JPH04351744A - Loading device for optical disk - Google Patents

Abstract

PURPOSE:To perform the forward/backward operation of a tray and loading of an optical disk to a spindle motor by driving of one driving source. CONSTITUTION:When a motor 18 of a moving mechanism 4 is rotated to move a carriage 3 from the front position to the read position after an optical disk 8 is set, it is moved backward along horizontal parts 12b, 13b, and 14b of guide grooves 12, 13, and 14; and when it reaches the rearmost position, pins 9, 10, and 11 are brought into contact with wall faces of vertical parts 12c, 13c, and 14c. Then, a component of downward force is applied from an upper slope 17a of an oblique groove 17 of the carriage 3, and the pin 9 is moved downward along the vertical part 12c. A tray 1 is moved downward also, and the optical disk 8 placed on a placing part 5 of the tray 1 is loaded onto a spindle motor 6 by a disk placing part 7. The opposite operation is performed at the time of ejection; and when the carriage 3 is moved forward, the optical disk 8 is unloaded from the disk placing part 7, and the tray 1 projects from a front prate 15 so that the optical disk 8 can be taken out.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to the loading of optical discs provided in optical disc drives that load and read or write information on optical information recording discs (hereinafter simply referred to as optical discs), such as CDs. It is related to the device.

0002

2. Description of the Related Art In optical disk drives, a loading method called so-called front loading is generally used. In this method, when loading, the tray on which the optical disc is placed protrudes from the front plate, the optical disc is placed on the tray mounting part of the tray, which is usually formed in a concave shape, and the operation button on the front plate is operated. The tray is automatically retracted.

[0003] When the tray is drawn into the apparatus, it is chucked onto the disk mounting portion of the spindle motor by a separately provided chucking mechanism, and the rotation of the spindle motor is transmitted to perform reading or writing.

0004

[Problems to be Solved by the Invention] In this type of loading device, the mechanism for pulling in the tray (this is the same as the mechanism for ejecting the tray) and the mechanism for loading and chucking the optical disk onto the spindle motor are completely different. Therefore, the drive means for driving each, in other words, the drive motor for the tray and the drive motor for the loading mechanism to the spindle motor were also configured as separate devices. Therefore, there were problems in that the drive mechanism became complicated and the cost increased.

[0005] The present invention was made in view of the actual state of the prior art, and its purpose is to provide a simple and easy-to-use system that can drive a tray and load an optical disk onto a spindle motor using a single drive source. An object of the present invention is to provide a low-cost optical disc loading device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, an optical disk loading device according to the present invention basically comprises a tray, a side plate, a carriage, and a moving means. More specifically, the tray is provided with a mounting portion for mounting the optical disc, an insertion hole for inserting the spindle motor, and a pin projecting horizontally from the side surface. The pin is inserted into the side plate, a guide groove having a horizontal portion and a vertical portion is formed, and the side plate is integrally attached to the main body of the device. The pin inserted through the guide groove is loosely inserted into the carriage, and when the carriage is at the most retracted position, the pin is positioned at the bottom of the guide groove, and when the carriage moves forward from the most retracted position, the pin is moved to the vertical position. A diagonal groove is formed for moving the pin toward the front plate along the horizontal portion when the pin is raised along the horizontal portion. Further, a moving means for moving the carriage along the front-rear direction of the apparatus main body obtains driving force from a single drive motor.

[0007]

[Operation] According to the above configuration, after placing the optical disc,
When the motor of the moving means is rotated to move the carriage from the front position to the rear position, it reaches the rear along the horizontal part of the guide groove, and when it reaches the rearmost position, the pin is located in the vertical part, contact the wall. Then, a downward force is applied from the upper wall of the diagonal groove of the carriage, and the pin moves downward along the vertical portion. This results in
The tray also moves downward, and the optical disc placed on the tray placement portion is loaded onto the spindle motor.

