KR20080104862A - Apparatus for opening and closing lens of camera - Google Patents

Abstract

A camera lens opening/shutting device is provided to protect a camera lens, open/shut the camera lens with a simple structure and effectively perform waterproof and vibration-proof functions of the camera lens. A camera lens opening/shutting device includes a case(110) having an opening(110a), a motor(120) set in the case, a driving gear(140) which is set in the case and connected with a driving shaft of the motor and transfers the driving force of the motor, and a gear type shutter(150) which is arranged in the case and connected with the driving gear, has an opening(150a) corresponding to the opening of the case, receives the driving force of the motor through the driving gear, rotates forward and reverse according to the driving force to open/shut the opening of the case.

Description

Apparatus for opening and closing lens of camera}

1 is an exploded perspective view showing an opening and closing device of a lens for a camera according to an embodiment of the present invention;

2 to 5 are plan views sequentially showing the closing process of the opening and closing device of the lens for the camera according to an embodiment of the present invention,

2 is a plan view showing a state in which the opening hole of the case is opened by the opening and closing device of the lens for the camera according to an embodiment of the present invention;

3 is a plan view showing a state in which the opening hole of the case of Figure 2 partially closed;

4 is a plan view illustrating a state in which one end of the torsion spring of FIG. 3 is in contact with the stopper; And,

FIG. 5 is a plan view illustrating a state in which the opening hole of the case of FIG. 4 is closed and the switch is turned on and the motor is turned off.

 Explanation of symbols on the main parts of the drawings

110: case 110a: opening hole

112: stopper 120: motor

130: Worm 140: Drive gear part (torsion spring)

150: gear shutter 150a: opening of the gear shutter

152: gear portion of the gear-type shutter 153: lever portion

153a: Opening protrusion 153b: Closed protrusion

160: torsion spring 161: winding portion of the torsion spring

162: one end of the torsion spring 163: the other end of the torsion spring

180: switch 183: operation projection

The present invention relates to an opening and closing device for a lens for a camera, and more particularly, to a lens opening and closing device for a camera having a simple structure, miniaturization and good operating sensitivity while protecting the lens and minimizing foreign material inflow.

In general, when driving a vehicle, the front situation as well as the rear situation are very important factors.In particular, in the case of a lane change or reversing, the rear and rear left and right situations are clearly recognized and then the Only by changing or reversing can the risk of an accident be prevented.

In the case of changing lanes or reversing during driving of such lanes, the driver of the rear and rear sides of the rear vehicle may be properly positioned after the driver judges the situation of the rear or rear sides through both side mirrors protruding on both sides of the vehicle body or the room mirrors mounted in the room. When the vehicle is in a safe state or when it is determined that there are no obstacles in the rear, a lane change or reverse is performed.

However, when the driver is a beginner, it is very difficult to determine the situation of the rear by looking at the side mirror and the room mirror while driving, and not only cause an accident such as a collision, but also it is difficult to reliably recognize the obstacle behind the vehicle.

To this end, recently, a camera is installed at the rear of the vehicle to photograph rear traffic information and a subject, and display it on a monitor provided in the interior of the vehicle to monitor traffic conditions in the rear blind spot to help drive safely.

However, as described above, the camera installed on the rear of the vehicle has a problem in that it is impossible to perform its role because foreign matters are introduced into the lens or damaged by external force.

The present invention has been made to solve the above problems, the object of which is to protect the lens for the camera and to minimize the inflow of foreign matter to the lens.

Another object of the present invention is to simplify and downsize the structure of the opening and closing device of a lens for a camera.

Another object of the present invention is to improve the operation sensitivity of the opening and closing device of the lens for the camera.

In one embodiment of the present invention for achieving the above object, a case formed with an opening for opening the lens for the camera; A motor installed in the case; A drive gear unit installed in the case so as to be interlocked with a drive shaft of the motor and transmitting a driving force of the motor; An opening hole is installed in the case so as to be interlocked with the driving gear part, and an opening hole corresponding to the opening hole of the case is formed, and the driving hole of the motor is forward and reversely rotated to receive the opening hole of the case. It provides an opening and closing device of the lens for the camera, including; gear shutter for opening and closing.

The opening and closing device of the lens for the camera may further include an elastic support member to allow the gear-type shutter to be elastically supported on the rotating shaft.

