JP2001083567A - Shutter for camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce height dimension while securing the ability of an electromagnetic actuator. SOLUTION: This shutter 1 is provided with a substrate 2 having an aperture for photographing 2a, light shielding blade members 3A and 3B opening and closing the aperture 2a and the electromagnetic actuators 4A and 4B driving the blade members 3A and 3B. The actuators 4A and 4B are provided with movable members 6 which are provided with a permanent magnet 13, whose one end parts are coupled to the blade members 3A and 3B through actuating pins 11 and whose other end parts are journaled so that they can be rocked, a yoke member 15 having an upper and a lower yokes 17 and 16 fitted to the substrate 2 and arranged so as to interpose the magnet 13 in an upper and a lower directions and coils 18a and 19a arranged at the yoke member 15 so as to be opposed to the magnets 13 and wound round in almost parallel with the substrate 2. Besides, they are provided with regulation parts P regulating the rocking areas of the pins 11 arranged at one end parts of the movable members 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera shutter having a light-shielding blade member for opening and blocking a photographing opening provided on a substrate.

[0002]

2. Description of the Related Art As a conventional camera shutter, for example, the one disclosed in Japanese Patent Application Laid-Open No. 57-100416 is known. The electromagnetically driven shutter device described in this publication includes a shutter base plate having an exposure window,
The shutter bottom plate is provided with an electromagnetic actuator. The electromagnetic actuator has a cylindrical permanent magnet fixed to a shutter base plate or a frame in the camera,
An iron core is fitted inside the permanent magnet. Also,
A blade drive shaft is rotatably supported by the frame, and the blade is connected to the blade drive shaft via a connecting portion and a blade drive arm. Further, a blade drive coil is fixed to the blade drive shaft. When the blade drive coil is energized, the blade drive shaft rotates, and the blade is driven accordingly.

[0003]

However, in the above prior art, the blade driving coil is wound around the cylindrical permanent magnet, and the frame is arranged outside the blade driving coil. As a result, the height dimension of the electromagnetic actuator becomes large. Here, reducing the size of the permanent magnet makes it possible to reduce the height of the electromagnetic actuator. However, the force for rotating the blade drive shaft, that is, the force of the electromagnetic actuator is reduced, which is not preferable.

An object of the present invention is to provide a camera shutter capable of reducing the height of the electromagnetic actuator while securing the power of the electromagnetic actuator.

[0005]

According to a first aspect of the present invention, there is provided a camera shutter comprising: a substrate provided with a photographing opening;
A light-shielding blade member for opening and blocking the photographing opening, and an electromagnetic actuator for driving the light-shielding blade member, the electromagnetic actuator having a permanent magnet, one end of which is connected to the light-shielding blade member via an operating pin. A yoke member having an upper yoke and a lower yoke attached to the substrate and arranged so as to sandwich the permanent magnet in the vertical direction, A coil provided substantially in parallel with the substrate and provided on the yoke member so as to confront the substrate, and a restricting portion for restricting a swing region of an operating pin provided at one end of the movable member. It is characterized by having.

In the camera shutter, when the coil is energized, an electromagnetic force is generated in a magnetic field formed by the permanent magnet, and the movable member swings by the electromagnetic force, whereby the light shielding blade member is driven. You. At this time, the force for swinging the movable member (the amount of force of the electromagnetic actuator) is determined by the size (volume) of the permanent magnet, and the force for moving the movable member increases as the size of the permanent magnet increases. Here, even if the thickness of the permanent magnet is reduced, if the size of the permanent magnet in the lateral direction is increased, the volume of the permanent magnet does not need to be reduced.
Therefore, by doing so, the height dimension of the electromagnetic actuator can be reduced without reducing the power of the electromagnetic actuator. Further, since the movable member is provided with the permanent magnet and the yoke member is provided with the coil, when the coil is energized, the movable member swings without moving the coil, thereby being connected to the coil. Disconnection of the lead wire is prevented. Such an electromagnetic actuator can be said to be extremely advantageous in that an optimal size for driving the light shielding blade member can be secured. Then, by restricting the swing region of the operating pin provided at one end of the movable member, the light-shielding blade member can be reliably opened and closed.

According to a second aspect of the present invention, there is provided a shutter for a camera, wherein the substrate has an elongated hole into which an operating pin is inserted.
It is preferable to arrange the restricting portion at at least one end in the longitudinal direction of the long hole. When such a configuration is adopted, one end of the movable member can be abutted against the regulating portion, and the swing of the movable member can be regulated directly.

