JP2006284641A - Blade drive unit for camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent erroneous operation of barrier blades due to impact or the like in a drive unit for the barrier blades, etc. <P>SOLUTION: The blade drive unit includes: a substrate 10 having an aperture 10a; the pair of barrier blades 20 supported on the substrate 10 so as to freely move between a position that faces the aperture 10a and a retracting position that is apart from the aperture 10a; a stopper 30 disposed on the substrate in order to position the barrier blade 20 into the retracting position that is apart from the aperture 10a; and an electromagnetic drive source 40 that drives the barrier blades 20. The stopper 30 is formed of one selected from a magnet and a ferromagnetic material. The pair of barrier blades 20 have attracting parts 21d and 22d formed of the other one selected from the magnet and the ferromagnetic material, in the end face area where each blade comes into contact with at least the stopper 30. This prevents free movement of the barrier blades 20 even in case where they receive impact force due to, for example, accidental fall of a camera. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a camera blade driving device that drives and positions a blade member such as a barrier blade, a shutter blade, or a diaphragm blade disposed in an opening of a digital camera or the like.

As a conventional camera blade driving device, a substrate having an opening for exposure, a position that is supported rotatably with respect to the substrate (closed position), and a retracted position that is out of the opening (open position) A pair of shutter blades moving between and a motor having a drive pin and a rotor inserted in a hole formed in the shutter blade and driving the shutter blade, and the pair of shutter blades are located at the retracted position A rotor is held at its angular position by a magnetic attraction force, that is, a detent torque, and a shutter blade is held at a retracted position (see, for example, Patent Document 1).
However, in the holding method using the detent torque of the rotor, the shutter blades may move to the closed position because the detent torque is relatively small when an impact force is applied from the outside by dropping the digital camera or the like. There is.

Further, as a conventional camera blade driving device, there are a substrate having an opening for exposure, a diaphragm position that is supported so as to be linearly reciprocable with respect to the substrate, and a retracted position that is out of the opening. A pair of aperture blades that move between them, a drive pin that is inserted into a hole formed in the aperture blades, a motor that has a rotor and drives the aperture blades, and a ferromagnetic plate that is affixed to each of the main surfaces of the pair of aperture blades , Equipped with a magnet that exerts a magnetic attraction force with a predetermined gap on the diaphragm blade affixed to the lid that covers the substrate, and urges the pair of diaphragm blades in one direction at all times. Is known (see, for example, Patent Document 2).
However, with this urging method, the diaphragm blade cannot be held at the position facing the opening or at the retracted position, and the ferromagnetic plate affixed to the diaphragm blade and the magnet affixed to the lid Since magnetic attractive forces are exerted on each other not in the end face of the blade but in the principal surface direction, the range covered by the magnetic attractive force is relatively wide, and there is a problem that the driving load when driving the diaphragm blade is increased.

JP 2001-75145 A JP 2000-314905 A

  The present invention has been made in view of the above circumstances, and the object of the present invention is to provide a blade member even if an impact force is applied due to dropping or the like while simplifying the structure and downsizing the apparatus. An object of the present invention is to provide a blade driving device for a camera that can be reliably held at a position facing the opening or a retracted position deviating from the opening.

A camera blade drive device according to the present invention includes a substrate having an opening, a blade member supported movably between a position desired for the opening relative to the substrate and a retracted position deviated from the opening, and the blade member A blade driving device for a camera comprising: a stopper provided on the substrate for positioning the lens at a position facing the opening or a retracted position; and an electromagnetic drive source for driving the blade member. The blade member is formed of one of the magnetic bodies, and the blade member has an attracting portion formed of the other of the magnet and the ferromagnetic body at least in an end face region in contact with the stopper.
According to this configuration, when the blade member is driven by the electromagnetic drive source and is in the position facing the opening or in the retracted position deviating from the opening, the blade member is positioned with the suction portion in contact with the stopper. The blade member is attracted to the stopper by the magnetic attractive force generated in the end face region of the blade member and is reliably held at the position facing the opening or the retracted position. Therefore, even if this device is mounted on a digital camera or the like and receives an impact force due to dropping or the like, the blade member does not move arbitrarily but is held in a predetermined position (for example, a state of standby for shooting) ) Can be secured.