The elastic support member may include a torsion spring having a center winding unit installed on a rotating shaft of the gear shutter, and one end and the other end of which are compressively installed on opposite sides of the gear shutter based on the center winding unit. Is preferably.

At this time, one end of the torsion spring is formed to protrude to the outside of the gear-type shutter, the opening and closing device of the lens for the camera protrudes on the inner side of the case of the gear-type shutter to close the opening hole of the case It is preferable to further include a stopper for supporting one end of the torsion spring in the closed state.

In addition, the stopper is formed on the inner surface of the case protruding, it is more preferably formed in a position to compress the torsion spring when the gear-type shutter closes.

The opening and closing device of the lens for the camera further includes a first interlocking means for reducing the rotational force of the motor and transmitting the rotational force of the motor to the drive gear portion, and a second interlocking means for receiving the rotational force of the driving gear portion and transmitting the rotational force to the geared shutter. can do.

Here, the first linkage means, a worm installed on the drive shaft of the motor; And a worm wheel formed at one side of the driving gear part to be connected to the worm, wherein the second interlocking means includes: the worm wheel; And a gear portion formed on the circumference of the geared shutter to rotate in engagement with the teeth of the worm wheel.

The opening and closing device of the lens for the camera may further include on / off means provided in the case to control driving of the motor when the opening hole is completely opened or completely closed.

The on / off means may include: a switch provided in the case and having an actuating protrusion; And an opening protrusion formed on the circumference of the geared shutter and contacting one side of the operation protrusion of the switch to turn on the switch to turn off the motor when the opening hole is fully opened. And a lever part formed of a closing protrusion for contacting the other side of the operation protrusion of the switch to turn on the switch and turning off the motor when the hole is completely closed.

On the other hand, the opening of the gear-type shutter is preferably formed larger than the opening of the case.

Hereinafter, preferred embodiments of the present invention, in which the above object can be specifically realized, are described with reference to the accompanying drawings.

Example

First, the opening and closing device of the lens for a camera according to an embodiment of the present invention with reference to the accompanying Figures 1 and 2 as follows.

1 is an exploded perspective view showing an opening and closing device of the camera lens according to an embodiment of the present invention, Figure 2 is a state in which the opening opening of the case is opened by the opening and closing device of the camera lens according to an embodiment of the present invention It is a top view which shows.

As shown in Figure 1 and 2, the opening and closing device of the lens for the camera according to an embodiment of the present invention, the case 110, the motor 120, the drive gear 140, the gear-type shutter 150 , The elastic support member 160, the first, second interlocking means, on / off means, the stopper 112 and the like.

The case 110 forms an external appearance of the opening and closing device of the camera lens, and an opening hole 110a for opening the camera lens L is formed in the upper center.

In addition, the motor 120 is installed in the case 110 to serve as a driving source for providing a driving force necessary to open and close the opening hole 110a.

In addition, the drive gear 140 is installed in the case 110 so as to interlock with the drive shaft of the motor 120, the worm wheel for transmitting the driving force of the motor 120 to the gear-type shutter 150 ( 140).

At this time, the driving force of the motor 120 is decelerated and transmitted by the first interlocking means to the worm wheel 140, which is the drive gear 140.

That is, the first interlocking means includes a worm 130 installed on the drive shaft of the motor 120 and a worm wheel 140 engaged with the worm 130.

In addition, the gear shutter 150 is installed in the case 110 so as to interlock with the driving gear 140 and an opening hole 150a corresponding to the opening hole 110a of the case 110 is formed. As the driving force of the motor 120 is transmitted through the driving gear 140 to forward and reverse rotation, the opening hole 110a of the case 110 is opened and closed.

At this time, the rotational force of the drive gear unit 140 is transmitted to the gear-type shutter 150 by the second interlocking means.

That is, the second interlocking means is a gear that is formed on the circumference of the worm wheel 140, which is the drive gear 140, and the gear-type shutter 150, and is engaged with the tooth of the worm wheel 140 to rotate. It is made up of a portion 152.

The elastic support member 160 is provided such that the geared shutter 150 is elastically supported on the rotation shaft 151.

That is, the elastic support member 160, the central winding portion 161 is provided on the rotation shaft 151 of the gear-type shutter 150, one end thereof relative to the central winding portion 161. 162 and the other end 163 may be formed of a torsion spring 160 that is compressively installed on opposite sides of the geared shutter.

