JP4449730B2 - Disk unit - Google Patents

Description

The present invention relates to a disk device for reproducing, recording or erasing a disk such as a DVD, for example, and is particularly inexpensive and suitable for downsizing and thinning so that a heat radiation component can be efficiently cooled.

Conventionally, as a disk device technique, there is one described in Patent Document 1 and the like, and an example thereof will be described with reference to FIG. A loading pinion 5 that is rotated forward and backward by a loading motor 3 via a worm gear mechanism 4 is disposed at the front of the main chassis 2.
A rear part of a drive chassis 10 on which an optical pickup 7 capable of moving forward and backward a and b along with a guide rail 6 and a spindle motor 9 with a turntable 8 is pivotally supported by the main chassis 2 so as to be movable up and down. A cam slider 12 having a front portion of the chassis 10 engaged via a cam pin 11 is moved forward and backward in the main chassis 2 in the left-right direction c,
d is slidably arranged.

In the play mode shown in FIG. 8 (a), the slider rack 12a formed at one end of the cam slider 12 is engaged with the loading pinion 5 and the driving of the loading motor 3 is stopped in this state. The spindle motor 9 is driven to rotate the disk D through the turntable 8 at a high speed, and the feed pinion 13 is rotated forward and backward to move the optical pickup 7 forward and backward through the pickup rack 14. Then, information recorded on the disk D is read, and reproduction, recording, or erasing operations are performed.

When an unloading signal is input, the loading motor 3 is driven, the cam slider 12 is slid in the direction of the arrow c through the loading pinion 5 and the slider rack 12a, and the drive chassis 10 is moved down through the cam pin 11. As a result, the turntable 8 is lowered below the tray 1 and the disk D on the turntable 8 is transferred to the tray 1.

Next, when the slider rack 12 a is separated from the loading pinion 5, the tray groove 1 in which the projection 15 projecting from the cam slider 12 is formed on the lower surface of the tray 1 almost simultaneously.
6, the tray 1 is slightly moved forward a, and the tray rack 17 formed on the lower surface of the tray 1 is engaged with the loading pinion 5. Subsequently, as shown in FIG. 8B, the loading motor 3 is driven to advance the tray 1 through the loading pinion 5 and the tray rack 17, and the disk D is removed from the tray 1. The disk D is placed on the tray 1.

Thereafter, when a loading signal is input, the loading motor 3 is driven in reverse to perform the reverse operation, and the tray 1 is moved backward b and returned into the main chassis 2 (see FIG. 8A). ].

According to the above configuration, in the play mode, the inside of the main chassis 2 becomes hot due to heat radiation from the heat radiating parts such as the laser diode of the optical pickup 7, and in recent years, in particular, in the main chassis 2 due to downsizing and thinning of the disk device. However, there is a risk that electronic components such as IC chips will be thermally destroyed.

Therefore, a cooling fan is disposed in the main chassis 2 to cool heat radiating components such as a laser diode.
JP 2003-109370 A

In the above-described conventional configuration, providing the cooling fan increases the number of parts and increases the cost, and it is necessary to secure a space for providing the cooling fan in the main chassis 2. And contrary to the technical idea of reducing the thickness.

Therefore, it is conceivable to drive the fan using the loading motor 3 that is stopped in the play mode. The loading pinion 5 connected to the loading motor 3 via the worm gear mechanism 4 is a slider rack 12a. In this state, the driving of the loading motor 3 is hindered.

An object of the present invention is to provide a disk device that is inexpensive and suitable for downsizing and thinning and that can efficiently cool a heat-radiating component.

In order to achieve the above object, according to the first aspect of the present invention, a main chassis for supporting the disk mounting tray so as to be able to move forward and backward is provided, and forward and reverse are rotated by a loading motor at the front portion of the main chassis. A loading pinion is arranged, and the rear part of the drive chassis equipped with an optical pickup capable of moving forward and backward and a spindle motor with a turntable is pivotally supported by the main chassis so as to move up and down, and engages the front part of the drive chassis. The cam slider is slidably arranged on the main chassis in the left-right direction perpendicular to the forward / backward direction, and the slider rack formed at one end of the cam slider is engaged with the loading pinion to stop driving the loading motor. Drive the spindle motor by switching to play mode. And causes a high speed disk via the turntable, in the optical pickup by the forward-reverse disc apparatus that reads information recorded on the disc, the blower fan is used instead of the loading motor,
The blower fan casing has a blower opening facing the optical pickup, the blower fan bladed rotary shaft being linked to the loading pinion, and a plate disposed at the front of the drive chassis so as to be movable in the left-right direction. There is provided a clutch mechanism having a trigger, a trigger pin protruding from the front surface of the plate trigger and engaging with the cam slider, and a guide pin provided on the optical pickup facing a guide groove formed on the lower surface of the plate trigger. In play mode, the slider rack is separated from the loading pinion, and the blower fan is driven to blow out air from the air blowing port toward the optical pickup, and the optical pickup is advanced forward based on the unloading signal and guided. The pin is inserted into the guide groove, and the guide By pressing the down on the inclined surface of the guide groove, and characterized in that so as to mesh with the left and right direction to slide the rack slider cam slider in the loading pinion.

