KR100820295B1 - shutter actuator of small size camera - Google Patents

Abstract

By simplifying the structure of the shutter driving device (referred to as an electronic actuator) of the small camera, the workability of manufacturing and assembling them can be improved, and the compact camera can be made compact due to the miniaturization of the shutter driving device.

A compact camera shutter driving apparatus according to an embodiment of the present invention, in the small camera shutter driving apparatus,

A base portion having a light passing hole for passing light through the lenses,

A shutter member rotatably mounted on one side of the base portion, the shutter member opening and closing the light passing hole during rotation by the driving unit;

A first rotor rotatably supported at one side of the base part and connected to one end of the shutter member, a first coil part spaced apart from the first rotor, and one side mounted on upper and lower sides of the first coil part, The protrusion includes a pair of first yokes disposed to face the outer side of the first rotor, and the protrusion of the first yoke due to the magnetization of the first yoke when power is supplied to the first coil from the outside. A magnetic field is formed between the first rotor and the shutter driver to open and close the light passing hole by rotating the shutter member due to the rotation of the first rotor by the magnetic field;

And a control unit controlling power supplied to the shutter driver.

Miniature Cameras, Shutter Drives, Electronic Actuators, Coils, Magnets, Rotors

Description

Shutter actuator of small size camera

1 is an essential part excerpt perspective view of a compact camera shutter driving apparatus according to an embodiment of the present invention;

2 is a bottom perspective view of the driving device shown in FIG. 1;

3 is a perspective view of the actuator and the shutter shown in FIG.

4 (a) is a perspective view of the actuator in the compact camera shutter driving apparatus according to an embodiment of the present invention,

Figure 4 (b) is an exploded perspective view of the actuator shown in Figure 4 (a),

Figure 5 (a) is a modified example of the actuator in the compact camera shutter driving apparatus according to an embodiment of the present invention,

Figure 5 (b) is an exploded perspective view of the actuator shown in Figure 5 (a),

Figure 6 (a) is another modified example of the actuator in the compact camera shutter drive apparatus according to an embodiment of the present invention,

FIG. 6B is an exploded perspective view of the actuator shown in FIG. 6A.

* Explanation of symbols used in the main part of the drawing

One; Light through hole

2; Base part

3; Shutter member

4; First rotor

5; 1st coil part

6,7; First yoke

8; First shutter drive unit

9,19,29; Connecting pin

10,30; lever

14; Second rotor

15; 2nd coil part

16,17; Second yoke

18; Second shutter drive unit

24; Third rotor

25; 3rd coil part

26,27; Third yoke

28; Third shutter drive unit

The present invention relates to a compact camera shutter driving apparatus which can simplify the structure of the shutter driving apparatus mounted on the small camera so that the size can be made compact.

More specifically, a compact camera shutter capable of manufacturing and assembling them due to the simplification of the structure of the shutter driving device (referred to as an electronic actuator) of the small camera and compacting the small camera due to the miniaturization of the shutter driving device. It relates to a drive device.

In general, a digital camera converts an image signal for a still image into an electrical signal to electrically perform all signal processing such as processing, recording, or reproduction. Like a conventional silver salt film camera, a digital camera does not need a darkroom work or chemical processing for development and can immediately view a captured image, and post-process or remotely transmit the recorded image by a computer.

In the case of photographing a dynamic subject using such a digital camera, there is a problem that temporal deviation occurs in odd lines and even lines due to the influence of interlacing, and the appearance of the subject forms a sawtooth shape. In view of this, a full frame image is output by non-interlace, but the number of pixels is increased by non-interlace, and a shutter device is required to shield the image pickup device from light while the image data is taken in.

On the other hand, the technical content of the camera applying the electronic shutter is described in US Patent No. 4918480 (October 27, 1998), Patent Application No. 1997-38300 (1997.8.12) (Invention; Electronic shutter driving method of the camera and its device) And the like.

