JPH10199087A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely execute locking and releasing operations for disk, by providing a mechanism which drives vertically a clamp chassis for holding a clamper pressurizing a disk to a disk loading section, and a mechanism, which controls the elevating movement of the clamper. SOLUTION: A suspension chassis 3 holds a turntable 5, on which a disk is placed, and the recorded information reproducing section of the disk. The chassis 3 is elastically held to a main chassis 1 through a damper. During disk inserting/ejecting operations, a clamp chassis 11, which is supported to the chassis 3 in a freely movable manner, is abutted to the bottom surface of an upper chassis 20 and is controlled against a going up motion. Due to the reaction force, the chassis 3 is pushed down, locked and a gap, which has a sufficient space for inserting/ejecting operations, is secured. After the disk is inserted into the device, the chassis 11 is driven downward, is separated from the chassis 20 and the lock of the chassis 3 is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive which is mounted on a vehicle or the like for use in a vehicle, and particularly has a mechanism for locking a signal reading section supported by an elastic member such as a damper so as to be immovable. .

[0002]

2. Description of the Related Art Conventionally, as a disk device of this kind, a device described in Japanese Patent Application Laid-Open No. H5-151763 is known. FIG. 12 is a plan view showing a conventional disk device.

In FIG. 12, reference numeral 112 denotes a drive chassis holding a reproducing mechanism for recording information on the disk D. When locking the drive chassis 112,
The drive lever 123 is driven in the E direction, and the connection link 12
8, the lock lever 132c of the first lock member 132, the lock groove 135a of the second lock member 135, and the lock pin 141b of the third lock member 141 are respectively moved to the drive chassis. The fourth lock member 145 is driven by the third lock member 141 in the direction E, and the lock protrusion 145 c is locked to the drive chassis 112. The respective lock members 132, 135, 14
The drive chassis 112 is restricted from the opposite directions by 1 and 145 and locked.

When the lock is released, the drive lever 123 is driven in the direction C and the switching lever 121 is moved in the direction A so that the lock members 132, 135, 1
41 and 145 respectively act in the opposite directions to release the regulation of the drive chassis 112.

[0005]

However, in the above-mentioned conventional disk device, a plurality of lock members are slid or rotated through a plurality of levers to lock and release a recorded information reproducing section of the disk. However, there is a problem that the lock mechanism is complicated and the number of parts increases.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides an excellent disk device which can reliably lock and unlock the recorded information reproducing section of the disk with a simple mechanism having a small number of parts. It is intended to do so.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a suspension chassis which holds a disk mounting portion and a recorded information reproducing portion of a disk and is elastically supported by a device housing so as to be vertically movable. A clamp chassis that holds a clamper that presses the disc against the mounting portion and is supported by the suspension chassis so as to be able to move up and down; an upper chassis that regulates the upward movement of the clamp chassis; and drives the clamp chassis up and down. And driving means for performing the operation.

Thus, the recording information reproducing section of the disk can be reliably locked and unlocked with a simple mechanism having a small number of components.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 of the present invention provides a suspension chassis which holds a disc mounting portion and a recorded information reproducing portion of a disc and is elastically supported by a device housing so as to be vertically movable; A clamp chassis that holds a clamper that presses the disc against the mounting portion and that is supported by the suspension chassis so as to be vertically movable; an upper chassis that regulates upward movement of the clamp chassis; and a drive that drives the clamp chassis up and down Means for locking and unlocking the recording information reproducing section of the disk with a simple mechanism having a small number of parts.

Further, the invention according to claim 2 is characterized in that the suspension chassis is locked by pressing the clamp chassis against the upper chassis, and the recording information reproducing section of the disk is locked by a simple mechanism. It has the effect that it can be performed.

Further, according to a third aspect of the present invention, when the disk is inserted into a position above the mounting portion, the clamp chassis is driven downward, the clamp chassis is separated from the upper chassis, and It is characterized by releasing the lock, and has an effect that the lock of the recording information reproducing section of the disk can be released by a simple mechanism.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment) FIGS. 1 to 4 show a disk drive according to an embodiment of the present invention. FIG.
2 is a left side view, FIG. 3 is a right side view, and FIG. 4 is a side sectional view. FIG. 5 is a front sectional view. 6 to 12 are explanatory diagrams showing the operation states of the disk device.

1 to 5, reference numeral 1 denotes a box-shaped main chassis having four side surfaces, and four dampers 2 each containing oil are fixed to four corners of the main chassis 1. Reference numeral 3 denotes a suspension chassis elastically supported via pins 3a inserted into holes provided in the damper 2. The suspension chassis 3 holds a spindle motor 4 and a pickup unit (not shown) for reading recorded information on the disk D. Have been. A turntable 5 on which the disk D is mounted is fixed to the spindle motor 4.