[0008] In the camera shutter according to the third aspect, it is preferable that the regulating portion is formed by a buffer member. When such a configuration is adopted, even when one end of the movable member strikes the regulating portion at a high speed, the impact at the time of collision can be absorbed by the regulating portion, so that one end of the movable member is bounded by the regulating portion. However, a situation in which the light-shielding blade member is opened and exposure occurs does not occur, and the disadvantage that the shutter operation is affected can be avoided. Further, the impact on the movable member can be reduced, and the influence on the electromagnetic actuator can be reduced.

In the camera shutter according to the present invention, it is preferable that the swing of the permanent magnet is regulated by the width of the yoke member in the swing direction of the movable member. In such a case, a configuration is possible in which the swing of the movable member is regulated by the electromagnetic actuator itself.

[0010] In the camera shutter according to the fifth aspect, it is preferable that the permanent magnet is provided with a convex portion protruding toward the yoke member in the swinging direction of the movable member, as the restricting portion. When such a configuration is adopted, the swing of the movable member can be restricted by a simple design change of the permanent magnet.

In the camera shutter according to the present invention, it is preferable that a buffer member is provided on the inner wall surface of the yoke member as a restricting portion at a position where the convex portion abuts. When such a configuration is adopted, swinging of the movable member can be restricted by a simple design change of the yoke member. In addition, even when the convex portion hits the buffer member at high speed, the impact at the time of collision can be absorbed by the buffer member, so that the permanent magnet bounces at the regulating portion and the light-shielding blade member opens to cause exposure. Does not occur, and the disadvantage that the shutter operation is affected can be avoided. Further, it is possible to appropriately prevent the permanent magnet and the yoke member from being broken or chipped.

According to a seventh aspect of the present invention, there is provided a camera shutter according to the present invention, comprising: a substrate provided with a photographing opening; a light-shielding blade member for opening and blocking the photographing opening; and an electromagnetic actuator for driving the light-shielding blade member. The electromagnetic actuator has a coil portion having one end connected to the light-shielding blade member via an operating pin and the other end pivotally supported so as to swing the coil substantially parallel to the substrate. A movable member, a yoke member having an upper yoke and a lower yoke attached to the substrate and arranged so as to sandwich the coil portion in the vertical direction, and a permanent magnet fixed to the yoke member so as to face the coil portion. And a regulating portion for regulating a swing region of the operating pin provided at one end of the movable member.

In the camera shutter, when the coil of the coil portion is energized, an electromagnetic force is generated in a magnetic field formed by the yoke member and the permanent magnet, and the movable member swings due to the electromagnetic force. The light-shielding blade member is driven. At this time, the force for swinging the movable member (the amount of force of the electromagnetic actuator) is determined by the size (volume) of the permanent magnet, and the force for moving the movable member increases as the size of the permanent magnet increases. Here, even if the thickness of the permanent magnet is reduced,
By increasing the lateral dimension of the permanent magnet, the volume of the permanent magnet does not have to be reduced. Therefore, by doing so, without reducing the power of the electromagnetic actuator,
The height dimension of the electromagnetic actuator can be reduced. Such an electromagnetic actuator can be said to be extremely advantageous in that an optimal size for driving the light shielding blade member can be secured. Then, by restricting the swing region of the operating pin provided at one end of the movable member, the light-shielding blade member can be reliably opened and closed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a camera shutter according to the present invention will be described below with reference to the drawings.

First, a first embodiment of a camera shutter according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the focal plane shutter 1 has a substrate 2, and a substantially rectangular imaging opening 2 a is formed in the substrate 2. The photographing opening 2a is sequentially opened and shielded by a first blade group 3A and a second blade group 3B as light shielding blade members arranged on the back side of the substrate 2. This first
The blade group 3A and the second blade group 3B are driven by electromagnetic actuators 4A and 4B via drive arms 5A and 5B, respectively. These electromagnetic actuators 4A and 4B
It is arranged side by side on one of the four sides forming the imaging opening 2 a on the substrate 2, whereby the width of the substrate 2 (the size in the horizontal direction as viewed in FIG. 1) can be reduced.

Such an electromagnetic actuator 4A, 4B
2 to 4 are shown in FIGS. Since the structures of the electromagnetic actuators 4A and 4B are exactly the same, only the structure of the electromagnetic actuator 4A will be described below.