The above-described electronic shutter driving devices have a complicated structure, and therefore, due to the bulky shutter device, they cannot be applied to a small camera such as a camera for a portable terminal.

That is, a technology for miniaturization and compactness of the shutter driving apparatus has been applied and developed so that it can be used in a small camera such as a camera for a portable terminal whose appearance and size are becoming smaller.

An embodiment of the present invention is to improve the workability of manufacturing and assembling them due to the simplified structure of the shutter drive device of the small camera, and the compact camera shutter drive device that can compact the compact camera due to the miniaturization of the shutter drive device and Related.

One embodiment of the present invention relates to a compact camera shutter drive device that can be freely designed due to the miniaturization and compactness of the shutter drive device.

A compact camera shutter driving apparatus according to an embodiment of the present invention, in the small camera shutter driving apparatus,

A base portion having a light passing hole for passing light through the lenses,

A shutter member rotatably mounted on one side of the base portion, the shutter member opening and closing the light passing hole during rotation by the driving unit;

A first rotor rotatably supported at one side of the base part and connected to one end of the shutter member, a first coil part spaced apart from the first rotor, and one side mounted on upper and lower sides of the first coil part, The protrusion includes a pair of first yokes disposed to face the outer side of the first rotor, and the protrusion of the first yoke due to the magnetization of the first yoke when power is supplied to the first coil from the outside. A first shutter driver configured to form a magnetic field between the first rotor and the first rotor to rotate the shutter member to open and close the light passing hole by rotating the first rotor by the magnetic field;

And a control unit for controlling power supplied to the first shutter driver.

At this time, the first rotor is a two-pole magnet (N pole, magnet consisting of S pole) is used.

The first coil part described above has a circular cross-sectional shape so as to reduce the space occupied in the base part. The first yoke described above has a cross-sectional shape in a plate shape so as to reduce the height occupied in the up-down direction and the front-rear direction inside the base part.

A compact camera shutter driving device according to another embodiment of the present invention is a compact camera shutter driving device,

A base portion having a light passing hole for passing light through the lenses,

A shutter member rotatably mounted on one side of the base portion, the shutter member opening and closing the light passing hole during rotation by the driving unit;

A second rotor rotatably supported on one side of the base part and connected to one end of the shutter member, and a pair of second coil parts disposed on both sides of the second rotor and spaced apart from each other, and symmetrically divided and formed on one side The second coil part is mounted on the upper and lower sides, respectively, and includes two pairs of second yokes, each of which is disposed so as to face each other so that the protrusions on the other side are spaced apart from the outer surface of the second rotor. A second shutter is formed between the projection of the second yoke and the second rotor due to the magnetization of the second yoke at the time of supply, and the shutter is rotated to open and close the light passing hole by rotating the second rotor by the magnetic field. Drive unit,

And a control unit for controlling power supplied to the second shutter driver.

At this time, the above-mentioned second rotor is a two-pole magnet (magnet consisting of N pole, S pole) or four-pole magnet (magnet consisting of N pole S pole N pole S pole) is used.

The second coil part has a circular cross-sectional shape so as to reduce the space occupied in the base part. The second yoke described above is formed in a plate shape so as to reduce the height occupied in the up-down direction (Z-axis direction) and the front-rear direction (Y-axis direction) inside the base portion.

In the compact camera shutter driving apparatus according to another embodiment of the present invention, in the compact camera shutter driving apparatus,

A base portion having a light passing hole for passing light through the lenses,

A shutter member rotatably mounted on one side of the base portion, the shutter member opening and closing the light passing hole during rotation by the driving unit;

A third rotor rotatably supported at one side of the base part and connected to one end of the shutter member, a third coil part disposed to be spaced apart from the third rotor, and one side mounted on the upper and lower sides of the third coil part, respectively, And a pair of protrusions formed to be spaced apart from each other, including a pair of third yokes arranged to face the outer side of the third rotor and opposing each other, and magnetizing the third yoke when power is supplied to the third coil from the outside. Due to the magnetic field is formed between the projection of the third yoke and the third rotor, the third shutter drive unit for opening and closing the light passing hole by rotating the shutter member due to the third rotor rotation by the magnetic field,

And a control unit controlling power supplied to the third shutter driver.

