JPH10143964A - Disk drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of vibration and unpleasant noise even when a disk such as a CD is rotated at high speed. SOLUTION: This device is provided with a leaf spring 3 for fixing one end of a disk drive unit 2 to a chassis 4 and a cam member 12 for supporting the other end side of the disk drive unit 2 and also moving the disk drive unit 2 against energizing force of the leaf spring 3 to the side of the disk 13 by inserting a tray 6. The cam member 12 is provided with an engagement part for engaging with a part to be engaged, provided on the tray 6 immediately before this tray 6 is completely inserted and also slightly turning the cam member 12 by reaction force of the tray 6 when this tray 6 is further inserted. By engaging the part to be engaged is completely engaged with the engagement part, the disk drive unit 2 moved to the side of the disk 13 against the energizing force of the leaf spring 3 is further moved to the side of the disk 13, so that the other end side of the disk drive unit 2 is abutted against the chassis 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive for driving a disk, for example, a compact disk, and more particularly to an improvement in a disk drive in which vibration isolation is taken into consideration.

[0002]

2. Description of the Related Art A conventional device for driving a compact disk (hereinafter referred to as a CD) (hereinafter referred to as a CD drive) is
The configuration is as shown in FIG. That is, a spindle motor 101 for driving the disk, a pickup 102 for reading information recorded on the disk, and a traverse motor 103 for driving the pickup 102
The disk drive unit 104 provided with
05 at multiple locations. This attachment is performed with a screw 107 via a rubber 106 in order to prevent external vibration from being transmitted to the pickup 102. Note that there is a CD drive device in which another cushioning material such as plastic or cork is interposed instead of the rubber 106.

The frame 105 is provided with two engaging projections 108 on both sides thereof. Each of the engaging projections 108 enters an engaging recess 111 of a cam 110 provided on a chassis 109. Also, chassis 1
In 09, a clamp holder 112 is provided integrally or separately, so that a CD inserted between the spindle motor 101 and a turntable (not shown) that rotates integrally is sandwiched between them.

When a CD is inserted into a tray (not shown) in such a CD driving device and is inserted in the direction indicated by an arrow X, the tip of the tray becomes a protrusion 1 provided on a frame 105.
Hits 13 Then, the frame 105 is pushed in the direction indicated by the arrow X, and the engaging projections 108 are guided by the engaging recesses 111 to push the frame 105 upward, that is, toward the inserted CD.

The vertically movable metal member of the clamp holder 112 is attracted by the magnetic force of the turntable driven by the spindle motor 101, and the inserted CD is clamped. The CD is supported at its center by a turntable, and is driven at a high speed of several thousand revolutions per minute, which is said to be 4 times speed or 6 times speed. That is, the CD is floating from the tray during the rotation.

On the other hand, the pickup 102 is driven by a traverse motor 103 in the radial direction of the disk. A lens for reading information recorded on a CD is held in the pickup 102 in a kind of suspended state by the action of magnetic force. The lens follows the information track even if the information track has a pitch shift or an axial vibration, and the reading laser beam is focused on the track. In addition, the distance between the lens surface of the pickup 102 and the lower surface (= information recording surface) of the disk is
Strictly defined, reading is performed with high accuracy.

[0007]

However, when the CD is driven at a speed of about 5,000 revolutions per minute or more from the conventional 4 × speed or 6 × speed to 8 × speed or 12 × speed, the C
Disk drive unit 1 even if D has a slight eccentricity
From 04, vibration starts to occur. At this time, the vibration is not transmitted to the outside of the CD driving device by the rubber 106, but the vibration itself cannot be suppressed due to the presence of the rubber 106. As a result, the reading operation by the pickup 102 tends to be incomplete.

As a countermeasure, it is conceivable to suppress the vibration of the disk drive unit 104 by making the rubber 106 even harder. In this case, if an external impact is applied to the entire CD drive, the impact is applied to the disk drive. The light is easily transmitted to the drive unit 104, and the pickup 102 becomes weak to external vibration. Further, the vibration generated from the disk drive unit 104 is transmitted to other peripheral devices such as a hard disk drive, and has an adverse effect.
In addition, since the entire CD drive device vibrates, a collision or the like occurs between the components, and abnormal noise (unpleasant noise) is generated.