Here, one end 162 of the torsion spring 160 is formed to protrude to the outside of the gear-type shutter 150, the protruding one end 162 of the torsion spring 160 on the inner surface of the case 110. It is preferable that the stopper 112 corresponding to) is formed.

That is, the stopper 112 is protruded to the inner surface of the case 110, the torsion spring (150) in the closed state of the gear-type shutter 150, the opening hole 110a of the case 110 is closed ( Provided to support one end 162 of 160.

At this time, the stopper 112 is protruded to the inner surface of the case 110, it is more preferably formed in a position to compress the torsion spring 160 when the gear-type shutter 150 is closed. .

Accordingly, the torsion spring 160 elastically supports the gear-type shutter 150 to prevent shaking during the rotational movement of the gear-type shutter 150 and the stopper when the gear-type shutter 150 is closed. Since it is compressed by 112 and the restoring force is increased, it is possible to prevent the gear-type shutter 150 from being forcibly opened and closed by an external force.

The on / off means is provided in the case 110 to control the driving of the motor 120 when the opening hole 110a of the case 110 is completely opened or completely closed.

Here, the on / off means is provided in the case 110 and has a switch 180 having an actuating projection 183, and formed on the circumference of the geared shutter 150 of the geared shutter 150 It consists of a lever portion 153 consisting of an opening protrusion 153a and a closing protrusion 153b which are in contact with one side and the other side of the operation protrusion 183 of the switch 180 during forward and reverse rotation.

That is, when the gear-type shutter 150 rotates in the counterclockwise direction and the opening hole 110a of the case 110 is opened, the opening protrusion 153a of the lever unit 153 may cause the switch 180 to be opened. The operation protrusion 183 is in contact with one side to turn on the switch 180 to turn off the motor 120, and the gear-type shutter 150 rotates in a clockwise direction to the case 110. The closing protrusion 153b of the lever unit 153 is in contact with the other side of the operation protrusion 183 of the switch 180 when the opening hole 110a of the) is closed to turn on the switch 180. ) To turn off the motor 120.

On the other hand, the opening hole 150a of the gear-type shutter 150 is formed larger than the opening hole 110a of the case 110, indicating that the opening hole 110a is opened through the opening hole 150a. It can be done smoothly.

Next, the closing process of the opening and closing device of the lens for the camera according to an embodiment of the present invention with reference to the accompanying Figures 2 to 5 as follows.

2 to 5 are plan views sequentially showing the closing process of the opening and closing device of the camera lens according to an embodiment of the present invention, Figure 2 is a case by the opening and closing device of the camera lens according to an embodiment of the present invention Figure 3 is a plan view showing an open hole of the state, Figure 3 is a plan view showing a state in which the opening hole of the case of Figure 2 partially closed, Figure 4 is a state in which one end of the torsion spring of Figure 3 is in contact with the stopper FIG. 5 is a plan view illustrating a state in which the opening hole of the case of FIG. 4 is closed and the switch is turned ON to turn off the motor.

As shown in FIG. 2, when the user operates the opening / closing device of the camera lens to close the camera lens L (see FIG. 1) in an open state, the motor 120 is driven to drive the worm 130. As the worm wheel 140 rotates counterclockwise while rotating, the gear-type shutter 150 rotates clockwise through the gear unit 152 engaged with the worm wheel 140 as the worm wheel 140 rotates counterclockwise. Rotate

Therefore, as the gear-type shutter 150 rotates clockwise, the opening hole 110a of the case 110 starts to close.

At this time, as the gear shutter 150 rotates, the switch 180 is turned off as the opening protrusion 153a of the lever unit 153 is released from the operation protrusion 183 of the switch 180. .

Next, as shown in FIG. 3, when the motor 120 is continuously driven in the state of FIG. 2, the gear unit 152 of the worm 130, the worm wheel 140, and the geared shutter 150 may be moved. Through the interlocking action, the gear-type shutter 150 continuously rotates in the clockwise direction, and the switch 180 keeps being turned off.

At this time, the torsion spring 160 that is the elastic support member 160 elastically supports the geared shutter 150 to smoothly maintain the rotational movement of the geared shutter 150.

Next, as shown in FIG. 4, when the motor 120 is continuously driven in the state of FIG. 3, the gear-type shutter 150 continuously rotates in a clockwise direction, and the protrusion of the torsion spring 160 is performed. One end 162 contacts the stopper 112 protruding from the inner surface of the case 110, and the switch 180 keeps being turned off.

