JPH0620378A - Temperature detector - Google Patents

Abstract

PURPOSE:To provide a temp. detector capable of detecting the temp. of a disk cartridge even in the case of a disk driving system in which the cartridge does not move up and down when it is inserted in a loading mechanism. CONSTITUTION:A temp. detecting sensor 300 is incorporated into one among the cartridge pressing spring parts 31-34 of a cartridge holder 28, the temp. of a disk cartridge 101 is detected and the power of laser is controlled at the time of recording.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature detecting device for a disc cartridge in which an optical disc, a magneto-optical disc and the like are rotatably housed in the disc cartridge.

[0002]

2. Description of the Related Art By optical or magneto-optical means
In a recording medium in which information signals can be written or read, or both written and read, the temperature of the medium at the time of writing or reading greatly influences recording and reproduction, so the temperature of this medium is extremely important. It has become.

For example, in a magneto-optical disk, the recording thin film expands and contracts depending on the temperature condition, so that the writing position or the erasing position of the signal of the magnetic head that applies a magnetic field to the recording thin film may be displaced, which is accurate. In some cases, information signals cannot be written / erased.

Further, in a magneto-optical disk, a high laser power is required because it is necessary to raise the temperature of the recording thin film above the Curie point during recording and erasing, and comparison is made to the extent that recorded information is not demagnetized during reproduction. A very low laser power is required. Therefore, these laser powers must be set in consideration of the temperature of the recording medium so that optimum recording / reproduction can be performed. For example, even if the laser power at the time of recording is set to the optimum condition at a certain temperature of the recording medium, the laser power at the time of recording is too low or too high due to the temperature change of the medium, and good magnetization reversal cannot be performed. There is. Similarly, if the laser power at the time of reproduction or at the time of erasure is too large or too small, the recorded information signal may be demagnetized or may be left unerased.

On the other hand, in an optical disc, the temperature during recording is particularly important, and if the optimum temperature during recording fluctuates even a little, the pit size may change.

For this reason, conventionally, a sensor for temperature detection is provided in a disk drive device which mounts a disk cartridge and writes and / or reads an information signal to and from a recording medium housed in the cartridge. The temperature of the magnetic head has been detected, and the position of the magnetic head and the laser power have been controlled based on the detection result.

The present applicant has previously proposed such a temperature detecting device for a disc cartridge.

This structure will be described with reference to FIG. Figure 1
0, the disk cartridge 101 is the upper half 108
The magneto-optical disk 102 is rotatably housed.

A disk cartridge 1 is mounted on the chassis 2.
A spindle motor 3 for chucking and rotating the disk 102 housed in 01 is provided. At the tip of the spindle motor 3, there is provided a disk table 3a that attracts the chucking hub portion 101a of the disk 102 and rotatably supports the disk 102.

When the disc cartridge 101 is inserted from the cartridge insertion opening formed on the panel surface, the cartridge holder and the disc cartridge 101 are both lowered by the loading mechanism and mounted on the disc table 3a. Height positioning pins 208 that support the disk cartridge 101 are provided on the chassis 2 so that the disk 102 does not hit the cartridge 108.

Further, on the chassis 2, the disk 10
A positioning pin 209 is provided for ensuring a positional relationship between the spindle 2 and the spindle motor 3 and for ensuring a stable rotation state of the disk 102. The positioning pin 209 is provided on the opposite side of the height reference pin 208 with the spindle motor 3 interposed therebetween, and is inserted into a positioning hole provided in the lower half 108b of the cartridge 108 to regulate the position of the disc cartridge 101. It has become.

In this state, the disc 102 housed in the cartridge 108 is mounted on the disc table 3a and is placed on the inner surface of the lower half 108b to drive the cartridge 1
It is lifted to a position where it does not hit 08 and is rotatable.

