KR102301956B1 - Optical disc device - Google Patents

Abstract

The present invention relates to an optical disk device. An optical disk device according to an embodiment includes a chassis, a tray, and a locking module, the locking module comprising: a lock lever including a hook for engaging with a locking protrusion formed on the chassis and rotatably installed; a first link lever and a second link lever for receiving a straight force from the optical pickup moving out of the data area of the optical disk and converting it into a force for rotating the lock lever to release the coupling between the hook and the lock protrusion; an eject lever contacting a stopper formed on the chassis to relatively move the chassis and the tray; a lock spring for providing an elastic force for rotating the lock lever in a direction in which the hook engages with the lock protrusion; and an ejection spring for providing an elastic force for rotating the ejection lever in a direction for pushing the stopper. Accordingly, the tray can be unlocked without a solenoid, and the tray can be pushed out of the body of the optical disk device without using a separate ejecting device.

Description

Optical disc device

The present invention relates to an optical disk apparatus, and more particularly, to an optical disk apparatus capable of opening a tray by driving force of a step motor without a solenoid.

An optical disk device is a device that records data on or reads data from and reproduces data on an optical disk having a standard such as a CD, DVD, or BD.

The optical disk device includes a type in which a tray is slidably coupled to a body and a turntable and a pickup are installed inside the body, and a type in which the tray is slidably coupled to the body and a turntable and pickup are installed in the tray, the former being for a desktop computer. The latter is a tray-type optical disk drive and is used for notebook computers.

The tray-type optical disk device includes a locking means for maintaining a state in which the tray is inserted into the body and a locking means for releasing the lock so that the tray can be withdrawn from the body, wherein the locking means includes a spring and a lock formed on the body. It consists of a hook-shaped locking part coupled to the protrusion, and the unlocking means releases the engagement with the locking protrusion by rotating the locking part using a solenoid.

However, there is a cost burden to use a solenoid to release the locking part for withdrawing the tray, and there is a space limitation because a space for the installation of the solenoid must be prepared.

On the other hand, a tray-type optical disk device used for a notebook computer includes a structure inside the tray that pushes the tray so that the tray can be pulled out from the device, and this structure is configured separately from the tray locking means and the locking releasing means. has been

1 illustrates a structure in which the tray is pushed out of the chassis by using a spring and a shaft to take out the tray in a tray-type optical disk device.

Two holders are formed at the rear of the tray, and the eject shaft is supported so that it can slide through the hole formed in the holder, and a spring for applying an elastic force in the tray ejection direction is inserted between the two holders in the eject shaft.

When the tray is drawn into the body of the optical disk unit, when the protruding end of the eject shaft comes into contact with the inner wall of the rear of the main chassis and the other end of the eject shaft is pressed into the tray, a protrusion formed in the middle of the eject shaft is formed on the tray One side of the holder is fixed to compress the spring. In this state, the tray is fixed to the body (or main chassis) of the optical disk device by a predetermined locking device (not shown) as shown in FIG. 1A .

When the tray is ejected, as the lock by the lock is released, the spring compressed by the holder and the protrusion of the eject shaft is restored to its original shape, thereby pushing the eject shaft out of the tray. Accordingly, as shown in FIG. 1B , the eject shaft receives the elastic force of the spring and pushes the inner wall of the main chassis to be separated from the main chassis, and the tray is drawn out of the body of the optical disk device by reaction.

The object of the present invention is, in view of this situation. An object is to provide an optical disk device for unlocking a tray without a solenoid.

Another object of the present invention is to provide an optical disk device in which a tray locking and unlocking means and a structure for pushing the tray are integrated.

According to an embodiment of the present invention, there is provided an optical disk device comprising: a chassis forming a body of the optical disk device and having a locking protrusion and a stopper; a tray containing an optical disk, capable of being drawn out/retracted from the body in a sliding manner, and comprising an optical pickup configured to move in a radial direction of the optical disk to write data to or read data from the optical disk; and a lock module mounted on the rear surface of the tray to unlock the chassis and the tray, wherein the lock module includes: a lock lever that includes a hook for coupling with the lock protrusion and is rotatably installed; a first link lever and a second link lever for receiving a straight force from the optical pickup moving out of the data area of the optical disk and converting it into a force for rotating the lock lever to release the coupling between the hook and the lock protrusion; an eject lever contacting the stopper so that the chassis and the tray are relatively moved; a lock spring for providing an elastic force for rotating the lock lever in a direction in which the hook engages with the lock protrusion; and an ejection spring for providing an elastic force for rotating the ejection lever in a direction for pushing the stopper.