The electromagnetic actuator 4A has a movable member 6, and the movable member 6 has a movable frame 8 which can swing around a shaft portion 7 erected at one end of the substrate 2. I have. The movable frame 8 has a connecting portion 9 having a rectangular cross section extending in one direction, and an operating portion 10
Is provided. An operating pin 11 is provided at the tip of the operating section 10.
Blade group 3A penetrating through an arc-shaped elongated hole S formed in
5A.

The other end of the connecting portion 9 has a rotating shaft portion 1.
2 are provided. The rotary shaft 12 has a through hole 1
2a is formed, and the shaft 7 is inserted into the through hole 12a, whereby the movable frame 8 is pivotally supported by the shaft 7. When the shutter 1 (see FIG. 1) is installed in a camera (not shown), the upper end of the shaft 7 comes into contact with other members in the camera so that the movable frame 8 does not come off the shaft 7. Has become.

A plate-like permanent magnet 13 for forming a magnetic field is fixed to the movable frame 8. On the back surface 13a of the permanent magnet 13, a groove 14 having a rectangular cross section for positioning the movable frame is formed.
The movable frame 8 is fixed to the movable frame 8 with an adhesive or the like with the coupling portion 9 of the movable frame 8 inserted in the groove portion 14.
When the movable frame 8 and the permanent magnet 13 are joined, the non-adhesive surface 9 a of the joining portion 9 is
It is almost flush with 3a.

As described above, the movable member 6 is
And the permanent magnet 13, the movable member 6 can be manufactured easily and inexpensively. Also,
Since the coupling portion 9 of the movable frame 8 is inserted into the groove portion 14 of the permanent magnet 13 and coupled, the positioning of the movable frame 8 with respect to the permanent magnet 13 can be easily performed when the movable member 6 is manufactured. Can be combined.

Further, the permanent magnet 13 is formed thin enough to secure a size (volume) such that a magnetic force enough to move the movable member 6 smoothly can be obtained. As described above, a force for smoothly driving the movable member 6 can be obtained while making the permanent magnet 13 thin, so that the electromagnetic actuator 4A
It is possible to reduce the height of the electromagnetic actuator 4A while securing the desired force. The permanent magnet 13 is magnetized so as to have a polarity in the vertical direction.

The permanent magnet 13 of the movable member 6 as described above
Are covered by the yoke member 15. Yoke member 15
The lower yoke 16 is attached to the substrate 2 and has a bottom plate portion 16a formed in a substantially circular arc shape, and is connected to the upper end of the lower yoke 16 to have a substantially circular arc shape similar to the bottom plate portion 16a. And a plate-like upper yoke 17 formed in The permanent magnet 13 is vertically sandwiched between the bottom yoke 16 of the lower yoke 16 and the upper yoke 17. here,
The reason why the bottom plate 16a and the upper yoke 17 of the lower yoke 16 are formed in a substantially arc shape is that the permanent magnet 13 is always covered by the yoke member 15 when the movable member 6 swings.

A pair of upper and lower first coils 18a, 18b wound substantially parallel to the substrate 2 and facing each other are provided on the upper surface of the bottom plate portion 16a of the lower yoke 16 and the lower surface of the upper yoke 17.
A pair of upper and lower second coils 19a and 19b are arranged side by side in the swinging direction of the movable member 6 so as to sandwich the permanent magnet 13. A current supply source (not shown) is connected to these coils 18a to 19b via lead wires (not shown). Then, the coils 18a to 19b are energized by the current supply source via the lead wires.

In such a configuration, for example, the permanent magnet 13 is magnetized such that the upper side has an N pole and the lower side has an S pole. Each of the coils 18a to 18a
A current in a predetermined direction is applied to the first coil 19b to generate an S pole above the first coil 18a and below the second coil 19b.
An N pole is generated below the coil 18b and above the second coil 19a. In this case, a repulsive force is generated between the permanent magnet 13 and the first coils 18a, 18b, and an attractive force is generated between the permanent magnet 13 and the second coils 19a, 19b. As a result, each movable member 6 swings clockwise about the shaft portion 7.