At this time, the third rotor is a two-pole magnet (magnet consisting of N pole, S pole) or four-pole magnet (magnet consisting of N pole S pole N pole S pole) is used.

The third coil part may have a circular cross-sectional shape so as to reduce a space occupied in the base part. The third yoke described above is formed in a plate shape so as to reduce the height occupied in the up-down direction (Z-axis direction) and the front-rear direction (Y-axis direction) inside the base portion.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the invention, and therefore It does not mean that the technical spirit and scope of the present invention is limited.

As shown in Figure 1 to Figure 4 (a, b), the compact camera shutter driving apparatus according to an embodiment of the present invention,

A base portion 2 having a light passing hole 1 for passing light through the lenses (not shown),

As long as it is rotatably mounted on one side of the base part 2 by a fixing pin 11 and is disposed to face the light passing hole 1 so as to open and close the light passing hole 1 when rotating by the driving unit. A pair of shutter members 3,

A coupling hole is formed in the center so as to be rotatably coupled to the rib formed in the base portion 2, and once in the shutter member 3 by the lever 10 coupled to the long hole 3a of the shutter member 3. Is connected, and the first rotor 4, the two-pole magnet (N pole, the magnet consisting of the S pole) is used, and is spaced apart from the first rotor 4, the coil is wound several times, when the power supply A first coil part 5 (referring to an electromagnet) having a circular cross-sectional shape to generate a magnetic field and reducing a space occupied in the base part 2, and one side of the first coil part 5 is connected to the first by a connecting pin 9. Protruding portions 6a and 7a (consisting of an arc shape) formed on the other side of the stator 5 so as to be conductively connected to each other are disposed to face the outer side of the first rotor 4 and face the base portion 2. The cross-sectional shape is plate-shaped to reduce the height occupied in the vertical direction and the front-rear direction inside. It comprises a pair of the first yoke (6,7) formed, and the first yoke (6,7) due to the magnetization of the first yoke (6,7) when the power supply to the first coil portion 5 from the outside ( A magnetic field is formed between the protruding portions 6a and 7a of the 6 and 7 and the first rotor 4, and the pair of shutter members due to the rotation of the first rotor 4 by the magnetic field ( 3) the first shutter driving unit 8 for opening and closing the light passing hole 1 by rotating the fixing pin 11 around the central axis;

And a controller PCB (not shown) for controlling the power supplied to the first shutter driver 8.

At this time, the lens assembly consisting of a plurality of lenses for converting the magnification of the image of the subject, an image sensor for converting the image passing through the lens into an electrical signal, a casing for fixing the lens assembly and the image sensor, cooking The technical contents of the small camera including the aperture, the driving means for driving the same, the shutter cover, the aperture cover, and the like will belong to the technology used in the art, and thus, detailed descriptions and drawings thereof will be omitted. .

Hereinafter, a use example of a compact camera shutter driving apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 1 to 4 (a, b), in order to capture the image of the subject in the small camera to open all the light passing hole (1) formed in the base portion 2 by driving the shutter member (3) Accordingly, the light is passed through the lens assembly (not shown) to the image of the subject brightly by the image sensor (not shown). At this time, power from the outside is not supplied to the first coil part 5 by the control unit (not shown) of the small camera, and the light passing hole 1 is opened by the pair of shutter members 3. Maintain state.

On the other hand, when capturing an image of a subject using a small camera, the light incident to the lens group through the light passage hole (1) due to the shutter member 3 is momentarily blocked.

That is, when power from the outside is applied to the first coil portion 5 by a controller (not shown), a pair of conductive pins fixed to the upper and lower portions of the first coil portion 5 by the connecting pin 9. The first yoke (6,7) of is magnetized. As a result, a magnetic field is formed between the pair of protrusions 6a and 7a and the first rotor 4 which are formed on the other side of the first yoke 6 and 7 and are disposed to face the outer surface of the first rotor 4. Is formed.

