KR100780433B1 - An automatic movement protecting apparatus for image photographing devices of cellular phone - Google Patents

Abstract

An automatic protecting device of a camera for a portable terminal is provided to open and close the front unit of the camera automatically through magnets and a coil, thereby preventing foreign substance from permeating into the inside of the camera. A shield plate(10) has the first opening hole(12) for opening a front part of a lens. Blades(20) open/close the first opening hole(12) by sliding actions, and has cam projections(22). Rotating plates(30) are equipped with the second opening holes for opening a front part of the lens, and have cam holes(36) for opening/closing the blades(20) by moving the cam projections(22) during self rotation. A cover(50) combines the rotating plates(30) with the shielding plate(10) in rotatable state. A core(40) is fixed to the shield plate(10). A coil(42) forms the core(40) as an electromagnet when power is applied, by being wound on the core(40). Magnets(44) generate magnetic forces toward the core(40).

Description

Automatic protection of camera for mobile terminal {AN AUTOMATIC MOVEMENT PROTECTING APPARATUS FOR IMAGE PHOTOGRAPHING DEVICES OF CELLULAR PHONE}

1 is an exploded perspective view of a protection device according to an embodiment of the present invention;

Figure 2 is an exploded perspective view of another angle of the protection device shown in Figure 1,

3 is a cross-sectional view of a core of the protection device shown in FIG. 1 attached to a magnet in one direction;

4 is a partially enlarged view of FIG. 3;

5 is a cross-sectional view of the core shown in FIG.

6 is a partially enlarged view of FIG. 5;

7 is a cross-sectional view of the core shown in FIG. 3 attached to the magnet on the opposite side;

8 is a partially enlarged view of FIG. 7.

<Explanation of symbols for main parts of drawing>

10: shielding plate 12: first opening

20: blade 22: cam projection

30: rotating plate 32: second open hole

36: cam ball 37: incision

38: insertion hole 50: cover

52: third open hole 54: guide ball

The present invention relates to a camera protection device for a mobile terminal, and more particularly, is installed in the camera for a mobile terminal, and automatically opens the camera only when the video recording function is used and closes the camera when the video recording function is not used. This effectively prevents foreign matter from penetrating into the camera.

A small communication device such as a mobile phone is equipped with a small camera and functions to capture an image of a subject.

In the past, a single focus camera was used as the camera for a mobile terminal.

In the monofocal type camera, a plurality of lenses through which an image of a subject is transmitted and an image sensor for capturing the transmitted image are fixed integrally.

In the case of such a camera, all the components were fixed to the inside of the case and blocked from the outside, and only the frontmost lens was exposed to the outside.

Therefore, only the front lens was dusty, and there was a risk of blurring the image quality of the image captured by the image sensor. When the user cleaned the front lens, the user could obtain a clear image.

However, recently, at the request of users, a function of performing auto focusing and zooming in a camera for a mobile terminal has been added.

In order to perform such auto focusing and zooming, the distance between each lens and the distance between the image sensors must be adjusted, and each lens must be mechanically driven.

Therefore, the camera of such a functional portable terminal has a complicated driving unit mounted therein, so that the interior of the camera for the portable terminal of the past cannot be closed unlike that of the camera of the portable terminal of the past.

As a result, foreign matter penetrates into the camera through an opening that is opened to allow light to pass through, and the foreign matter penetrates the operating performance of components of the driving unit. Particularly, when fine dust adheres to the image sensor, the image quality is extremely reduced, which is incomparable with foreign matter on the lens. In addition, when dust adheres to the image sensor, the dust cannot be cleaned and the entire camera cannot be used.

Therefore, there is a need for a device that blocks foreign matter from the opening before foreign matter penetrates into the camera.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to be installed in a camera for a portable terminal, by opening the camera only when using the image capturing function and closing the camera when not using the image capturing function. This is to effectively prevent foreign matter from penetrating into the camera.