On the other hand, each coil 18a-
A current in the opposite direction to that described above is applied to the coils 19a to 19b.
When a pole opposite to the above is generated in 19b, an attractive force is generated between the permanent magnet 13 and the first coils 18a, 18b, and a repulsive force is generated between the permanent magnet 13 and the second coils 19a, 19b. As a result, each movable member 6 swings counterclockwise about the shaft portion 7. The movable member 6 smoothly moves in both directions due to the attraction and repulsion generated between the permanent magnet 13 and each of the coils 18a to 19b. At this time, each coil 18a
Since 19b are provided on the upper surface of the bottom plate portion 16a of the lower yoke 16 and the lower surface of the upper yoke 17, respectively, the power efficiency is good.

Here, in order to open and close the first blade group 3A accurately, it is necessary to accurately rotate the drive arm 5A of the first blade group 3A. For this purpose, a restricting portion P for restricting a swing region of the operating pin 11 moving in the elongated hole S is employed. As a specific measure, a buffer member 30 which is an example of the restriction portion P is provided at at least one end (in this case, both ends) in the longitudinal direction of the long hole S. Each of the cushioning members 30 is made of rubber or the like having excellent shock absorbing power, and is fitted and fixed in the elongated hole S of the substrate 2 or fixed to the substrate 2 via an adhesive or the like. As described above, the swing region of the operating pin 11 is determined by the interval between the pair of left and right buffer members 30, so that the rotation region of the drive arm 5A is accurately defined.

Even when the operating pin 11 strikes the cushioning member 30 at a high speed, the impact at the time of collision can be reduced.
0 can be absorbed, so that a situation in which the operating pin 11 bounces at the regulating portion P and the first blade group 3A opens to cause exposure does not occur, thereby avoiding the disadvantage that the shutter operation is affected. Can be. In addition, the impact given to the movable member 6 is reduced, and the electromagnetic actuator 4
A can be reduced.

In the focal plane shutter 1 configured as described above, in the state shown in FIG. 1 in which the first blade group 3A is in the shielding position and the second blade group 3B is in the open position, each of the electromagnetic actuators 4A, 4B Each coil 1
When energization is started in 8a to 19b, each movable member 6 swings clockwise around the shaft portion 7 by magnetic force. As a result, the first blade group 3A connected to the movable member 6 of the electromagnetic actuator 4A via the drive arm 5A acts as a leading blade and opens the photographing opening 2a from top to bottom as viewed in FIG. While traveling, the second blade group 3B, which is connected to the movable member 6 of the electromagnetic actuator 4B via the drive arm 5B, travels so as to act as a rear blade and cover the photographing opening 2a, completing the exposure. (Figure 5
reference).

Further, in the next photographing, the respective coils 18a to 19b of the electromagnetic actuator 4B are reversely energized. Then, the movable member 6 is moved by the magnetic force acting in the opposite direction.
Swings counterclockwise about the shaft 7, and the second blade group 3B runs as the leading blade while opening the shooting opening 2a from bottom to top as viewed in FIG. Subsequently, the coil 18a of the electromagnetic actuator 4A is provided with a predetermined time difference.
To 19b are reversely energized. Then, similarly to the above, the movable member 6 swings counterclockwise, and the first blade group 3A runs as the rear blade so as to cover the imaging opening 2a. Exposure is completed by the end of the traveling, and the state returns to the state shown in FIG.

Here, the permanent magnet 13 has a volume sufficient to smoothly move the movable member 6, and when the coils 18a to 19b are energized, the permanent magnet 13
The movable member 6 swings stably in both directions since an attractive force and a repulsive force are generated between the movable member 6 and the coils 18a to 19b.

The first blade group 3A and the second blade group 3B
However, since both of them can alternately play the role of the leading blade and the trailing blade, the conventional charging operation becomes unnecessary, and the photographing interval during continuous photographing can be shortened. Further, since the traveling patterns of the first blade group 3A and the second blade group 3B can be respectively controlled only by the electromagnetic actuators 4A and 4B, the control program of the electromagnetic actuators 4A and 4B is changed when double shading is required. Only with this, it is possible to obtain a double-light-shielded shutter without mechanical remodeling / change.

Next, the first blade group 3A and the second blade group 3B
Another embodiment of the regulating portion P employed for accurately opening and closing the actuator will be described, and the operating pin 1 described here will be described.
The first swing regulation regulates the swing of the permanent magnet 13A by the width of the yoke member 15 in the swing direction of the movable member 6A. Note that the same components as those in the above-described embodiment include:
The same reference numerals are given and the description is omitted.

