shown in a partially enlarged view. Figure 6 In the state shown, as described above, the blade member 30 is in the closed position, and the drive pin 48 in the cam hole 38 of the blade member 30 is in the first rotation position. At this time, the drive pin 48 contacts the first contact surface 51 of the cam hole 38, and a small gap is formed between the drive pin 48 and the second contact surface 52. When a large impact is applied to the blade member 30 in this state, for example, due to falling or vibration, the blade member 30 tends to rotate counterclockwise around the blade shaft 16 (the side surface 34B of the blade member 30 contacts the stopper 13 of the base 10, so that the blade member 30 cannot rotate clockwise (refer to Figure 3)), but at this time, the second contact surface 52 of the cam hole 38 contacts the drive pin 48. The second contact surface 52 extends in a direction D1 perpendicular to the line L1 connecting the center K of the drive shaft 18 and the center P of the drive pin 48. Therefore, when the blade member 30 attempts to rotate counterclockwise about the blade shaft 16, even if the second contact surface 52 of the cam hole 38 presses the drive pin 48, the drive rod 47 is pressed toward the drive shaft 18, so that the rotating member 44 is not easily rotated about the drive shaft 18. Therefore, the counterclockwise rotation of the blade member 30 that is unrelated to the rotational drive of the actuator 40 is suppressed.

[0032] On the other hand, Figure 6 In the state shown, in the cam hole 38 of the blade member 30, a space S1 is ensured on the clockwise side of the drive pin 48 with the drive shaft 18 as the center, and the drive pin 48 can be moved from Figure 6 The first rotational position shown rotates toward the second rotational position (clockwise). Therefore, as described above, if the actuator 40 is driven, the rotating member 44 can be rotated around the drive shaft 18, and the driving pin 48 can be moved from the first rotational position to the second rotational position and the blade member 30 can be moved to the closed position.

[0033] Figure 7 yes Figure 4 The blade member 30 and the rotating member 44 are shown in a partially enlarged view. Figure 7 In the state shown, as described above, the blade member 30 is in the open position, and the drive pin 48 in the cam hole 38 of the blade member 30 is in the second rotation position. At this time, the drive pin 48 contacts the third contact surface 53 of the cam hole 38, and a small gap is formed between the drive pin 48 and the fourth contact surface 54. When a large impact is applied to the blade member 30 in this state, for example, due to falling or vibration, the blade member 30 tends to rotate clockwise around the blade shaft 16 (the side surface 34A of the blade member 30 contacts the stopper 11 of the base 10, so that the blade member 30 cannot rotate clockwise (refer to Figure 4 )), but at this time, the fourth contact surface 54 of the cam hole 38 contacts the drive pin 48. The fourth contact surface 54 extends in a direction D2 perpendicular to the line L2 connecting the center K of the drive shaft 18 and the center P of the drive pin 48. Therefore, when the blade member 30 attempts to rotate clockwise about the blade shaft 16, even if the fourth contact surface 54 of the cam hole 38 presses the drive pin 48, the drive rod 47 is pressed toward the drive shaft 18, so that the rotating member 44 is not easily rotated about the drive shaft 18. Therefore, the clockwise rotation of the blade member 30 that is unrelated to the rotational drive of the actuator 40 is suppressed.

[0034] On the other hand, Figure 7In the state shown, in the cam hole 38 of the blade member 30, a space S2 is ensured on the counterclockwise side of the drive pin 48 with the drive shaft 18 as the center, and the drive pin 48 can be moved from the cam hole 38 to the drive pin 48. Figure 7 The second rotational position shown rotates toward the first rotational position (counterclockwise). Therefore, as described above, if the actuator 40 is driven, the rotating member 44 can be rotated around the drive shaft 18, and the driving pin 48 can be moved from the second rotational position to the first rotational position and the blade member 30 can be moved to the open position.