In the above configuration, the blade member is supported so as to be swingable with respect to the support shaft provided on the substrate, and the suction portion formed on the blade member is disposed closer to the free end side away from the support shaft. A configuration can be employed.
According to this configuration, since the attracting portion is disposed near the free end side away from the swing fulcrum (support shaft) of the blade member, the torque due to the magnetic attractive force acting between the attracting portion and the stopper is large. Thus, the blade member can be held at the position facing the opening or the retracted position with a stronger holding force.

In the above configuration, the blade member is composed of a pair of blade members that are swingably supported with respect to the support shaft provided on the substrate, and the stopper is a pair of stoppers that contact and position the pair of blade members, respectively. Therefore, it is possible to adopt a configuration in which the pair of blade members are respectively formed with suction portions.
According to this configuration, the pair of blade members that exert an action such as opening and closing on the opening are positioned at the positions facing the opening by the magnetic attractive force generated between the corresponding stopper and each attracting part. It can be securely held in the retracted position.

In the above configuration, the blade member may be a barrier blade that opens and closes the opening, a shutter blade that opens and closes the opening, or a diaphragm blade that narrows the opening to a predetermined aperture.
According to this configuration, when the blade member is a barrier blade or a shutter blade, it is possible to prevent the barrier blade or the shutter blade from freely closing the opening when receiving an impact force or the like in a shooting standby state. When the blade member is a diaphragm blade, it is possible to prevent the diaphragm blade from squeezing the opening without permission when receiving an impact force or the like in a standby state for photographing.

The said structure WHEREIN: The adsorption | suction part can employ | adopt the structure embed | buried in the blade member and being integrally molded.
According to this configuration, since the suction portion is embedded in the blade member and integrally molded, compared to the case where the suction portion is retrofitted, manufacturing costs and component management costs can be reduced, and the overall cost of the apparatus can be reduced. Can do.

  According to the blade drive device for a camera having the above-described configuration, even when the device is mounted on a digital camera or the like and receives an impact force due to dropping or the like, the blade member faces the opening or is retracted away from the opening. It can be securely held in position. That is, a highly accurate operation that does not cause a malfunction with respect to an impact force or the like received by a drop or the like can be obtained while achieving simplification of the structure, downsizing of the apparatus, and the like.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the accompanying drawings.
1 to 5 show an embodiment of a camera blade driving device according to the present invention. FIG. 1 is a perspective view with a part of the device omitted, FIG. 2 is an exploded perspective view of the device, and FIG. Is a partial cross-sectional view showing the suction portion embedded in the blade member, FIG. 4 is a plan view showing a state where the blade member is in the retracted position removed from the opening portion, and FIG. 5 is a state where the blade member is in a desired position in the opening portion FIG.

  As shown in FIG. 1 and FIG. 2, the apparatus has a substrate 10 having a substantially rectangular opening 10a, a position supported so as to be swingable with respect to the substrate 10, and a retreat separated from the opening 10a. A pair of barrier blades 20 consisting of a first barrier blade 21 and a second barrier blade 22 as blade members supported movably between positions, and the barrier blade 20 are implanted in the substrate 10 so as to be positioned at the retracted position. A pair of stoppers 30, an electromagnetic drive source 40 that generates a rotational driving force for driving the barrier blades 20, a link member 50 that connects the electromagnetic drive source 40 and the barrier blades 20, a cover 60 that covers the barrier blades 20, and the like. I have.

  As shown in FIGS. 1 and 2, the substrate 10 is formed of a resin material so that the outline is substantially rectangular, and slides on a substantially rectangular opening 10 a opened in the center and a pair of barrier blades 20. A flat surface 10b to be moved, two support shafts 11 for swingably supporting the pair of barrier blades 20, a support shaft 12 for rotatably supporting the link member 50, and a fan-like shape passing through a drive pin 41 (to be described later) of the electromagnetic drive source 40. Through-hole 13, screw hole 14, and the like.

The pair of stoppers 30 are formed in a substantially cylindrical shape by permanent magnets, and as shown in FIG. 4, the first barrier blades 21 and the second barrier blades 22 are stopped at the retracted positions separated from the openings 10 a. Are implanted in the substrate 10.
That is, when the first barrier blade 21 and the second barrier blade 22 are moved to the retracted position removed from the opening 10a, the pair of stoppers 30 are closer to the free end side of the first barrier blade 21 and the second barrier blade 22. It abuts on the end face (attractors 21d and 22d described later) and stops, and further movement is restricted and held by a magnetic attractive force.