At this time, as the above-described first rotor 4 is composed of two pole magnets (N pole and S pole), the first yoke 7 of the first rotor 4 is opposed to the "S" polarity of the first rotor 4. The protrusion 7a has the same "S" polarity as the first rotor 4. At the same time, the projecting portion 6a of the first yoke 6 opposite to the "N" polarity of the first rotor 4 has the same "N" polarity as the first rotor 4. Accordingly, as the rotational force is generated by the suction force and the repulsive force acting between the first rotor 4 and the protrusions 6a and 7a of the first yoke 6 and 7 opposed thereto, the first rotor 4 Rotates to output the driving force.

Therefore, as the above-described first rotor 4 is rotated within a predetermined angle range, the shutter is controlled by the lever 10 of the first rotor 4 coupled to the long hole 3a of the shutter member 3. The member 3 is rotated with the fixing pin 11 as the central axis. Since the pair of shutter members 3 are collected toward the center of the light passing hole 1, the light flowing into the light passing hole 1 can be blocked at a high speed.

In the state where the light passage hole 1 is closed by the shutter member 3 described above, the first magnetic body 4 is mutually different from the protrusions 6a and 7a of the first yokes 6 and 7 which generate magnetic fields having different polarities. As the pulling force (suction force) acts, a holding force for fixing the first rotor 4 in the state in which the shutter member 3 is rotated is generated to stabilize the shutter member 3.

That is, when the power supply to the first coil unit 5 is cut off by the controller, magnetic attraction force is generated between the first rotor 4 and the protrusions 6a and 7a of the first yokes 6 and 7. The first rotor 4 is rotated to stop.

On the other hand, in order to finish the photographing of the subject and open the light passing hole 1, the control unit supplies the current to the first coil unit 5 described above in the reverse direction, so that the protrusions 6a, 7a) is magnetized to the first opposite polarity. This causes the first rotor 4 to be rotated in the opposite direction by the suction force and the repulsive force acting between the first rotor 4 and the protrusions 6a and 7a.

Thus, the shutter member 3 is formed on the first rotor 4 and coupled to the long hole 3a of the shutter member 3 so that the shutter member 3 is moved outwardly with the fixing pin 11 as the central axis. Rotate The light passage hole 1 is opened due to the rotation of the pair of shutter members 3. In this case, when the light passage hole 1 is opened, the control unit cuts off the power supplied to the first coil part 5.

On the other hand, as the cross-sectional shape of the first coil part 5 described above is formed in a circular shape, the space occupied in the base part 2 can be reduced. As the cross-sectional shape of the above-described first yoke 6 and 7 is formed in a plate shape, the height occupied in the vertical direction and the front-rear direction in the base part 2 can be reduced. This makes it possible to miniaturize and compact the structure of a small camera.

1, 2, 3 and 5 (a, b), the compact camera shutter driving apparatus according to another embodiment of the present invention,

A base portion 2 having a light passing hole 1 for passing light through the lenses (not shown),

As long as the fixing pin 11 is rotatably mounted on one side of the base part 2, and disposed to face the light passing hole 1 so as to open and close the light passing hole 1 when rotating by the driving unit. A pair of shutter members 3,

