JPS63102067A - Disk driving device - Google Patents

Abstract

PURPOSE:To miniaturize a device by composing a lock member operation mechanism of the motor of a frame driving mechanism, a planetary gear device and a lock member driving device connected with the other output system of the planetary gear device. CONSTITUTION:The frame driving mechanism 17 consists of a reciprocal rotation switching motor 22, the planetary gear device 23 rotated and drived by the motor 22 and the frame driving gear device 24 connected with the one output system of the planetary gear device 23. The lock member operation mechanism 19 consists of the motor 22 which composes the frame driving mechanism 17, the planetary gear device 23 rotated and drived by the motor 22 and the lock member driving gear device 42 connected with the one output system of the planetary gear device 23. Thus, as the frame driving mechanism and the lock member operation mechanism share the same motor, it can be switched automatically and without changing its rotational direction by the aid of the planetary gear device. Consequently, since the number of parts can be decreased, the disk driving device can be miniaturized and the cost can be reduced.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is suitable for use in a so-called compatible player, a CD/LV dual-purpose player that is used for both CDs (compact discs) and LV (laser vision discs). The present invention relates to a disk drive device.

Summary of the Invention] The present invention provides a drive motor (spindle motor) for a large-diameter disk such as an LV and a disk table at one end, and a drive motor (spindle motor) for a small-diameter disk such as a CD at the other end.
A rotating frame 13 provided with a spindle motor) and a disk table, a frame drive mechanism for rotating the rotating frame, and a lock 21 in which the rotating frame rotated by the frame drive mechanism is locked at a predetermined position. When playing LV, the rotating frame is rotated by a frame drive mechanism, and the large-diameter disk drive motor and disk table provided at one end of the rotating frame are optically picked up. Then, the locking member is operated by the locking member operating mechanism to lock the rotating frame, and when playing a CD, the locking member operating mechanism is used to lock the rotating frame by the locking member. , rotate the rotating frame using the frame drive mechanism, position the small-diameter disk drive motor and disk table provided on the other end of the rotating frame toward the optical pickup side, and lock in the same manner as above. In a disk drive device in which a rotating frame is locked by a member, the frame drive mechanism is comprised of a motor, a planetary gear device rotationally driven by the motor, and an output system of one of the planetary gear devices ( a frame drive gear device connected to the output system of either the sun gear or the internal gear of the planetary gear device; A locking member driving gear device connected to the other output system of the planetary gear device, the motor, the planetary gear device rotationally driven by the motor, and a lock member driving gear device connected to one output system of the planetary gear device. When the rotating frame is stopped at a predetermined position, one output system of the planetary gear unit automatically switches to the other output system. The rotating frame can be locked in a predetermined position by operating the locking member using the locking member driving gear device of the operating mechanism.

[Prior Art] As shown in FIG. 8, a CD/LV dual-purpose disk drive device is provided with a large-diameter disk drive motor 1 and a disk table 2 at one end, and a small-diameter disk drive at the other end. A rotating frame 5 provided with a motor 3 and a disk table 4, a frame drive mechanism 6 for rotating the rotating frame 5, and a rotating frame 5 rotated by the frame driving mechanism 6 are locked in a predetermined position. The motor 6a of the frame drive mechanism 6 rotates the pinion 6c via the pulley 6b etc.
The rotating frame 5 is held at the fulcrum 7 by the rack 6d that is engaged with the rack 6d.
Rotate clockwise or counterclockwise around , and set so that the centers of rotation of the large-diameter disk drive motor 1 and the disk table 2 or the small-diameter disk drive motor 3 and the disk table 4 are perpendicular to each other. Then, the rotating frame 5 is locked by operating the locking member using a locking member operating mechanism (not shown). The drive motor 1 for large-diameter discs and the drive motor 3 for small-diameter discs are used separately due to the difference in the rotational speed used between CD and LV, or the difference in torque. This is because it is difficult to share the motor 3.

