KR101063200B1 - Camera lens door opener - Google Patents

Abstract

The present invention relates to a camera lens door opening and closing device, and more particularly, to a camera lens door opening and closing device that automatically opens and closes the door of a camera mounted on a mobile phone by using a shape memory alloy shrinking upon application of current.

The camera lens door opening and closing apparatus of the present invention, the camera lens door opening and closing device for opening and closing the camera lens, the opening and the base is formed on the front of the lens; A rotation door having one end hinged to the base and opening and closing the opening by rotation; A first mold restraint alloy connected to the rotary door and contracted when a current is applied to rotate the rotary door to open the opening; Elastic means coupled to the rotating door and adding an elastic force to the rotating door in a direction of closing the opening; Characterized in that the locking portion for fixing the rotating door when the opening is opened.

Camera lens door opener, shape memory alloy, leaf spring,

Description

Camera Lens Door Opener {CAMERA LENS DOOR OPENING AND SHUTTING APPARATUS}

The present invention relates to a camera lens door opening and closing device, and more particularly, to a camera lens door opening and closing device that automatically opens and closes the door of a camera mounted on a mobile phone by using a shape memory alloy that shrinks when a current is applied.

With the development of photography and digital technology, mobile phones or PDAs equipped with a camera device for converting an image formed through a lens into an electrical signal using an image pickup device and converting the image into digital data are stored.

The camera device is installed on the back, front or side of the mobile phone or PDA, and is installed to allow light to enter the lens.

Most mobile phones or PDAs are designed to expose the lens to the outside. In this case, dust or debris is frequently caught on the surface of the lens, which damages the lens or prevents clear pictures.

Thus, a PDA or a mobile phone with a camera door was developed.

In this case, the opening and closing method of the camera door is proposed by a mechanical camera lens door opening and closing device that is opened and closed by a mechanical interlock according to the user operation, and an opening and closing method by an automatic camera lens door opening and closing device that is automatically opened and closed according to a specific condition.

As an example of an automatic camera lens door opening and closing device, 'the camera lens door opening and closing device of the folder type mobile phone' published in the Patent Publication 2004-102482 and the 'camera door opening and closing device of the folder type mobile phone' published in the Patent Publication 2004-102483 are known. have.

The 102482 patent is to open and close the camera door with one door automatically by using solenoid, and the 102483 patent is to open and close the camera door with two doors automatically using the drive motor.

However, the prior art as described above, because the solenoid or motor for mounting the door to obtain the power, there is a limit to slim the camera lens door opening and closing device because of the large size of the parts, such as solenoid or motor.

An object of the present invention is to provide a camera lens door opening and closing device that can reduce the overall thickness of the camera lens door opening and closing device by using a thin shape memory alloy as a drive source for opening and closing the door.

In order to achieve the above object, the camera lens door opening and closing apparatus of the present invention includes a camera lens door opening and closing apparatus for opening and closing a camera lens, the base being formed in front of the lens; A rotation door having one end hinged to the base and opening and closing the opening by rotation; A first mold restraint alloy connected to the rotary door and contracted when a current is applied to rotate the rotary door to open the opening; Elastic means coupled to the rotating door and adding an elastic force to the rotating door in a direction of closing the opening; Characterized in that the locking portion for fixing the rotating door when the opening is opened.

The rotary door is hinged to the base, the first rotation door is formed with a first gear portion at one end, and the second rotation is hinged to the base, the second gear formed with a second gear to engage the first gear portion at one end It is made of a door, the first mold-shaped alloy is connected to the first rotary door at a position different from the center of rotation of the first rotary door.

One end of the elastic means is coupled to the rotary door, the other end is coupled to the base.

The elastic means is made of a leaf spring, the leaf spring is a wide surface is disposed in the rotational direction of the rotary door, one end of the leaf spring coupled to the rotary door is a flow preventing plate parallel to the upper surface of the rotary door It is formed and coupled to the surface contact with the upper or lower surface of the rotary door.

The elastic means is made of a leaf spring, the leaf spring surrounds the outer circumferential surface of the first rotary door and the second rotary door, one end is coupled to the first rotary door, the other end is coupled to the second rotary door do.