The invention according to claim 2 is provided with a main chassis that supports the disk mounting tray so as to be able to move forward and backward, and a loading pinion is disposed at the front of the main chassis,
The rear part of the drive chassis equipped with an optical pickup capable of moving forward and backward and a spindle motor with a turntable is pivotally supported by the main chassis so that it can move up and down, and a cam slider that engages the front part of the drive chassis is attached to the main chassis. The slider rack is formed at one end of the cam slider so as to be slidable in the left-right direction perpendicular to the forward / backward direction, and is opposed to the loading pinion by driving the spindle motor in the play mode via the turntable. In the disk device that rotates the disk at a high speed and moves the optical pickup back and forth to read the information recorded on the disk, a blower fan is provided in which the air outlet of the casing faces the optical pickup, The rotary shaft with blades of the blower fan Are operatively connected to use the pinion, to separate the slider rack in the play mode from the loading pinion, blowing air toward the optical pickup from the air blowing port by driving the blower fan, based on the unloading signal,
The cam slider is slid in one direction left and right by a clutch mechanism, and the slider rack is engaged with the loading pinion.

According to a third aspect of the present invention, the clutch mechanism includes a plate trigger disposed at the front portion of the drive chassis so as to be movable in the left-right direction, and a trigger pin that projects from the front surface of the plate trigger and engages the cam slider. The guide pin provided on the optical pickup is opposed to the guide groove formed on the lower surface of the plate trigger. Based on the unloading signal, the optical pickup is moved forward and the guide pin enters the guide groove. The cam pins are slid in one direction left and right so that the slider rack is engaged with the loading pinion by pressing the guide pin against the inclined surface of the guide groove.

The invention according to claim 1 corresponds to one embodiment (see FIGS. 1 to 7), and according to this, since the slider rack is separated from the loading pinion in the play mode, Even if the blower fan is driven, the drive is not hindered, and air can be blown out from the blower opening of the blower fan casing toward the optical pickup to efficiently cool the heat dissipating parts such as the laser diode.

In addition, since the blower fan doubles as a loading motor, the structure is simple, the number of parts is not increased, the cost is greatly reduced, and the disk unit is downsized compared to the conventional cooling fan. And suitable for thinning.

Furthermore, based on the unloading signal, the slider rack is engaged with the loading pinion simply by sliding the cam slider in the left and right direction by the clutch mechanism.
It is possible to return to a predetermined operation state.

Since the clutch mechanism has a plate trigger, a trigger pin, and a guide pin and is not bulky, it can be compactly incorporated on the drive chassis, and the clutch mechanism operates most forward based on an unloading signal. It is economical because it is driven by using no special driving source.

The invention according to claim 2 corresponds to the basic mode, and according to this, since the slider rack is separated from the loading pinion in the play mode, the drive is performed even if the blower fan is driven. The air is blown out from the blower opening of the blower fan casing toward the optical pickup, and the heat radiation component such as the laser diode can be efficiently cooled.

In addition, since the blower fan doubles as a loading motor, the structure is simple, the number of parts is not increased, the cost is greatly reduced, and the disk unit is downsized compared to the conventional cooling fan. And suitable for thinning.

Furthermore, based on the unloading signal, the slider rack is engaged with the loading pinion simply by sliding the cam slider in the left and right direction by the clutch mechanism.
It is possible to return to a predetermined operation state.

According to the third aspect of the present invention, the clutch mechanism has a plate trigger, a trigger pin, and a guide pin, and is not bulky. Therefore, the clutch mechanism can be compactly incorporated on the drive chassis, and the clutch mechanism can be used as an unloading signal. This is economical because it is driven by utilizing the operation of the optical pickup that is most advanced based on the above, and does not require a special drive source.

1 to 5 show a disk apparatus according to an embodiment of the present invention. A blower fan 19 is used in place of the loading motor 3, and the cam slider 12 is moved in the left-right direction c,
A clutch mechanism 20 is disposed on the drive chassis 10 for slightly sliding to d.