[4-4 Problems to be Solved by the Invention] The conventional CD/I and dual-purpose disk drive device described above has the following problems.

(1) The frame drive mechanism 0 uses the motor 6a, and the lock member operation mechanism uses a separate motor from the switching motor 6a, so the number of parts increases, and the device becomes larger and heavier. Moreover, the cost also increases.

(2) Furthermore, if the motor 6a of the frame drive mechanism 6 is to be used also as the motor of the lock member operating mechanism, a complicated switching device will be required.

The present invention has been made for the purpose of solving the above-mentioned conventional problems.

[Means for solving the problem] A large-diameter disk drive motor and a disk table are provided on one end side, and the other y5? a rotating frame having a small-diameter disk drive motor and a disk table on its side; a frame drive mechanism for rotating the rotating frame; In a disk drive device equipped with a locking member that locks and a locking member operating mechanism that operates the locking member, the frame driving mechanism and the locking member operating mechanism share a motor to reduce the number of parts and reduce the weight of the device. The frame drive mechanism includes a motor, a planetary gear device rotationally driven by the motor, and a frame drive gear device connected to one output system of the planetary gear device, and the lock member The operating mechanism was composed of the motor of the frame drive mechanism, a planetary gear set, locking member drive teeth connected to the other output system of the planetary gear set, and a wheel set.

When a planetary gear unit is rotationally driven by a motor, one output system of the planetary gear unit (the output system of either the sun gear or the internal gear of the planetary gear unit) and the frame drive gear unit connected thereto. In other words, the rotating frame is rotated by the frame drive mechanism, and the large-diameter disk drive motor or small-diameter disk drive motor provided on the rotating frame is set near the optical pickup to prevent rotation of the rotating frame. Then, the lock member is driven by the other output system of the planetary gear device and the lock member driving gear device, that is, the lock member operating mechanism connected thereto, and the rotating freno is locked by the lock member. Ru.

[Example] Next, the present invention will be explained with reference to FIGS. 1 to 7.

In Figs. 1 to 3, reference numeral 11 denotes a disk drive device of the present invention, and the disk drive device 11 is provided with a large-diameter disk drive motor 12 and a disk table 13 on one end side, and a small-diameter disk drive motor 12 and a disk table 13 on the other ☆1f'4 side. Rotating frame 16 provided with a disk drive motor 14 and a disk table 15
, a frame drive mechanism 17 that rotates the rotating frame 16, and a locking member 18 that locks the rotating frame 16 rotated by the frame drive mechanism 17 at a predetermined position.
and a lock member operating mechanism 1 that operates the lock member 18.
It has 9.

The rotating frame 16 is called a spindle housing, and is formed into a so-called arm shape by die-casting, and a vertical bearing portion 16a is formed in the center portion in the longitudinal direction. Then, by inserting the shaft 21 erected on the device board 20 into the bearing portion 16a and interposing a ball bearing (not shown) between the two, the rotating frame 16 is mounted on the device board 20. It is mounted to rotate horizontally about a shaft 21. Further, the large-diameter disk drive motor 12 and disk table 13, the small-diameter disk drive motor 14, and the disk table 15 are on the same rotation radius around the shaft 21, and the rotation center axis of each disk table 13.15. They are attached to both ends of the rotating frame 16 in a vertical, axially vertical, state.

The frame drive mechanism 17 also includes a motor 22 for switching between forward and reverse rotations, a planetary gear device 23 rotationally driven by the motor 22, and a frame drive gear device linked to one output system of the planetary gear device 23. 24 (in the case of the embodiment, the Sakae gear). As shown in FIG.
5, and a sun wheel 23 attached to the lower and upper parts of the bearing tube 23a.
b.

