JPH11353752A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk device equipped with an eject locking mechanism capable of releasing the locking of a movable body such as a tray housed in a casing by a small operating force at the time of unlocking, and exhibiting a strong locking force resistible to vibration or impacts in a locked state. SOLUTION: A CD-ROM drive in this device is provided with a cabinet 2 and a drawer 1 freely detachable from the cabinet 2, on which a disk is loaded. Further, the CD-ROM drive is provided with a locking projection part 13 provided in the cabinet 2 for holding the drawer 1 in the cabinet 2, a locking lever 14 moved in the thickness direction of the disk to be loaded on the drawer 1 and engaged with the locking projection part 13 when the drawer 1 is inserted into the cabinet 2 and thereby locking the drawer 1 in a fixed position in the cabinet 2, and a gear cam 15 for moving the locking lever 14 in a direction along the surface of the disk loaded in the drawer 1 and releasing the locking with the locking projection part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device for reproducing an optical disk such as a CD-ROM or a DVD-ROM.

[0002]

2. Description of the Related Art Conventionally, in a disk drive for a notebook personal computer, as shown in FIG. 6, a movable body called a drawer 51 equipped with a disk drive / reproduction mechanism for driving and reproducing a disk, and There is a disk drive having a thin structure including a cabinet 52 which is a housing capable of storing the drawer 51.

In such a disk drive, an eject lock mechanism is provided at a distal end 53 of the drawer 51 in a discharge direction. For example, when the eject button 54 provided on the front of the drawer 51 is pressed, the drawer 51 is moved. When the user manually pushes the drawer 51 discharged from the cabinet 52 and inserted into the cabinet 52, the drawer 51 is inserted into the cabinet 52.
Is locked in a state in which is stored.

In this eject lock mechanism, as shown in FIG. 7, a lock lever 55 is provided on the drawer 51, and when the drawer 51 is inserted into the cabinet 52, a lock projection 56 provided on the cabinet 52 is provided. And the lock lever 55 are engaged, and the drawer 51 is locked in the cabinet 52. Meanwhile, locked drawer 5
1 is such that the lock lever is electrically operated via a motor or a solenoid provided on the drawer 51 to release the lock, and the drawer 51 is ejected from the cabinet 52.

[0005]

However, such an eject lock mechanism moves the drawer 1 in the discharge direction (Y
Eject spring biasing in two directions) and lock lever 5
The claw 55a of the lock lever 55 is fixed to the lock projection 5 by interaction with a lock spring that biases the claw 55a of the lock lever 55 toward the cabinet 52 (Z direction) with the lever rotation shaft 57 as a fulcrum.
Therefore, when the lock is released, not only the frictional force generated on the engagement surface between the claw 55a and the lock protrusion 56 due to the urging force of the eject spring but also the lock spring It is necessary to rotate the lock lever 55 while resisting the urging force.
A large driving force was required to rotate the. In addition, this type of eject lock mechanism has an engagement surface 56a so as to obtain a strong lock force that can withstand vibration or impact.
Is often inclined in the direction in which the drawer 51 is inserted (Y1 direction), which also causes a large force to release the lock.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a lock of a movable body such as a tray housed in a housing can be released with a small operating force when the lock is released. In this regard, it is an object of the present invention to provide a disk device provided with an eject lock mechanism exhibiting a strong lock force capable of withstanding vibration or impact.

[0007]

In order to achieve the above object, a disk drive according to the present invention has a housing, a disk mounted thereon, and a disk mounted on the housing. A movable body that can be inserted and removed, and a protrusion provided on the housing, for holding the movable body in the housing,
The movable body is provided on the movable body, and when the movable body is inserted into the housing, the movable body moves in a thickness direction of the disk mounted on the movable body, and engages with the protrusion to move the movable body into the housing. A lock lever for locking the body in a fixed position, and a release means for moving the lock lever in a direction along a surface of the disk mounted on the movable body to release the lock with the projection. It is characterized by doing.

Further, the disk device of the present invention is characterized in that
As described in the above, a housing, a disk is mounted, and a movable body that can be inserted into and removed from the housing, and a movable body that is provided on the movable body and holds the movable body in the housing. A protrusion, provided on the housing, when the movable body is inserted into the housing, moves in a thickness direction of the disk mounted on the movable body, and engages with the protrusion to move the movable body; A lock lever for locking a body in a fixed position in the housing, and a release for moving the lock lever in a direction along a surface of the disk mounted on the movable body to release a lock with the protrusion. Means.