As shown in FIGS. 1, 2, 4, and 5, the pair of barrier blades 20 includes a first barrier blade 21 and a second barrier blade 22 formed of a resin material.
The first barrier blade 21 includes a circular hole 21a through which the support shaft 11 passes, a long hole 21b, a hemispherical protrusion 21c protruding from both surfaces, a suction portion 21d embedded so as to be exposed on the end surface on the free end side, and the like. Yes.
The second barrier blade 22 is exposed to a circular hole 22a through which the support shaft 11 passes, a pin 22b inserted into the long hole 21b of the first barrier blade 21, a projection 22c protruding from both sides in a hemispherical shape, and an end surface on the free end side. The suction part 22d buried in this way, the pin 22e connected to the link member 50, and the like are provided.
As shown in FIGS. 4 and 5, the first barrier blade 21 and the second barrier blade 22 are supported in a freely swingable manner through the support shaft 11 through the circular holes 21a and 22a, respectively. When the pin 22b is inserted into the long hole 21b and exerts a driving force on one barrier blade (here, the second barrier blade 22), the first barrier blade 21 and the second barrier blade 22 are interlocked to open and close. Is supposed to do.

  The protrusions 21c and 22c are provided on the free end side away from the support shaft 11 (swinging fulcrum) on the first barrier blade 21 and the second barrier blade 22, and the flat surface 10b of the substrate 10 and the cover 60, respectively. The first barrier blade 21 and the second barrier blade 22 are guided so as not to rattle between the position facing the opening 10a and the retracted position. . Thereby, the frictional force generated when the barrier blade 20 (the first barrier blade 21 and the second barrier blade 22) reciprocates is reduced, and a stable operation is obtained.

The adsorbing portions 21d and 22d are provided in the end face region that is closer to the free end side of the first barrier blade 21 and the second barrier blade 22 away from the support shaft 11 (substantially closer to the tip than the middle) and abuts against the stopper 30. It has been.
The adsorbing portions 21d and 22d are formed of a material made of a ferromagnetic material such as iron, and are embedded in the first barrier blade 21 and the second barrier blade 22 as shown in FIGS. 3 (a) to 3 (c). And is formed so that a part thereof is exposed to the end face region or is entirely covered.
Since the attracting portions 21d and 22d having the shape shown in FIG. 3A are exposed in the entire end face region, a strong magnetic attraction force can be obtained between the stoppers 30 and FIG. Since the adsorbing portions 21d and 22d having the shape shown in FIG. 3 are exposed to a part of the end surface region, a slightly weakened magnetic attractive force can be obtained between the adsorbing portions 21d and 22d.
Thus, a desired magnetic attraction force can be generated between the stopper 30 by appropriately selecting the exposure amount of the attracting portions 21d and 22d on the end face.
The adsorbing portions 21d and 22d having the shape shown in FIG. 3 (c) have a shape that is embedded (covered) by entering the distance A from the end face region, and therefore by appropriately adjusting the value of the distance A. The desired attractive force can be generated, and since the hard ferromagnetic material (adsorption portions 21d and 22d) does not directly contact the relatively brittle permanent magnet (stopper 30), the permanent magnet can be damaged. Can be prevented.

Further, since the adsorbing portions 21d and 22d are arranged on the free end side away from the swing fulcrum (support shaft 11) of the first barrier blade 21 and the second barrier vane 22, the adsorbing portions 21d and 22d and the stopper 30 are disposed. The torque due to the magnetic attractive force acting between the first barrier blade 21 and the second barrier blade 22 can be held in the retracted position with a stronger holding force.
Further, since the adsorbing portions 21d and 22d are embedded in the first barrier blade 21 and the second barrier blade 22 and are integrally molded, the bonding strength is increased compared to the case where they are separately formed and retrofitted. In addition, the number of parts that need to be managed in the manufacturing process can be reduced, and the manufacturing cost can be reduced.

  The electromagnetic drive source 40 is a moving magnet type motor, which is a rotor (not shown) that rotates within a predetermined angular range, a drive pin 41 that is formed integrally with the rotor, an excitation coil (not shown), a magnetic field. A yoke (not shown) that forms a path is provided, and is fixed to the substrate 10 with screws B or the like.