23c, and the sun gears 23b and 23 at the lower and negative parts.
It is rotatably fitted to the outer periphery of the bearing cylinder part 23a while being sandwiched between
ξ gear 23 (1 is rotatably installed on the upper surface of 1 by shafts 23e and 23e, and the upper sun gear 23c
It consists of three planetary gears 23f, 23f meshing with the planetary gears 23r, and an internal gear 23h having internal teeth 23g meshing with the planetary gears 23r23f, and sun gears 23b, 23.
If the spur gear 23d is prevented from rotating with c fixed (rotation inhibited 1] -), the rotation of the A1 East Army 23d will be caused by the planetary gear 23.
When the spur gear 23d is rotated with the internal gear 23h fixed, the rotation of the spur gear 23d is output to the sun 1 via the planetary gear 2:H-23f. It is designed to be output to the east cars 23b and 23c. The outer peripheral teeth 23i of the internal gear 23h of the planetary gear device 23 mesh with the frame drive gear device 24 attached to the outer periphery of the bearing portion 16a of the rotating frame 16, and the spur gear 23d has small and large reduction gears. Gear 26.
27 and a worm gear 28 to a motor 22 that can be switched between forward and reverse rotation. Therefore, the sun gear 23b,
When the motor 22 is rotated in one direction with the worm gear 23c fixed, the rotation of the motor 22 is increased by the worm gear 28.

Small reduction gears 27, 26, spur gear 23d, planetary gear 23
f23f1 is transmitted to the frame drive gear device 24 via the internal gear 23h, and drives the rotary frame 16 clockwise, and is provided at the lower end of one end side of the rotary frame 16 (the small diameter disk drive motor 14 side). The protrusion 29 forms a first recess 30a of the stopper 30 provided on the locking member 18, which will be described next.
Rotate until it fits. Furthermore, when the rotation direction of the motor 22 is switched, the rotating frame 16 is driven counterclockwise,
A protrusion 31 provided at the lower end of the other end of the drive frame 16 (large-diameter disk drive motor 12 side) is connected to the stopper 30.
The fitting element is rotated into the second recess 30b.

The locking member 18 is operated by a locking member operating mechanism 19, which will be explained next.It is composed of a rotating plate 32 and a sliding plate 33.The rotating plate 32 has a fan-shaped gear on one end. 32a, and a lock pin 32 on the j1"11 side.
b, and these fan-shaped floats 32a and lock pins 32b
A shaft 35 at the upper end of the pin 34 erected on the device board 20 is fitted into the bearing hole 32c, so that the pin 34 is rotatably mounted on the device board 20. The fan-shaped gear 32a is connected to the rotating frame 16.
Bearing t'! Rotating plate drive gear 44 fixed to 1N6a
It is designed to rotate from side to side in conjunction with the rotation of the rotating freno, 16.

Furthermore, the slide plate 33 is connected to the lock pin 32 of the rotating plate 32.
It has a lock pin fitting groove 33a into which the lock pin fitting groove 33a is fitted, and is mounted so as to be slidable in the direction of the arrow a-b while being sandwiched between the rotating plate 32 and the device board 20. The lock pin fitting groove 33a includes a pin rotation allowance groove 33b formed in an arc shape around the shaft 35, and a pin rotation allowance groove 33b formed in an arc shape around the shaft 35.
Rotation prevention groove 33 provided at both ends of l'+ 33 b
The protrusions 29.c and 33d are formed in a planar H shape and are provided on one end side and the other end side of the rotating frame 16.
31 is a first recess 30a and a second recess 30b of the stopper 30;
In this state, the lock pin 32b is positioned at both ends of the pin rotation allowance groove 33b, and when the slide plate 33 is slid in the direction of the arrow in this state, the lock pin 32b is Pin rotation prevention grooves 33c, 33
d to prevent rotation of the rotating plate 32.