In FIG. 1, reference numeral 21 denotes a feed motor for rotating the feed pinion 13 forward and backward via a gear mechanism 22. Further, the pickup racks 14 are moved forward and backward within a certain range.
The lower rack member 1 is composed of two rack members 14a and 14b that are connected to each other.
4a is fixed to the optical pickup 7, and the upper rack member 14b is further advanced a than the lower rack member 14a. Furthermore, 23a designates the rear part of the drive chassis 10 as the main chassis 2
Two rubber rear elastic bodies (see FIG. 4) pivotally supported so as to move up and down e and f (see FIG. 4), 23b is made of two rubbers for connecting the front portion of the drive chassis 10 to a lifting body 24 capable of lifting and lowering. A cam pin 11 projects from the front surface of the elevating body 24, which is a front elastic body (see FIG. 4).

In FIG. 4, reference numeral 26 denotes a magnet-equipped disk holder that is disposed on the top plate portion 2 a on the main chassis 2 so as to be movable up and down within a certain range, facing the turntable 8. As shown in FIG. 5, each cam pin 11 is fitted into a pair of left and right cam grooves 27 formed in the vertical plate portion 12 b of the cam slider 12, and the cam slider 12 is slid in the direction of the arrow d, so By engaging 27a with each cam pin 11, the elevating body 24 is raised and the cam slider 12 is moved up.
Is moved in the direction of arrow c, and the lower step portion 27b of each cam groove 27 is engaged with each cam pin 11, whereby the elevating body 24 is lowered. In the configuration other than the above, substantially the same parts as those shown in FIG.

As shown in FIGS. 1 to 3, the blower fan 19 includes a casing 19a fixed to the main chassis 2, and a rotating shaft 19 with blades 19b disposed rotatably in the casing 19a.
c, the air outlet 29 of the casing 19a is opposed to the optical pickup 7, and the rotating shaft 1
9 c is connected to the worm gear 4 a of the worm gear mechanism 4. Reference numeral 30 denotes a vent hole provided in the casing 19a.

As shown in FIGS. 1, 4, and 5, the clutch mechanism 20 includes a plate trigger 32 disposed at the front portion of the drive chassis 10 so as to be movable within a certain range in the left and right directions c and d, and the plate trigger 32. The front end of the upper rack member 14b faces the guide pin 35 formed on the lower surface of the plate trigger 32 and the trigger pin 34 that is provided on the front surface of the cam slider 12 and is fitted into the trigger groove 33 formed on the vertical plate portion 12b of the cam slider 12. And a guide pin 36 provided on the head.

The operation will be described. In the play mode shown in FIGS. 1 and 2, the spindle motor 9 is driven to rotate the disk D at high speed via the turntable 8, and the feed pinion 1
By rotating 3 forward and backward, the optical pickup 7 moves forward and backward a and b through the pickup rack 14, reads information recorded on the disk D, and performs reproduction, recording or erasing operations. At the same time, the blower fan 19 is driven to blow out air from the air outlet 29 toward the optical pickup 7.

In this case, since the slider rack 12a is separated from the loading pinion 5, even if the blower fan 19 is driven, the drive is not hindered, and air is blown from the air blowing port 29 toward the optical pickup 7. It is possible to efficiently cool the heat radiation components such as the blowout and the laser diode.

Further, since the blower fan 19 also serves as the loading motor 3 (see FIG. 3), the structure is simple, the number of parts is not increased, and the cost can be greatly reduced as compared with the case where a conventional cooling fan is used. It is suitable for downsizing and thinning of the disk device.

When the unloading signal is input, as shown in FIG. 6A, the optical pickup 7 is moved forward a to enter the guide pin 36 into the guide groove 35, and the guide pin 36 is inclined to the guide groove 35. By pressing against the surface 35a, the plate trigger 32 and the trigger pin 3
4, the slider 12 a is slid in the direction of arrow c, and the slider rack 12 a is engaged with the loading pinion 5.

Next, the blower fan 19 is driven, and the cam slider 12 is slid in the direction of the arrow c via the worm gear mechanism 4 and the loading pinion 5 and the slider rack 12a. The drive chassis 10 is moved down through
As a result, the turntable 8 is lowered below the tray 1, and the disk D on the turntable 8 is transferred to the tray 1 (see the phantom line in FIG. 4).

According to the above configuration, the clutch mechanism 20 includes the plate trigger 32, the trigger pin 34, and the guide pin 36, and is not bulky. Therefore, the clutch mechanism 20 can be compactly incorporated on the drive chassis 10, and the clutch mechanism 20 This is economical because it is driven using the operation of the optical pickup 7 that moves forward based on the unloading signal and does not require a special drive source.

Next, as shown in FIG. 6B, the slider rack 12a is connected to the loading pinion 5.
At the same time, the projection 15 projecting from the cam slider 12 is pressed against the inclined surface 16a of the tray groove 16 formed on the lower surface of the tray 1 so that the tray 1 is slightly moved forward a. The tray rack 17 formed on the lower surface is engaged with the loading pinion 5.