A connecting piece 20 having a fixing pin 20a coupled to the rib formed on the base 2 and a fixing pin 20b rotatably coupled to a coupling hole (not shown) of the shutter member 3. The coupling hole to be coupled is formed in the center, a two-pole magnet (magnet consisting of N pole, S pole) (shown in Fig. 5 (b)) or four pole magnet (N pole S pole N pole S pole) The second rotor 14 (referring to the electromagnet) and the second rotor 14 are spaced apart on both the left and right sides of the second rotor 14 (not shown in the drawing), and the coils are wound several times, respectively. And a pair of second coil parts 15 (referring to electromagnets) having a circular cross-sectional shape to form a circular shape so as to reduce the space occupied in the base part 2, and are symmetrically divided, and one side is connected. Protruding portions 16a and 16b mounted on the other side so as to be conductively mounted on the upper and lower sides of the second coil portion 15 by pins 19, respectively. (17a, 17b) (consisting of an arc shape) are respectively disposed to face the outer side of the second rotor (14), so as to reduce the height occupied in the up-down and front-rear direction inside the base (2) The cross-sectional shape includes two pairs of second yokes 16 and 17 formed in a plate shape, and the second yokes 16 and 17 when power is supplied to the second coil part 15 from the outside. Due to the magnetization of the magnetic field is formed between the projections (16a, 16b) (17a, 17b) and the second rotor 14 of the second yoke (16, 17), the second rotor 14 rotates by the magnetic field Due to the second shutter drive unit 18 for opening and closing the light passing hole (1) by rotating the pair of shutter member (3) around the fixed pin (11) to the central axis,

And a controller PCB (not shown) for controlling the power supplied to the second shutter driver 18.

Therefore, the compact camera shutter driving apparatus according to another embodiment of the present invention, when power is supplied to the second coil unit 15 by the above-described control unit, is divided into left and right symmetrical forms and the upper and lower portions of the second coil unit 15 Two pairs of second yokes 16 and 17 fixed on one side are magnetized, respectively. As a result, two pairs of protrusions 16a, 16b (17a, 17b) and the second rotor are formed to be spaced apart from the other side of the second yoke (16, 17) and disposed to face the outer surface of the second rotor (14). A magnetic field is formed between the fourteen.

At this time, as the above-described second rotor 14 is composed of two pole magnets (N pole, S pole) (the second rotor 14 is a four pole magnet (N pole S pole N pole S pole) Magnets), and the protrusions 16a and 17a of the second yokes 16 and 17 opposed to the " S " polarity of the second rotor 14 have the same " S " "I have polarity. At the same time, the protrusions 16b and 17b of the second yokes 16 and 17 as opposed to the "N" polarity of the second rotor 14 have the same "N" polarity as the second rotor 14.

Accordingly, as the rotational force is generated by the suction force and the repulsive force acting between the second rotor 14 and the protrusions 16a, 17a, 16b, 17b of the second yoke 16, 17 opposed thereto, The two rotors 14 rotate to output the driving force.

By rotating the above-described second rotor 14 within a predetermined angle range, by the connecting piece 20 of the second rotor 4 coupled to the coupling hole (not shown) of the shutter member 3 The shutter member 3 is rotated with the fixing pin 11 as the central axis. Since the pair of shutter members 3 are collected toward the center of the light passing hole 1, the light flowing into the light passing hole 1 can be blocked at a high speed.

On the other hand, when the power supply to the second coil unit 15 is cut off by the controller, between the protrusions 16a, 17a, 16b, 17b of the second rotor 14 and the second yoke 16, 17. The magnetic attraction force is generated and the second rotor 14 rotates to stop.

As the control unit supplies the current to the second coil unit 15 in the reverse direction to open the light passage hole 1 described above, the protrusions 16a, 17a, 16b, 17b of the second yoke 16, 17, respectively. ) Is magnetized to the first opposite polarity. This causes the second rotor 14 to rotate in the opposite direction due to the suction and repulsion forces acting between the second rotor 14 and the protrusions 16a, 17a, 16b, 17b.

Accordingly, the shutter member 3 is fixed to the fixing pin 11 by the connecting pin 20 formed in the second rotor 14 and coupled to the coupling hole (not shown) of the shutter member 3. Rotate in the outward direction. The light passage hole 1 is opened due to the rotation of the pair of shutter members 3. In this case, when the light passage hole 1 is opened, the control unit cuts off the power supplied to the second coil unit 15.