Further, according to a third aspect of the present invention, there is provided a disk device, wherein a housing, a disk is mounted, a movable body which can be inserted into and removed from the housing, and On the other hand, an urging means for urging the movable body in a direction in which the movable body is withdrawn, a projection provided on the housing or the movable body, and for holding the movable body in the housing, When inserted into the housing while opposing the urging force of the urging means, the disk moves in the thickness direction of the disk mounted on the movable body and engages with the projection, and the urging means A lock lever that locks the movable body at a fixed position in the housing in cooperation with an urging force, and moves the lock lever in a direction along a surface of the disk mounted on the movable body to form the protrusion. And a cam for unlocking the To.

[0010] The disk device of the present invention is characterized in that:
4. The disk device according to claim 3, wherein the engaging surface with which the projection and the lock lever engage is inclined toward the insertion direction of the movable body with respect to the housing. It is characterized by. According to the disk device of the present invention, when the movable body is locked in the housing,
The lock lever moves in the thickness direction of the disk mounted on the movable body and engages with the projection to perform locking. On the other hand, when unlocked, the lock lever moves along the surface of the disk mounted on the movable body. By moving in the direction, the engagement with the protrusion is lost, and the lock can be released. Therefore, in order to obtain a strong locking force, for example, even if the engagement portion of the lock lever with the protrusion receives a biasing force in the thickness direction of the disc, the lock lever can be moved without resisting this biasing force. Since the lock can be released by moving in the direction along the surface of the disk mounted on the movable body, the lock can be released by moving the lock lever with a small operating force.

Further, according to the disk device of the present invention, the movable body is urged against the housing in a direction in which the movable body is pulled out, and the engagement surface where the projection and the lock lever engage with each other. The structure is tilted toward the insertion direction and the operation of the lock lever is regulated by a cam or the like, so that the lock lever can be securely positioned at a predetermined lock position except when the lock is released. In the locked state where the movable body is held at a fixed position in the body, a strong locking force that can withstand vibration or impact is exerted.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing the overall configuration of a so-called notebook-type CD-ROM drive to which the present invention is applied.

The CD-ROM drive comprises a drawer 1 which is a movable body on which a disk drive / reproduction mechanism for driving and reproducing a disk (not shown) is mounted, and a cabinet 2 serving as a housing capable of storing the drawer 1. It is composed of The cabinet 2 is composed of an upper cabinet and a lower cabinet, but the illustration of the upper cabinet is omitted in FIG. The drawer 1 can be freely moved in and out of the cabinet 2 in directions indicated by arrows Y1-Y2. That is, a drawer 1 is provided on both inner walls of the cabinet 2.
Guide rail 3 having a U-shaped cross section for supporting the guide
Are fixed, and guide protrusions 4 provided on both sides of the drawer 1 are supported by the guide rails 3 via slide rails 5.

The drawer 1 has a disk outer recess 6 formed in a concave shape corresponding to the disk outer shape, a disk drive mechanism such as a disk motor (not shown) and a turntable 7, and a rotating disk. A pickup 8 for reading data from the disc by irradiating the recording area with laser light and taking in reflected light thereof, and a pickup feed mechanism (not shown) for transporting the pickup 8 in the radial direction of the disc are provided. The above-described mechanism for driving the disk and the mechanism for supporting and transporting the pickup 8 are mounted on a single mechanical chassis 9 to constitute a disk drive unit. It is supported by a floating structure via members. Further, the tip of the drawer 1 in the discharge direction is provided at the time of disc reproduction or the like.
An eject lock mechanism 11 is provided for locking the drawer 1 at a fixed position in the cabinet 2 and ejecting the drawer 1 from the inside of the cabinet 2 by pressing an eject button 10 at the time of disc replacement or the like.

The eject lock mechanism 11, as shown in FIGS. 2 and 3, realizes lock / unlock by cooperating with a lock projection 13 projecting from the surface of the bottom plate 12 of the cabinet 2. When the drawer 1 is inserted into the cabinet 2, the drawer 1 is engaged with the lock projection 13 and incorporated into a horizontal rotation support shaft 14 a provided on the bottom surface of the drawer 1 on the bottom plate 12 side of the cabinet 2. A lock lever 14 for locking the locker 1 in a fixed position in the cabinet 2 and a lock lever 14 mounted on a cam rotation support shaft 15a provided on the bottom surface of the drawer 1 and extending in a direction along the surface of a disk mounted on the turntable 7. And a worm gear 16a provided on the bottom surface of the drawer 1 and meshing with the gear cam 15 is assembled to a rotating shaft 16b. Together they are rare, a motor 16 for rotating the Giakamu 15 transmits the driving force to the worm gear 16a through the rotation shaft 16b, one end is supported on the bending 12a of the bottom plate 12 in the cabinet 2,
The other end is mainly supported by a boss 1 a provided on the bottom surface of the drawer 1, and mainly includes an eject spring 17 for urging the drawer 1 in a direction to pull out the drawer 1 from the inside of the cabinet 2.