Reference numeral 6 denotes a left slide lever having a flat plate shape, and 7 denotes a right slide lever having an L-shaped cross section. The left slide lever 6 and the right slide lever 7 are respectively provided on the left and right side surfaces of the suspension chassis 3. Holes 3b, 3
c and guided by the elongated holes 3d and 3e, and slidably supported by the suspension chassis 3. Reference numeral 8 denotes a connecting lever.
Holes 8a, 8b through which shafts 3f and 3g are fixed
And is rotatably supported on the upper surface of the suspension chassis 3. A long hole 8c is formed at the left end of the connection lever 8, and a pin 6a fixed to a protruding piece of the left slide lever 6 passes through the long hole 8c.
Is formed at the right end thereof, and a pin 7a fixed to the right slide lever 7 passes through the long hole 8d.

Reference numeral 9 denotes a driving gear rotatably supported on the lower surface of the suspension chassis 3.
Is formed coaxially with a large-diameter gear 9a meshing with a gear connected to a drive motor M (not shown) and a small-diameter gear 9b meshing with a rack plate 10 slidably supported by the right slide lever 7. ing. An elongated hole 10a is formed in the rack plate 10, and a pin 7b fixed to the right slide lever 7 penetrates the elongated hole 10a. Here, the rack plate 10
1 is constantly urged upward (rear side of the apparatus) in FIG. 1 by a spring (not shown), so that the pin 7b is in contact with one end of the elongated hole 10a (front side of the apparatus), and the disk D When no is inserted, the engagement with the small diameter gear 9b is released.

Reference numeral 11 denotes a clamp chassis having a U-shaped cross section. In the clamp chassis 11, a pin 11a fixed to the lower surface of the clamp chassis 11 penetrates a guide hole 3h provided on the upper surface of the suspension chassis 3. The pin 3i fixed to the left side of the suspension chassis 3 fits into the slit 11b formed on the left side,
The suspension chassis 3 is vertically movably supported. Also, inclined cam grooves 11c and 11d are formed on the left side surface of the clamp chassis 11, and pins 6b and 6c fixed to the left slide lever 6 are fitted into these inclined cam grooves 11c and 11d, respectively. . further,
An inclined cam groove 11 e is formed on the right side surface of the clamp chassis 11, and a pin 7 c fixed to a projecting piece of the right slide lever 7 is fitted into the inclined cam groove 11 e.

Reference numeral 12 denotes a driving roller, and the driving roller 12 is rotatably held on a roller shaft 13 via a slip mechanism. The roller shaft 13 is rotatably supported by protrusions 11f and 11g formed on both side surfaces of the clamp chassis 1, and a roller gear 14 is fixed to one end thereof. The roller gear 14 is a large-diameter gear 9a of the drive gear 9.
Driven by a drive motor M via a gear train that meshes with.

Reference numeral 15 denotes a disk guide. Pins 15a and 15b are formed on both side end surfaces of the disk guide 15, and these pins 15a and 15b are formed on projecting pieces 11f and 11g on both side surfaces of the clamp chassis 11. The disc guide 1
5 is supported by the clamp chassis 11 so as to be able to move up and down. The disc guide 15 is provided on the clamp chassis 11.
The driving roller 1 is always driven by a leaf spring 16 fixed to
2 is urged in the direction in which it comes into contact. Reference numeral 15c denotes a protrusion formed on the side end of the disk guide 15, and the protrusion 15c is arranged at a position where it comes into contact with the suspension chassis 3 when the clamp chassis 11 descends.

Reference numeral 17 denotes a switching lever rotatably supported by a shaft 11g fixed to the lower surface of the clamp chassis 11, and pins 17a and 17
b is fixed. The pin 17a is in contact with the circumferential end face of the disk D to be inserted, and the pin 17b is in contact with one end face of the rack plate 10 described above. Reference numeral 11h denotes a stop pin for regulating the insertion position of the disk D to be inserted, and is fixed to the lower surface of the clamp chassis 11.

Reference numeral 18 denotes a clamper located above the turntable 5. The clamper 18 is held in a state of being biased in the direction of the turntable 5 by an elastic piece 19a of a leaf spring 19 fixed to the clamp chassis 11. ing. The leaf spring 19 has locking pieces 19 formed at its four corners.
A flange 19f, which is held by the clamp chassis 11 by b, 19c, 19d, and 19e, and receives the periphery of the clamper 18 urged by the elastic piece 19a, is formed.

Reference numeral 20 denotes an upper chassis located above the clamp chassis 11;
Reference numeral 0 is attached to attachment pieces formed at four corners of the main chassis 1 with screws or the like. 21 is an upper chassis 2 at one end
The suspension spring is fixed to 0 and the other end is fixed to the suspension chassis 3. The suspension springs 21 are provided at two locations on both left and right sides.