33e is a long hole provided in the center of the slide plate 33, and a pin 34 provided upright on the device board 20 is inserted into the long hole 33e.
By inserting , the sliding range is defined. 33f...33f are roller receiving holes provided at the front and rear of the slide plate 33 in the sliding direction, and the large diameter portion 36a of the roller 36 is inserted into these roller receiving holes 33f...33f, and the small diameter portion 36b is slid. The bottom of the plate 33 and the device board 2
By interposing the slide plate 33 between the upper surfaces of the slide plate 33 and the top surface of the slide plate 33, the slide plate 33 is arranged to slide smoothly. Further, 33g is a ball receiving hole provided on both sides of the slide plate 33, and a metal ball 37 having a diameter slightly larger than the thickness of the slide plate 33 is fitted into the receiving hole 33g.
Slide plate 33 with upper plate 38a of guide piece 38 via
The upper surface of the slide plate 38 is held down to prevent the slide plate 33 from floating up, and the side plate 38b guides the sliding movement of the slide plate 33. 38c is a bottom plate of the guide piece 38, and the guide piece 38 is attached to the device 7: (plate 20) by a port 38d attached to the bottom plate 38c. A pair of left and right pins 39.39 are provided, and these pins 39.
39 are long holes 30c, 30c provided in the stopper 30.
By fitting the stopper 30 into the upper part of the stopper plate 33 and attaching the first stop ring 40. It is attached so as to be slidable in the a-b direction, and is pulled in the direction of the arrow by the spring force of coil springs 41 and 41.

The lock member operation mechanism 19 also includes a motor 22 constituting the frame drive mechanism 17, a planetary gear device 23 rotationally driven by the motor 22, and a planetary gear device 23 that is rotationally driven by the motor 22.
A locking member driving gear device 4 connected to one output system of
It is composed of 2.

The locking member driving gear device 42 includes a sliding plate driving gear 45 that meshes with the lower sun gear 23b via pinions 43 and 43 attached to the device board 2°, and a bearing portion 16a of the rotating frame 16. It consists of a rotary plate drive gear 44 fixedly attached to the lower end of the rotary plate drive gear 44. A bearing hole 45a is provided in the center of the slide plate driving gear 45,
By inserting the shaft 21 erected into the bearing hole 45a, the apparatus board 20 is rotated about the shaft 21, and the lower surface of the slide plate drive gear 45 is provided with a shaft 21 as shown in FIG. As shown by the broken line, a link-shaped cam groove 45b is formed offset from the bearing hole 45a, and a projection 46 provided at one end of the slide plate 33 is fitted into the cam groove 45b. . When the slide plate drive gear 45 is rotated, the slide plate 33 slides (reciprocates) in the direction of the arrow a-b by the cam groove 45b and the protrusion 46. Reference numeral 45c denotes an arc-shaped groove formed in the slide plate drive gear 45, and the groove 45c is formed in a semicircular arc shape on the side of the cam groove 45b near the shaft 21. A protrusion 47 provided on the lower surface of the frame drive gear device 24 is fitted into the arc-shaped groove 45c, and the protrusion 47 is located on one end side of the rotating frame 16 (on the small diameter disk drive motor 14 side). When the protrusion 29 provided at the lower end is fitted into the first recess 30a of the stopper 30, it comes into contact with one end 45c' of the arc-shaped groove 45c. is fixedly attached to the ground surface of the frame drive gear 24, and when the protrusion 29 is fitted into the first recess 30a of the stopper 30Q, one end 3 of the fan-shaped gear 32a of the rotary plate 32 is attached.
The lock pin 32b, which is provided on one end side of the rotating plate 32 and engaged with the lock pin 2a', is positioned at the pin rotation limit [hi groove 38c side] on the one end side of the pin rotation allowance groove 33b of the slide plate 33. There is. Then, when the rotating frame 16 is rotated 180° counterclockwise from this state, the protrusion 31 provided on the other end side of the rotating frame 16 moves into the second recess 30b of the stopper 30.
and the other end side 32a'' of the fan-shaped gear 32a is in mesh with the rotation plate drive gear 44, and the lock pin 32b is inserted into the pin rotation prevention groove on the other end side of the pin rotation allowance groove 33b. It will be in a state located on the groove 33d side.