The leaf spring is a wide surface is disposed in the rotational direction of the rotary door, both ends of the leaf spring coupled to the rotary door is formed with a flow preventing plate parallel to the upper surface of the rotary door to the upper or lower surface of the rotary door It is coupled by surface contact.

The locking portion is hinged to the base, and the hook member is caught by the engaging projection formed on the rotary door when the rotary door rotates to open the opening; A latch holding spring for adding an elastic force to the hook member to maintain the latched projection; The second mold restraint alloy is connected to the hook member and contracts when an electric current is applied. The second mold restraint alloy rotates the hook member in a direction opposite to the direction of elastic force of the latching spring when contracted.

The first mold restraining alloy is formed in a linear or coil shape.

The second mold restraining alloy is formed in a linear or coil form.

The rotating door is made of one, and the rotating door and the base is equipped with a magnet part for fixing the rotating door by a magnetic force when the opening and closing of the rotating door is completed, the magnet part, when the opening is opened the rotating door An open magnet part to be fixed; It is made of a closed magnet for fixing the rotating door when the opening is closed, the open magnet, the first magnet is mounted to any one of the rotary door or the base, and the other one is mounted in contact with the first magnet It is made of a second magnet or a magnetic body, the closed magnet portion, the third magnet is mounted to any one of the rotary door or the base, and the other one is attached to the fourth magnet or magnetic body attached to the third magnet.

Alternatively, the magnet portion, an opening magnet portion for fixing the rotating door when the opening is opened; It is made of a closed magnet for fixing the rotating door when the opening is closed, the open magnet, the fifth magnet is mounted to any one of the rotary door or the base, and the other one is attached to contact with the fifth magnet A sixth magnet or a magnetic body, wherein the closed magnet portion, the seventh magnet mounted to any one of the first rotary door or the second rotary door, and the eighth magnet mounted to the other one in contact with the seventh magnet or It is made of magnetic material.

According to the camera lens door opening and closing device of the present invention as described above, since the camera door is opened and closed using the shape memory alloy, the thickness of the camera lens door opening and closing device mounted on a mobile phone can be made thinner.

The camera lens door opening and closing apparatus of the present invention can be applied to a device equipped with a camera such as a digital camera as well as a mobile phone.

Hereinafter, the first and second embodiments will be described on the premise that the camera lens door opening and closing device is mounted on the mobile phone.

First embodiment

1 is a perspective view of a camera lens door opening and closing device according to a first embodiment of the present invention, Figure 2 is an exploded perspective view of a camera lens door opening and closing device according to a first embodiment of the present invention, Figure 3 is 4 is a plan view of a camera lens door opening and closing device according to an embodiment, and FIG. 4 is a plan view of a camera lens door opening and closing device according to a first embodiment of the present invention.

The camera door 130 opening and closing device of the present invention is to open and close the camera lens, the first embodiment as shown in Figures 1 to 4, the base 110, the cover 120 and the rotating door ( 130, the first mold suppressing alloy SMA 140, an elastic means, a locking unit 160, and the like.

The base 110 may be an outer case of the mobile phone camera, or may be made of a separate member and mounted outside the mobile phone camera.

An opening 111 is formed in the base 110, and the opening 111 is disposed on the front surface of the camera lens so that the opening 111 and the lens lie in a straight line in the optical axis direction.

The base 110 is equipped with components such as the rotary door 130, the first mold-shaped alloy 140, the elastic means, the locking unit 160 and the like.

The cover 120 covers the base 110 on which the above-described components are mounted, and a hole corresponding to the opening 111 is formed in the cover 120 as well.

One end of the rotary door 130 is hinged to the base 110, and opens and closes the opening 111 by rotation.

One end of the rotary door 130 refers to a place far from the opening 111 of both ends of the rotary door 130.

In this embodiment, the rotary door 130 is composed of one.

The first shape-retaining alloy 140 is connected to the rotary door 130 to rotate the rotary door 130 to open the opening 111.

Since the first shape-retaining alloy 140 contracts when a current is applied, the rotating door 130 may be rotated.

The first shape-retaining alloy 140 is connected to the rotary door 130 at a position different from the center of rotation of the rotary door 130 to rotate the rotary door 130.

In the present embodiment, both ends of the first shape-retaining alloy 140 are fixedly coupled to the base 110, and a central portion thereof is connected to the rotary door 130.