The operation of the present embodiment configured as described above will be described. 1 to 5 show a state where the disk D is not inserted. That is, the pins 6b, 6c, and 7c fixed to the left slide lever 6 and the right slide lever 7 slidably supported on both sides of the suspension chassis 3, respectively, are inclined on both sides of the clamp chassis 11. The cam grooves 11c, 11d,
11e, the distance between the clamp chassis 11 and the suspension chassis 3 is the maximum dimension. The suspension chassis 3 is urged toward the upper chassis 20 by the elastic force of the suspension spring 21 and the damper 2. Therefore, as shown in FIG. 5, the upper surface of the clamp chassis 11 is
The suspension chassis 3 is in a locked state in which the height direction is regulated by contacting the lower surface of the suspension chassis 3.

When the disk D is inserted between the disk guide 15 and the drive roller 12 from the direction of arrow B shown in FIG. 1, the disk D is driven by the disk guide 15 to which the urging force of the leaf spring 16 acts. The roller 12 is urged. When the insertion of the disk D is detected by a detector (not shown), the roller gear 14 is driven to rotate by a drive motor M via a gear train, whereby the drive roller 12 rotates and the disk D is drawn into the apparatus. It is. The circumferential end surface of the disk D drawn into the device is a stop pin 11
h, the insertion position is regulated. Immediately before the disk D contacts the stop pin 11h, the pin 17a fixed to the switching lever 17 contacts the end face of the disk D, and the switching lever 17 rotates about the shaft 11g.

When the switching lever 17 rotates, a pin 17b fixed to one end thereof presses the end face of the rack plate 10, and
The rack plate 10 is slid in front of the device overcoming the biasing force. When the rack plate 10 slides toward the front of the device, the rack plate 10 is moved to the small-diameter gear 9 of the drive gear 9 as shown in FIG.
meshes with b. The large-diameter gear 9a of the driving gear 9 is rotated by the driving force of a driving motor M (not shown), and the rack plate 10
Further, the rack slides forward (in the direction of the arrow in FIG. 6), and the other end of the elongated hole 10a formed in the rack plate 10 comes into contact with a pin 7b fixed to the right slide lever 7, and thereafter, the rack plate 10 The right slide lever 7 is integrally guided by the elongated holes 3d and 3e of the suspension chassis 3 and slides forward of the device.

When the right slide lever 7 slides forward of the apparatus, as shown in FIG. 7, the pin 7a fixed to the right slide lever 7 pushes the side surface of the elongated hole 8d, and the connection lever 8 rotates. The connecting lever 8 rotates while the side surfaces of the long holes 8a and 8b are regulated by the shafts 3f and 3g, so that the left slide lever 6 is inserted through the pin 6a fitted into the long hole 8c.
Moves in the direction opposite to the right slide lever 7 (on the rear side of the apparatus).

As shown in FIGS. 8 to 10, when the left slide lever 6 and the right slide lever 7 slide,
Since the pins 6b, 6c, and 7c move to positions above the inclined cam grooves 11c, 11d, and 11e formed on both side surfaces of the clamp chassis 11, the clamp chassis 11 and the suspension chassis 3 come closer to each other, and the gap therebetween becomes narrower. . The distance between the clamp chassis 11 and the suspension chassis 3 is reduced as they approach each other. At this time, the clamp chassis 11 and the suspension chassis 3 are guided by the pins 11a and the guide holes 3h and the slits 11b and the pins 3i and move up and down, respectively. As a result, at the same time when the clamp chassis 11 is separated from the lower surface of the upper chassis 20, the suspension chassis 3 is raised by the elastic force of the suspension spring 21 and the damper 2, and the load due to the weight of the device acting on the suspension chassis 3 and the elastic force described above. Is elastically supported at a neutral position.

FIG. 11 shows a state in which the suspension chassis 3 is elastically supported and the lock is released. At this time, the driving roller 12 moves down together with the clamp chassis 11 and separates from the disk D, and is separated from the gear train transmitting the driving force from the motor M. Further, when the disk guide 15 descends together with the clamp chassis 11, the projection 15c comes into contact with the suspension chassis 3 and separates from the disk D. At this time, the disc D is pressed by the clamper 18 on which the elastic force of the elastic piece 19a of the leaf spring 19 acts and is placed on the turntable 5, and the clamper 18 is separated from the flange 19f of the leaf spring 19. It becomes rotatable with the disk D. As a result, the disk D is rotated by the spindle motor 4, and recorded information is reproduced by a pickup unit (not shown).