In an embodiment, the first link lever may interfere with the optical pickup and rotate clockwise to release the coupling with the second link lever.

In an embodiment, the lock spring has one end fixed to the first link lever, so that when the first link lever does not interfere with the optical pickup, the first link lever rotates counterclockwise. can provide

In an embodiment, the first link lever maintains an engagement state with the first link lever contact portion for interfering with the optical pickup and the second link lever when the first link lever contact portion does not interfere with the optical pickup. It may be configured to include a first link lever fastening portion for.

In one embodiment, the second link lever is rotated counterclockwise when the first link lever receives a straight force from the optical pickup and is released from the first link lever so that the hook and the locking protrusion are rotated counterclockwise. The lock lever may be rotated in a direction in which the coupling is released, and when the tray is drawn into the body, it may be rotated clockwise by the eject lever to be engaged with the first link lever.

In an embodiment, the second link lever includes a second link lever fastening part for maintaining a fastening state with the first link lever, a second link lever first contacting part for contacting the eject lever, and the lock lever; A second link for contacting may be configured to include a second contact portion.

In one embodiment, the second link lever may be configured to further include a torsion spring for providing an elastic force to rotate in the counterclockwise direction.

In an embodiment, the eject lever rotates clockwise by the eject spring to push the stopper when a straight force is transmitted from the optical pickup to release the coupling between the hook and the locking protrusion, and the tray moves the body The first link lever and the second link lever may be fastened to each other by rotating counterclockwise by the stopper when it is drawn into the .

In one embodiment, the ejection lever, the ejection lever first contact portion for contacting the stopper, and the second link lever when rotated counterclockwise by the stopper in contact with the second link lever clockwise It may be configured to include an eject lever second contact portion for rotating.

In one embodiment, the lock lever is in contact with the second link lever rotating in a counterclockwise direction when a straight force is transmitted from the optical pickup to release the coupling state between the first link lever and the second link lever. It may be configured to further include a lock lever contact portion for.

Accordingly, the tray can be unlocked without a solenoid, and the tray can be pushed out of the body of the optical disk device without using a separate ejecting device.

In addition, it is possible to reduce manufacturing cost and increase productivity by simplifying the configuration of the optical disk device.

1 shows a structure in which the tray is pushed out of the chassis by using a spring and a shaft to take out the tray in a tray-type optical disk device;
2 is a perspective view illustrating a slim type optical disk device in which a turntable and a tray on which a pickup is installed are slid into a body;
3 is a view showing a rear surface of the optical disk device of FIG. 2;
4 is a perspective view showing a first link lever constituting a locking module;
5 is a perspective view showing a second link lever constituting the locking module;
6 is a perspective view showing an eject lever constituting the lock module;
7 shows the states of elements constituting the locking module when the tray is in the locked state.

The above-described objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. However, since the present invention may have various changes and may have various embodiments, specific embodiments will be exemplified in the drawings and described in detail below. Throughout the specification, like reference numbers refer to like elements in principle. In addition, if it is determined that a detailed description of a known function or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, numbers (eg, first, second, etc.) used in the description process of the present specification are only identification symbols for distinguishing one component from other components.

Hereinafter, an optical disk device according to the present invention will be described in more detail with reference to the drawings. The suffixes "module" and "part" for the components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves.

FIG. 2 is a perspective view of a slim type optical disk device in which a turntable and a tray on which a pickup is installed are slid into a body, and FIG. 3 is a rear view of the optical disk device of FIG. 2 .

The optical disk device 1 constitutes a body through the main chassis 10 and the cover 30 , and the tray 50 on which the optical disk is seated is installed to slide on the main chassis 10 . It can be inserted into the space formed between the and the cover 30 and withdrawn out of the body.