In this device, the cartridge 108
An optical block for writing and reading information signals to and from the disk 102 accommodated therein is provided. The optical block includes a semiconductor laser 210, a collimator lens 211 for irradiating the disk 102 with a laser beam from the semiconductor laser 210 as a predetermined minute spot, a beam shaping prism 212, a polarization beam splitter 213, and an objective lens 214. The sensor lens 215 for driving the objective lens 214 based on the signal from the reflected light reflected from the disk 102 to perform focusing and tracking, a beam splitter 216, a servo sensor 217, a signal sensor 218, a polarizing plate 219, and the like. To be done.

The signal sensor 218 detects the focusing signal and the tracking signal. These detected servo signals are fed back to a lens actuator (not shown), and the objective lens 214 is driven to perform autofocusing and autotracking.

Further, a temperature detecting sensor 220 for contacting the cartridge 108 to detect the temperature of the cartridge 108.
Are provided on the chassis 2 via springs 223. The temperature detecting sensor 220 is provided at a position close to the positioning pin 209, and comes into contact with the cartridge 108 when the disk cartridge 101 is loaded and lowered. That is, the cartridge 108 descends and is supported by the height reference pin 208 provided on the chassis 2, and contacts the lower half 108b of the cartridge 108 when the position is regulated by the positioning pin 209. Has become.

The output of the temperature detecting sensor 220 is
A central processing unit (CPU) 221 is connected, and the temperature detected by the temperature detection sensor 220 is sent to this CPU 221. In the CPU 221, the laser power of the laser emitted from the semiconductor laser 210 is controlled based on the detection result from the temperature detecting sensor 220.

In order to write an information signal to the disk 101 in the apparatus configured as described above, a bias magnetic field is applied to the disk 102 by the magnetic head 222 arranged so as to face the objective lens 214 with the disk 102 in between. At the same time, the laser beam is irradiated from the semiconductor laser 210 to form an image of the laser beam on the recording area.

The laser beam at this time is controlled by the CPU 221 based on the temperature of the disk cartridge 101 detected by the temperature detection sensor 220 in contact with the cartridge 108, that is, the substantially same temperature as the disk 102.
It is output as the optimum power for recording. Of course, according to the recording area of the disc 102, the disc 1
02, the temperature of the disk cartridge 102 at that time is instantly detected by the temperature detecting sensor 220.
Is detected as the optimum power for recording based on this temperature change.

Similarly, when reproducing and erasing, the recording surface of the disk 102 is always irradiated with the laser having the optimum laser power according to the temperature of the disk 102. Therefore, the recorded information will not be demagnetized, and the unerased part will not be generated, so that excellent information signal recording / reproduction can be performed.

Also in the case of an optical disc, the optimum laser power required for recording and reading is output according to the temperature change of the disc, so that the pit size does not fluctuate. , Stable recording / playback can be expected.

[0021]

The temperature detection device described above is capable of detecting the temperature of the disk cartridge. However, the above-described device uses a cartridge holder of a holding means configured to hold the disk cartridge, a cam, or the like. Is configured to be moved and operated. That is, the cartridge holder is arranged so as to hold the disk cartridge in a state parallel to the chassis. The loading mechanism first moves the disc cartridge held by the cartridge holder in a direction along the main surface of the disc, that is, in a direction parallel to the chassis. Then, when the disc comes to a position directly above the rotation drive mechanism, the disc cartridge is moved in a direction perpendicular to the chassis so as to approach the chassis.

As described above, the disk of the disk cartridge moved and operated in the direction of approaching the chassis is held by the rotation drive mechanism arranged on the chassis. The disk held by the rotary drive mechanism is rotated by the rotary drive mechanism, and the information signal is written and / or read by the pickup device over the entire surface of the signal recording surface.

The disk loading mechanism having such a cartridge holder needs to have a mechanism for moving the cartridge holder.
The device configuration is complicated, and it is difficult to easily manufacture and downsize the device.

