JP2003131287A - Electromagnetic actuator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic actuator which allows miniaturization of device, simplification thereof and reduction of the number of parts, etc., when plural electromagnetic actuators are fixed on a ground plate having an opening part for exposure. SOLUTION: When the plural electromagnetic actuators 20, 30 are arranged and fixed around the opening part 10a with respect to the ground plate 10 having the opening part 10a for exposure, one pressing member 40 is used, thereby, the plural electromagnetic actuators 20, 30 are pressed and fixed at the same time. Therefore, as compared with the case of employing attaching and fixing structures which are separately disposed, the reduction of the number of parts, the narrowing of arrangement space according to densification and the miniaturization of the device, etc., are achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic actuator device having a plurality of electromagnetic actuators fixed to a common base, and more particularly to driving shutter blades or diaphragm blades for a camera that opens or closes an aperture for exposure. And an electromagnetic actuator device in which a plurality of electromagnetic actuators are fixed to a common ground plate.

[0002]

2. Description of the Related Art As a conventional electromagnetic actuator for driving shutter blades or diaphragm blades, for example, as shown in FIG. 14, a moving magnet motor is known which reciprocates within a predetermined angular range by electromagnetic force. As shown in FIG. 14, this motor includes a rotor 1 having a permanent magnet,
A lower frame member 2 and an upper frame member 3 that rotatably support the rotor 1, a cylindrical yoke 4 that is attached around the upper frame member 3, and an upper frame member 3 are vertically assembled with the lower frame member 2 assembled. It is formed by a coil (not shown) wound in the direction. Then, the screw 5 is inserted into the mounting hole 2a ′ of the flange portion 2a provided on the lower frame member 2 and screwed into the mounting portion 6a formed on the main plate 6 as a base, so that the motor is driven by the main plate 6a. The structure is fixed to.

[0003]

By the way, since the motor as described above has a structure in which it is individually fixed through the flange portion 2a and the screw 5, it is particularly close to the opening 6b for exposure. When a plurality of motors are arranged and fixed, the mounting portions 6a are required individually, and the motors are also separated from each other, which causes a problem of increasing the size of the device.

Further, an electromagnetic actuator of a type different from the above-mentioned motor is also arranged together, such as an electromagnetic actuator (motor) of a type having a plate-shaped yoke formed in a substantially U shape and a rotor arranged therebetween. However, there is a problem in that the space around the opening 6b is not effectively utilized, and the size of the device is further increased.

The present invention has been made in view of the above points, and an object of the present invention is to provide a plurality of electromagnetic actuators for a common base, in particular, a main plate having an opening for exposure. When arranging and fixing, the electromagnetic actuators are integrated (integrated), the space occupied by each electromagnetic actuator is made as small as possible, and the entire device is downsized, the number of parts is reduced, and the cost is reduced. To provide.

[0006]

An electromagnetic actuator device of the present invention comprises a base, a plurality of electromagnetic actuators arranged at predetermined positions of the base, and fixing means for fixing the plurality of electromagnetic actuators to the base. In the above electromagnetic actuator device, the fixing means is characterized by having one pressing member that simultaneously presses a plurality of electromagnetic actuators toward the base, and a connecting means that connects the pressing member to the base. According to this configuration, by disposing the plurality of electromagnetic actuators on the base, pressing the pressing member from above, and simultaneously pressing the plurality of electromagnetic actuators, and connecting the pressing member to the base by the connecting means, The electromagnetic actuator is fixed at the same time. As described above, since a plurality of electromagnetic actuators can be fixed by one pressing member, the number of parts can be reduced and the width of the arrangement space can be reduced as compared with the case where individual mounting and fixing structures are adopted. Narrowing and downsizing of the device can be achieved.

In the above structure, the base is a base plate having an opening for exposure and supporting a blade that opens or closes or narrows the opening, and the plurality of electromagnetic actuators are arranged along the periphery of the opening to hold the presser foot. The member can be configured to be curved along the circumference of the opening. According to this configuration, a plurality of electromagnetic actuators can be arranged close to each other (collectively) around the exposure opening, and the shutter or diaphragm device can be downsized. The mounted camera can be miniaturized.

In the above structure, the connecting means includes a snap fit structure formed on the base and the pressing member.
Configuration can be adopted. With this configuration, the snap-fit structure can be integrally formed on the base and the pressing member, and the number of parts can be reduced, the management cost can be reduced, and the assembling work can be simplified and facilitated.