At this time, the first shape of the memory alloy 140 is made of a linear (linear) or coil shape, it is preferable to be made in a linear to slim the opening and closing device.

The elastic means is coupled to the rotary door 130, and serves to add an elastic force in the direction to close the opening 111 to the rotary door 130.

The elastic means is composed of a leaf spring 150, one end is coupled to the rotary door 130, the other end is coupled to the base (110).

The leaf spring 150 has an M shape, and a wide surface thereof is disposed in the rotation direction of the rotary door 130.

One end of the leaf spring 150 coupled to the rotary door 130 is formed with a flow preventing plate 151 parallel to the upper surface of the rotary door 130, the upper or lower surface of the rotary door 130 It is coupled by surface contact.

As described above, by forming the flow preventing plate 151 to be coupled to the upper surface or the lower surface of the rotary door 130, by increasing the contact area between the rotary door 130 and the leaf spring 150 to the Even if there is a difference in height between one end and the other end of the leaf spring 150, the rotation door 130 can be prevented from flowing in the vertical direction while rotating.

The locking unit 160 serves to fix the rotary door 130 when the opening 111 is opened.

The locking unit 160 is composed of a hook member 161, a locking retaining spring 162, and the second shape locking alloy 163.

The hook member 161 is hinged to the base 110, when the rotary door 130 is rotated to open the opening 111 is caught by the locking projection 131 formed in the rotary door 130 It serves to fix the rotary door 130 to.

The locking retaining spring 162 has one end fixed to the base 110 and the other end coupled to the hook member 161 to engage the hook protrusion 131 of the rotary door 130 with the hook member 161. ) And adds an elastic force to maintain the jammed state.

The latch holding spring 162 is sufficient to use a coil spring or a torsion spring.

The second mold-retaining alloy 163 is connected to the hook member 161 and is contracted when an electric current is applied to rotate the hook member 161 in a direction opposite to the direction of elastic force of the latch holding spring 162.

The second door-shaped retaining alloy 163 is contracted to rotate the hook member 161 in a direction opposite to the direction of elastic force of the retaining spring 162, so that the rotary door 130 from the hook member 161 It is released and it becomes a state which can rotate freely.

In this case, in order to rotate the hook member 161, the second shape restraint alloy 163 is connected to the hook member 161 at a position different from the rotation center of the hook member 161.

In this embodiment, both ends of the second shape restraint alloy 163 are fixedly coupled to the base 110, and a central portion thereof is connected to the hook member 161.

In this case, the second mold keeping alloy 163 is made of a linear or coil shape, it is preferably made of a linear for slimming the switchgear.

On the other hand, in order to maintain the opening and closing state without the rotation door 130 flows, the rotation door 130 and / or the base 110 by the magnetic force when the opening and closing of the rotation door 130 is completed by the rotation The magnet unit fixing the door 130 may be mounted.

The magnet part may be an open magnet part 170 for fixing the rotary door 130 when the opening part 111 is opened, and a closure for fixing the rotary door 130 when the opening part 111 is closed. It is made of a magnet portion 180.

The open magnet part 170 may include a first magnet 171 mounted to one of the rotary door 130 and the base 110, and a second magnet attached to the other one to contact the first magnet 171. It is made of a magnet or magnetic body 172.

In addition, the closed magnet part 180 may be attached to the third magnet 181 mounted on one of the rotating door 130 or the base 110 and the third magnet 181 mounted on the other one to contact the third magnet 181. The fourth magnet or magnetic body 182 is formed.

In this embodiment, a first magnet 171 and a third magnet 181 are mounted on the rotary door 130, and magnetic bodies 172, 182 are mounted on the base 110.

Of course, the camera lens door opening and closing device of the present invention may be operated only by the elastic force and the locking portion 160 of the leaf spring 150 without the magnet portion.

Hereinafter, an operation process of the present invention having the above-described configuration will be described.

As shown in FIG. 3, in the state in which the opening 111 is closed, the leaf spring 150 maintains a relaxed state, and the first mold restraint alloy 140 and the second mold restraint alloy 163 are shown in FIG. ) Is in a relaxed state because no current is applied.

In this case, the rotary door 130 is formed by contacting the closed magnet part 180, that is, the third magnet 181 mounted on the rotary door 130 and the magnetic body 182 mounted on the base 110. ) Maintains a constant position without rotating flow.