As shown in FIGS. 1, 2, 4, and 5, the link member 50 includes a circular hole 51 through which the support shaft 12 of the substrate 10 passes and a long hole 52 through which the drive pin 41 of the electromagnetic drive source 40 passes. A notch 53 or the like into which the pin 22e of the second barrier blade 22 is inserted is provided.
That is, when the drive pin 41 reciprocates through the through hole 13, the link member 50 swings about the support shaft 12 as a fulcrum, and the first barrier blade 21 and the second barrier via the pin 22 e connected to the notch 53. The blade 22 performs an opening / closing operation.

  The cover 60 is attached to the substrate 10 so as to cover the barrier blade 20, and as shown in FIG. 2, the substantially rectangular opening 60a and the barrier blade provided at a position corresponding to the opening 10a of the substrate 10. The inner wall surface 60b on which the projections 21c and 22c of the 20 slide, the hole 61 through which the screw B passes, the hole 62 into which the tip of the stopper 30 is fitted, the long hole 63 through which the tip of the drive pin 41 passes, and the long hole 64 through which the pin 22b passes. In addition, a plurality of positioning holes or escape holes are provided.

Next, the operation when this apparatus is mounted on a digital camera will be described with reference to FIGS.
First, in the storage state where the digital camera is not photographed, as shown in FIG. 5, the pair of barrier blades 20 (the first barrier blade 21 and the second barrier blade 22) are positioned at a position facing the opening 10a, and are opened. The portion 10a is closed and the internal lens optical system is protected. The electromagnetic drive source 40 generates a detent torque due to a magnetic attractive force in a non-energized state, restricts the drive pin 41 from moving, and holds the pair of barrier blades 40 at this position.

  From this state, when the operator turns on a switch for shooting standby, the electromagnetic drive source 40 is activated and the drive pin 41 is rotated by a predetermined angle, and the pair of barrier blades 20 are connected via the link member 50. As shown in FIG. 4, the (first barrier blade 21 and second barrier blade 22) move to the retracted position removed from the opening 10a.

  Then, the attracting portion 21d of the first barrier blade 21 abuts against one stopper 30 and is attracted by a magnetic attractive force, and the attracting portion 22d of the second barrier blade 22 abuts against the other stopper 30 to magnetically Adsorbed by suction force. Thereby, the 1st barrier blade | wing 21 and the 2nd barrier blade | wing 22 are reliably hold | maintained in this retracted position. Therefore, even if an impact force or the like is received from the outside in this state, the first barrier blade 21 and the second barrier blade 22 are held in the retracted position as they are without moving, and the photographing standby state is maintained. The

  In this embodiment, the adsorbing portions 21d and 22d are provided on both the first barrier blade 21 and the second barrier blade 22, but as long as both barrier blades 21 and 22 are held by magnetic attraction force, You may provide only. Further, the suction portions 21d and 22d of the first barrier blade 21 and the second barrier blade 22 are formed of a ferromagnetic material, and the stopper 30 is formed of a permanent magnet. Conversely, the suction portion is formed of a permanent magnet, and the stopper is It may be formed of a ferromagnetic material.

6 and 7 show another embodiment of a camera blade driving device according to the present invention, and a pair of shutter blades 20 comprising a first shutter blade 21 'and a second shutter blade 22' as blade members. Since it is basically the same as the above-described embodiment except that 'is adopted and part of the substrate is changed, the same components are denoted by the same reference numerals and the description thereof is omitted.
In this apparatus, the substrate 10 ′ is assembled after the partition plate 10 ″ that covers the link member 50 and has a guide 10 b ″ that slidably guides the pair of shutter blades 20 ′ is formed separately. It has become.

The pair of stoppers 30 'are formed in a substantially cylindrical shape by a ferromagnetic material such as iron, and as shown in FIG. 6, the first shutter blade 21' and the second shutter blade 22 'are separated from the opening 10a. The substrate 10 'is implanted so as to stop at the retracted position.
That is, the pair of stoppers 30 ′ are arranged so that the first shutter blade 21 ′ and the second shutter blade 22 ′ move when the first shutter blade 21 ′ and the second shutter blade 22 ′ move to the retracted position away from the opening 10 a. It is brought into contact with an end face (attraction portions 21d ', 22d' described later) near the free end and stopped, and further movement is restricted and held by a magnetic attractive force.