The tray 50 includes a spindle motor 60 for rotating the optical disk to be seated, an optical pickup 70 for writing data to or reading data from the optical disk by shining a laser beam on the optical disk, and an optical pickup ( a lead screw 81 for transferring the 70) in the radial direction of the optical disk, a step motor 80 for rotating the lead screw 81, and a main shaft 82 for guiding the transfer of the optical pickup 70; The pickup transfer unit including the sub shaft 83 and the guide feeder 71 engaged with the lead screw 81 to transmit the rotational force of the lead screw 81 to the optical pickup 70 as a straight force may be included. Reference numeral 71 can be considered as a component belonging to the optical pickup 70 .

On the rear surface of the tray 50, the tray 50 is inserted into the body of the optical disk device 1 to lock the main chassis 10 or to unlock the tray 50 to withdraw the tray 50 from the body. The lock module 100 is installed, and the lock module 100 includes a lock lever 110 , a first link lever 120 , a second link lever 130 , an eject lever 140 , a lock spring 161 , and an ejector. It may be configured to include a spring (162).

A locking protrusion 11 is formed on the main chassis 10 to engage the lock lever 110 installed on the tray 50 so that the tray 50 can be maintained in the inserted state inside the optical disk device 1 . and the eject lever 140 loaded with elastic force to push the tray 50 from the main chassis 10 when the tray 50 is withdrawn from the optical disk device 1 serves as a support for applying the force. A stopper 12 is formed.

The lock lever 110 is coupled to the locking protrusion 11 to fix the tray 50 inserted into the optical disk device 1 , and centers the first rotation shaft 151 formed on the tray 50 . When the locking protrusion 11 and the locking state are released by rotating to , the tray 50 can be pulled out from the inside of the optical disk device 1 body.

The lock lever 110 may include a hook 111 for coupling with the lock protrusion 11 and a lock lever contact part 112 for receiving a rotational force from the second link lever 130 . When the lock lever contact part 112 comes into contact with the second link lever 130 and receives rotational force, the lock lever 110 rotates clockwise about the first rotation shaft 151 to lock the hook 111 and the lock lever 110 . The engagement of the projection 11 is released. In addition, one end of the lock spring 161 is fixed to the lock lever 110 , and when the lock lever contact part 112 does not come into contact with the second link lever 130 , the lock lever 110 becomes the lock spring 161 . ) receives the elastic force from the first rotation shaft 151 to rotate counterclockwise around the hook 111 and the locking protrusion 11 is coupled.

4 is a perspective view illustrating a first link lever constituting the locking module, and FIG. 5 is a perspective view illustrating a second link lever constituting the locking module.

The first link lever 120 and the second link lever 130 apply a force corresponding to a straight force moving in the outer circumferential direction from the optical pickup 70 moving out of the data area of the optical disk, so that the hook 111 locks the protrusion. (11) serves to convert the lock lever 110 into a clockwise rotation force to release the coupling.

The first link lever 120 interferes with the guide feeder 71 of the optical pickup 70 moving out of the data area of the optical disk, and the second rotation axis ( 152 is rotated in a clockwise direction, and as the first link lever 120 rotates, the fastening state of the first link lever 120 and the second link lever 130 is released to release the second link lever 130 . ) rotates counterclockwise around the third rotation shaft 153 .

The first link lever 120 has a first link lever contact portion 121 extending from the second rotation shaft 152 toward the lead screw 81 so as to come into contact with the guide feeder 71 moving in the outer circumferential direction outside the data area. ), and the second link lever 130 in a state in which the tray 50 is inserted into the body of the optical disk device 1 (the guide feeder 71 and the first link lever contact portion 121 do not interfere). ) and a first link lever fastening part 122 having a fastening shape through two protrusions to maintain a fastened state, and the first link lever fastening part 122 is the first link lever contacting part 121 and It extends from the second rotation shaft 152 in the other direction.

The other end of the lock spring 161 is fixed to the first link lever 120 . In a state where the first link lever contact part 121 does not contact the guide feeder 71 , the elastic force of the lock spring 161 is the first The link lever 120 acts as a rotational force that rotates counterclockwise about the second rotation shaft 152 so that the first link lever fastening part 122 can maintain the fastening state with the second link lever 130 . do.