In the present invention for achieving the above object, in the front of the lens of the camera of the portable terminal camera protection device for preventing a foreign matter from penetrating into the camera,

A shielding plate installed in a front portion of the lens of the camera and having a first opening for opening the front of the lens;

A blade having a cam protrusion to open and close the first opening hole by a sliding operation;

Is rotatably coupled to the shield plate, a second opening hole for opening the front of the lens is formed in the center of rotation, is formed to be coupled to the cam projection and for opening and closing the blade by moving the cam projection during its own rotation A rotating plate having a cam ball;

A third open hole corresponding to the second open hole is formed, and a cover for coupling the rotating plate to the shielding plate in a rotatable state;

A core fixed to one side of the shielding plate or the rotating plate;

A coil wound around the core to make the core an electromagnet upon application of power;

A control unit for supplying power to the coil; And

It provides a camera protection device for a portable terminal comprising a magnet for generating a magnetic field toward the core is fixed to the side of the shielding plate or the rotating plate is not fixed to the core.

The cover is formed with a guide ball for guiding the cam projection to move in a straight line.

The pair of blades are installed in a symmetrical position, and the cam protrusion and the cam hole are each paired.

The magnet is composed of a pair disposed respectively on both sides of the core.

The rotating plate is formed with a cutout having a space capable of flowing to both sides with the core interposed therebetween, and insertion holes into which the magnet is inserted are formed at both edges of the cutout.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view of a protection device according to an embodiment of the present invention, Figure 2 is another angle exploded perspective view of the protection device shown in FIG.

The protection device shown in this figure is provided in the front part of the lens of the camera for a portable terminal and is used as a camera protection apparatus for a portable terminal for preventing foreign matter from penetrating into the camera.

The protection device for a camera comprises: a shielding plate (10) provided at a front portion of a lens of a camera and having a first opening hole (12) for opening the front of the lens; A blade 20 having a cam protrusion 22 to open and close the first opening 12 in a sliding operation; It is rotatably coupled to the shield plate 10, the second opening hole 32 for opening the front of the lens is formed in the center of rotation, is formed to be coupled to the cam projection 22, and cam projection 22 during its own rotation A rotating plate 30 having a cam hole 36 for moving the blade 20 to open and close the blade 20; A third open hole 52 corresponding to the second open hole 32 is formed, and a cover 50 for coupling the rotating plate 30 to the shielding plate 10 in a rotatable state; A core 40 fixed to the shield plate 10; A coil 42 wound around the core 40 to make the core 40 an electromagnet upon application of power; A control unit for supplying power to the coil 42; And a magnet 44 fixed to the rotating plate 30 to generate a magnetic field toward the core 40.

A pair of blades 20 are provided in a symmetrical position, and the cam protrusions 22 and the cam holes 36 are each paired.

By using the two blades 20 as described above, the speed of opening and closing the lens is doubled. In addition, as the two blades 20 are used, the size of each blade 20 can be reduced in half, thereby enabling installation in a narrow space.

The cover 50 is formed with a guide hole 54 for guiding the cam protrusion 22 to move in a straight line.

The magnets 44 consist of a pair which are respectively disposed on both sides of the core 40. Therefore, each magnet 44 can only move to the extent of contact with each side of the core 40, the rotation angle of the rotating plate 30 is limited.

Each magnet 44 is arranged to face the same polarity. Since both ends of the core 40 have different polarities, the core 40 receives an attraction force from one side of the magnets 44 on both sides and a repulsion force from the other side. Therefore, the rotational force applied to the rotating plate 30 is doubled.

The rotating plate 30 has a cutout 37 having a space capable of flowing to both sides with the core 40 interposed therebetween, and insertion holes into which magnets 44 are inserted at both edges of the cutout 37. 38 is formed.

Such a protective device is installed in front of a small camera mounted on a mobile phone or the like to prevent foreign matter from penetrating into the lens unit.

The control unit for applying power to the coil 42 is built in the main body of the mobile phone.

Hereinafter, the operation of the protective device having the configuration as described above.

