WO2010087583A2

WO2010087583A2 - Camera lens door opening-and-closing device

Info

Publication number: WO2010087583A2
Application number: PCT/KR2009/007767
Authority: WO
Inventors: 류재욱; 이영표; 방현철; 김상후; 이덕열
Original assignee: (주)하이소닉
Priority date: 2009-01-30
Filing date: 2009-12-24
Publication date: 2010-08-05
Also published as: KR100984337B1; WO2010087583A3; KR20100088439A

Abstract

The present invention is to provide a camera lens door opening-and-closing device with improved durability and quality by preventing parts installed in a holder from separating through a gap between the holder and a cover. In order to accomplish the purpose, the camera lens door opening-and-closing device comprises: the holder with a lower opening, the cover which is mounted on top of the holder and has an upper opening connected to the lower opening of the holder, a motor installed in the holder, a gear member installed in the holder under the cover which rotates by being connected to the motor, and a door member which is installed and slides on the holder under the cover and has a rack gear on a side surface to engage the gear member and slide when the gear member rotates so as to open and close the lower and upper openings. The holder has a fixing shaft on which the gear member is inserted and mounted, and the cover has a fixing plate which is bent toward the fixing shaft and contacts the top of the fixing shaft to prevent separation of the gear member.

Description

Switchgear for camera lens door

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 which is disposed in front of the camera lens is automatically opened and closed when power is applied.

With the development of photography and digital technology, mobile phones or PDAs equipped with camera devices 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 were designed to expose the lens to the outside. In this case, the surface of the lens was often dusty or foreign, causing damage to the lens or preventing clear pictures.

Thus, PDAs or mobile phones with camera lens doors have been developed.

At this time, the opening and closing method of the camera lens door has been proposed a mechanical opening and closing method of opening and closing by a mechanical interlock according to the user's operation, and an automatic opening and closing method of opening and closing automatically according to a specific condition.

The opening and closing device according to the dual automatic opening and closing method includes a holder and a cover having an opening, a motor mounted on the holder, a plurality of gear members mounted on the holder and rotating by the motor, and mounted on the holder. It includes a door member in contact with the member to open and close the opening when the motor rotates.

In particular, the cover is mounted on the upper side of the holder to prevent the gear member mounted inside the holder from being separated.

That is, the gear member is inserted into the fixed shaft protruding upward from the holder, the cover is adjacent to the upper surface of the fixed shaft to prevent the gear member from being separated from the fixed shaft.

The cover is mainly made of a thin metal plate to reduce the overall size of the product, the thin metal plate is difficult to maintain the dimension or flatness due to the characteristics of the material.

Therefore, the gear members having a small size are separated from the gap generated between the fixed shaft and the cover when the cover is deflected upward, thereby degrading the overall durability and quality of the product.

The present invention has been made to solve the above-described problems, to provide a camera lens door opening and closing device to improve the overall durability and quality by preventing the components mounted on the holder from being separated through the gap between the holder and the cover. There is a purpose.

In order to achieve the above object, the camera lens door opening and closing device of the present invention includes a holder having a lower opening; A cover mounted on an upper side of the holder and having an upper opening configured to communicate with the lower opening; A motor mounted to the holder; A gear member mounted to the holder at a lower side of the cover and connected to the motor to rotate; A door member slidably mounted to the holder at the lower side of the cover, the rack gear being engaged with the gear member at a side thereof, and sliding to rotate the gear member to open and close the lower opening and the upper opening; The holder is formed with a fixed shaft is inserted into the gear member is mounted, the cover is formed with a fixed plate bent in the fixed shaft direction, the fixing plate is in contact with the upper surface of the fixed shaft to prevent the departure of the gear member do.

One side of the fixing plate is connected to the cover, and the other side of the fixing plate is spaced apart from the cover by a spaced groove formed in the vertical direction.

The motor comprises a step motor to control the moving distance of the door member.

The outer surface of the cover is bent in the holder direction is formed hook portion is hooked with the holder, the escape groove is formed on both sides of the hook portion.