In this state, when the user manipulates a separate button or the like to open the opening 111, the controller (not shown) applies a current to the first shape-retaining alloy 140.

When the current of the first mold restraint alloy 140, the first mold restraint alloy 140 is contracted, the rotary door 130 connected to the first mold restraint 140 is the leaf spring While rotating or compressing 150, the opening 111 is opened.

In the present embodiment, the leaf spring 150 is disposed in the direction in which the rotation door 130 rotates when the opening 111 is opened. The leaf spring 150 is rotated by the rotation door 130. ) Is compressed.

When the rotating door 130 is rotated by a predetermined angle or more, the engaging protrusion 131 formed in the rotating door 130 is in contact with the hook member 161.

In this state, when the rotating door 130 is further rotated, the hook protrusion is rotated by the locking protrusion 131 to compress or expand the locking holding spring 162.

In addition, when the locking projection 131 exceeds the hook member 161, the hook member 161 is reversely rotated by the elastic restoring force of the locking retaining spring 162 that has been compressed or expanded. Hanging projection 131 is to be hanging.

That is, the rotary door 130 is to be rotated in the direction of closing the opening 111 by the elastic force of the leaf spring 150, but the hook protrusion 131 formed in the rotary door 130 is the hook member As shown in FIG. 4, the opening 111 is kept open.

When the opening 111 is maintained in the open state as described above, the controller (not shown) cuts off the current applied to the first mold restraint alloy 140 so that the first mold restraint alloy 140 continues to the current. To prevent heating.

In this case, the rotary door 130 is formed by mutual contact between the first magnet 171 mounted to the open magnet 170, that is, the rotary door 130, and the magnetic body 172 mounted to the base 110. ) Keeps the opening 111 open without rotation flow.

In addition, by forming the flow preventing plate 151 on the leaf spring 150, even if there is a difference in height between one end and the other end of the leaf spring 150, the flow preventing plate 151 or the upper surface of the rotary door 130 or The bottom surface is in contact with the lower surface, the rotation door 130 can be prevented from flowing in the vertical direction while rotating.

Meanwhile, as shown in FIG. 4, when the opening 111 is to be closed while the opening 111 is open, the controller, which is not shown, applies a current to the second shape storage alloy 163. do.

Then, the second shape-retaining alloy 163 is contracted, so that the hook member 161 is rotated in the direction opposite to the direction of the elastic force acting the holding spring 162.

As the hook member 161 is rotated by the second mold restraint alloy 163, the rotary door 130 hanging on the hook member 161 is elastically restored by the expanded plate spring 150. The opening 111 is rotated in the direction of closing to close the opening 111 as shown in FIG. 3.

In addition, when the opening 111 is completely closed, the controller (not shown) blocks the current applied to the second mold restraint alloy 163 to continuously heat the second mold restraint alloy 163 to the current. prevent.

The rotary door 130 is in close contact with the base 110 by the closed magnet 180, it is possible to completely close the opening 111, and also the opening ( 111 can be kept closed.

As described above, by opening and closing the door 130 of the mobile phone camera using the shape memory alloy, it is possible to achieve a slimmer product by making the thickness of the switchgear thinner.

Second embodiment

5 is a perspective view of a camera lens door opening and closing apparatus according to a second embodiment of the present invention, Figure 6 is an exploded perspective view of a camera lens door opening and closing apparatus according to a second embodiment of the present invention, Figure 7 is a first embodiment of the present invention 8 is a plan view of the camera lens door opening and closing device according to the second embodiment is closed, Figure 8 is a plan view of the camera lens door opening and closing device according to the second embodiment of the present invention.

5 to 8, the base 210, the cover 220, the rotating door 230, the first shape memory alloy 240, the elastic means, locking Section 260 and the like.

Compared to the first embodiment, the second embodiment is different from the rotary door 230, the leaf spring 250, and the like.

The base 210, the cover 220, the elastic means, the locking part 260, and the like are the same as those in the first embodiment, and detailed description thereof will be omitted.

The rotary door 230 is composed of a first rotary door 231 and a second rotary door 235.

The first rotating door 231 is hinged to the base 210 and has a first gear portion 232 formed at one end thereof.

The second rotating door 235 is hinged to the base 210 and has a second gear part 236 engaged with the first gear part 232 at one end thereof.