Usually, the protection device maintains a state in which the pair of blades 20 closes the front of the lens and cannot photograph an image.

3 is a cross-sectional view of a core of the protection device illustrated in FIG. 1 attached to a magnet in one direction, and FIG. 4 is a partially enlarged view of FIG. 3.

And when using the camera, the protection mounted on the camera must be opened. To this end, the control unit applies power to the coil 42 to magnetize the core 40.

FIG. 5 is a cross-sectional view of the core shown in FIG. 3 moving, and FIG. 6 is a partially enlarged view of FIG. 5.

When the core 40 is magnetized, an N pole is formed at one side and an S pole is formed at the other side. And if the magnet 44 on both sides toward the core 40 is the N pole, the magnet 44 located in front of the S pole of the core 40 is attracted to the core 40, the opposite magnet 44 is Since it is the same polarity as the front core 40, it is pushed together.

Accordingly, while the rotating plate 30 rotates, the cam hole 36 moves the cam protrusion 22 horizontally to move the blade 20 in the opening direction. The cam hole 36 converts the rotational motion of the rotating plate 30 into a linear motion of the blade 20. The guide hole 54 of the cover 50 guides the cam protrusion 22 to move in a straight line.

7 is a cross-sectional view of the core shown in FIG. 3 attached to the magnet on the opposite side, and FIG. 8 is a partially enlarged view of FIG. 7.

A pair of blades 20 are simultaneously opened in the first open hole 12 to open the lens, and the light enters the lens of the camera through the open first open hole 12 to take an image of the camera. .

On the other hand, when not using the camera, the control unit applies a reverse current to the coil 42. Accordingly, the polarity of the core 40 is reversed, and the magnet 44 on the opposite side is attached to the core 40.

Accordingly, the operation of closing the lens of the pair of blades 20 is performed in the reverse order to the opening process.

In this state, the core 40 remains attached to the magnet 44 even when no current is supplied to the coil 42.

As such, when the first opening 12 is closed, the inside of the camera for the portable terminal is closed to prevent foreign substances from flowing into the camera of the portable terminal.

As described above, the protection device of the present invention automatically opens the camera only when the image capturing function is used, and automatically closes the camera when the image capturing function is not used, whereby foreign matter penetrates into the camera. There is an effect that can be prevented.

In the above, the present invention has been described as an embodiment, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the above-described claims, and has a general knowledge in the field of the present invention without departing from the gist of the present invention. Anyone who grows up will be able to make various variations.

Claims (5)

In the camera protection device for a mobile terminal to be installed in the front of the lens of the camera for a portable terminal to prevent foreign matter from penetrating into the camera, A shielding plate installed in a front portion of the lens of the camera and having a first opening for opening the front of the lens; A blade having a cam protrusion to open and close the first opening hole by a sliding operation; Is rotatably coupled to the shield plate, a second opening hole for opening the front of the lens is formed in the center of rotation, is formed to be coupled to the cam projection and for opening and closing the blade by moving the cam projection during its own rotation A rotating plate having a cam ball; A cover for forming a third open hole corresponding to the second open hole and coupling the rotating plate to the shielding plate in a rotatable state; A core fixed to one side of the shielding plate or the rotating plate; A coil wound around the core to make the core an electromagnet upon application of power; A control unit for supplying power to the coil; And And a magnet for generating a magnetic field toward the core, the magnet being fixed to the side of the shielding plate or the rotating plate to which the core is not fixed. The apparatus of claim 1, wherein the cover has a guide hole for guiding the cam protrusion to move in a straight line. The device of claim 1, wherein a pair of blades is installed at symmetrical positions, and the cam protrusion and the cam hole are each paired. The apparatus of claim 1, wherein the magnet comprises a pair of magnets disposed on both sides of the core. The camera of claim 1, wherein the rotating plate has a cutout portion having a space capable of flowing to both sides with the core interposed therebetween, and insertion holes into which the magnet is inserted are formed at both edges of the cutout portion. Protection.

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