Therefore, the applicant of the present invention first fixed the cartridge holder to the outer casing as a disk loading mechanism which simplifies the device structure, facilitates manufacturing, and enables downsizing of the device. It has been proposed that the rotary drive mechanism is arranged to move toward and away from the recording disk held in the cartridge holder.

That is, in the disk drive device having this disk loading mechanism, the disk cartridge is inserted and operated in the direction along the main surface portion and held in the cartridge holder. In this disc loading mechanism, a disc table that serves as a rotation driving mechanism and a spindle motor that rotates the disc table are moved in a direction of approaching the disc of the disc cartridge held in the cartridge holder. . The disc table is moved to a position where it abuts the center of the disc, and holds the disc. Then, this disc table is rotated together with the disc by a spindle motor.

However, in the disk drive device having such a loading mechanism, even if the above-mentioned temperature detecting sensor 20 is mounted on the chassis 2, the temperature cannot be detected, so that the temperature of the disk cartridge 101 cannot be detected. There was a problem.

The present invention has been made to solve the above-mentioned problems, and temperature detection of a disk cartridge is possible even in a disk drive device having a loading mechanism in which the disk cartridge does not move up and down. To provide the equipment.

[0028]

DISCLOSURE OF THE INVENTION The first temperature detecting device of the present invention has a disk 102 as shown in FIG.
On the chassis 2 for holding the disc cartridge 101 storing therein the disc cartridge 101 in a fixed position and the disc cartridge 101 inserted in the holding unit 28 so as to slidably contact the disc cartridge 101 up and down and rotationally drive the disc 102. The moving means 4 to 8 and the lifting motor 11 for moving the moving means 4 to 8 up and down are provided.
The temperature detecting means 300 for detecting the temperature of the disk cartridge 101 is disposed in the disk.

The second temperature detecting device of the present invention, as an example, is shown in FIGS. 1 and 7, holding means 28 for holding a disk cartridge containing a disk at a fixed position.
And the moving means 4 to 8 on the upper chassis 2 for slidably contacting the disk cartridge 101 inserted in the holding means 28 in the vertical direction and rotating the disk 102, and the moving means 4 to 8. And a temperature detecting means for detecting the temperature of the disk cartridge 101 are provided in the moving means 4 to 8.

[0030]

The temperature detecting device of the present invention moves the moving means such as the spindle casings 4 to 8 above the holding means such as the loading holder 28 that holds the disk cartridge 101 at the fixed position to move the disk cartridge 101.
The temperature sensor 300 for detecting the temperature when the inner disk 102 is rotationally driven is provided on the holding means and / or the moving means and / or the chassis, so that the spindle of the spindle motor moves to the disk cassette side. Even a drive device can be obtained that can detect temperature.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The temperature detecting device of the present invention will be described below in detail with reference to the drawings. In this example, a disk drive device having a disk loading mechanism according to the present invention is used. As shown in FIGS.
This is an example applied to temperature detection for recording and / or reproducing an information signal using the disk cartridge 101 housed in.

As shown in FIG. 1, the disc cartridge 101 includes a magneto-optical disc 102 and a cartridge 108.
It is configured to be rotatably stored in. The magneto-optical disk 102 has a disk substrate made of a transparent material such as synthetic resin, and a signal recording layer made of a magnetic material deposited on one main surface of the disk substrate, and has a disk shape. ing. A hub mounting hole is provided in the center of the disc 102. A disk hub 106 for holding the disk 102 on the disk table 4 of the disk drive device is provided in the hub mounting hole.
Is installed. The disc hub 106 is formed of a metal or the like into a substantially disc shape, is substantially concentric with the disc 102, and is attached to the disc 102 by means such as adhesion or welding. This disk hub 10
A center hole 107 is formed in the center of the signal recording layer 6 so as to be centered on the center of curvature of a recording track formed in a spiral shape on the signal recording layer.