As shown in FIGS. 6 and 7, the pair of shutter blades 20 ′ includes a first shutter blade 21 ′ and a second shutter blade 22 ′ formed of a resin material.
The first shutter blade 21 ′ includes a circular hole 21 a, a long hole 21 b, and a suction portion 21 d ′ embedded so as to be exposed at the end face on the free end side.
The second shutter blade 22 'includes a circular hole 22a, a pin 22b, a projecting portion 22c' protruding in an arc shape, a suction portion 22d 'embedded so as to be exposed at the end surface on the free end side, a pin 22e, and the like. Yes.

  The adsorbing portions 21d 'and 22d' are formed of permanent magnets and are closer to the free ends of the first shutter blade 21 'and the second shutter blade 22' apart from the support shaft 11 (swinging fulcrum) (front end than approximately the middle). As shown in FIG. 3 (a) or FIG. 3 (b), it is embedded and integrally molded in the end face region that is in contact with the stopper 30 '.

  When this apparatus is mounted on a digital camera, when the first shutter blade 21 ′ and the second shutter blade 22 ′ are at the retracted position away from the opening 10 a, as in the above-described embodiment, the suction portions 21 d ′, Since 22d 'contacts each corresponding stopper 30' and is attracted by the magnetic attractive force, the first shutter blade 21 'and the second shutter blade 22' are reliably held in this retracted position. Therefore, even if an impact force or the like is received from the outside in this state, the first shutter blade 21 ′ and the second shutter blade 22 ′ are held in the retracted position as they are without moving and the shooting standby state is maintained. Maintained.

  In this embodiment, the suction portions 21d 'and 22d' are provided on both the first shutter blade 21 'and the second shutter blade 22'. However, both shutter blades 21 'and 22' are held by magnetic attraction. As long as it is possible, it may be provided only on one side. Further, the attracting portions 21d 'and 22d' of the first shutter blade 21 'and the second shutter blade 22' are formed of permanent magnets, and the stopper 30 'is formed of a ferromagnetic material. The stopper may be formed of a permanent magnet.

8 and 9 show still another embodiment of a camera blade driving device according to the present invention, in which a single diaphragm blade 20 ″ is adopted as a blade member and a part of the substrate is changed. Since it is basically the same as the above-described embodiment except for the above, the same components are denoted by the same reference numerals, and the description thereof is omitted.
In this apparatus, the substrate 10 ″ ″ includes a circular opening 10 a ″ ″, a support shaft 11, a through hole 13, other positioning holes, a relief hole, and the like.

  The pair of stoppers 30 ″ are formed of permanent magnets, and the aperture blade 20 ″ is moved away from the opening 10a ″ as shown in FIG. 8 and the opening 10a ′ as shown in FIG. It is integrally formed with the substrate 10 ″ ″ so as to stop at the position facing the ″.

The aperture blade 20 ″ is formed of a resin material, and as shown in FIGS. 8 and 9, a circular hole 20a ″ through which the support shaft 11 passes, a long hole 20b ″ through which the drive pin 41 passes, and a hemisphere A projection 20c ″ projecting from both sides in a shape, two suction portions 20d ″ embedded so as to be exposed at the end surface on the free end side, an aperture opening 20e ″ having a predetermined diameter, and the like.
The adsorbing portion 20d ″ is made of a ferromagnetic material such as iron, and is closer to the free end side of the diaphragm blade 20 ″ farther from the support shaft 11 (swinging fulcrum) (closer to the tip than approximately the middle). And in the end surface area | region which contact | abuts each stopper 30 '', as shown to Fig.3 (a) or FIG.3 (b), it embed | buries and is integrally molded.

  When this apparatus is mounted on a digital camera, as shown in FIG. 8, when the diaphragm blade 20 ″ is in the retracted position (non-throttle state) deviated from the opening 10a ″, one suction unit 20d ′ ′ Is in contact with the corresponding one of the stoppers 30 ″ and is attracted by the magnetic attraction force. On the other hand, as shown in FIG. 9, the aperture blade 20 ″ faces the opening 10a ″ (in the aperture state). In this case, the other attracting portion 20d ″ abuts against the corresponding other stopper 30 ″ and is attracted by the magnetic attractive force. Therefore, even if an impact force or the like is received from the outside in the non-throttle state or the throttling state, the diaphragm blade 20 ″ does not move without permission, but the retracted position or the opening deviated from the opening 10a ″. Each of them is securely held at the position facing the portion 10a ″, and the non-throttle state or the throttling state is maintained.

  In this embodiment, the attracting portion 20d ″ of the diaphragm blade 20 ″ is formed of a ferromagnetic material, and the stopper 30 ″ is formed of a permanent magnet. Conversely, the attracting portion is formed of a permanent magnet, and the stopper is It may be formed of a ferromagnetic material.