The lock lever 14 has a horizontal rotation support shaft 14a.
, A horizontal rotation lever 14b that rotates in a direction along the surface of the disk mounted on the turntable 7, and a vertical rotation support shaft 14c that is supported by the end of the horizontal rotation lever 14a.
And a vertical rotation lever 14d that rotates in the thickness direction of the disk mounted on the turntable 7 with the
When the horizontal rotation lever 14b rotates in the direction along the disk surface,
The horizontal rotation lever 14b and the vertical rotation lever 14d operate integrally. On the other hand, when the vertical rotation lever 14d rotates in the thickness direction of the disk, the vertical rotation lever 14d
It operates independently.

The horizontal rotation lever 14b has a cam engaging boss 14e formed at one end thereof and a cam groove 15 of the gear cam 15.
When the gear cam 15 rotates as shown in FIG. 4, the lock lever 14 rotates in the direction along the disk surface through the cam groove 15b.

On the other hand, one end of the vertical rotation lever 14d has a vertical rotation support shaft 1 inserted into the vertical rotation lever 14b.
The bearing which supports 4a is provided. The other end of the vertical rotation lever 14b opposite to the side on which the vertical rotation support shaft 14a is inserted is provided with a claw portion 14f that engages with the lock projection 13. The claw portion 14f and the lock protrusion 13
In order to ensure that the drawer 1 is securely locked to the cabinet 2, in addition to the eject spring 18 that urges the drawer 1 in the direction of pulling out of the drawer 1 (Y2 direction), the claw portion 14f is moved from the drawer 1 side to the cabinet. A lock spring (not shown) that urges the second bottom plate 12 (Z direction) is provided. Further, an engagement surface 13 between the claw portion 14f and the lock protrusion 13 is provided.
“a” is inclined in the insertion direction (Y2 direction) of the drawer 1 with respect to the cabinet 2 so that a strong locking force can be obtained, and matches the movement trajectory accompanying rotation of the lock lever 14 in the direction along the disk surface. It is curved.

As described above, the gear cam 15 is provided with the cam groove 15b, and the cam groove 15b is formed so as to be eccentric with respect to the cam rotation support shaft 15a serving as the rotation center of the gear cam 15. Thereby, the cam groove 15
b denotes a lock projection 13 and a claw 14 of a lock lever 14.
The locked / unlocked state can be freely created with f. That is, when the cam rotation support shaft 15a and the cam engagement boss 14e are brought close to each other through the cam groove 15b, the lock projection 13 and the claw portion 14f are engaged to create a locked state, and the cam rotation support shaft 15a When the cam engaging boss 14e moves away, the lock projection 13 and the claw 14f
Are unlocked and an unlocked state is created.

At this time, the rotation position of the gear cam 15 at which the cam rotation support shaft 15a and the cam engagement boss 14e approach each other to create a locked state is the stop position in the rotation of the gear cam 15. Therefore, a rotation position detection switch (not shown) is provided to detect that the gear cam 15 has rotated to the stop position. Also, the eject button 10
Is pressed, the motor 16 that rotates the gear cam 15 via the worm gear 16a starts rotating at a relatively low speed so that an unlocked state is reliably created, and the gear cam 15 makes one rotation to the stop position. When the rotation is detected by the rotation position detection switch, the motor 16 stops the rotation.
A microcomputer (not shown) is provided to control the rotation of the gear cam 15. Therefore, such a lock lever 1
4 operates in the direction along the surface of the disk mounted on the turntable 7 when the lock is released as shown in FIG. 4, while the cabinet 2 as shown in FIGS. With the operation of inserting the drawer 1 into the inside, the claw portion 14f moves over the lock projection 13 and engages while engaging the urging force of the eject spring 17 and the lock spring, thereby operating in the thickness direction of the disk.

In the CD-ROM drive configured as described above, the case where the drawer 1 is actually accommodated in the cabinet 2 and locked, and the case where the lock is released and the drawer 1 is ejected from the cabinet 2 will be described. I do.