A locking groove is formed on an inner surface of the holder, and a locking portion is formed in the cover, and the locking portion is inserted into the locking groove. The locking portion includes: an extension portion bent vertically in the holder direction; A support part vertically bent in parallel with the holder in the extension part and inserted into the locking groove; It is made, including.

First guide rails and second guide rails are formed on both sides of the lower opening in the upper surface of the holder, respectively, in a moving direction of the door member, and a first guide in which the first guide rail is inserted into one end of the door member. A groove is formed, and a second guide groove into which the rack gear and the second guide rail are inserted is formed at the other end of the door member to prevent flow when the door member is moved.

The first guide rail and the second guide rail, the first rail protruding toward the door member and in contact with the lower surface of the door member; A second rail protruding from the first rail toward the door member and inserted into the first guide groove or the second guide groove; A second rail protruding from the first rail toward the door member and inserted into the first guide groove or the second guide groove; It is made, including, the depth of the first guide groove and the second guide groove is greater than the height of the second rail.

And a position sensor mounted on the holder to sense a position of the door member, wherein the door member is disposed above the position sensor when the upper opening portion and the lower opening portion are opened. A reflector is formed to reflect the light.

According to the camera lens door opening and closing device of the present invention as described above has the following effects.

Forming a fixed plate bent in the direction of the fixed shaft in which the gear member is inserted into the cover, the upper surface of the fixed plate and the fixed shaft is in contact, thereby preventing the departure of the gear member to improve the overall durability and quality of the opening and closing device It is effective to let.

One surface of the fixing plate is connected to the cover, and the other surface is spaced apart from the cover by a spaced groove formed in the vertical direction, thereby adding a strong elastic force to the fixing plate to minimize the gap between the fixing plate and the fixing shaft. Can be.

By configuring the motor as a step motor to control the movement distance of the door member, the door member can limit the movement without a separate stopper when opening and closing the lower opening and the upper opening, and the noise caused by the stopper Can be removed.

The hook portion is bent on the outer side of the cover in the holder direction is hooked to the holder is formed, by forming an escape groove on both sides of the hook portion, by bending the hook portion by spaced apart both sides and the cover of the hook portion The effect is to facilitate the work.

The locking portion includes an extension portion vertically bent in the holder direction and a support portion vertically bent in parallel with the holder in the extension portion and inserted into the locking groove, so that the support portion is mounted when the cover is mounted on the holder. Supporting the cover in an upward direction increases the bonding force of the cover, and has an effect of preventing the cover from being separated from the holder.

The first guide groove into which the first guide rail is inserted is formed at one end of the door member, and the second guide groove into which the rack gear and the second guide rail are inserted is formed at the other end of the door member. By guiding both sides of the member there is an effect of reducing the left and right flow during the sliding of the door member.

The first guide rail and the second guide rail protrude in the direction of the door member to contact the lower side of the door member, and protrudes in the direction of the door member from the first rail toward the first guide groove or A second rail is inserted into the second guide groove, but the depth of the first guide groove and the second guide groove are formed larger than the height of the second rail, thereby reducing the thickness of the second rail. It is possible to reduce the friction area between the door member and the upper surface of the first rail, thereby minimizing the total friction area of the door member, the first guide rail and the second guide rail.

When the upper opening portion and the lower opening portion is opened to the door member is formed on the upper side of the position sensor to reflect the signal of the position sensor is formed, thereby accurately recognizing the position of the door member to facilitate the operation It works.

1 is a perspective view of a camera lens door opening and closing device according to an embodiment of the present invention,

Figure 2 is an exploded perspective view of one direction of the opening and closing device for a camera lens door according to an embodiment of the present invention,

3 is another exploded perspective view of the camera lens door opening and closing apparatus according to the embodiment of the present invention;

4 is a cross-sectional view of the opening and closing device for a camera lens door according to the present invention as seen from A-A of FIG.

5 is a cross-sectional view showing a coupling state of the guide rail and the door member according to an embodiment of the present invention,

6 is a cross-sectional view of the opening and closing device for a camera lens door according to the present invention as seen from B-B of FIG.

7 and 8 are operation state diagrams of the opening and closing device for a camera lens door according to an embodiment of the present invention.