[0035] Thus, according to this embodiment, even if a large impact is applied to the blade member 30, when the drive pin 48 is located Figure 6 When the blade part 30 is in the first rotation position and is about to rotate from the closed position to the open position, the second contact surface 52 (first vertical surface) perpendicular to the line L1 connecting the center K of the drive shaft 18 and the center P of the drive pin 48 contacts the drive pin 48. Therefore, even if the second contact surface 52 of the cam hole 38 presses the drive pin 48, the drive rod 47 of the rotating part 44 is pressed in the direction toward the drive shaft 18. Therefore, it is not easy for the rotating part 44 to rotate around the drive shaft 18. Therefore, the counterclockwise rotation of the blade part 30 that is not related to the rotation drive of the actuator 40 is suppressed. In addition, when the blade part 30 is in the Figure 6 When the actuator 40 is in the closed position, a space S1 is ensured on the clockwise side of the drive pin 48 located at the first rotation position, thereby allowing the drive pin 48 to rotate from the first rotation position to the second rotation position. Therefore, when the actuator 40 is driven, the drive pin 48 can be moved from the first rotation position to the second rotation position, thereby moving the blade member 30 to the open position.

[0036] Likewise, even if a large impact is applied to the blade member 30, when the drive pin 48 is located Figure 7 When the blade part 30 is in the second rotation position and is about to rotate from the open position to the closed position, the fourth contact surface 54 (second vertical surface) perpendicular to the line L2 connecting the center K of the drive shaft 18 and the center P of the drive pin 48 contacts the drive pin 48. Therefore, even if the fourth contact surface 54 of the cam hole 38 presses the drive pin 48, the drive rod 47 of the rotating part 44 is pressed in the direction toward the drive shaft 18. Therefore, it is not easy for the rotating part 44 to rotate around the drive shaft 18. Therefore, the clockwise rotation of the blade part 30 that is not related to the rotation drive of the actuator 40 is suppressed. In addition, when the blade part 30 is in the Figure 7 When the actuator 40 is in the closed position, a space S2 is ensured on the counterclockwise side of the driving pin 48 located at the second rotational position, thereby allowing the driving pin 48 to rotate from the second rotational position toward the first rotational position. Therefore, when the actuator 40 is driven, the driving pin 48 can be moved from the second rotational position to the first rotational position, thereby moving the blade member 30 to the closed position.

[0037] In the present embodiment, the rotation of the blade member 30 that is unrelated to the rotational drive of the actuator 40 is suppressed in both the closed position and the open position of the blade member 30. However, the rotation of the blade member 30 that is unrelated to the rotational drive of the actuator 40 may be suppressed only in either the closed position or the open position of the blade member 30. In short, it is preferable that the rotation of the blade member 30 that is unrelated to the rotational drive of the actuator 40 is suppressed at a position where the torque applied by gravity to the blade member 30 becomes relatively large. That is, if it is assumed that gravity acts in the -Y direction, the torque applied by gravity to the blade member 30 in the closed position is greater than the torque applied by gravity to the blade member 30 in the open position. Therefore, it is preferable to provide the above-mentioned rotation suppression mechanism for the blade member 30 at least in the closed position of the blade member 30. For the same reason, when gravity acts in the -X direction, it is preferable to provide the above-mentioned rotation suppression mechanism for the blade member 30 at least in the open position of the blade member 30.

[0038] As described above, the blade drive device of the present invention can have the following configuration.

[0039]

Structure 1

[0040] A blade drive device comprising: a base provided with an opening; a blade member rotatable about a first axis between a closed position for closing the opening and an open position for opening the opening, the blade member being provided with a cam hole; and a driving portion driving the blade member to rotate the blade member between the closed position and the open position, the driving portion including a rotating member rotatable about a second axis, the rotating member having a driving pin that engages with the cam hole of the blade member while rotating between a first rotation position corresponding to the closed position of the blade member and a first rotation position corresponding to the open position. The cam hole of the blade part is configured to allow the driving pin to rotate from the first rotation position toward the second rotation position or from the second rotation position toward the first rotation position when the blade part is located in the closed position or the open position, and when the blade part rotates from the closed position to the open position or from the open position to the closed position with the driving pin located in the first rotation position or the second rotation position, a first vertical plane perpendicular to a line connecting the center of the second shaft and the center of the driving pin contacts the driving pin.

