JPH0675326B2 - Loading mechanism of optical disk device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device, and more particularly to a loading mechanism for an optical disk device that automatically loads or automatically sweeps a disk cartridge to a predetermined position in the device.

[Conventional technology]

Usually, in an optical disc device that handles a disc cartridge that stores a storage medium inside, the disc cartridge inserted into the device is held by a carrier, and the medium from the disc cartridge is set on the turntable of the spindle motor from that position. It is driven by the motor while drawing a predetermined locus by the long holes and links provided in the side frame to the loaded position. This locus is determined by the positioning method of the disk cartridge and the positioning method of the medium in the spindle motor, but normally it moves horizontally for a while after the start of loading, and the center of the medium in the disk cartridge and the center of the spindle motor turntable coincide. The descent begins around the corner and then descends vertically.

[Problems to be Solved by the Invention]

In the conventional optical disk device equipped with this kind of load mechanism, it is several types of links that directly engage and move the carrier holding the disk cartridge, but the places where these links are joined and the motor are decelerated. A rattling is parasitically generated at the meshing portion of the gear. The rattling of the entire drive system, which is a stack of these rattling, is not small, and even if the movement of the carrier is restrained by locking the rotation of the motor, which is the driving source, for example, the carrier moves considerably. Therefore, since the vertical movement of the carrier cannot be restrained by the link due to the play, there is nothing to support the weight of the carrier and the cartridge, the carrier instantly descends, and the medium impacts the turntable of the spindle motor. Be set automatically.

For this reason, a considerably large amount of carrier drop noise and the collision noise of the medium and the spindle motor are generated, which adversely affects the surrounding environment, and the medium and the spindle motor collide with each other, so that both the medium and the spindle motor are likely to be damaged. It was

Therefore, an object of the present invention is to provide a load mechanism that improves the load mechanism in the conventional optical disk device and can set the medium softly on the turntable of the spindle motor.

[Means for Solving the Problems]

In order to achieve the above object, the present invention defines a carrier that holds a disk cartridge and moves it to a predetermined position in a device capable of storing and reproducing data, several kinds of links that drive this carrier, and a movement trajectory of the carrier. An optical disc device having a guide frame and a side frame for holding the carrier, wherein the oblique side portion has a slanted side portion that is lowered toward the front, and the slanted side portion engages with the carrier to move the carrier forward and backward. And a spring for urging the support plate in the forward direction.

[Action]

In the loading mechanism of the optical disk device of the present invention, when the disk cartridge is loaded, the carrier held in the side frame is driven by several kinds of links, guided by the guide holes provided in the side frame, and first moved in the backward direction. Then, it starts moving downward. At this time, the hypotenuse part of the support plate having the hypotenuse part that is inclined forward and biased in the forward direction by the spring engages with the carrier, and the support plate moves backward by the force of the spring. Then, the carrier is moved to a predetermined position in the apparatus while being supported by the supporting plate.