1 is a perspective view of a camera lens door opening and closing device according to an embodiment of the present invention, Figure 2 is a one-way exploded perspective view of the camera lens door opening and closing device according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention Another exploded perspective view of the camera lens door opening and closing device according to the present invention, FIG. 4 is a cross-sectional view of the camera lens door opening and closing device according to the present invention as seen from AA of FIG. 1, and FIG. 5 is a guide rail according to an embodiment of the present invention. And a door member coupled to the cross-sectional view, Figure 6 is a cross-sectional view of the camera lens door opening and closing device according to the present invention as seen from BB of FIG.

1 to 6, the opening and closing device for the camera lens door of the present invention is a holder 100, the cover 200, the motor 300, the gear member 400, the door member 500 and the position sensor ( 600).

The holder 100 has a quadrangular shape and has an outer rim protruding upward in an upper surface thereof, and a portion of the holder 100 is protruded in a lower direction so that the motor 300 is inserted into and mounted downward.

In addition, the holder 100 is formed at the front or rear of the lens (not shown) is formed with a lower opening 110 through which the incident light of the lens penetrates.

The lower opening 110 is open in the vertical direction in a rectangular shape.

In addition, the first guide rail 120 and the second guide rail 130 are formed on both sides of the lower opening 110 on the upper surface of the holder 100, respectively.

The first guide rail 120 and the second guide rail 130 are formed long in the moving direction of the door member 500 and protrude upward.

In addition, the holder 100 is formed with a fixed shaft 140 in which the gear member 400 is inserted.

The fixed shaft 140 is formed to protrude upward in a cylindrical shape, the height is similar to the edge of the holder 100.

In addition, a hook protrusion 150 that is hooked with the cover 200 is formed on an outer surface of the holder 100, and an engaging groove 160 supporting the cover 200 in contact with the cover 200 on an inner surface thereof. ) Is formed.

The hook protrusion 150 is formed to protrude on three outer surfaces of the four outer surfaces of the holder 100, respectively, the engaging groove 160 is adjacent to the outer surface is not formed with the hook protrusion 150 The inner side and the lower side of the holder 100 are formed to be open.

The cover 200 is mounted above the holder 100.

The cover 200 is made of a thin metal plate material, the upper opening 210 is in communication with the lower opening 110 is formed.

In addition, the outer surface of the cover 200 is bent in the direction of the holder 100 hook portion 220 is hooked with the holder 100 is formed.

The hook portion 220 has a quadrangular shape and has a hook groove 221 open in a lateral direction so that the hook protrusion 150 of the holder 100 is inserted therein, and among the four outer surfaces of the cover 200. It is formed on each of the three outer surfaces.

In addition, the both sides of the hook portion 220 is formed with a doped groove 225 is opened up and down in a semicircular shape.

The escape groove 225 minimizes a property of the hook portion 220 to be restored during the bending of the hook portion 220 by allowing both sides of the hook portion 220 to be spaced apart from the cover 200 by a predetermined distance. Allow bending at the correct angle.

As described above, the hook portion 220 is bent on the outer surface of the cover 200 in the direction of the holder 100 to be hooked to the holder 100, and the escape grooves are formed on both sides of the hook portion 220. By forming the 225, there is an effect of facilitating the bending work of the hook portion 220 by spacing both sides of the hook portion 220 and the cover 200 by a predetermined interval.

In addition, the cover 200 is provided with a locking portion 230 to be inserted into the locking groove 160 of the holder 100.

Specifically, the locking portion 230 is an extension portion 231 vertically bent in the direction of the holder 100, and vertically bent in parallel with the holder 100 in the extension portion 231 to the locking groove 160 It includes a support portion 232 is inserted into.

As shown in FIG. 6, when the cover 200 is mounted on the holder 100, the support part 232 contacts the top surface of the engaging groove 160 when the cover 200 is mounted on the holder 100. ) Is supported upward.

That is, when the cover 200 is assembled, the support part 232 is first inserted into the locking groove 160 before the cover 200 is hooked to the holder 100, and then the hook part 220 is moved. It is coupled to the hook protrusion 150.