At this time, since the base unit 2, the shutter member 3 and the control unit except for the second shutter driving unit 18 described above are substantially the same as in the exemplary embodiment of the present invention, descriptions thereof will be omitted and overlapped drawings. The signs are the same.

1, 2, 3 and 6 (a, b), the compact camera shutter driving apparatus according to another embodiment of the present invention,

A base portion 2 having a light passing hole 1 for passing light through the lenses (not shown),

As long as the fixing pin 11 is rotatably mounted on one side of the base part 2, and disposed to face the light passing hole 1 so as to open and close the light passing hole 1 when rotating by the driving unit. A pair of shutter members 3,

A coupling hole is formed in the center so as to be rotatably coupled to the rib formed in the base portion 2, and one end of the shutter member is connected by a lever 30 coupled to a long hole (not shown) of the shutter member 3. 3) a second pole magnet (N pole, magnet consisting of S pole) (shown in FIG. 6 (a)) or four pole magnet (N pole S pole N pole S pole magnet) is used. The third rotor 24 and the third rotor 24 are spaced apart and the coil is wound several times, generates a magnetic field when the power supply, cross-sectional shape to reduce the space occupied in the base 2 A third coil portion 25 (referred to an electromagnet) formed in a circular shape, and one side is electrically connected to the upper and lower sides of the third coil portion 25 by connecting pins 29, and are formed to be spaced apart from each other. A pair of projections 26a and 26b and 27a and 27b (consisting of arcs) are spaced apart from the outer surface of the third rotor 24. It is disposed, and comprises a pair of third yoke (26, 27) having a cross-sectional shape in the shape of a plate (plate) so as to reduce the height occupied in the vertical direction and the front and rear direction in the base portion 2, When power is supplied to the third coil unit 25 from the outside, the protrusions 26a, 26b (27a, 27b) of the third yokes 26, 27 and the third time are caused by the magnetization of the third yokes 26, 27. A magnetic field is formed between the electrons 24, and the pair of shutter members 3 are rotated around the fixing pin 11 by the rotation of the third rotor 24 by the magnetic field, thereby allowing the light passing hole 1 to be rotated. Third shutter drive unit 28 for opening and closing the,

And a controller PCB (not shown) for controlling the power supplied to the third shutter driver 28.

Therefore, in the compact camera shutter driving apparatus according to another embodiment of the present invention, when power is supplied to the third coil unit 25 by the above-described control unit, one side is fixed to upper and lower portions of the third coil unit 25. The pair of third yokes 26 and 27 are magnetized, respectively. As a result, two pairs of protrusions 26a, 26b (27a, 27b) and the third rotor are formed to be spaced apart from the other side of the third yoke 26 and 27 and disposed to face the outer surface of the third rotor 24. Between 24, a magnetic field is formed.

At this time, as the above-described third rotor 24 is composed of two pole magnets (N pole, S pole) (the third rotor 24 described above is a four pole magnet (N pole S pole N pole S). Magnets made of poles), and the pair of protrusions 27a and 27b of the third yoke 27 opposed to the “S” polarity of the third rotor 24 are connected to the third rotor 24. Have the same "S" polarity. At the same time, the pair of protrusions 26a and 26b of the third yoke 26 opposite the "N" polarity of the third rotor 24 have the same "N" polarity as the third rotor 24.

Accordingly, as the rotational force is generated by the suction force and the repulsive force acting between the third rotor 24 and the protrusions 26a, 26b, 27a, 27b of the third yoke 26, 27 opposed thereto, The three rotors 24 rotate to output the driving force.

As the above-described third rotor 24 is rotated within a predetermined angle range, the shutter is controlled by the lever 30 of the third rotor 24 coupled to the long hole (not shown) of the shutter member 3. The member 3 is rotated with the fixing pin 11 as the central axis. Since the pair of shutter members 3 are collected toward the center of the light passing hole 1, the light flowing into the light passing hole 1 can be blocked at a high speed.