As described above, according to the method in which the disk drive unit 104 is mounted on the frame 106 via the cushioning material such as the rubber 106, the information cannot be read by the pickup 102 or the peripheral devices are adversely affected during high-speed rotation. Or generate unpleasant sounds. Especially,
At a speed higher than 12 times speed, it is not possible to cope with an increase in the accuracy of parts and an increase in the accuracy of assembly, and this is becoming a major technical barrier.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disk drive which does not generate vibration or unpleasant noise even when a disk such as a CD is rotated at a high speed.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and driving the reading means. A disk drive unit having a read drive mechanism to move the disk drive unit to a position where information can be read by inserting a tray on which a disk is mounted; and one end of the disk drive unit. And a cam member that supports the other end of the disk drive unit and moves the disk drive unit toward the disk against the urging force of the leaf spring by inserting a tray. In
The engaging portion provided on the tray is engaged immediately before the tray is completely inserted, the tray is further inserted, and the cam member is slightly rotated by the reaction force of the tray. The disk drive unit moving toward the disk against the urging force of the leaf spring is further moved toward the disk by completely engaging the engaged portion with the engagement portion, and the disk drive is moved to the chassis. The other end of the unit is abutted.

Further, according to the second aspect of the present invention, there is provided a disk drive unit having a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means. In a disk drive device that is movably mounted on a chassis and moves a disk drive unit to a position where information can be read by inserting a tray on which a disk is mounted, one end of the disk drive unit is fixed to the chassis via a leaf spring and The leaf spring is attached to the chassis and the drive unit in a state where the disk drive unit is constantly biased toward the disk and one end of the disk drive unit is constantly pressed against the chassis.

Further, according to the third aspect of the present invention, there is provided a disk drive unit having a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means. A leaf spring for fixing one end of the disk drive unit to the chassis, and a disk drive, wherein the disk drive unit is movably mounted on the chassis and the disk drive unit is moved to a position where information can be read by inserting a tray on which the disk is loaded. A cam member for supporting the other end of the unit and moving the disk drive unit toward the disk against the urging force of the leaf spring by inserting the tray, and holding a clamper for clamping the disk to the chassis. Is fixed.

According to a fourth aspect of the present invention, there is provided a disk drive unit having a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means. One end and the other end are movably attached to a chassis, and a disk drive unit for moving a disk drive unit to a position where information can be read by inserting a tray for mounting a disk, wherein a frame of the disk drive unit is made of metal, The chassis is made of resin, and the clamp holder for clamping the disc is made of metal.

According to a fifth aspect of the present invention, in the disk drive device according to the first, second, third or fourth aspect,
The disk drive unit is attached to the chassis via a frame, and the disk drive unit is fixed to the frame so as not to be movable. Further, in the invention according to claim 6, in the disk drive device according to claim 1, 2, 3, 4, or 5, the chassis is fixed to the case via an elastic member.

According to a seventh aspect of the present invention, in the disk drive device of the first, second, third, fourth, fifth or sixth aspect, the clamp holder for clamping the disk is made of metal, and at least the entire disk drive unit is formed. The size is to cover. Furthermore, in the invention described in claim 8, in the disk drive device described in claim 7, the clamp holder also serves as the case.

Further, according to the ninth aspect of the present invention, the first aspect of the present invention is provided.
9. The disk drive according to claim 1, wherein a disk drive motor for driving the disk is mounted on the other end of the disk drive unit, and a read drive motor for driving the reading means is mounted on one end of the unit. The means is operated between the two motors.

In the disk drive of the present invention, the disk drive unit is movably mounted on the chassis. This disk drive unit includes a disk drive mechanism, reading means, and this read drive mechanism. Then, one end of the disk drive unit is fixed to the chassis via a leaf spring.

On the other hand, the other end is supported by the cam member and is moved toward the disk against the urging force of the leaf spring. At this time,
When the disk drive unit is constantly urged toward the disk and a leaf spring is attached so that one end of the disk drive unit is always pressed against the chassis, the vibration of the disk drive unit can be absorbed.

Further, the cam member is engaged with the engaged portion provided on the tray immediately before the tray is completely inserted,
An engaging portion is provided for further inserting the tray and for slightly rotating the cam member by the reaction force of the tray. Then, the disk drive unit moving toward the disk against the urging force of the leaf spring is further moved toward the disk by the complete engagement between the engaged portion and the engagement portion, and the disk drive unit is moved to the chassis. When the other end of the disk drive unit is abutted, the cam drive member securely fixes the disk drive unit and the tray to the chassis. Therefore, the disk drive unit, the chassis, and the tray are integrated.

Further, when a metal clamp holder is fixed to the chassis, up to the clamp holder is integrated with the disk drive unit. And the integrated thing becomes sufficient weight. Therefore, the vibration of the spindle motor and the like in the disk drive unit is absorbed. In addition, when the chassis is attached to the case via an elastic member or the case is integrated into the case, for example, when it is attached to the PC body, the vibration of the spindle motor etc. is not transmitted to the hard disk etc. on the PC body side, the PC device Does not adversely affect internal devices.