The second link lever 130 is provided with, for example, a torsion spring (not shown) to receive an elastic force that rotates counterclockwise around the third rotation shaft 153 all the time, and moves in the outer circumferential direction outside the data area. When the guide feeder 71 applies a force to the first link lever contact part 121 to release the fastening state with the first link lever fastening part 122, the third rotation shaft 153 by the torsion spring as the center. It rotates counterclockwise, and when the tray 50 is drawn into the body of the optical disk device 1, the eject lever 140 comes into contact with the stopper 12 and rotates, and the rotational force of the eject lever 140 is transmitted to release it. 3 It can rotate clockwise around the rotation shaft 153 .

The second link lever 130 includes a second link lever fastening part 131 for maintaining a fastening state with the first link lever fastening part 122 while the tray 50 is inserted into the body of the optical disk device 1 . ), a second link lever for applying a rotational force to the eject lever 140 while rotating counterclockwise when the fastening state of the second link lever fastening part 131 and the first link lever fastening part 122 is released. When the first contact part 132 and the second link lever fastening part 131 and the fastening state of the first link lever fastening part 122 are released, they rotate in a counterclockwise direction and come into contact with the lock lever contact part 112 ( It may be configured to include a second link lever second contact portion 133 for applying a rotational force to the 110).

When the user of the optical disk device 1 pushes the tray 50 into the body of the optical disk device 1, the stopper 12 formed on the main chassis 10 moves (the tray 50 moves into the body). This means that the main chassis 10 moves relatively (in the opposite direction) with respect to the tray 50. By pushing the eject lever 140, the eject lever 140 is rotated in half about the fourth rotation shaft 154 The second link lever 130 rotates clockwise and the rotating eject lever 140 comes into contact with the second link lever first contact portion 132 and opposes the force of the torsion spring acting on the second link lever 130 . is rotated clockwise around the third rotation shaft 153 , and the second link lever fastening part 131 and the first link lever fastening part 122 are in a fastening state in which they are coupled to each other.

5 is a perspective view illustrating an eject lever constituting a lock module.

The eject lever 140 comes into contact with the stopper 12 formed on the main chassis 10 and applies a force to each other to cause the main chassis 10 and the tray 50 to move relatively. When the locking protrusion 11 and the lock lever 110 and the hook 111 are unlocked in a state in which is inserted into the body, the eject lever 140 pushes the stopper 12 and the tray 50 protrudes from the body. When the user pushes the tray 50 into the body, the stopper 12 pushes the eject lever 140 to rotate the eject lever 140, and according to the rotation of the eject lever 140, the second link lever ( 130 rotates to release contact with the lock lever 110 , and accordingly, the lock lever 110 rotates to engage the hook 111 and the lock protrusion 11 , so that the tray 50 is the body of the optical disk device 1 . (or the main chassis 10).

The eject lever 140 has a shape extending from the fourth rotation shaft 154 , and a first contact portion 141 of the eject lever and a first contact portion of the second link lever for contacting the stopper 12 of the main chassis 10 . It may be configured to include an eject lever second contact portion 142 for contacting with the 132 . In addition, one end of the ejection spring 162 is fixed to the eject lever 140 and the other end is fixed to the tray 50 .

6 shows the states of the elements constituting the locking module when the tray is in the locked state.

As shown in FIG. 3 , when the user pushes the tray 50 into the body while the tray 50 comes out of the body of the optical disk device 1 , the stopper 12 comes into contact with the ejection lever first contact part 141 and pushes it. As the ejection lever 140 rotates counterclockwise around the fourth rotational shaft 154, the ejection spring 162 increases and an elastic force is loaded, and the ejection lever second contact portion 142 is connected to the second link lever. The second link lever 130 is engaged with the first contact part 132 to rotate clockwise about the third rotation shaft 143 , and accordingly, the second link lever second contact part 133 is connected to the lock lever contact part 112 . ), the lock lever 110 rotates counterclockwise around the first rotation shaft 151 by the elastic force of the lock spring 161 so that the hook 111 is engaged with the lock protrusion 11 . It becomes the same lock state as 6.