At this time, the opening hole 110a of the case 110 is almost closed by the gear-type shutter 150.

next. As shown in FIG. 5, when the motor 120 is continuously driven in the state of FIG. 4, the torsion spring 160 is compressed to increase the restoring force, and the closing protrusion 153b of the lever unit 153 is As the switch 180 contacts the other side of the operation protrusion 183, the switch 180 is turned on and the motor 120 is turned off to stop.

Accordingly, the geared shutter 150 is stopped from rotating, and the opening hole 110a of the case 110 is completely closed by the geared shutter 150.

In this case, the gear type shutter 150 is elastically supported by the torsion spring 160 to prevent shaking during rotation, and is prevented from being forcibly opened or closed even when an external force is generated by the restoring force of the torsion spring 160.

On the other hand, since the opening process of the opening and closing device of the lens for the camera proceeds in the reverse order of the closing process, a detailed description thereof will be omitted.

Although the embodiments have been described above, it will be apparent to those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope thereof.

Accordingly, the above-described embodiments should be considered as illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are included within the scope of the present invention.

As described above, according to the present invention, the lens for the camera is opened only when the lens for the camera is used, thereby minimizing the inflow of foreign substances and effectively protecting from the outside.

According to the present invention, the structure of the opening and closing device of the camera lens can be simplified and downsized by opening and closing the lens by the minimum rotational movement of the geared shutter having the motor as the driving source and the opening hole corresponding to the opening hole of the case. There is an advantage to this.

In addition, according to the present invention, it is possible to elastically maintain the closed state of the gear-type shutter through the elastic support member, by preventing the opening of the gear-type shutter open by the external force in the state in which the opening hole of the case is closed There is an advantage that can effectively perform the waterproof and dustproof function of the lens for the camera.

In addition, according to the present invention, the rotation of the gear-type shutter can be precisely adjusted by the interlocking action according to the gear ratio, the motor as a drive source, there is an advantage that can improve the operating sensitivity of the opening and closing device of the lens for the camera.

Claims (10)

A case in which an opening for opening the lens for the camera is formed; A motor installed in the case; A drive gear unit installed in the case so as to be interlocked with a drive shaft of the motor and transmitting a driving force of the motor; An opening hole is installed in the case so as to be interlocked with the driving gear part, and an opening hole corresponding to the opening hole of the case is formed. A gear shutter for opening and closing; Opening and closing device of the lens for the camera comprising a. The method of claim 1, The camera lens opening and closing device further comprises an elastic support member to allow the gear-type shutter to be elastically supported on the rotation axis. The method of claim 2, The elastic support member, A lens for a camera, wherein a center winding part is provided on a rotation axis of the gear shutter, and a torsion spring is provided so that one end and the other end of the gear winding shutter can be compressed on opposite sides of the gear shutter based on the center winding part. Switchgear. The method of claim 3, One end of the torsion spring is formed to protrude to the outside of the geared shutter, And a stopper protruding from the inner surface of the case and supporting one end of the torsion spring in the closed state of the geared shutter in which the opening hole of the case is closed. The method of claim 4, wherein The stopper is, Protrudingly formed on the inner surface of the case, the opening and closing device of the lens for the camera, characterized in that formed in a position to compress the torsion spring when the gear-type shutter closes. The method of claim 1, And a second interlocking means for reducing the rotational force of the motor and transmitting the first interlocking means to the driving gear unit and a second interlocking unit for receiving the rotational force of the driving gear unit and transmitting the rotational force to the geared shutter. The method of claim 6, The first interlocking means, A worm installed on a drive shaft of the motor; And And a worm wheel formed at one side of the driving gear part to be connected to the worm. The second interlocking means, The worm wheel; And And a gear part formed on the circumference of the gear-type shutter so as to rotate in engagement with the teeth of the worm wheel. The method of claim 1, And an on / off means provided in the case to control driving of the motor when the opening is completely opened or completely closed. The method of claim 8, The on / off means, A switch provided in the case and having an actuating protrusion; And An opening protrusion formed on the circumference of the geared shutter and contacting one side of the operation protrusion of the switch to turn on the switch to turn off the motor when the opening hole is fully opened; A lever part made of a closing protrusion contacting the other side of the operation protrusion of the switch to turn off the motor by turning on the switch when the door is completely closed; Device. The method of claim 1, The opening hole of the gear-type shutter is larger than the opening hole of the case, the opening and closing device of the camera lens.

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