[0041]

Structure 2

[0042] The blade drive device according to Structure 1, wherein a moment applied by gravity to the blade member in the closed position or the open position is greater than a moment applied by gravity to the blade member in the open position or the closed position.

[0043]

Structure 3

[0044] A blade drive device according to structure 1 or 2, wherein the rotating component of the drive unit includes a rotor magnet having different magnetic poles along the circumferential direction and being mounted on the base in a manner capable of rotating about the second axis, and the drive unit further includes: a yoke that applies a magnetic action to the rotor magnet; and a coil that is wound around a portion of the yoke.

[0045]

Structure 4

[0046] A blade drive device according to any one of structures 1 to 3, wherein the cam hole of the blade part allows the drive pin to rotate from the second rotation position toward the first rotation position or from the first rotation position toward the second rotation position when the blade part is located in the open position or the closed position, and when the blade part rotates from the open position to the closed position or from the closed position to the open position with the drive pin located in the second rotation position or the first rotation position, a second vertical surface perpendicular to the line connecting the center of the second shaft and the center of the drive pin contacts the drive pin.

[0047] Furthermore, the imaging device of the present invention can have the following configuration.

[0048]

Structure 5

[0049] An imaging device comprising: the blade drive device according to any one of structures 1 to 4; and an imaging element arranged on a surface where an image is formed of light transmitted through the opening of the base of the blade drive device.

[0050] While preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can, of course, be implemented in various different forms within the scope of the technical concept.

Claims

1. A blade drive device comprising: a base provided with an opening; a blade member rotatable about a first axis between a closed position for closing the opening and an open position for opening the opening, the blade member being provided with a cam hole; as well as a driving portion that drives the blade member to rotate the blade member between the closed position and the open position, The driving portion includes a rotating member that is rotatable about a second axis and has a driving pin that moves between a first rotation position corresponding to the closed position of the blade member and a second rotation position corresponding to the open position while engaging with the cam hole of the blade member. The cam hole of the blade part allows the driving pin to rotate from the first rotation position toward the second rotation position or from the second rotation position toward the first rotation position when the blade part is located in the closed position or the open position, and when the blade part rotates from the closed position to the open position or from the open position to the closed position with the driving pin located in the first rotation position or the second rotation position, a first vertical plane perpendicular to a line connecting the center of the second shaft and the center of the driving pin contacts the driving pin.

2. The blade drive device according to claim 1, wherein: The moment exerted by gravity on the blade member in the closed position or the open position is greater than the moment exerted by gravity on the blade member in the open position or the closed position.

3. The blade driving device according to claim 1, wherein: The rotating member of the driving unit includes a rotor magnet having different magnetic poles along the circumferential direction, and the rotor magnet is mounted on the base so as to be rotatable about the second axis. The driving unit further comprises: a yoke that applies a magnetic effect to the rotor magnet; and A coil is wound around a portion of the yoke.

4. The blade driving device according to claim 1, wherein: The cam hole of the blade part allows the driving pin to rotate from the second rotation position toward the first rotation position or from the first rotation position toward the second rotation position when the blade part is located in the open position or the closed position, and when the blade part rotates from the open position to the closed position or from the closed position to the open position with the driving pin located in the second rotation position or the first rotation position, a second vertical plane perpendicular to the line connecting the center of the second shaft and the center of the driving pin contacts the driving pin.

5. A camera device, wherein: The camera device has: The blade drive device according to any one of claims 1 to 4; as well as An imaging element is arranged on a surface where an image is formed of light transmitted through the opening of the base of the blade driving device.

Images