First, the case where the lock is applied will be described. As shown in FIG.
When the drawer 1 is pushed in the direction in which the drawer 1 is accommodated in the cabinet 2 (Y1 direction) while resisting the urging force of the eject spring 17 in a state in which the lock lever 14 is pulled out, as shown in FIG. The claw portion 14f contacts the lock protrusion 13. Further, when the drawer 1 is pushed, the vertical rotation lever 14d of the lock lever 14 is pressed against the vertical rotation support shaft 1 while resisting the urging force (Z1) of a lock spring (not shown).
4c, the claw 14f is rotated in the thickness direction of the disk mounted on the turntable 7 over the lock protrusion 13 and engages with the protrusion 13 to thereby engage with the protrusion 13 as shown in FIG. , The drawer 1 is locked in the cabinet 2. At this time, the engaging surface 13a between the claw portion 14f and the lock protrusion 13 is inclined in the insertion direction side (Y1 direction) of the drawer 1 with respect to the cabinet 2, and the eject spring 17 controls the lock lever 14 with respect to the cabinet 2. Between the drawer 1 and the lock spring biasing the claw portion 14f from the drawer 1 side to the bottom plate 12 side of the cabinet 2 (Z1 direction). A strong locking force is exerted by the action.

Next, a case where the lock by the eject lock mechanism is released and the drawer 1 is discharged from the cabinet 2 will be described.

First, as shown in FIG.
When the user presses the eject button 10 in a state in which the drawer 1 is housed and locked, for example, the motor 16 starts to rotate at a relatively low speed via the microcomputer, and as shown in FIG. , The gear cam 15 is rotated. When the gear cam 15 is rotated, the cam engaging boss 14e of the lock lever 14 inserted into the cam groove 15b is
is moved in a direction away from a. As a result, the lock lever 14 rotates in the thickness direction of the disk mounted on the turntable 7 with the horizontal rotation support shaft 14a as a fulcrum, the engagement between the claw portion 14f and the lock protrusion 13 is released, and the lock is released. . At this time, the driving force for rotating the lock lever 14 is equal to or greater than the frictional force with the unlocking portion 13 generated by the force of the pawl portion 14f pressing the engagement surface 13a via the urging force of the lock spring and the eject spring 17. It suffices if there is an operating force, and the lock can be released with a relatively small force. As the engagement between the claw portion 14f of the lock lever 14 and the lock protrusion 13 is released, the ejection spring 17
The drawer 1 is ejected from the cabinet 2 as shown in FIG. Thereafter, when it is detected by the rotation position detection switch that the gear cam 15 has rotated once to the initial stop position, the drive of the motor 16 is stopped through the microcomputer.

As described above, according to the CD-ROM drive of the present embodiment, the lock lever 14 can be operated three-dimensionally, and when the drawer 1 is locked in the cabinet 2, the lock lever 14 is locked. 14 is moved in the thickness direction of the disk mounted on the drawer 1, and the lock projection 13 engages with the claw 14f of the lock lever 14 to perform locking.
4 moves in the direction along the surface of the disk mounted on the drawer 1, the engagement between the lock projection 13 and the claw 14f is lost, and the lock can be released. Therefore, the lock lever 14 is mounted on the turntable 7 of the drawer 1 without the claw 14f of the lock lever 14 resisting the urging force of the lock spring received from the thickness direction of the disk mounted on the turntable 7 of the drawer 1. Can be moved in a direction along the surface of the disc to be locked, so that the lock can be released by moving the lock lever 14 with a small operating force.

Further, according to the CD-ROM drive of the present invention, the drawer 1 is urged against the cabinet 2 in a direction to pull out, and the lock projection 13 and the claw 1 of the lock lever 14 are pressed.
4f is engaged with the drawer 1 with respect to the cabinet 2 in a direction in which the drawer 1 is inserted into the cabinet 2, and the operation of the lock lever 14 is restricted by the cam groove 15b of the gear cam 15. Except at the time of release, the lock lever 14 can be securely positioned at a predetermined lock position. In the lock state where the drawer 1 is held at the fixed position of the cabinet 2, a strong lock force capable of withstanding vibration or impact is provided. can get.

In the CD-ROM drive of the present embodiment, the lock projection 13 is formed on the cabinet 2,
Although the eject lock mechanism 11 including the lock lever 14 and the gear cam 15 is provided on the drawer 1, the lock protrusion 13 is formed on the drawer 1, and the eject lock mechanism 11 including the lock lever 14 and the like is provided on the cabinet 2. Is also good.