In addition, if the chassis is made of resin and the disk drive unit and the clamp holder are made of metal, the metal material comes into contact with the resin and is fixed, which is preferable in terms of vibration absorption. Further, if the size of the clamp holder is set to cover at least the entire disk drive unit, dust can be prevented from being provided on the reading unit having a lens or the like.

The disk means a thin disk, and includes a large optical disk such as an LD or a DVD, a small optical disk such as an MD, a magnetic disk such as an HDD in addition to a CD. . The reading means means a means for reading information, and includes means having a function of both reading and recording, and means for recording only in addition to the means for reading only. Specifically, a magnetic head or the like may be used instead of the optical pickup. Further, the elastic member means a member having elasticity such as a spring or an elastic resin material in addition to rubber.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the disk drive 1 has a disk drive unit 2 to which a spindle motor or the like is attached, a chassis 4 to which the disk drive unit 2 is attached by a leaf spring 3,
A clamp holder 5 fixed to the chassis 4, a tray 6 inserted between the clamp holder 5 and the disk drive unit 2, a lower case 8 for attaching the chassis 4 via a rubber 7 serving as an elastic member, A circuit board 9 sandwiched between the chassis 4 and the lower case 8 to mount the chassis 4 thereon; an upper case 10 covering the apparatus together with the lower case 8; a front case 11 covering the front entrance; And a cam member 12 for moving the disk drive unit 2 up and down. The tray 6 has C
D13 is placed. When the tray 6 is inserted in the direction indicated by the arrow A, the disk drive unit 2 rises in the direction indicated by the arrow B.

As shown in FIGS. 2 and 3, the disk drive unit 2 drives a disk drive mechanism 20 for rotating the CD 13, a pickup 21 serving as reading means for reading information recorded on the CD 13, and a drive of the pickup 21. A reading drive mechanism 22;

The disk drive mechanism 20 includes a spindle motor 23 serving as a disk drive motor, and a turntable 24 attached to an output shaft of the spindle motor 23. The pickup 21 has a lens 25 and a support 26 that supports the lens 25. The reading drive mechanism 22 includes a traverse motor 27 serving as a reading drive motor for traversing the pickup 21, a first gear 28 and a position sensor plate 29 attached to an output shaft of the traverse motor 27, and a second gear meshing with the first gear 28. The gear 30, a third gear 31 meshing with the second gear 30, a pinion 32 meshing with the rack 26 a of the support 26 of the pickup 21, and guide bars 33, 33 guiding three engagement support portions 26 b. Have.

The disk drive mechanism 20 is supported by a metal frame 34 and is fixed to a metal frame 36 by mounting screws 35. A pin 37 is attached to the end of the frame 36 on the spindle motor 23 side, and a screw hole 3 for attaching the leaf spring 3 is provided on the opposite side.
8, 38 and engaging projections 39, 39 are provided. Note that the frame body 34 and the frame 36 may be one member instead of being separate members.

As shown in FIG. 4, the leaf spring 3 is a metal flat plate having a U-shaped cross section, and a rectangular hole 3a into which a bent portion 36a of the frame 36 enters is provided at the center. The plate spring 3 is provided with four screw holes 3b for attaching to the chassis 4 and the frame 36, and six holes 3c for positioning.

The chassis 4 is made of resin and has a rectangular shape as shown in FIGS. 5 and 6, and a drive unit hole 4a through which the disk drive unit 2 enters and exits is provided at the center. In addition to the cam member 12 with which the pin 37 of the frame 36 is engaged, the automatic eject mechanism 40 that automatically inserts the tray 6 and brings the CD 13 to the position to be ejected to the chassis 4, and the automatic eject mechanism 40 does not operate. A manual eject mechanism 41 for manually bringing the tray 6 to the discharge position, a first switch portion 42 which is turned on / off by a sliding operation of the cam member 12, and a second switch portion for detecting that the tray 6 has come to the CD 13 discharge position. 43, an attachment portion 44 for attaching the chassis 4 to the lower case 8, a contact projection 45 for pushing the leaf spring 3 downward, a slope projection 46 for pushing up the insertion tip of the tray 6, and a tray 6. And an upward movement preventing projection 47 for guiding the tray 6 and preventing the tray 6 from moving upward,
A projection 48 is provided each time the disk drive unit 2 abuts upon rising, and a positioning projection 49 formed at the center of one projection 48 is provided.

The automatic ejection mechanism 40 includes an ejector motor 50, a rotating body 52 whose rotation is transmitted by a belt 51, a first gear 53 that rotates integrally with the rotating body 52,
A second gear 54 meshing with the first gear 53;
A third gear 55 that rotates integrally with the gear 54, a fourth gear 56 that meshes with the third gear 55, a fifth gear 57 that rotates integrally with the fourth gear 56 and meshes with a rack gear 6 f formed on the tray 6. , Fourth gear 56 and fifth gear 57
And a cam drive member 58 that is rotatable about the center of the third gear 55 and has a gear portion that slides the cam member 12.