Therefore, the locking portion 230 is in contact with the locking groove 160 in the support portion 232 is applied to the downward direction to support the cover 200 in the upward direction by the reaction, thereby the hook The coupling force of the part 220 and the hook protrusion 150 is increased.

In this way, the engaging portion 230 is vertically bent in the direction of the holder 100, the extension portion 231 and the extension portion 231 vertically bent in parallel with the holder 100 in the locking groove 160 By including the support portion 232 is inserted, when the cover 200 is mounted on the holder 100, the support portion 232 supports the cover 200 in the upward direction of the cover 200 Increasing the coupling force, there is an effect to prevent the cover 200 is separated from the holder 100.

The locking portion 230 is formed on the outer surface of the cover 200 in which the hook portion 220 is not formed.

In addition, the cover 200 is formed with a fixing plate 240 bent in the fixed shaft 140 direction.

The fixing plate 240 has a semicircular shape and one surface is integrally connected to the cover 200, and the other surface is separated from the cover 200.

That is, the fixing plate 240 is formed lower than the upper surface of the cover 200, one surface is formed extending in the cover 200 direction is connected to the cover 200.

In addition, between the fixing plate 240 and the cover 200 is formed a spaced groove 245 is opened in the vertical direction so that the remaining surface except for one surface of the fixing plate 240 is spaced apart from the cover 200.

That is, the separation groove 245 is formed through the remaining surface except for one surface of the fixing plate 240.

The fixing plate 240 is in contact with the upper surface of the fixed shaft 140 of the holder 100 to prevent the gear member 400 inserted into the fixed shaft 140 is separated.

In addition, the fixing plate 240 is formed by bending a portion of the cover 200, the width is small can minimize the bending phenomenon.

As described above, the fixing plate 240 bent in the direction of the fixing shaft 140 is formed on the cover 200, and the upper surface of the fixing plate 240 and the fixing shaft 140 is in contact with the detachment of the gear member 400. By preventing this, the overall durability and quality of the switchgear can be improved.

In addition, by connecting one surface of the fixing plate 240 and the cover 200, and the remaining surface is spaced apart from the cover 200 by the spacer groove 245 formed in the vertical direction, the fixing 240 plate It is possible to minimize the gap between the fixing plate 240 and the fixed shaft 140 by adding a strong elastic force to the.

On the other hand, the motor 300 is mounted to the holder 100, the rotating shaft is disposed in the upward direction, such as the fixed shaft 140 of the holder 100.

The motor 300 is composed of a step motor that can control the rotation angle to control the moving distance of the door member 500 constantly.

In addition, since the motor 300 does not rotate arbitrarily, an external force does not need to be applied to stop the rotation of the motor 300.

As such, by configuring the motor 300 as a step motor to control the moving distance of the door member 500, the door member 500 may open and close the lower opening 110 and the upper opening 210. When it is possible to limit the movement without a separate stopper, it can eliminate the noise caused by the stopper.

In addition, the motor 300 is connected to the gear member 400 to add a rotational force to the gear member 400.

In detail, the gear member 400 includes a first gear 410 coupled to the rotation shaft of the motor 300, and a second insert inserted into the fixed shaft 140 and rotating in contact with the first gear 410. A gear 420 and a third gear 430 inserted into the fixed shaft 140 and contacting the second gear 420 and the door member 500 to linearly move the door member 500. .

In particular, the third gear 430 is formed with two gear layers of different radius up and down, respectively, the upper gear is engaged with the second gear 420, the lower gear is formed in the door member 500 Meshes with the formed rack gear 530.

The gear members 400 are disposed below the cover 200 to be adjacent to the fixing plate 240 of the cover 200.

On the other hand, the door member 500 which is slid by the gear member 400 is mounted to slide in the holder 100 in the lower side of the cover 200 in the shape of a square plate.

In detail, a first guide groove 510 into which the first guide rail 120 of the holder 100 is inserted is formed at one lower side of the door member 500, and the second guide rail is formed at the other lower side of the door member 500. A second guide groove 520 into which the 130 is inserted is formed.

In particular, the rack gear 530 meshing with the third gear 430 is formed at the other end of the door member 500 in which the second guide groove 520 is formed.