Next, the operation when the disk D is ejected to the outside of the apparatus will be described. When the disc D is ejected, the drive motor M (not shown) rotates in the reverse direction, and the drive gear 9 rotates in the direction opposite to the direction shown in FIG.
0 moves in a direction opposite to the direction shown in FIG.
The left slide lever 6 and the right slide lever 7 respectively slide in the opposite directions to the above, and the pins 6b, 6
c, 7c move to positions below the inclined cam grooves 11c, 11d, 11e formed on both side surfaces of the clamp chassis 11. As a result, the distance between the clamp chassis 11 and the suspension chassis 3 increases, and the clamp chassis 1
The upper surface of the suspension chassis 3 contacts the lower surface of the upper chassis 20 to restrict the height direction, and the suspension chassis 3 is about to be pushed downward. The state shown in FIG. In FIG. 2, since the drive roller 12 and the disk guide 15 urge the disk D, the disk D is conveyed to the outside of the apparatus and ejected by the rotation of the drive roller 12.

As described above, according to the embodiment of the present invention, the roller gear 14 meshed with the gear connected to the driving means is provided.
When the drive roller 12 rotates, the disk D is inserted into the apparatus, and the switching lever 17 rotates to rotate the rack plate 10.
The driving force of the motor M is transmitted to the left slide lever 6
When the right slide lever 7 slides, the clamp chassis 11 moves downward and the distance between the clamp chassis 11 and the suspension chassis 3 is reduced, so that the locked state is released and the suspension chassis 3 is moved to the suspension spring 2.
1 and the damper 2, and can be elastically supported at a position where the load due to the weight of the device acting on the suspension chassis 3 and the elastic force are neutral.

According to the embodiment of the present invention, when the disk is transported in the locked state, the upper surface of the clamp chassis 11 is brought into contact with the lower surface of the upper chassis 20 to regulate the height position. Since the suspension chassis 3 is pushed down against the elastic force of the damper 2 to regulate the height position, the insertion or ejection of the disk D into or out of the device may damage the surface of the disk D. In addition to securing a gap that can be reliably performed without generating the problem, the height of the entire device can be reduced, and the device can be made thinner.

[0031]

As described above, the present invention provides a suspension chassis which holds a disc mounting portion and a recorded information reproducing portion of the disc and is elastically supported by a device housing so as to be vertically movable.
A clamp chassis that holds a clamper that presses the disc against the mounting portion and is supported by the suspension chassis so as to be vertically movable; an upper chassis that regulates the upward movement of the clamp chassis; and a drive that drives the clamp chassis up and down Means for pressing the clamp chassis against the upper chassis to lock the suspension chassis, and when the disk is inserted into the upper position of the mounting portion, driving the clamp chassis downward, thereby clamping the suspension. Since the chassis can be released from the upper chassis and the suspension chassis can be unlocked, the effect of being able to securely lock and unlock the recording information reproducing section of the disk with a simple mechanism having a small number of parts is achieved. Have.

[Brief description of the drawings]

FIG. 1 is a plan view of a disk device according to an embodiment of the present invention.

FIG. 2 is a left side view of the disk device.

FIG. 3 is a right side view of the disk device.

FIG. 4 is a side sectional view of the disk device.

FIG. 5 is a front sectional view of the disk device.

FIG. 6 is a plan view showing the operation of the disk device.

FIG. 7 is a plan view showing the operation of the disk device.

FIG. 8 is a left side view showing the operation of the disk device.

FIG. 9 is a right side view showing the operation of the disk device.

FIG. 10 is a front sectional view showing the operation of the disk device.

FIG. 11 is a left side view showing the operation of the disk device.

FIG. 12 is a plan view of a conventional disk drive.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main chassis 2 Damper 3 Suspension chassis 6 Left slide lever 7 Right slide lever 8 Connecting lever 11 Clamp chassis 12 Drive roller 15 Disk guide 17 Switching lever 18 Clamper 19 Leaf spring 20 Upper chassis 21 Suspension spring D Disk M Motor

Claims (3)

[Claims] 1. A suspension chassis, which holds a mounting portion of a disk and a recorded information reproducing portion of the disk and is elastically supported by a device housing so as to be vertically movable, and a clamper for pressing the disk against the mounting portion. A disk device comprising: a clamp chassis supported by a suspension chassis so as to be able to move up and down; an upper chassis that restricts upward movement of the clamp chassis; and a drive unit that drives the clamp chassis up and down. 2. The disk device according to claim 1, wherein the suspension chassis is locked by pressing the clamp chassis against the upper chassis. 3. The apparatus according to claim 2, wherein the clamp chassis is driven downward when the disk is inserted into the upper position of the mounting portion, to separate the clamp chassis from the upper chassis, and to unlock the suspension chassis. The disk device according to claim 1, wherein