[0008] Furthermore, at the time of ejecting, the opposite operation is performed, and when the carriage is moved forward, the optical disc is removed from the spindle motor, and the tray is further protruded from the front plate, allowing the optical disc to be taken out.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic configuration diagram mainly showing a loading device of an optical disk drive according to this embodiment, viewed from the side, and FIG. 2 is a plan view thereof. In these figures, this loading device basically consists of a tray 1, a side plate 2, a carriage 3, and a moving mechanism 4.

[0010] The tray 1 has a tray-side loading portion 5 on which the optical disk D is placed, which is formed into a circular shape slightly larger than the outer shape of the optical disk D, and a spindle is installed in the center of the tray-side loading portion 5 along the advancing/retracting direction of the tray 1. Disk mounting section 7 of motor 6
A spindle insertion hole 8 is formed through which the spindle is inserted. This allows the tray 1 to move forward and backward across the disk mounting portion 7 of the spindle motor 6.

Three pins 9, 10, and 11 are provided on both sides of the tray 1, respectively, to protrude in the horizontal direction. Since it is necessary to position the tray 1 relative to the side plate 2, the positions of these three pins 9, 10, and 11 are determined in the advancing/retreating direction (horizontal direction) of the tray 1 and the direction in which gravity is applied ( (vertical direction) so that they do not overlap.

A pair of side plates 2 are provided upright from the main body 16 of the optical disk drive device, and are provided in pairs on both sides of the tray 1, each having three guide grooves 12, 13, and 14 formed therein. Each guide groove 12, 13, 14 has the same shape and is provided at a position corresponding to the aforementioned pins 9, 10, 11, and is formed perpendicularly to the frontmost side corresponding to the front plate 15 provided on the front surface of the optical disk drive device. pin insertion parts 13a, 14a,
15a, and a horizontal portion 13b that is horizontal to the moving direction of the tray 1.
14b, 15b, and vertical parts 13c, 14c, 15c provided at the rearmost part and guiding the tray 1 downward, and each pin 9, 10, 11 is connected to these guide grooves 13, 14, 15.
is inserted into the

The carriage 3 is formed with an oblique groove 17 into which the pin 9 inserted through the guide groove 12 is loosely inserted. This oblique groove 17 is formed in such a manner that the front plate 15 side is downwardly inclined, and is set to overlap with the horizontal portion 12b and vertical portion 12c of the guide groove 12 when viewed from the side.

The moving means 4 includes a motor 18;
a worm gear 19 that is rotatably mounted on the rotating shaft of the worm gear 19; a worm wheel 21 that meshes with the worm gear 19 and is formed integrally with the driving pulley 20; a driven pulley 22 that pairs with the driving pulley 20; and a driving pulley 20. The carriage 3 is tied to the wire rope 23 and the rotation of the motor 18 is converted into movement of the carriage 3.

A spring 24 is inserted between the wire ropes 23, and the tension of the wire ropes 23 is set to be constant. Further, a guide shaft 25 is provided parallel to the side plate 2, and the carriage 3 moves reciprocally along this guide shaft 25.

FIGS. 1 and 2 show the loading position of the optical disc D, or the standby position of the tray 1 when the optical disc D is not loaded. In this position,
The pins 9, 10, 11 are located at the bottom of the vertical portions 12c, 13c, 14c of the guide grooves 12, 13, 14, and the pin 9 inserted into the diagonal groove 17 of the carriage 3 is located at the upper slope of the diagonal groove 17. 17a and is given a downward force, and is held at the lowest part of the vertical portion 12c by this force.

In this state, when a command to advance the tray 1 is input from the optical disk drive side, the motor 18 rotates, drives the wire rope 24, and moves the carriage 3 forward.

Due to this movement, the lower slope 17b of the diagonal groove 17 comes into contact with a part of the lower side of the pin 9, and a vertically upper component force generated by the angle of the slope 17b is applied to the pin 9. Become. As a result, the pin 9 moves up the vertical portion 12c as the carriage 3 moves, and reaches the horizontal portion 12b.