〔Example〕

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded perspective view of an optical disk device according to an embodiment of the present invention. On the base plate 1, a side frame 3 in which side plates standing upright on the left and right of the carrier 2 are integrally connected is attached. The side frame 3 has a guide hole 3a for guiding the roller 4 fitted in the shaft 6 of the carrier 2. Guide hole
The carrier 3a has a shape that moves horizontally for a while after the carrier 2 starts loading, and vertically descends just before the loading is completed. The carrier 2 has a box shape so as to hold a disk cartridge, and shafts 6 are attached to the lower four places, and two kinds of rollers 4 and 5 are fitted to the shaft 6. The roller 4 is fitted in the guide hole 3a of the side frame 3, and the roller 5 is fitted in the elongated holes 7a, 8a of the links 7, 8 so that the carrier 2 can move smoothly. FIG. 1 shows that the carrier 2 is in the advanced state, and the operator inserts the disk cartridge into the carrier 2.
Pressing down to the position held by will start loading.
The driving source is the motor 9, and the rotation of the motor 9 is first reduced by the gear head, and then the driving force is transmitted to the drive shaft 10 via the worm wheel. A drive link 7 is attached to both ends of the drive shaft 10, and the drive link 7 is connected to a driven link 8 via a transmission link 11. The carrier 2 moves as defined by the guide hole 3a of the side frame 3 by the rotational force of the drive link 7 and the driven link 8. At the end of the downward movement of the carrier 2, the medium in the disc cartridge is set on the turntable (not shown) and the recording / reproducing process becomes possible. On the other hand, support plates 12 are sandwiched between the carrier 2 and the side frame 3 on the left and right sides. The indicator plate 12 is provided with an elongated hole 12a having a hypotenuse 12b, and the roller 4 fitted on the shaft 6 of the carrier 2 is guided to the guide hole 3a of the side frame 3 through the elongated hole 12a. The support plate 12 has a long hole for movement so that the support plate 12 can move only in the front-back direction.
12c is opened. Behind the support plate 12, studs 13
Is attached. Correspondingly, a stud 14 is also provided on the front base plate 1 and a spring 15 is applied to both of them, so that the support plate 12 is always biased in the forward direction. The operation of the load mechanism of the optical disk device configured as described above will be described below with reference to FIGS. 1 and 2.

FIG. 2 is a schematic side view of the optical disk device shown in FIG. 1, and links and the like are omitted. In this figure, the carrier 2 is in the forward position and is in a state of waiting for the insertion of the disk cartridge. When the disc cartridge is inserted, the carrier 2 moves along the guide hole 3a. Support plate 12 is spring 15
Since the carrier 2 is biased forward by the carrier 2, the carrier 2 is stationary without moving when moving horizontally. When the carrier 2 continues horizontal movement and enters the descending movement region, the support plate 12
The roller 4 of the carrier 2 hits the hypotenuse portion 12b. In order for the carrier 2 to continue the descending motion, the support plate 12 must be moved rearward, but the support plate 12 has a spring that does not move even if the weight of the cartridge and the carrier 2 is added to the hypotenuse 12b. Since the force is applied in the forward direction, the carrier 2 and the cartridge do not fall freely due to their own weight even if there is a play in the link system, that is, the medium is shockedly set on the turntable of the spindle motor. There is no. Since the carrier is lowered by the downward force due to the rotational force of the link, extremely soft loading can be realized.

〔The invention's effect〕

As described above, in the load mechanism of the optical disk device of the present invention, the supporting plate that has the oblique side portion that is lowered toward the front and that moves forward and backward by engaging the carrier at the oblique side portion when moving up and down is provided. Since it was decided to urge it forward with a spring, even if there is some play in the drive system, it will be lowered vertically.
The carrier does not fall freely, and there is an effect that it is possible to surely prevent the problem in the conventional load mechanism, that is, the damage accident of the medium and the spindle due to the medium being shocked and set on the turntable. .

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, and FIG. 2 is a schematic side view of the optical disk device shown in FIG. In the figure, 1 ... base plate, 9 ... motor 2 ... carrier, 10 ... drive shaft 3 ... side frame, 11 ... transmission link 3a ... guide hole, 12 ... support plate 4,5 ... roller , 12a …… Oval hole 6 …… Shaft, 12b …… Slanting part 7 …… Drive link, 12c …… Oval hole 7a …… Oval hole, 13,14 …… Stud 8 …… Driven link, 15 …… Spring 8a ...... Slot

Claims (1)

[Claims] 1. A carrier for holding a disc cartridge and moving it to a predetermined position in an apparatus capable of storing and reproducing.
An optical disk device comprising several types of links for driving the carrier and a side frame having a guide hole for defining a movement path of the carrier, the side frame holding the carrier, and having a hypotenuse portion which is lowered toward the front. A loading mechanism for an optical disk device, comprising: a support plate that engages with the carrier at the hypotenuse portion and moves back and forth when the carrier moves up and down, and a spring that biases the support plate forward.