The manual eject mechanism 41 is composed of an eject member 60 having an abutting portion 60a against which an eject bar inserted from the front hole 4b of the chassis 4 abuts, and a pressing portion 60b engaging with the cam member 12. You. The eject member 60 is rotatable about a fulcrum 61, and is provided with a protrusion 60 c that fits into the guide hole 4 c of the chassis 4.

The cam member 12 which engages with the automatic ejection mechanism 40 and the manual ejection mechanism 41 is made of resin and has a long shape as shown in FIG. And the cam member 1
2 includes an engagement recess 62 into which the pin 37 is inserted, and a tray 6.
An engaging portion 63 that hits the engaged portion 6d and pushes the tray 6 toward the insertion side, a rack portion 64 that meshes with the gear portion of the cam driving member 58, and slide holes 65 and 65 that guide the sliding operation of the cam member 12. The manually engaged portion 66 with which the pressing portion 60b of the ejecting member 60 comes into contact, and the switch rod 42a of the first switch portion 42 are pushed into the first switch portion 4
A switch operation unit 67 for turning on and off the chassis 2;
And a stop part 68 for stopping the movement. Then, guide projections 4 d provided on the chassis 4 in the slide holes 65 of the cam member 12,
4d are fitted and slidable in the directions of arrows C and D.

The mounting portion 44 of the chassis 4 projects downward from the chassis 4 as shown in FIG. 8, and is provided with a rubber mounting portion 44a to which the figure-shaped rubber 7 shown in FIG. ing. Then, a metal screw mounting member 69 is inserted into the central hole 7a of the rubber 7.

As shown in FIG. 10, the contact projection 45 of the chassis 4 projects slightly upward and serves as a fulcrum for the vertical movement of the frame 36. In addition, the height h of the frame 36 placed on the contact protrusion 45 is the leaf spring 3.
Is set to be higher than the height H of the chassis 4 to which is attached. Thereby, the leaf spring 3 is always energized. That is, the urging force acts on the tray 6 side (in the direction of arrow B) on which the CD 13 is placed, and the frame 36 is pressed against the contact protrusion 45.

As shown in FIG. 11, the slope projection 46 of the chassis 4 has a slightly recessed recess 46a, a slope 46b following the recess 46a, and a flat surface 46 following the slope 46b.
c. Protrusion 4 per degree of chassis 4
As shown in FIGS. 12 and 13, reference numeral 8 protrudes from the plane portion of the chassis 4 by a slight height W. One of the projections 48 has a positioning, as shown in FIG. A projection 49 is provided at the center thereof.

The chassis 4 has a clamp holder 5
Holder mounting holes 4e for mounting
Two protrusions 4f for preventing the tray 6 brought to the position for discharging the tray 13 from coming out completely;
Four guide projections 4g for guiding the operation of inserting and discharging the tray 6, two screw holes 4h for attaching the leaf spring 3, and a positioning projection 4i for positioning the leaf spring 3 are provided.

The clamp holder 5 is made of metal and has a box shape (see FIGS. 14 and 15). And
At a position facing the turntable 24 on the insertion side of the CD 13, a clamp portion 70 serving as a clamper for clamping a disk is attached. The clamp holder 5 has a circular first circular protrusion 5 a surrounding the clamp portion 70,
A second circular projection 5b having a concave portion into which a part of the traverse motor 27 enters, three screw holes 5c at positions corresponding to the holder mounting holes 4e of the chassis 4, and four screw holes 5c entering the mounting portion 44 of the chassis 4. An engagement portion 5d is provided.

The tray 6 is made of a resin, as shown in FIGS.
As shown in FIG. 7, it is formed in a flat plate shape. The tray 6 has a loading section 6a on which the CD 13 is loaded, a central hole 6b into which the turntable 24 and the like enter, and a traverse motor 27.
Notch 6c for avoiding collision with the cam member 1
2d, a projection-shaped engaged portion 6d that engages with the second engaging portion 63, two detachable elastic arms 6e that prevent the tray 6 from being completely removed, and a fifth gear of the automatic eject mechanism 40. There are provided a rack gear portion 6f that meshes with 57, a guide groove portion 6g into which the guide protrusion 4g of the chassis 4 is fitted, and a switch operation portion 6h that operates the second switch portion 43.