In the above structure, the plurality of electromagnetic actuators may include different types of electromagnetic actuators. According to this configuration, the arrangement space can be used more effectively and the device can be further downsized, as compared with the case where the mounting and fixing structures of the different types of electromagnetic actuators are used.

In the above structure, the base (or the ground plate) may have a positioning portion for positioning the electromagnetic actuator at a predetermined position. According to this configuration, in the assembling work, by using the positioning portion,
It is possible to position the electromagnetic actuator in advance at a predetermined position on the base, and then fix the electromagnetic actuator using a pressing member.
Therefore, the assembling work can be easily performed while performing the assembling with high accuracy.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5
1 shows an embodiment of an electromagnetic actuator device according to the present invention, FIG. 1 is a plan view of the device, FIG. 2 is a plan view showing an internal structure of the device, FIG. 3 is an exploded perspective view showing the electromagnetic actuator, FIG. 4 is a developed sectional view of the apparatus.

As shown in FIG. 1, this apparatus includes a base plate 10 as a base, an electromagnetic actuator 20 arranged at a predetermined position on the base plate 10, an electromagnetic actuator 30, and one pressing member 40 forming a part of a fixing means. Is equipped with. Here, the electromagnetic actuator 20 is used to drive the diaphragm blade S1 having a predetermined aperture, and the electromagnetic actuator 30 is used to drive the shutter blade S2.

The base plate 10 is, as shown in FIGS. 1 and 2,
The disk has a shape in which a part thereof is cut off, and has an opening 10a for exposure at a substantially central portion, and an electromagnetic actuator is provided around the opening 10a on the upper surface side thereof as shown in FIGS. Two
Two fitting holes 1 as positioning parts for positioning 0
1, a support shaft 12 as a positioning part for positioning the electromagnetic actuator 30, a fitting pin 13, a mounting groove 14, a snap hook 15 forming a part of a connecting means (fixing means), a hooked portion 16, and a mounting boss portion 17. Etc. are provided.

On the other hand, on the rear side (lower surface side) of the main plate 10, around the opening 10a, as shown in FIGS. 1 and 5, there are two support shafts 18 for rotatably supporting the diaphragm blade S1. Two support shafts 19 that rotatably support the shutter blades S2, stoppers (not shown) that limit the moving range of the shutter blades S2, stoppers (not shown) that limit the moving range of the diaphragm blades S1, and the like are provided. ing.

A cover plate 50 is provided on the rear side of the main plate 10.
Are arranged to face each other, and the snap hook 15 'and the screw 5
They are connected by 1 etc. A blade chamber W for rotatably accommodating the diaphragm blade S1 and the shutter blade S2 is defined between them.

The electromagnetic actuator 20 is a moving magnet motor that reciprocates within a predetermined angle range by electromagnetic force. As shown in FIGS. 3 and 5, the electromagnetic actuator 20 has a cylindrical outer contour and is magnetized to the N and S poles. 21 having a permanent magnet 21a and a drive pin 21b, a lower frame member 22 and an upper frame member 23 that rotatably support the rotor 21, a cylindrical yoke 24 attached around the upper frame member 23, and an upper frame member. 23 is formed by a coil 25 or the like that is wound in the up-down direction in a state in which 23 is assembled to the lower frame member 22.

As shown in FIGS. 3 and 5, the lower frame member 22 has two flanges 22 having a relatively narrow width and a flat upper surface.
a is formed, and the positioning pins 2 are formed on the lower surface of each a.
2b is formed. The two positioning pins 22b are
The base plate 10 is fitted in the fitting holes 11 as positioning portions.

The electromagnetic actuator 20 is the rotor 2
The upper frame member 23 is connected to and fixed to the lower frame member 22 in a state in which 1 is rotatably attached, the coil 25 is wound, and then the cylindrical yoke 24 is fitted, which can be handled as a module product. . Therefore, at the time of assembling, it is attached to the main plate 10 as a module product. Further, as described above, since the lower frame member 22 is not provided with the screw holes as in the conventional case, the width of the flange 22a can be narrowed, and the width and the size are reduced as a whole.