The first rotary door 231 and the second rotary door 235 open and close half of the opening 211 by engaging rotation of the first gear part 232 and the second gear part 236. The opening 211 is opened and closed as a whole.

That is, the first rotary door 231 and the second rotary door 235 contact each other to close the opening 211, and rotate in opposite directions to open the opening 211.

The first shape-retaining alloy 240 is connected to the first rotating door 231 at a position different from the center of rotation of the first rotating door 231.

The elastic means is composed of a leaf spring 250, and wraps around the outer circumferential surface of one end of the first rotary door 231 and one end of the second rotary door 235, one end of the first rotary door 231 Is coupled to, the other end is coupled to the second rotary door 235.

Accordingly, the first rotating door 231 and the second rotating door 235 maintain the state of closing the opening 211 in contact with each other in a free state by the elastic force of the leaf spring 250.

The leaf spring 250 is a wide surface is disposed in the rotation direction of the rotary door 230, the upper surface of the rotary door 230 and both ends of the leaf spring 250 is coupled to the rotary door 230 A parallel flow preventing plate 251 is formed and coupled to surface contact with the upper or lower surface of the rotary door 230.

The plate spring 250 is in contact with the first rotation door 231 and the second rotation door 235 in the vertical direction by the flow preventing plate 251 to increase the contact area, and thus the first rotation door 231. When the second rotating door 235 is rotated, the first rotating door 231 and the second rotating door 235 may be prevented from flowing upward and downward.

On the other hand, in order to maintain the opening and closing state without flowing the rotating door 230, the rotary door 230 and / or the base 210 is rotated by the magnetic force when the opening and closing of the rotary door 230 is completed The magnet unit fixing the door 230 may be mounted.

The magnet part may include an open magnet part 270 for fixing the rotary door 230 when the opening 211 is opened, and a closed magnet for fixing the rotary door 230 when the opening 211 is closed. A portion 280 is made.

 The open magnet part 270 may include a fifth magnet 271 mounted on either the rotary door 230 or the base 210 and a sixth magnet mounted on the other one to contact the fifth magnet 271. It is made of a magnet or magnetic body 272.

The closed magnet part 280 may include a seventh magnet 281 mounted to one of the first rotating door 231 and the second rotating door 235, and the seventh magnet mounted to the other one. An eighth magnet or magnetic body 282 is in contact with (281).

In the present embodiment, a fifth magnet 271 and a seventh magnet 281 are mounted on the first rotating door 231, and magnetic materials 272, 282 are mounted on the second rotating door 235 and the base 210. It was.

Other configurations are the same as those in the first embodiment, and detailed description thereof will be omitted.

Hereinafter, an operation process of the present invention having the above-described configuration will be described.

As shown in FIG. 7, in the state in which the opening 211 is closed, the leaf spring 250 applies an elastic force so that the first rotating door 231 and the second rotating door 235 contact each other. The first mold restraint alloy 240 and the second mold restraint alloy 263 are placed in a relaxed state because no current is applied.

At this time, by the mutual contact between the closed magnet portion 280, that is, the seventh magnet 281 attached to the first rotary door 231, and the magnetic body 282 mounted to the second rotary door 235, The first rotating door 231 and the second rotating door 235 are in contact with each other to completely close the opening 211 and at the same time maintains a constant position without flowing to each other.

In this state, when the user manipulates a separate button or the like to open the opening 211, the controller (not shown) applies a current to the first shape-retaining alloy 240.

When the current of the first mold restraint alloy 240, the first mold restraint alloy 240 is contracted, the first rotary door 231 connected to the first mold restraint alloy 240 is As a result, the second rotating door 235 having the second gear part 236 meshed with the first gear part 232 of the first rotating door 231 is rotated. 231 is rotated in the opposite direction.

As the first rotary door 231 and the second rotary door 235 are rotated in a direction away from each other, the leaf spring 250 is expanded, and the opening 211 is gradually opened.

When the first rotary door 231 is rotated by a predetermined angle or more, the locking protrusion 233 formed on the first rotary door 231 is in contact with the hook member 261.

In this state, when the first rotary door 231 further rotates, the hook member 261 is rotated by the locking protrusion 233 to compress or expand the locking holding spring 262.