Subsequently, as shown in FIG. 7, the pinion 5 for loading is driven by driving the blower fan 19.
The tray 1 is advanced a through the tray rack 17, the disk D is removed from the tray 1, and a new disk D is placed on the tray 1.

Thereafter, when a loading signal is input, the blower fan 19 is driven in reverse to perform the reverse operation, and the tray 1 is moved backward b and returned to the main chassis 2 (see FIG. 1).

It is a top view which shows the disc apparatus which is one Embodiment of this invention. It is a longitudinal cross-sectional view of the blower fan vicinity. It is a front view of the blower fan. It is a longitudinal cross-sectional view of the center part. It is a disassembled perspective view of the principal part. (A) is a schematic plan view which shows the front | former stage of an operation | movement procedure, (b) is a schematic plan view which shows the middle | stage of the same operation | movement procedure. It is a schematic plan view which shows the back | latter stage of the operation procedure. (A) is a schematic plan view which shows the front | former stage of the operation procedure of a prior art example, (b) is a schematic plan view which shows the back | latter stage of the operation procedure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray 2 Main chassis 3 Loading motor 5 Loading pinion 7 Optical pickup 8 Turntable 9 Spindle motor 10 Drive chassis 11 Cam pin 12 Cam slider 12a Slider rack 19 Blower fan 19a Casing 19b Blade 19c Rotating shaft 20 Clutch mechanism 29 Air outlet 32 Plate Trigger 33 Trigger groove 34 Trigger pin 35 Guide groove 35a Inclined surface of guide groove 36 Guide pin D Disk a, b Forward / backward c, d Left / right direction e, f Vertical movement

Claims (3)

An optical pickup and a turntable capable of moving forward and backward are provided with a main chassis that supports the disk mounting tray so as to be able to move forward and backward, and a loading pinion that is rotated forward and backward by a loading motor at the front of the main chassis. The rear part of the drive chassis with the attached spindle motor is pivotally supported by the main chassis so that it can move up and down, and the cam slider that engages the front part of the drive chassis is perpendicular to the main chassis in the left-right direction. The slider rack formed at one end of the cam slider is engaged with the loading pinion and the loading motor is stopped to enter the play mode, so that the spindle motor is driven and turned. The disc is rotated at high speed through the table In addition, in the disk apparatus in which the optical pickup is moved forward and backward to read the information recorded on the disk, a blower fan is used instead of the loading motor, and a blower port of the casing of the blower fan is connected to the optical pickup. A plate trigger disposed on the front of the drive chassis so as to be movable in the left-right direction and projecting from the front of the plate trigger. The clutch mechanism has a trigger pin that engages with the cam slider and a guide pin provided on the optical pickup facing the guide groove formed on the lower surface of the plate trigger, and the slider rack is loaded with a pinion for loading in the play mode. Drive the blower fan away from As a result, air is blown out from the air outlet toward the optical pickup, and based on the unloading signal, the optical pickup is moved forward to enter the guide groove and press the guide pin against the inclined surface of the guide groove. Thus, the disk device is characterized in that the cam slider is slid in one direction left and right to engage the slider rack with the loading pinion. A drive having a main chassis for supporting a disk mounting tray so as to be able to move forward and backward, a loading pinion disposed at the front of the main chassis, and an optical pickup capable of moving forward and backward and a spindle motor with a turntable The rear part of the chassis is pivotally supported by the main chassis so that it can move up and down, and a cam slider that engages the front part of the drive chassis is arranged on the main chassis so as to be slidable in the left-right direction perpendicular to the forward / rearward movement direction. A slider rack is formed at one end of the cam slider so as to face the pinion. The spindle motor is driven in the play mode to rotate the disk at a high speed through the turntable, and the optical pickup is moved forward and backward to the disk. Disc that reads recorded information A blower fan having a casing blower opening facing the optical pickup, and a rotary shaft with blades of the blower fan linked to the loading pinion for loading the slider rack in the play mode. By driving the blower fan away from the pinion, air is blown out from the air blowing port toward the optical pickup, and based on the unloading signal, the cam slider is slid in one direction left and right by the clutch mechanism, and the slider rack is loaded with the pinion A disk device characterized by being engaged with the disk device. The clutch mechanism is formed on the front portion of the drive chassis so as to be movable in the left-right direction, a trigger pin protruding from the front surface of the plate trigger and engaging the cam slider, and formed on the lower surface of the plate trigger. A guide pin provided on the optical pickup facing the guide groove. Based on the unloading signal, the optical pickup is advanced most forward to enter the guide groove, and the guide pin is inserted into the guide groove. 3. The disk device according to claim 2, wherein the cam slider is slid in one lateral direction by pressing against the inclined surface so that the slider rack is engaged with the loading pinion.

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