The electromagnetic actuator 30 is an electromagnetic actuator of a type different from the electromagnetic actuator 20 described above, and as shown in FIGS. 2 and 5, the first magnetic pole portion 31.
U-shaped upper yoke 3 having a and the second magnetic pole portion 31b
1, the first magnetic pole portion 32a, the second magnetic pole portion 32b, and the lower yoke 32 having the auxiliary magnetic pole piece 32c, the coil 33 wound around the upper yoke 31 and the lower yoke 32, the first magnetic pole portion 31a, It is formed by a rotor 34 and the like rotatably arranged between 32a and the second magnetic pole portions 31b and 32b.

As shown in FIGS. 2 and 5, the lower yoke 32 and the upper yoke 31 have fitting holes 32 'and 31', and the fitting pins 13 are fitted into the fitting holes 32 'and 31'. It is arranged while being positioned at a predetermined position of the main plate 10 so that the linear portion on the second magnetic pole portions 31b and 32b side is fitted into the mounting groove 14 so as to pass therethrough. The rotor 34 has a cylindrical outer contour and is magnetized to the N pole and the S pole.
By having a and a drive pin 34b and being attached so that the support shaft 12 is inserted through the center hole 34c, the base plate 10 is positioned at a predetermined position and is rotatably supported.

The electromagnetic actuator 20 and the electromagnetic actuator 30 are, as shown in FIG.
They are arranged around a and along the circumferential direction thereof and close to each other. By arranging in this manner, the space around the opening 10a is effectively utilized without waste, and both are gathered (integrated) near the center of the opening 10a, thereby reducing the size as a whole. .
Although the attachment boss 17 for connection is provided between the electromagnetic actuator 20 and the electromagnetic actuator 30 here, if the attachment boss 17 is omitted, the two can be arranged closer to each other. The device can be further miniaturized.

As shown in FIGS. 4 and 5, the pressing member 40 is formed so that its outer contour is curved along the circumferential direction around the opening 10a, and the cylindrical yoke 24 of the electromagnetic actuator 20 is fixed. A notch 41 that escapes, a notch 42 that escapes the coil 33 (and the bobbin) of the electromagnetic actuator 30, a through hole 43 that allows the support shaft 12 to pass therethrough, and a snap hook 44 that forms a part of the snap-fit structure are integrally formed. ing.

As shown in FIG. 5, the flange 2 of the electromagnetic actuator 20 is provided on the lower surface (inner surface) of the pressing member 40.
Pressing protrusion 45 for pressing 2a, electromagnetic actuator 3
A pressing convex portion 46 for pressing the upper yoke 31 (and the lower yoke 32) of 0 is formed. Also, the pressing member 40
A part of the snap-fit structure is formed on the outer edge portion on one end side of the snap hook 15 to be hooked on the snap hook 15.
Are integrally formed. Further, a through hole 48 into which a connecting screw 60 is inserted is formed at the other end side and the substantially central portion of the pressing member 40.

In the above construction, the snap hook 44 formed on the pressing member 40 and the hooked portion 16 formed on the main plate 10, and the hooked portion 4 formed on the pressing member 40.
7 and the snap hook 15 formed on the base plate 10 form a snap fit structure as a connecting means for connecting the pressing member 40 to the base plate 10. As described above, by adopting the snap fit structure, the assembling becomes easy.

Next, the procedure for assembling the main plate 10, the two electromagnetic actuators 20 and 30, and the holding member 40 in this apparatus will be described. First, as shown in FIG. 2, the electromagnetic actuator 20 and the electromagnetic actuator 30 are arranged at predetermined positions on the main plate 10. At this time, the electromagnetic actuator 20 operates the positioning pin 22b of the lower frame member 22.
By being fitted into the fitting hole (positioning portion) 11 of the main plate 10, it is positioned at a predetermined position with high accuracy. Further, in the electromagnetic actuator 30, the rotor 34 is externally fitted to the support shaft 12, and the fitting holes 31 of the upper yoke 31 and the lower yoke 32 are fitted.
′ And 32 ′ are externally fitted to the fitting pin (positioning portion) 13,
Furthermore, by fitting a part of it into the mounting groove 14,
It is positioned at a predetermined position with high accuracy.

Subsequently, the pressing member 40 is brought close to the two electromagnetic actuators 20 and 30 from above, so that the pressing protrusion 45 presses the upper surface of the flange 22a of the electromagnetic actuator 20, and the pressing convex portion 46 is electromagnetic. It is arranged so as to press the upper yoke 31 of the actuator 30, and the hooked portion 47 is hooked on the snap hook 15,
The snap hook 44 is hooked on the hooked portion 16. As a result, the pressing member 40 has two electromagnetic actuators 2
While pressing 0 and 30 simultaneously to fix,
Connected to.