When the locking protrusion 233 crosses the hook member 261, the hook member 261 is reversely rotated by the elastic restoring force of the locking retaining spring 262 that has been compressed or expanded. Hanging projection 233 is hanging.

That is, although the first rotating door 231 tries to rotate in the direction of closing the opening 211 by the elastic force of the leaf spring 250, the locking protrusion 233 formed in the first rotating door 231. Is hooked to the hook member 261 to maintain the opening 211 as shown in FIG. 8.

When the opening 211 is kept open as described above, the control unit not shown cuts off the current applied to the first mold restraint alloy 240 so that the first mold restraint alloy 240 continues to the current. To prevent heating.

In this case, the rotary door is formed by the mutual contact between the open magnet portion 270, that is, the fifth magnet 271 mounted on the first rotating door 231, and the magnetic body 272 mounted on the base 210. 230 maintains the opening 211 in an open state without rotation flow.

In addition, by forming the flow preventing plate 251 in the leaf spring 250, the flow preventing plate 251 is in surface contact with the upper or lower surface of the rotary door 230, the rotary door 230 ) Can be prevented from flowing in the vertical direction while rotating.

Meanwhile, when the opening 211 is to be closed in the state in which the opening 211 is opened as shown in FIG. 8, the controller, which is not shown, applies a current to the second shape storage alloy 263. do.

Then, the second shape-retaining alloy 263 is contracted, so that the hook member 261 is rotated in the direction opposite to the direction of the elastic force acting the holding spring (262).

As the hook member 261 is rotated by the second mold restraint alloy 263, the first rotating door 231 hanging on the hook member 261 has an elastic restoring force of the expanded leaf spring 250. It rotates in the direction to close the opening 211 by.

In this case, as the first rotating door 231 is rotated in the direction of closing the opening 211, the second gear part 236 meshing with the first gear part 232 of the first rotating door 231. The second rotating door 235 is also rotated to close the opening 211, as shown in Figure 7 the first rotating door 231 and the second rotating door 235 is By contacting each other, the opening 211 is closed.

In addition, when the opening 211 is completely closed, the controller (not shown) blocks the current applied to the second mold restraint alloy 263 so that the second mold restraint alloy 263 is continuously heated to the current. prevent.

The first rotating door 231 and the second rotating door 235 are in close contact with each other by the closed magnet part 280, thereby completely closing the opening 211, and easily flowed by an external force. Without this, the opening 211 may be kept closed.

As described above, by opening and closing the door of the mobile phone camera using the shape memory alloy, it is possible to achieve a slimmer product by making the thickness of the opening and closing device thinner.

The camera lens door opening and closing apparatus of the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the range in which the technical idea of the present invention is permitted.

1 is a perspective view of a camera lens door opening and closing apparatus according to a first embodiment of the present invention;

2 is an exploded perspective view of a camera lens door opening and closing apparatus according to a first embodiment of the present invention;

3 is a plan view of the camera lens door opening and closing device according to the first embodiment of the present invention in a closed state,

Figure 4 is a plan view of the camera lens door opening and closing state according to the first embodiment of the present invention,

5 is a perspective view of a camera lens door opening and closing apparatus according to a second embodiment of the present invention;

6 is an exploded perspective view of a camera lens door opening and closing apparatus according to a second embodiment of the present invention;

7 is a plan view of a camera lens door opening and closing device according to a second embodiment of the present invention in a closed state;

8 is a plan view of the camera lens door opening and closing state according to the second embodiment of the present invention;

<Description of the symbols for the main parts of the drawings>

110: base, 111: opening, 120: cover, 130: rotating door, 131: locking projection, 140: first shape locking alloy, 150: leaf spring, 151: flow preventing plate, 160: locking part, 161: hook member , 162: holding spring, 163: second shape memory alloy, 170: open magnet part, 171: first magnet, 172: magnetic body, 180: closed magnet part, 181: third magnet, 182: magnetic body,

210: base, 211: opening, 220: cover, 230: rotating door, 231: first rotating door, 232: first gear part, 233: locking projection, 235: second rotating door, 236: second gear part, 240: the first shape-retaining alloy, 250: leaf spring, 251: flow preventing plate, 260: locking portion, 261: hook member, 262: locking retaining spring, 263: second shape-retaining alloy, 270: open magnet portion, 271 : Fifth magnet, 272: magnetic material, 280: closed magnet part, 281: seventh magnet, 282: magnetic material,