The engaged portion 6d of the tray 6 is formed on the back surface of the tray 6, and is formed as a quadrangular projection as shown in FIGS.
i is provided. The detachable elastic arm 6e is
As shown in FIG. 19, it has an arm 6j and a claw 6k, and when the tray 6 is incorporated, the tray 6 enters while being bent in the direction of arrow E in FIG. On the other hand, when the tray 6 is pulled out, the claw portions 6k are disengaged by the protrusions 4f.
And never escape. When the user wants to pull out, he pushes the operating part 6m rightward in FIG. 19 and bends the resilient arm 6e in the direction indicated by arrow E.

The lower case 8 is made of metal. As shown in FIG. 21, a chassis fixing portion 80 on which the circuit board 9 is mounted and a screw (not shown) inserted into the mounting portion 44 of the chassis 4 is fitted. One location is provided at each of the four corners. The chassis fixing portion 80 is a hemispherical projection, and has a screw hole 81 at the center thereof. Further, the lower case 8 is provided with two chassis supporting portions 82, which are large hemispherical projections on which the center of the circuit board 9 is placed, and to take in air that enters between the circuit board 9 and the lower case 8. There are provided a plurality of air intake holes 83 formed at the rear and side, and a lower cut-and-raised portion 84 cut and raised inward to lock the lower portion of the front case 11. In addition,
The air intake hole 83 is formed so as to extend not only to the rear and side wall portions but also to a part of the bottom portion.

As shown in FIG. 22, the circuit board 9 is formed in a flat plate shape, and screw insertion holes 85 are provided at four corners at positions corresponding to the screw holes 81 of the lower case 8. further,
The circuit board 9 has a small hole 86 serving as a relief hole for a protrusion at the lower end of the eject motor 50, a small rectangular hole 87 serving as a relief hole for a bent end of the frame 36, and a protrusion at the lower end of the spindle motor 23. Large hole 88 which becomes the escape hole of
And a large rectangular hole 89 serving as an escape hole at the lower end of the pickup 21 and an air hole 90 formed at a position facing the air intake hole 83 on the side of the lower case 8.

The upper case 10 is made of metal and has a box shape as shown in FIG. And, in the upper case 10,
An upper cut-and-raised portion 91 that is cut and raised inward to lock the upper portion of the front case 11, and a side cut-and-raised portion 92 that is cut and raised inward to lock the side of the front case 11. And a plurality of air holes 93.

The attachment of the frame body 34 to the frame 36 is configured as shown in FIG. That is, the frame 3
The four arm portions 34 a at four corners are mounted on a resin mounting portion 36 b provided on the frame 36 and fixed by screws 35. The arm portion 34a is formed by providing a cutout groove 34b, and has a bifurcated end.

The state where the disk drive unit 2 is mounted on the chassis 4 is as shown in FIGS. 25 and 26. 27 shows a state where the circuit board 9 is placed on the lower case 8, the chassis 4 with the disk drive unit 2 is mounted thereon, and the clamp holder 5 is further covered.

Next, an operation when the tray 6 on which the CD 13 is placed is inserted into the disk drive device 1 having such a configuration will be described with reference to FIGS.

When the CD 13 is placed, first, the front case 1
A switch button for driving the tray 6 provided in one portion to the discharge side is pressed. Then, the ejector motor 50 rotates, and the automatic eject mechanism 40 operates. This allows
The tray 6 meshing with the fifth gear 57 and the rack gear 6f is driven in the discharge direction. Then, when the switch operating section 6h of the tray 6 presses the second switch section 43, the ejector motor 50 stops. The stopped state is shown in FIG.
8 (A), which is the position where the CD 13 is placed. At this time, even if the user tries to pull out the tray 6, the tray 6 cannot be pulled out because the slip-out preventing elastic arm 6 e abuts on the slip-out preventing protrusion 4 f of the chassis 4.

When the CD 13 is placed on the tray 6 and the tray 6 is slightly inserted, the second switch 43 returns to the original position, and the ejector motor 50 is turned on. Then, the fifth gear 57 rotates clockwise in FIG. 25 via the gear train,
The tray 6 is driven in the insertion direction. The rack gear portion 6f of the tray 6 is bent at its terminal end into a semicircular shape, and the fifth gear 57 meshing with the rack gear portion 6f includes:
It rotates along this bent portion. This rotation causes the cam driving member 58 to rotate in the direction indicated by the arrow F in FIG.

When the cam drive member 58 rotates, its gear rotates in the direction of arrow F in FIG. For this reason, the cam member 12 having the rack portion 64 that meshes with the gear portion is not shown in FIG.
25 and slide in the direction of arrow D in FIG. Then, the pin 37 in the engaging recess 62 of the cam member 12 is guided by the engaging recess 62 and moves upward. Therefore, the disk drive unit 2 integrated with the pin 37 rises against the urging force of the leaf spring 3. This state is shown in FIG.