In a state in which the tray 50 is inserted into the body, the guide feeder 71 moving in the outer circumferential direction outside the data area applies a force to the first link lever contact part 121 to form the first link lever fastening part 122 and the second link lever fastening part 122 . When the fastening state of the link lever fastening part 131 is released, the second link lever 130 rotates counterclockwise about the third rotation shaft 153 by the torsion spring to rotate the first link lever second contact part ( 133) is engaged with the lock lever contact part 112, the lock lever 110 rotates clockwise to release the lock state of the hook 111 and the lock protrusion 11, and the second link lever 130 rotates counterclockwise. When the second link lever first contact part 132 pushes the eject lever second contact part 142 according to the direction rotation, the eject lever 140 is moved around the fourth rotation shaft 154 by the elastic force of the eject spring 162 . As shown in FIG. 3 , the eject lever first contact part 141 pushes the stopper 12 of the main chassis 10 while rotating clockwise and the front part of the tray 50 protrudes from the body of the optical disk device 1 . becomes

Accordingly, the tray can be unlocked without a solenoid, and the tray can be pushed out of the body of the optical disk device without using a separate ejecting device.

The present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such modifications or variations are included in the claims of the present invention.

1: optical disk unit 10: main chassis
11: lock projection 12: stopper
30: cover 50: tray
60: spindle motor 70: optical pickup
71: guide feeder 80: stepper motor
81: lead screw 82: main shaft
83: sub shaft 100: lock module
110: lock lever 111: hook
112: lock lever contact portion 120: first link lever
121: first link lever contact portion 122: first link lever fastening portion
130: second link lever 131: second link lever fastening part
132: second link lever first contact portion 133: second link lever second contact portion
140: eject lever 141: eject lever first contact portion
142: eject lever second contact portion 151 to 154: first to fourth rotation shaft
161: lock spring 162: eject spring

Claims (10)

a chassis forming a body of the optical disk device and having a locking protrusion and a stopper;
a tray containing an optical disk, capable of being drawn out/retracted from the body in a sliding manner, and comprising an optical pickup configured to move in a radial direction of the optical disk to write data to or read data from the optical disk; and
and a locking module mounted on the rear surface of the tray to unlock the chassis and the tray,
The lock module is
a lock lever including a hook for engaging with the locking protrusion and rotatably installed;
a first link lever and a second link lever for receiving a straight force from the optical pickup moving out of the data area of the optical disk and converting it into a force for rotating the lock lever to release the coupling between the hook and the lock protrusion;
an eject lever contacting the stopper so that the chassis and the tray are relatively moved;
a lock spring for providing an elastic force for rotating the lock lever in a direction in which the hook engages with the lock protrusion; and
and an ejection spring for providing an elastic force for rotating the ejection lever in a direction for pushing the stopper;
The first link lever interferes with the optical pickup and rotates clockwise to release the coupling with the second link lever,
The second link lever rotates counterclockwise when the coupling with the first link lever is released to rotate the lock lever in a direction in which the coupling between the hook and the lock protrusion is released, and the tray is drawn into the body when the optical disk device is rotated clockwise by the eject lever to be engaged with the first link lever. delete According to claim 1,
The lock spring has one end fixed to the first link lever, and provides an elastic force to rotate the first link lever counterclockwise when the first link lever does not interfere with the optical pickup. An optical disc device with According to claim 1,
The first link lever includes a first link lever contact portion for interfering with the optical pickup and a first link for maintaining engagement with the second link lever when the first link lever contact portion does not interfere with the optical pickup. An optical disk device comprising a lever fastening part. delete According to claim 1,
The second link lever includes a second link lever fastening part for maintaining a fastening state with the first link lever, a second link lever first contacting part for contacting the eject lever, and a second contacting part for contacting the lock lever. and a link second contact portion. 7. The method of claim 6,
and the second link lever further includes a torsion spring for providing an elastic force to rotate in a counterclockwise direction. According to claim 1,
The ejection lever rotates clockwise by the ejection spring to push the stopper when a straight force is transmitted from the optical pickup to release the coupling between the hook and the locking protrusion, and when the tray is drawn into the body, and rotating counterclockwise by a stopper so that the first link lever and the second link lever are fastened. 9. The method of claim 8,
The ejection lever includes an ejection lever first contact portion for contacting the stopper and an ejection lever for rotating the second link lever clockwise by contacting the second link lever when rotated counterclockwise by the stopper. and a second contact portion. According to claim 1,
The lock lever may include a lock lever contact portion for contacting a second link lever rotating in a counterclockwise direction when a straight force is transmitted from the optical pickup to release the coupling state between the first link lever and the second link lever. An optical disk device, characterized in that it further comprises.

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