In this embodiment, the case where the present invention is applied to a CD-ROM drive has been described.
The present invention can be applied to various types of disk drives, such as a D-ROM drive and a CD drive.

[0030]

According to the disk drive of the present invention, when the movable body is locked in the housing, the lock lever is
It moves in the thickness direction of the disk mounted on the movable body and locks by engaging with the protrusion, while when unlocked, the lock lever moves in the direction along the surface of the disk mounted on the movable body As a result, the engagement with the projection is lost, and the lock can be released. Therefore, in order to obtain a strong locking force, for example, even if the engagement portion of the lock lever with the protrusion receives a biasing force in the thickness direction of the disc, the lock lever can be moved without resisting this biasing force. Since the lock can be released by moving in the direction along the surface of the disk mounted on the movable body, the lock can be released by moving the lock lever with a small operating force.

Further, according to the disk device of the present invention, the movable body is urged against the housing in a direction in which the movable body is pulled out, and the engaging surface where the projection and the lock lever are engaged with each other. The structure is tilted toward the insertion direction and the operation of the lock lever is regulated by a cam or the like, so that the lock lever can be securely positioned at a predetermined lock position except when the lock is released. In the locked state where the movable body is held at a fixed position in the body, a strong locking force that can withstand vibration or impact is exerted.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a CD-ROM drive according to an embodiment of the present invention.

FIG. 2 is a detailed view showing a state in which a drawer is removed from the inside of the cabinet in the CD-ROM drive of FIG. 1;

FIG. 3 is a diagram schematically showing a lock operation by a lock lever of the CD-ROM drive of FIG. 1;

FIG. 4 is a detailed view showing a state in which the lock by the lock lever is released in the CD-ROM drive of FIG. 1;

FIG. 5 is a detailed view showing a state in which a drawer is inserted into the cabinet and locked by a lock lever in the CD-ROM drive of FIG. 1;

FIG. 6 is a perspective view schematically showing a conventional CD-ROM drive.

FIG. 7 is a diagram schematically showing a lock operation by a lock lever of a conventional CD-ROM drive.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drawer 2 ... Cabinet 7 ... Turntable 10 ... Eject button 11 ... Eject lock mechanism 12 ... Bottom plate of cabinet 13 ... Lock projection 13a ... Engaging surface 14 ... Lock lever 14a ... Horizontal rotation support shaft 14b Horizontal rotation lever 14c Vertical rotation support shaft 14d Vertical rotation lever 14f Claw 15 Gear cam 15b Cam groove 16 Motor 16a Worm gear 17 … Eject spring Applicant Toshiba Corporation Toshiba Abu E Co., Ltd. Attorney Patent Attorney Saichi Suyama

Claims (4)

[Claims] 1. A housing, a movable body on which a disk is mounted and which can be inserted into and removed from the housing, and a protrusion provided on the housing and holding the movable body in the housing. The movable body is provided on the movable body, and when the movable body is inserted into the housing, the movable body moves in a thickness direction of the disk mounted on the movable body, and engages with the protrusion to move the movable body. A lock lever for locking the lock lever at a fixed position in the housing, and a release means for moving the lock lever in a direction along a surface of the disk mounted on the movable body to release the lock with the projection. A disk device, comprising: 2. A housing, a movable body on which a disk is mounted and which can be inserted into and removed from the housing, and a protrusion provided on the movable body for holding the movable body in the housing. Provided in the housing, when the movable body is inserted into the housing, moves in the thickness direction of the disk mounted on the movable body, engages with the protrusion, and moves the movable body A lock lever for locking the lock lever at a fixed position in the housing, and a release means for moving the lock lever in a direction along a surface of the disk mounted on the movable body to release the lock with the projection. A disk device, comprising: 3. A housing, a movable body on which a disk is mounted and which can be inserted into and removed from the housing, and urging means for urging the housing in a direction in which the movable body is removed. A projection provided on the housing or the movable body, for holding the movable body in the housing, and the movable body is inserted into the housing while resisting the urging force of the urging means. When the movable body moves in the thickness direction of the disk mounted on the movable body and engages with the protrusion, the movable body is moved to a fixed position in the housing in cooperation with the urging force of the urging means. A lock lever for locking, and a cam for moving the lock lever in a direction along a surface of the disk mounted on the movable body to release a lock with the protrusion. Disk device. 4. The disk device according to claim 3, wherein the engagement surface with which the projection and the lock lever are engaged includes:
A disk device, wherein the disk device is inclined toward the insertion direction of the movable body with respect to the housing.