In addition, both ends of the door member 500 in which the first guide groove 510 and the second guide groove 520 are formed are protruded toward the cover 200 to be adjacent to the lower surface of the cover 200. .

The door member 500 is linearly moved by the first guide rail 120 and the second guide rail 130 when the third gear 430 is rotated by the rack gear 530. The lower opening 110 and the upper opening 210 are opened and closed.

As such, the first guide groove 510 is formed at one end of the door member 500 to insert the first guide rail 120, and the rack gear 530 and the other end of the door member 500 are formed at the other end of the door member 500. By forming the second guide groove 520 into which the second guide rail 130 is inserted, both sides of the door member 500 are guided to reduce the left and right flow when the door member 500 is slid.

Meanwhile, the first guide rail 120 and the second guide rail 130 inserted into the first guide groove 510 and the second guide groove 520 of the door member 500 are the door members. The first rail 125 protrudes in the direction of 500 and contacts the lower surface of the door member 500, and protrudes from the first rail 125 in the direction of the door member 500 to the first guide groove ( 510 or the second rail 126 inserted into the second guide groove 520.

At this time, the depth of the first guide groove 510 and the second guide groove 520 is formed larger than the height of the second rail 126, the upper surface of the second rail 126 and the first guide groove ( The upper surface of the 510 and the upper surface of the second guide groove 520 do not contact.

That is, the door member 500 is in contact with the lower surface of the door member 500 and the upper surface of the first rail 125, the first guide groove 510 and the second guide groove 520 and the first 2 Both sides of the rail 126 abut and slide.

Of course, in the related art, as shown in FIG. 5A, the first rail 125 does not exist, and the first guide groove 510 and the second guide groove 520 are upper surfaces of the second rail 126. And sliding in contact with both sides.

In this case, the friction area between the first guide groove 510 and the second guide groove 520 and both side surfaces of the second rail 126 of the prior art is the first guide groove 510 and the first of the present invention. The friction area between the two guide grooves 520 and both side surfaces of the second rail 126 is the same.

However, the prior art is the first guide groove 510 and the second guide groove in order to reduce the total friction area of the door member 500, the first guide rail 120 and the second guide rail 130. If the friction area L1 between 520 and the upper surface of the second rail 126 is reduced, the thickness of the second rail 126 becomes thin, which makes it difficult to manufacture and easily bends or breaks due to external force.

On the contrary, when the friction area L1 between the first guide groove 510 and the second guide groove 520 and the upper surface of the second rail 126 is increased, the resistance during the movement of the door member 500 increases. The motor 300 is heavily loaded.

Therefore, as shown in FIG. 5 (b), the second rails may be formed by forming the first rail 125 so that the upper surface of the first rail 125 and the door member 500 contact each other. The door member 500 and the first guide rail 120 may be reduced by reducing the friction area L2 between the door member 500 and the upper surface of the first rail 125 without reducing the thickness of the metal rod 126. And minimizing the overall friction area of the second guide rail 130.

In addition, the door member 500 is formed with a reflecting plate 540 reflecting the signal of the position sensor 600.

The reflective plate 540 is formed to protrude in the horizontal direction from the other end of the door member 500 in which the second guide groove 520 is formed so that the door member 500 has the lower opening 110 and the upper opening 210. When opened) is disposed above the position sensor 600.

The position sensor 600 is mounted to the holder 100, and when the reflecting plate 540 is disposed above the position sensor 600, the position sensor 600 reflected by the reflecting plate 540. Detects the open and close state of the lower opening 110 and the upper opening 210 by detecting a signal.

In this way, the position sensor 600 is mounted on the holder 100, and when the lower opening 110 and the upper opening 210 are opened to the door member 500, the position sensor 600 is positioned on the upper side of the position sensor 600. The reflecting plate 540 is disposed to reflect the signal of the position sensor 600, thereby accurately recognizing the position of the door member 500, thereby facilitating the operation.

The following describes the operating state of the camera lens door opening and closing device according to the above configuration.

As shown in FIG. 7, the door member 500 is disposed above the lower opening 110 of the holder 100 to block the lower opening 110.

At this time, the position sensor 600 does not recognize the signal because there is no reflector 540 on the top.