When the power supply to the third coil unit 25 is cut off by the above-described control unit, between the protrusions 26a, 26b, 27a, 27b of the third rotor 24 and the third yoke 26, 27. The magnetic attraction force is generated and the third rotor 24 rotates to stop.

On the other hand, the third yoke (26, 27) is magnetized to the first opposite polarity by supplying the current to the third coil portion 25 in the reverse direction in order to open the above-described light passage hole (1). As a result, the third rotor 24 is rotated in the opposite direction by the suction force and the repulsive force acting between the third rotor 24 and the protrusions 26a and 26b and 27a and 27b.

As a result, the shutter member 3 is formed on the third rotor 24 by the lever 30 coupled to the long hole (not shown) of the shutter member 3 with the fixing pin 11 as the central axis. Rotate outward. The light passage hole 1 is opened due to the rotation of the pair of shutter members 3. At this time, when the light passage hole 1 is opened, the control unit cuts off the power supplied to the third coil unit 25.

At this time, since the base unit 2, the shutter member 3 and the control unit except for the third shutter drive unit 28 described above are substantially the same as in the exemplary embodiment of the present invention, descriptions thereof will be omitted and overlapped. The signs are the same.

As described above, the compact camera shutter driving apparatus according to an embodiment of the present invention has the following advantages.

By simplifying the structure of the shutter drive unit mounted on the small camera, the workability of manufacturing and assembling them is improved, and the compact camera is compacted due to the miniaturization of the shutter drive unit, thereby securing the competitiveness of products in the field of industry.

In addition, due to the miniaturization and compactness of the shutter driving device, it can be designed freely.

Claims (7)

delete delete delete delete delete In the compact camera shutter drive: A base portion 2 having a light passing hole 1 through which light passes through the lenses; A shutter member (3) rotatably mounted on one side of the base portion (2) and opening / closing the light passing hole (1) when rotating by the driving portion; A first rotor 4 rotatably supported at one side of the base part 2 and connected to one end of the shutter member 3, and spaced apart from the first rotor 4 to generate a magnetic field when power is supplied. And a first coil part 5 having a circular cross-sectional shape, and one side of which is mounted on the upper and lower sides of the first coil part 5, and the protrusion of the other side is spaced apart from the outer surface of the first rotor 4. And a pair of first yokes 6 and 7 having a cross-sectional shape in a plate shape. The magnetization of the first yokes 6 and 7 when power is supplied to the first coil portion 5 from the outside. Due to the magnetic field is formed between the projections (6a, 7a) of the first yoke (6,7) and the first rotor (4), the shutter member (3) due to the rotation of the first rotor (4) by the magnetic field A first shutter driver 8 which opens and closes the light passing hole 1 by rotating the first and second shutters; And And a control unit for controlling the power supplied to the first shutter driving unit (8). In the compact camera shutter drive: A base portion 2 having a light passing hole 1 through which light passes through the lenses; A shutter member (3) rotatably mounted on one side of the base portion (2) and opening / closing the light passing hole (1) when rotating by the driving portion; The second rotor 14 rotatably supported at one side of the base part 2 and connected to one end of the shutter member 3 and spaced apart from left and right sides of the second rotor 14 and supplied with power. The second coil part 15 which generates a magnetic field and has a circular cross-sectional shape, and is divided into left and right symmetrical parts, one side of which is mounted on the upper and lower sides of the second coil part 15, and the other side of the protrusion includes a second rotor ( 14) It comprises two pairs of the second yoke (16, 17) is arranged so as to face away from the outer surface and the cross-sectional shape is formed in a plate shape, when the power is supplied to the second coil portion 15 from the outside Due to the magnetization of the two yokes (16, 17), a magnetic field is formed between the protrusions (16a, 16b) (17a, 17b) of the second yoke (16, 17) and the second rotor (14). A second shutter driver 18 which opens and closes the light passing hole 1 by rotating the shutter member 3 due to the rotation of the second rotor 14; And And a control unit for controlling the power supplied to the second shutter driver (18).

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