Note that 48 is a limit switch operation plate. Elongated holes 48a and 48b for bearings are formed at one end and the other end of the limit switch operation plate 48, and the shaft 21 is inserted into one elongated hole 48a, and the shaft 25 is inserted into the other elongated hole 48b. By inserting the slide plate 33, the slide plate 33 can be slid in the direction of arrow a-b within the length range of the elongated holes 48a and 48b.
and the device board 20, and a protrusion 49 is provided upright on one end side of the elongated hole 48a. The protrusion 49 is fitted into a cam groove 45b provided on the lower surface of the slide plate driving gear 45 with a phase of approximately 180 degrees with respect to the protrusion 46 provided on the slide plate 33, and is in the same direction as the sliding direction of the slide plate 33. By sliding the slide plate 33 in the direction b, the rotating frame 1
6 is locked, slide the limit switch operation plate 48 in the direction of the arrow to press the switch pressing part 48c at the tip.
By pressing the limit switch 50, the electric gap between the motor 22 is cut off and the polarity of the motor 22 is switched. Note that 51 is an optical pickup, and 52 is an optical pickup operating mechanism for driving the optical pickup 51.

Since the disk drive device I+ of the embodiment has the above-described configuration, the lock pin 32b provided at one end of the rotating plate 32 prevents the rotation of one pin of the sliding plate 33, as shown in FIG. The disk table 15 on the small diameter disk drive motor 14 side, which is fitted into the groove 32 and attached to one end of the rotating frame 16, is set on the optical pickup 51 side and the rotating frame 16 is locked. Below, when the motor 22 is driven to rotate in one direction, the internal gear 23h of one output system of the planetary gear device 23 is locked, that is, rotation is prevented by the rotary plate 32. Therefore, the rotation of the motor 22 is transmitted to the sun gears 23c and 23b, which are the other output system of the planetary gear device 23, and rotate the slide plate drive gear 45.Slide plate drive gear 45
When the slide plate 33 rotates, the slide plate 33 slides in the direction of arrow a by the cam groove 45b provided on the lower surface and the projection 46 fitted in the cam groove 45b, and the lock pin 32b is pulled out of the pin rotation prevention groove 30c. (At this time, the limit switch plate 48 also slides in the direction of arrow a, releasing the pressure on the limit switch 50.) When the lock pin 32b is pulled out of the pin rotation prevention groove 30c, the internal gear 23h is unlocked by the rotating plate 32, and the sliding plate drive gear 45 is prevented from rotating by the sliding plate 33. Therefore, the rotation of the motor 22 is caused by the planetary gear system 2.
The rotation frame 16 is transmitted to the internal gear 23h, which is one output system of the rotation frame 16, and rotates the rotating frame 16 counterclockwise via the frame drive gear 24 (see FIG. 5). When the rotating frame 16 rotates approximately 180 degrees counterclockwise, the rotating frame 16
The protrusion 31 provided at the lower end of one end side (the side where the large-diameter disk drive motor 12 is attached) is the second recess 30b of the stopper 30.
On the other hand, the rotating plate 32, in which the fan-shaped gear 32a is engaged with the rotating plate drive gear 44 attached to the lower end of the bearing portion 16a of the rotating frame 16, rotates clockwise around the shaft 35. , and the lock pin 32b comes into contact with the other end side (pin rotation prevention groove 33d side) of the pin rotation allowance groove 33b (see FIG. 6). Therefore, the internal gear 2 is rotated by the rotary plate 32.
3h is locked again, the rotation of the motor 22 is transmitted to the sun gears 23c and 23b, which are the other output system of the planetary gear device 23, and the slide plate drive gear 45
Rotate.