Finally, the screw 60 is screwed into the mounting boss portion 17 through the through hole 48, so that the holding member 4 is pressed.
0 will be more reliably fastened to the main plate 10. still,
Although the screw 60 and the mounting boss portion 17 are used here, a snap-fit structure similar to the one described above can be used instead.

In the above device, since the two electromagnetic actuators 20 and 30 are fixed by the single holding member 40, the number of parts can be reduced as compared with the case where they are fixed to each other, and the electromagnetic actuator 20 itself is miniaturized. (Narrowing), so that the plurality of electromagnetic actuators 20 and 30 can be collectively arranged in the vicinity of the opening 10a. As a result, the overall size of the device can be reduced, and the cost can be reduced by reducing the number of parts.

6 to 9 show another embodiment of the electromagnetic actuator device according to the present invention. still,
The same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 6, this device includes a base plate 10 as a base and two electromagnetic actuators 2 of the same type arranged at predetermined positions of the base plate 10.
0, one electromagnetic actuator 30, one pressing member 40 ′ forming part of the fixing means, and the like. Here, the added electromagnetic actuator 20 is used to drive the diaphragm blades S1 ′ having different apertures.

As shown in FIG. 9, the base plate 10 has four fitting holes 11 and one electromagnetic actuator 30 as positioning parts for positioning the two electromagnetic actuators 20 around the opening 10a on the upper surface side thereof. There are provided a support shaft 12 as a positioning portion for positioning, a fitting pin 13, a mounting groove 14, two snap hooks 15 forming a part of the connecting means, a hooked portion 16, a mounting boss portion 17 and the like.

As shown in FIG. 7, the two electromagnetic actuators 20 and the one electromagnetic actuator 30 are arranged along the circumferential direction around the opening 10a and close to each other. By arranging in this way, the space around the opening 10a can be effectively used without waste, and each of the openings 10a can be effectively used.
By being integrated (accumulated) toward the center of a, the size is reduced as a whole.

Here, the mounting boss portion 17 for connection is provided between the two electromagnetic actuators 20 and between the one electromagnetic actuator 20 and the electromagnetic actuator 30, but this mounting boss portion 17 is used. If it is abolished and the above-mentioned snap-fit structure is adopted, the three electromagnetic actuators 20 and 30 can be arranged closer to each other, and the device can be further downsized.

As shown in FIG. 8, the pressing member 40 'is formed so that its outer contour is curved along the circumferential direction around the opening 10a, and the cylindrical yokes 24 of the two electromagnetic actuators 20 are connected to each other. Two notches 4 to escape
1, a notch 42 that escapes the coil 33 (and the bobbin) of one electromagnetic actuator 30, a through hole 43 through which the support shaft 12 passes, a snap hook 44 that forms a part of a snap fit structure, etc. are integrally formed. .

On the lower side surface (inner side surface) of the pressing member 40 ',
As shown in FIG. 9, four pressing protrusions 45 that press the flanges 22a of the two electromagnetic actuators 20 and a pressing protrusion 46 that presses the upper yoke 31 (and the lower yoke 32) of the electromagnetic actuator 30 are formed. . Further, a part of the snap fit structure is formed on the outer edge portions on both end sides of the pressing member 40 ', and the snap hook 15
Two hooked portions 47 that are hooked on are integrally formed. Further, two through holes 48 into which the connecting screws 60 are inserted are formed at the other end side and substantially the central portion of the pressing member 40 '.

In the above device, since the three electromagnetic actuators 20 and 30 are fixed by one pressing member 40 ', the number of parts can be reduced as compared with the case where they are fixed to each other, and the electromagnetic actuator 20 itself is small. Therefore, the plurality of electromagnetic actuators 20 and 30 can be collectively arranged in the vicinity of the opening 10a. As a result, the overall size of the device can be reduced, and the cost can be reduced by reducing the number of parts.

Also, during the assembling work, the use of the snap-fit structure, the positioning portion, etc. makes it possible to carry out the positioning with high precision and to easily assemble. In addition, the main plate 10, the three electromagnetic actuators 20, and
The procedure for assembling the pressing member 40 'and the pressing member 40' is basically the same as that of the above-described embodiment, and thus the description thereof is omitted here.