  In the above embodiment, as a blade member, a pair of barrier blades 20 (first barrier blade 21 and second barrier blade 22), a pair of shutter blades 20 ′ (first shutter blade 21 ′ and second shutter blade 22 ′). Although one diaphragm blade 20 ″ is shown, the present invention is not limited to this, but one barrier blade, one shutter blade, a pair or a plurality of diaphragm blades, and an ND filter blade, You may employ | adopt this invention in the structure provided with an infrared-light cut filter blade | wing.

  In the above embodiment, the case where the present invention is applied to the case where the blade member swings or rotates is shown, but the present invention is not limited to this, and the present invention is also applicable to a blade member that reciprocates linearly. Can do.

  In the above embodiment, the case where this apparatus is mounted on a digital camera has been described. However, the present invention is not limited to this, and the present invention is also applied to a silver salt film type camera and other cameras. Also good.

  As described above, the camera blade driving device according to the present invention reliably achieves the structure where the blade member faces the opening or the retracted position away from the opening while achieving simplification of the structure and size reduction of the device. Since it can be held, it can be mounted on a small, portable digital camera, etc., and it can be portable if it can receive a shocking force from the outside and cause the blade member to malfunction. It is useful not only for fixed cameras.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a camera blade driving device according to an embodiment of the present invention, with some components omitted. It is a disassembled perspective view of the apparatus shown in FIG. (A), (b), (c) is a fragmentary sectional view which shows the adsorption | suction part of the blade | wing member which makes a part of apparatus. It is a top view which shows the state which exists in a retracted position where a pair of barrier blade | wings removed from the opening part. It is a top view which shows the state which exists in the position which a pair of barrier blade | wing faces an opening part. FIG. 7 is a perspective view showing another embodiment of the camera blade driving device of the present invention, with some components omitted. It is a disassembled perspective view of the apparatus shown in FIG. FIG. 14 is a plan view showing still another embodiment of the camera blade driving device of the present invention and showing a state where the diaphragm blade is in a retracted position deviated from the opening. FIG. 9 is a plan view showing a state in which the aperture blade is in a position facing the opening in the apparatus shown in FIG. 8.

Explanation of symbols

10, 10 ′, 10 ″ ″ Substrate 10 ″ Partition plate (substrate)
10a, 10a '''' Opening 10b Flat surface 11, 12 Support shaft 13 Through hole 20 A pair of barrier blades (blade members)
21 1st barrier blade 22 2nd barrier blade 21c, 22c Protrusion 21d, 22d Adsorption part 20 'A pair of shutter blade (blade member)
21 '1st shutter blade | wing 22' 2nd shutter blade | wing 21d ', 22d' adsorption | suction part 20 '' aperture blade (blade member)
20c ″ Protrusion 20d ″ Adsorption part 30, 30 ′, 30 ″ A pair of stoppers 40 Electromagnetic drive source 41 Drive pin 50 Link member 60 Cover

Claims (5)

A substrate having an opening, a blade member supported movably between a position desired for the opening relative to the substrate and a retracted position outside the opening, and the blade member desired for the opening A camera blade drive device comprising: a stopper provided on the substrate for positioning at a position or a retracted position; and an electromagnetic drive source for driving the blade member,
The stopper is formed by one of a magnet and a ferromagnetic material,
The blade member has an attracting portion formed by the other of the magnet and the ferromagnetic material at least in an end surface region in contact with the stopper.
A blade driving device for a camera. The blade member is swingably supported with respect to a support shaft provided on the substrate,
The suction portion formed on the blade member is disposed closer to the free end side away from the support shaft.
The camera blade driving device according to claim 1. The blade member is composed of a pair of blade members supported so as to be swingable with respect to a support shaft provided on the substrate,
The stopper comprises a pair of stoppers that contact and position the pair of blade members,
The suction portions are formed on the pair of blade members, respectively.
The camera blade driving device according to claim 1, wherein the camera blade driving device is provided. The blade member is a barrier blade that opens and closes the opening, a shutter blade that opens and closes the opening, or a diaphragm blade that restricts the opening to a predetermined aperture.
4. The blade driving device for a camera according to claim 1, wherein The adsorption part is embedded in the blade member and integrally molded.
5. The blade driving device for a camera according to claim 1, wherein

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