In the electromagnetic actuator 32 as shown in FIGS. 6 and 7, the movable member 6A is attached to the permanent magnet 13A.
A pair of left and right convex portions 31 protruding toward each side wall 15a of the yoke member 15 in the swinging direction is integrally formed. Then, when each convex portion 31 collides with the side wall 15a, the swing of the movable member 6A is regulated, and the swing amount is appropriately changed by the projecting amount of the convex portion 31. In this manner, the swing regulation of the operating pin 11 is achieved by the electromagnetic actuator 32 itself.

The inner wall surface of each side wall 15a of the yoke member 15 is used as a regulating portion P.
The buffer member 33 is fixed at a position where the tip of the convex portion 31 contacts with an adhesive or the like. Each of the buffer members 33 is made of rubber or the like having excellent shock absorbing power, and the swing area of the permanent magnet 13A is determined by the interval between the pair of left and right buffer members 33. The region is precisely defined.

Even when the permanent magnet 13A strikes the buffer member 33 at a high speed, the shock at the time of collision can be absorbed by the buffer member 33, so that the permanent magnet 13A bounces and the first blade group 3A opens. It is possible to avoid such a problem that an exposure does not occur and the shutter operation is affected. Moreover, the permanent magnet 13
Loss such as cracking or chipping of the A and the yoke member 15 can be appropriately prevented.

It is to be noted that the restricting portion P includes the convex portion 31 and the cushioning member 3.
Not only the case in which the projections 31 are formed in cooperation with the projections 3 but also one of the projections 31 and the cushioning members 33.

Next, the moving coil type electromagnetic actuator 40 will be described. The same or equivalent components as those of the moving magnet type electromagnetic actuator 4A shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 8, the electromagnetic actuator 4
Numeral 0 has a movable member 43 whose one end is connected via the operating pin 11 of the first blade group 3A and whose other end is pivotally supported via the shaft 7. At the center of the movable member 43, a coil portion 42 in which the coil 41 is wound substantially parallel to the substrate 2 is provided. Further, four permanent magnets 44 are fixed to the inner wall surface of the yoke member 15 so as to sandwich the coil portion 42 vertically. And
The respective permanent magnets 44 are arranged so as to have mutually different polarities in up, down, left, and right directions.

In the electromagnetic actuator 40 having such a configuration, the electromagnetic actuator 4A shown in FIG.
In the same manner as described above, at least one end (in this case, both ends) of the elongated hole S in the longitudinal direction is provided with the buffer member 3 which is an example of the regulating portion P
0 is provided. Thus, even when the operating pin 11 hits the buffer member 30 at high speed, the shock at the time of collision can be absorbed by the buffer member 30.
A situation in which the shutter 1 is bound by the regulating portion P and the first blade group 3A is opened to cause exposure does not occur, and it is possible to avoid a disadvantage that the shutter operation is affected.

As shown in FIG. 9, in the moving coil type electromagnetic actuator 50, each side wall of the yoke member 15 in the swinging direction of the movable member 52 is provided on the side end of the plate-shaped coil frame 51a of the coil portion 51. A pair of left and right convex portions 53 projecting toward 15a is integrally formed. When the projections 53 collide with the side wall 15a, the swing of the movable member 52 is regulated.
It can be appropriately changed depending on the amount of protrusion of the projection 53.
As described above, the operating pin 1 is formed by the electromagnetic actuator 50 itself.
One swing regulation is achieved.

In each side wall 15a of the yoke member 15, the inner wall surface is used as a regulating portion P.
The buffer member 55 is fixed by an adhesive or the like at a position where the tip of the convex portion 53 contacts. Each of the buffer members 55 is made of rubber or the like having an excellent shock absorbing force, and the swing area of the coil portion 51 is determined by the interval between the pair of left and right buffer members 55. The motion region is precisely defined.

The camera shutter according to the present invention is not limited to the embodiment described above.
Needless to say, the lens shutter 56 may be used as shown in FIG.

[0043]

As described above, the camera shutter according to the present invention has the following effects.
That is, a substrate provided with an opening for photography, a light-shielding blade member for opening and blocking the opening for photography, and an electromagnetic actuator for driving the light-shielding blade member, the electromagnetic actuator having a permanent magnet, one end The movable member is connected to the light-shielding blade member via an operating pin, and the other end is pivotally supported so as to be swingable. The movable member is attached to the substrate and disposed so as to vertically sandwich the permanent magnet. A yoke member having a yoke and a lower yoke, a coil provided to the yoke member so as to face the permanent magnet, wound substantially parallel to the substrate, and further provided at one end of the movable member The provision of the restricting portion for restricting the swing region of the working pin allows the electromagnetic actuator to have a sufficient force and to reduce the height of the electromagnetic actuator.