At this time, the projection 48 of the chassis 4
As shown in FIG. 29A, the relationship between the frame 36 and the frame 36 is such that a slight gap g exists. On the other hand, as shown in FIG. 30A, the pin 37 abuts on the lower end surface of the engagement concave portion 62, and the cam member 12 is rotated in the direction of arrow G by the urging force of the leaf spring 3, as shown in FIG. Try to let it. However, the engaged portion 6d of the tray 6 hits the slope 63a of the engaging portion 63 of the cam member 12, and its rotation is prevented.

When the tray 6 is further inserted immediately before the tray 6 is completely inserted, the tip of the tray 6 rides on the slope projection 46 of the chassis 4 as shown in FIG. At the same time, the engaged portion 6d of the tray 6 completely engages with the engaging portion 63 of the cam member 12, and the cam member 1
2 is rotated in the direction of arrow J as shown in FIG.
The pin 37, that is, the disk drive unit 2 is slightly raised. For this reason, the frame 36 is as shown in FIG.
As shown in (4), the projections 48 of the chassis 4 completely come into contact with the projections 48. As a result, the disk drive unit 2 is integrated with the chassis 4 without any gap. When the cam member 12 slides in the direction indicated by the arrow D and enters a state as shown in FIG. 30B, the switch operation section 67 of the cam member 12 operates the first switch section 42 to turn off the ejector motor 50. .

On the other hand, the tray 6 receives the reaction force of the cam member 12, and a part of the tray 6 abuts the upper movement preventing projection 47 provided on the chassis 4 from below, while the tip of the tray 6 is inclined. In order to ride on the protruding part 46, each of those parts is firmly fixed to the chassis 4.

Thus, the disk drive unit 2 and the tray 6 are firmly fixed to the chassis 4 by the action of the cam member 12. Therefore, after this, the spindle motor 23
Is turned on and the disk drive mechanism 20 is operated, or the traverse motor 27 is turned on and the read drive mechanism 22 is operated, without rattling. In addition, the vibration generated by the spindle motor 23, the traverse motor 27, and the like is caused by the disk drive unit 2, the leaf spring 3, the chassis 4,
It is received by the total weight of the clamp holder 5 and the tray 6, making it difficult to vibrate. Moreover, even if these vibrate as a whole, the vibrations are
The upper case 10 and the lower case 8
And does not reach the fixing part that fixes them.

By turning on the spindle motor 23 and the traverse motor 27 and operating the reading circuit, the pickup 21 reads the information recorded on the CD 13. At this time, the pickup 21 operates in the radial direction of the CD 13, and the movement is performed between the spindle motor 23 and the traverse motor 27 in the radial direction. After the drive of the CD 13 is completed, the tray 6 is driven to the discharge side. This operation is as described above. When the disk drive unit 2 is not raised, the cam member 1
Reference numeral 2 denotes a backlash so that the pin 37 can be smoothly guided up or down. The lowering of the disk drive unit 2 is smoothly performed by the urging force of the leaf spring 3 and gravity.

In the above embodiment, since the frame 34 and the frame 36 are fixed by the mounting screws 35, the structure of the frame 34 for mounting the pickup 21 and the like does not become complicated. Further, since the circuit board 9 is sandwiched between the chassis 4 and the lower case 8, the circuit board 9 is securely fixed. In addition, since a space for taking in air is provided between the lower case 8 and the circuit board 9, and an air intake hole 83 is provided behind the lower case 8, the temperature of circuit components mounted on the circuit board 9 rises. Can be prevented. The air intake hole 83 may be provided in front of the lower case 8.

In the above embodiment, the clamp holder 5 covers not only the entire disk drive unit 2 but also the eject mechanism 40 and the like.
Not only the pickup 21 but also the eject mechanism 40 and the like can be dust-proof, and the disk drive device has high reliability.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. is there. For example, the frame 34 and the frame 36 of the disk drive unit 2 may be integrated as one part without being separated. Further, the frame body 34 and the frame 36 may be made of resin, the chassis 4 may be made of metal, and the clamp holder 5 may be made of resin. Further, the circuit board 9 may be attached further below the lower case 8 or above the clamp holder 5. Also, the lower case 8 and the upper case 1
0 is not necessarily required, and the clamp holder 5
May also serve as the upper case 10.

[0058]

As described above, in the disk drive according to the first aspect, the disk drive unit is firmly fixed to the chassis by the action of the cam member and the tray, so that the chassis and the disk drive unit are integrated. And no rattling occurs. For this reason, even if vibration is generated by the spindle motor or the like, the vibration is absorbed, so that the disk can be read even when the disk is rotated at a high speed, and unpleasant noise such as rattling does not occur.