Claims (11)

In the camera lens door opening and closing device for opening and closing the camera lens, A base having an opening formed in the front of the lens; A rotation door having one end hinged to the base and opening and closing the opening by rotation; A first mold restraint alloy connected to the rotary door and contracted when a current is applied to rotate the rotary door to open the opening; Elastic means coupled to the rotating door and adding an elastic force to the rotating door in a direction of closing the opening; When the opening is made of a locking portion for fixing the rotating door, The rotating door is, A first rotating door hinged to the base and having a first gear portion at one end thereof; A second rotary door hinged to the base and having a second gear portion engaged with the first gear portion at one end thereof; The first shape-retaining alloy is connected to the first rotating door at a position different from the center of rotation of the first rotating door, The elastic means is made of a leaf spring, while surrounding the outer peripheral surfaces of the first rotary door and the second rotary door, one end is coupled to the first rotary door, the other end is coupled to the second rotary door, The leaf spring is a wide surface is disposed in the rotation direction of the rotary door, Both ends of the leaf spring coupled to the rotating door is formed with a flow preventing plate parallel to the upper surface of the rotary door is coupled to the camera lens door opening and closing device characterized in that the surface contact is coupled to the upper or lower surface. delete delete In the camera lens door opening and closing device for opening and closing the camera lens, A base having an opening formed in the front of the lens; A rotation door having one end hinged to the base and opening and closing the opening by rotation; A first mold restraint alloy connected to the rotary door and contracted when a current is applied to rotate the rotary door to open the opening; Elastic means coupled to the rotating door and adding an elastic force to the rotating door in a direction of closing the opening; When the opening is made of a locking portion for fixing the rotating door, One end of the elastic means is coupled to the rotary door, the other end is coupled to the base, The elastic means is made of a leaf spring, The leaf spring is a wide surface is disposed in the rotation direction of the rotary door, One end of the leaf spring coupled to the rotary door is formed with a flow preventing plate parallel to the upper surface of the rotary door is coupled to the camera lens door opening and closing device characterized in that the surface contact is coupled to the upper or lower surface. delete delete The method according to claim 1 or 4, The locking unit, A hook member hinged to the base, the hook member engaging the protrusion formed in the rotary door when the rotary door rotates to open the opening; A latch holding spring for adding an elastic force to the hook member to maintain the latched projection; Is connected to the hook member, made of a second mold-type alloy that shrinks when the current is applied, And the second shape retaining alloy rotates the hook member in a direction opposite to the direction of elastic force of the locking retaining spring upon contraction. The method according to claim 1 or 4, The first shape of the holding alloy is a camera lens door opening and closing device, characterized in that made of a linear or coil shape. The method of claim 7, wherein The second shape-retaining alloy is a camera lens door opening and closing device characterized in that the linear or coil form. The method of claim 4, wherein The rotating door is made of one, The rotating door and the base is equipped with a magnet part for fixing the rotating door by a magnetic force when the opening and closing of the rotating door, The magnet unit, An opening magnet part which fixes the rotating door when the opening is opened; When the opening is closed is made of a closed magnet for fixing the rotating door, The open magnet part It is made of a first magnet mounted to any one of the rotating door or the base, and a second magnet or magnetic material attached to the other and in contact with the first magnet, The closed magnet portion, The camera lens door opening and closing device, characterized in that consisting of a third magnet mounted to any one of the rotating door or the base, and a fourth magnet or magnetic material attached to the other and in contact with the third magnet. The method of claim 1, The rotating door or the base is equipped with a magnet part for fixing the rotating door by a magnetic force when the opening and closing of the rotating door, The magnet unit, An opening magnet part which fixes the rotating door when the opening is opened; When the opening is closed is made of a closed magnet for fixing the rotating door, The open magnet portion, A fifth magnet mounted on any one of the rotary door or the base, and a sixth magnet or magnetic body mounted on the other one to contact the fifth magnet, The closed magnet portion, A camera lens door opening and closing device comprising a seventh magnet mounted to one of the first rotating door and the second rotating door, and an eighth magnet or a magnetic material attached to the other and contacting the seventh magnet.

Images