Similarly, a camera shutter according to the present invention includes a substrate provided with a photographing opening, a light-shielding blade member for opening and blocking the photographing opening, and an electromagnetic actuator for driving the light-shielding blade member. The actuator is a movable member having a coil portion having one end connected to the light-shielding blade member via an operating pin and the other end pivotally supported so as to swing a coil substantially parallel to the substrate. A yoke member having an upper yoke and a lower yoke attached to the substrate and arranged so as to sandwich the coil portion in the vertical direction, and a permanent magnet fixed to the yoke member so as to face the coil portion. Further, by providing a regulating portion for regulating the swinging region of the operating pin provided at one end of the movable member, the height of the electromagnetic actuator can be secured while securing the force of the electromagnetic actuator. It can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a camera shutter according to the present invention.

FIG. 2 is an exploded perspective view showing a first embodiment of an electromagnetic actuator applied to the shutter shown in FIG.

FIG. 3 is a plan view showing a state where an upper yoke of the electromagnetic actuator shown in FIG. 2 is removed.

FIG. 4 is a front view of the electromagnetic actuator shown in FIG. 3;

FIG. 5 is a front view showing a state in which the blade group is operated by the electromagnetic actuator.

FIG. 6 is a plan view showing a second embodiment of the electromagnetic actuator.

FIG. 7 is a front view of the electromagnetic actuator shown in FIG. 6;

FIG. 8 is a plan view showing a third embodiment of the electromagnetic actuator.

FIG. 9 is a plan view showing a fourth embodiment of the electromagnetic actuator.

FIG. 10 is a plan view showing a lens shutter as another embodiment of the shutter according to the present invention.

[Explanation of symbols]

Reference numerals 1, 56: shutter, 2: substrate, 2a: photographing aperture, 3A: first blade group (light shielding blade member), 3B: second blade group (light shielding blade member), 4A, 4B, 32, 40, 50 ... Electromagnetic actuator, 6, 6A, 43, 52: movable member, 11: operating pin, 13, 13A, 44: permanent magnet, 15: yoke member, 16: lower yoke, 17: upper yoke, 18a, 18b, 19a, 19b , 41: coil, 30, 33, 55: buffer member, 31, 53: convex portion, 42, 51: coil portion, P: regulating portion, S: elongated hole.

Claims (7)

[Claims] 1. A substrate provided with a photographing opening, a light-shielding blade member for opening and blocking the photographing opening, and an electromagnetic actuator for driving the light-shielding blade member, wherein the electromagnetic actuator includes a permanent magnet. A movable member, one end of which is connected to the light-shielding blade member via an operating pin and the other end of which is swingably supported; and A yoke member having an upper yoke and a lower yoke arranged to be sandwiched in a direction, and a coil provided on the yoke member so as to face the permanent magnet and wound substantially parallel to the substrate. A shutter for a camera, further comprising a regulating portion provided at the one end of the movable member, for regulating a swing region of the operating pin. 2. The camera according to claim 1, wherein the substrate has an elongated hole into which the operating pin is inserted, and the restricting portion is arranged at at least one end in the longitudinal direction of the elongated hole. Shutter. 3. The camera shutter according to claim 2, wherein said restricting portion is formed by a buffer member. 4. The camera shutter according to claim 1, wherein the swing of the permanent magnet is regulated by the width of the yoke member in the swing direction of the movable member. 5. The permanent magnet according to claim 1, wherein:
5. A projection which protrudes toward the yoke member in a swing direction of the movable member.
The shutter for a camera according to the above. 6. The camera shutter according to claim 5, wherein a buffer member is provided on the inner wall surface of the yoke member as the restricting portion at a position where the convex portion contacts. 7. A substrate provided with a photographing opening, a light-shielding blade member for opening and blocking the photographing opening, and an electromagnetic actuator for driving the light-shielding blade member, wherein one end of the electromagnetic actuator has A movable member connected to the light-shielding blade member via an operating pin and having the other end pivotally supported pivotally, and having a coil portion having a coil wound substantially parallel to the substrate; A yoke member having an upper yoke and a lower yoke disposed so as to sandwich the coil portion in the vertical direction, and a permanent magnet fixed to the yoke member so as to face the coil portion. A camera shutter, further comprising a regulating portion provided at the one end of the movable member for regulating a swing region of the operating pin.