In addition, since the motor 300 is a step motor, the gear member 400 and the door member 500 connected to the motor 300 are not arbitrarily driven by an external force.

As shown in FIG. 8, when power is applied to the motor 300 so that the first gear 410 rotates counterclockwise, the second gear 420 rotates clockwise, and the third gear 430 moves the door member 500 to the left while rotating counterclockwise to open the lower opening 110 and the upper opening 210.

At this time, the door member 500 is guided to slide by the first guide rail 120 and the second guide rail 130, the upper surface is adjacent to the cover 200 first guide rail 120 ) And the second guide rail 130 are not separated.

Similarly, the first gear 410, the second gear 420, and the third gear 430 also have the fixing plate 240 adjacent to the cover 200, such that the motor 300 and the fixed shaft 140 are adjacent to each other. Does not deviate from

In addition, when the door member 500 moves to the left side, the reflecting plate 540 is disposed above the position sensor 600.

Therefore, the position sensor 600 recognizes that the lower opening 110 and the upper opening 210 are opened by the door member 500 to stop the rotation of the motor 300.

As described above, the fixing plate 240 bent in the direction of the fixing shaft 140 is formed on the cover 200, and the upper surface of the fixing plate 240 and the fixing shaft 140 is in contact with the detachment of the gear member 400. By preventing the, there is an effect that the overall durability and quality of the switchgear is improved.

The opening and closing device for a camera lens door 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.

The present invention is applied to the opening and closing device for the camera lens door, to prevent the components mounted on the holder is separated through the gap between the holder and the cover to improve the overall durability and quality.

Claims

A holder having a lower opening;

A cover mounted on an upper side of the holder and having an upper opening configured to communicate with the lower opening;

A motor mounted to the holder;

A gear member mounted to the holder at a lower side of the cover and connected to the motor to rotate;

A door member slidably mounted to the holder at the lower side of the cover, the rack gear being engaged with the gear member at a side thereof, and sliding to rotate the gear member to open and close the lower opening and the upper opening; It's done,

The holder is provided with a fixed shaft for inserting the gear member,

The cover is formed with a fixing plate bent in the direction of the fixed shaft, the fixing plate is in contact with the upper surface of the fixed shaft to prevent the lens lens opening and closing device, characterized in that the departure.
The method of claim 1,

One side of the fixing plate is connected to the cover, the other side of the camera lens door opening and closing device, characterized in that spaced apart from the cover by the groove formed in the vertical direction open.
The method of claim 1,

The motor is a camera lens door opening and closing device, characterized in that consisting of a step motor to control the movement distance of the door member.
The method according to any one of claims 1 to 3,

The outer surface of the cover is bent in the holder direction is formed hook portion that is hooked with the holder,

Camera lens door opening and closing device characterized in that the escape groove is formed on both sides of the hook portion.
The method according to any one of claims 1 to 3,

A locking groove is formed on the inner side of the holder,

The cover is provided with a locking portion inserted into the locking groove,

The locking portion,

An extension portion bent vertically in the holder direction;

A support part vertically bent in parallel with the holder in the extension part and inserted into the locking groove; Camera lens door opening and closing device characterized in that comprises a.
The method according to any one of claims 1 to 3,

First and second guide rails are formed on both sides of the lower opening, respectively, on the upper surface of the holder along the moving direction of the door member.

One end of the door member is formed with a first guide groove into which the first guide rail is inserted,

A second guide groove into which the rack gear and the second guide rail are inserted is formed at the other end of the door member, thereby preventing the flow of the door member when moving the camera lens door.
The method of claim 6,

The first guide rail and the second guide rail,

A first rail protruding toward the door member and contacting a lower side of the door member;

A second rail protruding from the first rail toward the door member and inserted into the first guide groove or the second guide groove; Including but not limited to,

And a depth of the first guide groove and the second guide groove is greater than a height of the second rail.
The method according to any one of claims 1 to 3,

Is mounted to the holder is made further comprises a position sensor for detecting the position of the door member,

The door member, the opening and closing device for a camera lens door, characterized in that the reflection plate which is disposed on the upper side of the position sensor and reflects the signal of the position sensor when the upper opening and the lower opening is opened.