According to the second aspect of the present invention, since one end of the disk drive unit and the chassis are firmly abutted and fixed by the leaf spring, there is no gap at one end and no rattling occurs. Therefore, even if vibration is generated by the spindle motor or the like, no unpleasant noise is generated at one end.

Further, in the third aspect of the present invention, since the metal clamp holder is fixed to the chassis, the chassis, the disk drive unit and the clamp holder are integrated, the weight increases, and the vibration is reliably absorbed. .

Further, in the disk drive device according to the fourth aspect, the frame and the clamp holder of the disk drive unit attached to the chassis are made of metal, and the weight is increased.
On the other hand, since the chassis is made of resin, the overall weight does not become extremely heavy. Moreover, since the chassis is made of resin, it can be secured so that there is no gap when it is attached to a metal member, and if there is a gap, the rattling noise is small. Becomes

Further, according to the fifth aspect of the present invention, the disk drive unit is fixed to the frame and attached to the chassis via the frame, so that the frame of the disk drive unit is not complicated. In addition, in the invention according to claim 6, since the chassis to which the disk drive unit is attached is fixed to the case via the elastic member, the vibration generated in the disk drive unit portion is not transmitted to the case side. Therefore, vibration is not transmitted to a device to which the disk drive device is attached, for example, a hard disk in a personal computer, and does not adversely affect the device.

According to the seventh aspect of the present invention, the weight increases and the vibration is further absorbed by the clamp holder. In addition, dust proof is sufficiently provided for the disk drive unit to which the important components such as the pickup are attached. Furthermore, according to the eighth aspect of the invention, the case member can be omitted, and the size and cost can be reduced. In addition, according to the ninth aspect of the present invention, since the two motors that cause vibration are arranged near the support, vibration can be suppressed. In addition, the radial vibrations generated by both motors are easily offset by the vibrations of both motors, and the radial vibration of the reading unit is reduced. Therefore, even if the disk is rotated at a high speed, reading errors and the like are reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a basic configuration of a disk drive device of the present invention.

FIG. 2 is a plan view of a disk drive unit in the disk drive of the present invention.

FIG. 3 is a bottom view of the disk drive unit of FIG. 2;

4A and 4B are diagrams showing a leaf spring in the disk drive device of the present invention, wherein FIG. 4A is a plan view thereof, and FIG. 4B is a side view as viewed from the direction of arrow B in FIG.

FIG. 5 is a plan view of a chassis in the disk drive device of the present invention.

FIG. 6 is a bottom view of the chassis of FIG. 5;

7A and 7B are views showing a cam member in the disk drive device of the present invention, wherein FIG. 7A is a perspective view thereof, and FIG. 7B is an arrow B of FIG.
It is the front view seen from the direction.

8A and 8B are diagrams showing a mounting portion of the chassis of FIG. 5, wherein FIG. 8A is a plan view and FIG. 8B is a side view.

9A and 9B are diagrams showing an elastic member in the disk drive device of the present invention, wherein FIG. 9A is a side view and FIG. 9B is a plan view.

10 is a view showing the vicinity of a leaf spring attached to a chassis in the disk drive device of the present invention, and is a sectional view taken along line XX of FIG. 6;

11 is a view showing the vicinity of a slope projection of a chassis in the disk drive device of the present invention, and is a cross-sectional view taken along the line XI-XI of FIG. 5;

12 is a view showing the vicinity of a positioning protrusion of the chassis in the disk drive device of the present invention, and is a cross-sectional view along XII-XII in FIG. 6;

FIG. 13 is a view showing the vicinity of a projection of the chassis in the disk drive device of the present invention, and is a view taken along the line XIII-XIII of FIG. 6;
It is sectional drawing.

FIG. 14 is a plan view of a clamp holder in the disk drive device of the present invention.

FIG. 15 is a side view of the clamp holder of FIG. 14;
FIG. 5 is a view as seen from the arrow XV direction.

FIG. 16 is a plan view of a tray in the disk drive of the present invention.

FIG. 17 is a bottom view of the tray in FIG. 16;

18 is a sectional view taken along line LL of FIG.

19 is a sectional view taken along line MM of FIG.

20 is a sectional view taken along the line NN in FIG. 17;

FIG. 21 is a perspective view of a lower case in the disk drive device of the present invention.

FIG. 22 is a plan view of a circuit board in the disk drive of the present invention.

FIG. 23 is a perspective view of an upper case in the disk drive device of the present invention.

FIG. 24 is a diagram showing a fixing state of the frame and the frame of the disk drive unit in the disk drive device of the present invention.
5 is a partial side view as viewed from the direction of arrow P in FIG.