10 to 13 show still another embodiment of the electromagnetic actuator device according to the present invention. The same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 10, this device includes a main plate 10 as a base and a main plate 10
The electromagnetic actuator 30, the electromagnetic actuator 70, and one pressing member 40 ″ which is a part of the fixing means are arranged at predetermined positions.

As shown in FIGS. 11 and 13, the base plate 10 has a support shaft 12 as a positioning portion for positioning the electromagnetic actuator 30, a fitting pin 13, and a mounting member around the opening 10a on the upper surface side thereof. The groove 14, the fitting groove 11 ′ and the projection 11 ″ serving as a positioning portion for positioning the electromagnetic actuator 70, the snap hook 15 forming a part of the connecting means, the hooked portion 16, the mounting boss portion 17 and the like are provided. There is.

The electromagnetic actuator 70 is a step motor that is rotationally driven by step driving, and is an electromagnetic actuator of a type different from the electromagnetic actuators 30 and 20 described above. The electromagnetic actuator 70 is shown in FIG.
1 and FIG. 13, the first magnetic pole portion 71a and the second magnetic pole portion 71a
U-shaped yoke 71 having a magnetic pole portion 71b, first magnetic pole portion 7
U-shaped yoke 72 having 2a and the second magnetic pole portion 72b,
Yoke 71 and coil 7 wound around yoke 72
3, 74, the first magnetic pole portions 71a, 72a and the second magnetic pole portion 71
It is formed by a rotor 75 and the like rotatably arranged between the rotors b and 72b. And the gear 75 of the rotor 75
a meshes with the teeth formed on the outer periphery of the diaphragm blade S1 ″ to rotate the diaphragm blade S1 ″. still,
The rotor 75 is rotatably supported in advance by the bearing hole 49 of the pressing member 40 ″.

The electromagnetic actuator 30 and the electromagnetic actuator 70 are, as shown in FIG.
They are arranged around a and along the circumferential direction thereof and close to each other. By arranging in this manner, the space around the opening 10a is effectively utilized without waste, and both are gathered (integrated) near the center of the opening 10a, thereby reducing the size as a whole. .

Here, although the mounting boss portion 17 for connection is provided between the electromagnetic actuator 30 and the electromagnetic actuator 70, the mounting boss portion 17 is eliminated and the above snap-fit structure may be adopted. For example, the electromagnetic actuators 30 and 70 can be arranged closer to each other, and the device can be further downsized.

As shown in FIG. 12, the pressing member 40 ″ is formed so that its outer contour is curved along the circumferential direction around the opening 10a, and the coils 73, 74 (of the electromagnetic actuator 70 ( And a notch portion 41 ″ for escaping the bobbin), a notch portion 42 for escaping the coil 33 (and the bobbin) of the electromagnetic actuator 30, a through hole 43 for passing the support shaft 12, and a snap hook forming a part of the snap fit structure. 44, a bearing hole 49, etc. are integrally formed.

On the lower side surface (inner side surface) of the pressing member 40 ″, as shown in FIG. 13, a pressing protrusion 45 ′ for pressing the yokes 71 and 72 of the electromagnetic actuator 70, the upper yoke 31 (and the lower side of the electromagnetic actuator 30). Side yoke 3
A pressing convex portion 46 for pressing 2) is formed. Further, a hooked portion 47 that is hooked on the snap hook 15 and forms a part of a snap-fit structure is integrally formed on the outer edge portion on one end side of the pressing member 40 ″. Further, two through holes 48 into which the screws 60 for connection are inserted are formed at the other end side and the substantially central portion of the pressing member 40 ″.

In the above device, since the electromagnetic actuators 30 and 40 are fixed by the single pressing member 40 ″, the number of parts can be reduced as compared with the case where they are fixed to each, and therefore, the plurality of electromagnetic actuators 30 and 40 are reduced. 70
Can be collectively arranged in the vicinity of the opening 10a. As a result, the overall size of the device can be reduced, and the cost can be reduced by reducing the number of parts.

Also, during the assembling work, the use of the snap-fit structure, the positioning portion, etc. makes it possible to perform the positioning with high precision and to easily assemble. The main plate 10, electromagnetic actuators 30, 70, and
The procedure for assembling the pressing member 40 ″ is the same as that in the above-described embodiment, and thus the description thereof is omitted.