When reaching the horizontal portion 12b, the upward movement of the pin 9 is restricted by contacting the upper surface of the horizontal portion 12b, and the horizontal component force from the slope 17b is applied to the pin 9. join.

By this component force, the pin 9 is guided to the horizontal portion 12b and moves until it comes into contact with the vertical surface of the pin insertion portion 12a, and the motor 18 is stopped at this position. This position is the position where the tray 1 has advanced as much as possible from the door 26 of the front plate 15, and the user places the optical disc on the placing portion 5 of the tray 1 in this state. Note that while the tray 1 is advancing, the pins 10 and 11 move within the other guide grooves 13 and 14 following the movement of the pin 9.

The optical disc D is placed in tray 1 as described above.
When the loading button (not shown) is operated, the motor 18 rotates in the opposite direction to the advancing direction, and the tray 1
The horizontal portions 12b, 13b, 14 of the guide grooves 12, 13, 14 are
Retreat along b.

When the pin 9 comes into contact with the rear surface of the vertical portion 12c, the movement in the horizontal direction is restricted, and a force directed vertically downward is obtained from the slope 17a, causing the vertical portion 12c to move vertically downward.
When it moves downward and reaches the bottom of the vertical portion 12c, its movement is restricted, and at the same time, the motor 18 is stopped and held at this position.

In the process of this movement, the optical disc D is loaded onto the disc mounting portion 7 of the spindle motor 6, and the tray 1 is placed in a position where it does not interfere with the rotation of the optical disc D, that is, the pin 9 is at the bottom of the vertical portion 12c. Move to the contact position and wait.

As described above, according to this embodiment, the advancing and retracting operations of the tray 1 and the loading operation of the optical disk 7 onto the disk mounting section of the spindle motor 6 can be performed by the driving force of one motor 18. can.

[0025] Furthermore, this mechanism has guide grooves 12, 13,
14 and the diagonal groove 17 provided on the carriage 3 are used as cam grooves, so to speak, and the pin 9 as a cam follower is made to perform a predetermined operation.It constitutes a very simple mechanism and is cost-effective. It is inexpensive.

[0026]

According to the present invention constructed as described above, the carriage is moved horizontally, and the pins passing through the guide groove and the diagonal groove are moved to move the tray forward and backward and vertically. Since the movement is converted into a descending/ascending motion, it is possible to provide a simple and low-cost optical disk loading device that can be driven by a single drive source.

[Brief explanation of drawings]

FIG. 1 is a side view showing a schematic configuration of an optical disc loading device according to an embodiment.

FIG. 2 is a plan view of FIG. 1.

[Explanation of symbols]

1 Tray 2 Side plate 3 Carriage 4. Moving mechanism 5 Placement section 6 Spindle motor 7 Disc mounting section 9, 10, 11 pin 12, 13, 14 Guide groove 12b, 13b, 14b horizontal part 12c, 13c, 14c Vertical part 17 Diagonal groove 17a Upper slope 17b Lower slope 18 Motor 23 Wire rope 25 Guide shaft D Optical disc

Claims (1)

[Claims] 1. An optical disc loading device for loading an optical information recording disc onto a spindle motor to enable reading or writing of optical information to an optical disc drive device, comprising: a mounting unit for mounting an optical disc;
A tray having an insertion hole through which a spindle motor is inserted and a pin protruding horizontally from a side surface, and a guide groove having a horizontal part and a vertical part and into which the pin is inserted,
The side plate that is integrally attached to the main body of the device and the pin inserted through the guide groove are loosely inserted, and when located at the most retracted position, it will be located at the lowest part of the guide groove, and it will move forward from the most retracted position. Then, the pin is raised along the vertical part, and when it reaches the horizontal part, a carriage is formed with a diagonal groove that moves the pin towards the front plate along the horizontal part, and this carriage is moved in the front and back direction of the main body of the device. and a moving means including a single drive motor for moving an optical disk along.