FIG. 25 is a plan view showing a state in which a disk drive unit in the disk drive of the present invention is mounted on a chassis.

FIG. 26 is a bottom view of the chassis with a disk drive unit of FIG. 25.

FIG. 27 is a partial side view of the vicinity of a mounting portion where a circuit board, a disk drive unit, a chassis, and a clamp holder are mounted on a lower case of the disk drive device of the present invention.

FIGS. 28A and 28B are diagrams showing the operation of the disk drive of the present invention when the tray is inserted, wherein FIG. 28A shows the state before the tray is inserted, FIG. 28B shows the state immediately before the tray is completely inserted, and FIG. It is a partial cross-sectional side view which shows the state respectively performed.

FIGS. 29A and 29B are cross-sectional views of the vicinity of a protrusion of the disk drive device of the present invention, wherein FIG. 29A is a diagram showing a state immediately before the tray is completely inserted, and FIG. It is.

FIG. 30 is a cross-sectional view of the vicinity of the cam member of the disk drive device according to the present invention, wherein FIG.
(B) is a diagram showing a state when the tray is completely inserted.

FIG. 31 is a partial perspective view of a conventional disk drive.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 disk drive device 2 disk drive unit 3 leaf spring 4 chassis 5 clamp holder 6 tray 6 d engaged portion 7 rubber (elastic member) 8 lower case 9 circuit board 10 upper case 11 front case 12 cam member 13 compact disk (disk) Reference Signs List 20 disk drive mechanism 21 pickup (reading means) 22 read drive mechanism 23 spindle motor (disk drive motor) 27 traverse motor (read drive motor) 63 engaging part

Claims (9)

[Claims] 1. A disk drive unit comprising a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means is movably mounted on a chassis.
A disk drive that moves the disk drive unit to a position where the information can be read by inserting a tray on which the disk is mounted; a leaf spring that fixes one end of the disk drive unit to the chassis; A cam member for supporting the other end of the disk drive unit and moving the disk drive unit toward the disk side against the urging force of the leaf spring by inserting the tray, wherein the cam member is provided on the tray. The engaged portion and the tray are engaged immediately before the tray is completely inserted, and an engaging portion is provided in which the tray is further inserted and the cam member is slightly rotated by a reaction force of the tray, By completely engaging the engaged portion with the engaging portion, the engaged portion moves toward the disc against the urging force of the leaf spring. The disc drive units in,
The disk drive device further comprising: moving the disk drive unit to the disk, and abutting the other end of the disk drive unit against the chassis. 2. A disk drive unit including a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means, is movably mounted on a chassis,
In a disk drive device for moving the disk drive unit to a position where the information can be read by inserting a tray on which the disk is placed, one end of the disk drive unit is fixed to the chassis via a leaf spring, and The disk wherein the leaf spring is attached to the chassis and the disk drive unit in a state where the disk drive unit is constantly urged toward the disk and one end of the disk drive unit is constantly pressed against the chassis. Drive. 3. A disk drive unit having a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means, movably mounted on a chassis,
A disk drive that moves the disk drive unit to a position where the information can be read by inserting a tray on which the disk is mounted; a leaf spring that fixes one end of the disk drive unit to the chassis; A cam member for supporting the other end of the disk drive unit and moving the disk drive unit to the disk side against the urging force of the leaf spring by inserting the tray, and for clamping the disk to the chassis. A disk drive device, wherein a metal clamp holder for holding a clamper is fixed. 4. One end and the other end of a disk drive unit having a disk drive mechanism for rotating a disk, reading means for reading information recorded on the disk, and a read drive mechanism for driving the read means, are mounted on a chassis. In a disk drive device which is movably mounted and which moves the disk drive unit to a position where the information can be read by inserting a tray on which the disk is mounted, a frame of the disk drive unit is made of metal, and the chassis is A disk drive device comprising a resin and a metal clamp holder for clamping the disk. 5. The disk according to claim 1, wherein said disk drive unit is attached to said chassis via a frame, and said disk drive unit is immovably fixed to said frame. Drive. 6. The disk drive according to claim 1, wherein the chassis is fixed to the case via an elastic member. 7. The apparatus according to claim 1, wherein the clamp holder for clamping the disk is made of metal and has a size to cover at least the entire disk drive unit.
7. The disk drive according to 2, 3, 4, 5, or 6. 8. The disk drive according to claim 7, wherein said clamp holder also serves as a case. 9. A disk drive motor for driving the disk is attached to the other end of the disk drive unit, and a read drive motor for driving the reading means is attached to the one end of the disk drive unit. 9. The disk drive according to claim 1, wherein the disk drive is operated between the two motors.