When the slide plate drive gear 45 rotates, the cam groove 4
5b and the protrusion 46 fitted in the cam groove 45b, the slide plate 33 slides in the direction of the arrow, and the lock pin 3
2b fits into the pin rotation prevention groove 33d, and the rotating frame 16 is locked with the disk table 13 on the large-diameter disk drive motor 12 side set on the optical pickup 51 side. (See Figure 7). Then, as the slide plate 33 slides in the direction indicated by the arrow, the limit switch operation plate 48 also slides in the direction indicated by the arrow, and the limit switch 50 is pressed by the switch pressing portion 48c at the tip thereof to turn off the power to the motor 22, and The polarity of the motor 22 is switched.

Further, when the motor 22 is turned on in the state shown in FIG. 7, the motor 22 rotates in the opposite direction to the previous direction.
The rotation slides through sun gears 23c and 23b, which are one output system of the planetary gear device 23.

is transmitted to the plate drive gear 45, and the slide plate drive gear 4
5 in the opposite direction from the front, the slide plate 3 is rotated by the cam groove 45b and the protrusion 46 fitted in the cam groove 45b.
3 slides in the direction of the arrow, and the lock pin 32b comes out of the pin rotation prevention groove 33d. While the lock pin 33b is removed from the pin rotation prevention groove 33d, when the slide plate 33 stops sliding in the direction of the arrow, the slide plate drive gear 45 to the sun gear 23 are moved by the slide plate 33.
Since b and 23c are locked, the motor 22
The rotation is output to the internal gear 23h of the planetary gear device 23, and the internal gear 23h rotates the rotating frame 16 by approximately 180° clockwise in the opposite direction. Then, as in the case described above, the rotating frame 16 is locked by the slide plate 33 by switching the output system of the planetary gear device 23.

[Effects of the Invention] The disk drive device of the present invention has the above-described configuration, and the frame drive mechanism is connected to a motor, a planetary gear device rotationally driven by the motor, and an output system of one of the planetary gear devices. and a frame drive gear device connected to each other, and the lock member operating mechanism is configured to include a motor of the frame drive mechanism, a planetary gear device, and a lock member drive gear device connected to the other output system of the planetary gear device. Since the frame drive mechanism and the lock member operation mechanism share a motor, switching can be done automatically by using a planetary gear system without changing the rotation direction of the motor, reducing the number of parts. Thus, it is possible to reduce the size and cost of the disk drive device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the disk drive device of the present invention, FIG. 2 is an exploded perspective view, FIG. 3 is a sectional view of the main part, and FIG. FIG. 5 is a plan view of the main part showing the state in which the lock pin 32b is removed from the pin rotation prevention groove 30c,
FIG. 6 is a plan view of the main part showing the state in which the lock pin 32b has moved to the other end side of the pin rotation allowance groove 30b, and FIG. 7 shows the lock pin 32b fitted into the pin rotation prevention groove 336. A plan view of the main parts showing the state, and FIG. 8 is a side view of the conventional example. 1 disc drive device, 12 large diameter disc drive motor, 13 disc table, 14 small diameter disc drive motor, 15 disc table, 16 rotation frame, 17 frame drive mechanism, 18 lock member, 1
9 - Lock member operation mechanism, 20... device board, 21
Shaft, 22. Motor, 23. Planetary gear device, 24. Frame drive gear device, 42. Lock member drive gear device.

Claims (1)

[Claims] (1) A rotating frame having a large-diameter disk drive motor and a disk table on one end and a small-diameter disk drive motor and a disk table on the other end, and a frame drive for rotating the rotating frame. a mechanism, a locking member that locks the rotating frame rotated by the frame driving mechanism at a predetermined position, and a locking member operating mechanism that operates the locking member, the frame driving mechanism including a motor; The locking member operating mechanism is composed of a planetary gear device that is rotationally driven by the motor, and a frame drive gear device that is connected to one output system of the planetary gear device, and the lock member operating mechanism is configured to rotate by the motor of the frame drive mechanism. 1. A disk drive device comprising: a planetary gear device; and a locking member driving gear device connected to the other output system of the planetary gear device.