In the above embodiment, one pressing member 40, 40 ', 40 is attached to the main plate 10 as a base.
Two or three electromagnetic actuators are shown as the plurality of electromagnetic actuators fixed by ″, but it is not limited to this, and four or more electromagnetic actuators can be fixed by one pressing member. . Further, as a base, an electromagnetic actuator that drives a shutter blade or a diaphragm blade of a camera is supported, and the opening 10 for exposure is used.
Although the base plate 10 having a is shown, the base plate 10 is not limited to this, and other bases can be adopted. Furthermore, although three types of electromagnetic actuators are shown, the present invention is not limited to this, and the fixing structure of the present invention can be adopted when fixing other types of electromagnetic actuators.

[0047]

As described above, according to the electromagnetic actuator device of the present invention, when fixing a plurality of electromagnetic actuators to a predetermined position of the base, one pressing member for simultaneously pressing and fixing the plurality of electromagnetic actuators is provided. By providing them, the number of parts can be reduced, the arrangement space can be narrowed by integration, and the size of the device can be reduced as compared with the case where they are individually fixed. In particular, when fixing a plurality of electromagnetic actuators with a single pressing member to the base plate that supports the blades that open and close or squeeze the opening for exposure, combine the plurality of electromagnetic actuators around the opening. They can be arranged, and the shutter or diaphragm device can be downsized, and the camera in which the device is mounted can be downsized.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of an electromagnetic actuator device according to the present invention.

FIG. 2 is a plan view showing the inside of the device shown in FIG.

FIG. 3 is an exploded perspective view showing an electromagnetic actuator used in the device shown in FIG.

FIG. 4 is a plan view showing a holding member in the apparatus shown in FIG.

5 is a developed sectional view of the device shown in FIG. 1. FIG.

FIG. 6 is a plan view showing another embodiment of the electromagnetic actuator device according to the present invention.

FIG. 7 is a plan view showing the inside of the apparatus shown in FIG.

8 is a plan view showing a holding member in the apparatus shown in FIG.

9 is a developed sectional view of the apparatus shown in FIG.

FIG. 10 is a plan view showing still another embodiment of the electromagnetic actuator device according to the present invention.

11 is a plan view showing the inside of the device shown in FIG.

12 is a plan view showing a holding member in the device shown in FIG.

13 is a developed sectional view of the device shown in FIG.

FIG. 14 is an exploded perspective view showing a conventional electromagnetic actuator.

[Explanation of symbols]

10 Base plate (base) 10a Exposure opening 11 Fitting hole (positioning part) 11 'Fitting groove (positioning part) 11 ″ Projection (positioning part) 12 Support shaft (positioning part) 13 Fitting pin (positioning part) ) 14 fitting groove (positioning part) 15 snap hook (snap fit structure, connecting means) 16 hooked part (snap fit structure, connecting means) 20 electromagnetic actuator 21 rotor 22a flange 22b positioning pin 30 electromagnetic actuator 31 upper yoke 32 Lower yoke 31 ', 32' Fitting holes 40, 40 ', 40 "Holding member (fixing means) 44 Snap hook (snap fitting structure, connecting means) 45, 45' Pressing protrusion 46 Pressing convex portion 47 Locking Part (snap-fit structure, connecting means) 70 Electromagnetic actuators 71, 72 Yokes 73, 74 Coil 5 rotor

Claims (5)

[Claims] 1. An electromagnetic actuator device comprising: a base; a plurality of electromagnetic actuators arranged at predetermined positions of the base; and fixing means for fixing the plurality of electromagnetic actuators to the base, The electromagnetic actuator device, wherein the fixing means includes one pressing member that simultaneously presses the plurality of electromagnetic actuators toward the base, and a connecting means that connects the pressing members to the base. 2. The base is a base plate having an opening for exposure and supporting a blade that opens or closes or narrows the opening, and the plurality of electromagnetic actuators are arranged along the periphery of the opening. The electromagnetic actuator device according to claim 1, wherein the pressing member is formed to be curved along the periphery of the opening. 3. The electromagnetic actuator device according to claim 1, wherein the connecting means includes a snap-fit structure formed on the base and the pressing member. 4. The electromagnetic actuator device according to claim 1, wherein the plurality of electromagnetic actuators include different types of electromagnetic actuators. 5. The electromagnetic actuator device according to claim 1, wherein the base has a positioning portion that positions the electromagnetic actuator at a predetermined position.