The cartridge 108 is formed into a thin casing capable of accommodating the disk 102 by associating the pair of upper and lower halves 108a and 108b with each other. The upper main surface portion of the cartridge 108 is provided with an upper recording / reproducing opening 104 for exposing one main surface portion of the disk 102 to the outer side over the inner and outer circumferences. Further, the lower main surface portion of the cartridge 108 is provided with a lower recording / reproducing opening 110 for exposing the other main surface portion of the disk 102 to the outer side over the inner and outer circumferences. The lower recording / reproducing opening 110 is formed at a position opposite to the upper recording / reproducing opening 104 and has substantially the same size as the upper recording / reproducing opening 104.

A chucking opening for exposing the disk hub 106 to the outside is provided at the center of the lower main surface of the cartridge 108. And
As will be described later, a positioning contact recess 105 for contacting the cartridge positioning member 67 of the disk loading mechanism is formed around the chucking opening.

A shutter member 103 is attached to the cartridge 108. This shutter member 1
Reference numeral 03 denotes a U-shaped member made of synthetic resin, a metal plate, or the like, which holds the upper and lower main surface portions of the front edge side portion of the cartridge 108 by means such as injection molding and bending.

As shown in FIGS. 1 and 2, the disk drive for recording and / or reproducing has an outer housing 1 having a chassis 2 at the bottom, and the front side of the outer housing 1 is open. Has been done. The open front side of the outer casing 1 is closed by a front panel 24. The front panel 24 has a slit-shaped disc cartridge insertion opening 25 into which the disc cartridge 101 can be inserted. The disc cartridge insertion port 25 can be opened and closed by an insertion port lid body 26. The insertion port cover 26 is formed in an elongated rectangular plate shape corresponding to the disc cartridge insertion port 25, and both end portions of the rotary shaft 27 attached along the longitudinal direction are provided at inner portions of the disc cartridge insertion port 25. Is rotatably supported at. This insertion palate 2
6 rotates the rotation shaft 27 to open and close the disc cartridge insertion opening 25.

On the chassis 2 which is the bottom plate of the outer casing 1, there is provided a signal recording / reproducing section composed of a rotation driving means, an optical head means, a magnetic field generating means and the like.

That is, on the chassis 2, there is arranged a spindle motor 3 which constitutes a rotation driving means for rotating the disk 102 of the disk cartridge 101. The spindle motor 3 is attached to an elevating block 6 that constitutes loading means. The elevating block 6 is formed in a substantially annular shape, and the spindle motor 3 is fitted in the central hole 9 to support the spindle motor 3. The elevating block 6 has a plurality of shaft insertion holes 8, 8 and 8 provided with sliding bearings. The shaft insertion holes 8, 8 and
By inserting a plurality of motor guide shafts 7, 7, 7 planted in the chassis 2 into the chassis 8, the motor guide shafts 8 are supported movably in the contact and separation directions with respect to the chassis 2 along the motor guide shafts 7, 7, 7. ing. That is, the spindle motor 3 is movable in the contacting / separating direction with respect to the chassis 2. The spindle motor 3 is supported by a spindle shaft 5 integrated with a drive shaft which is substantially perpendicular to the chassis 2. The tip end side of the spindle shaft 5 faces the upper side of the chassis 2.

A disk table 4 is attached to the drive shaft of the spindle motor 3 so as to surround the periphery of the tip end side of the spindle shaft 5. The disc table 4 is mounted on the disc table 10 so that the disc hub 106 attached to the disc 102 is placed.
6 is formed on a disk having a diameter substantially the same as that of No. 6. An annular magnet is integrally attached to the disc table 5 between the spindle shaft 5 and the peripheral portion of the disc table 4. This magnet is for attracting the disk hub 107 of the disk 102 placed on the disk table 4.

Further, on the upper surface of the elevating block 6,
A substantially annular cartridge positioning member 67 is attached so as to be on the peripheral side of the disk table 4.
It is closer to the chassis 2 than the surface of the disk table 4 on which the disk hub 106 is mounted, and is parallel to the surface of the disk table 4 on which the disk hub 106 is mounted.

On the chassis 2, at the front side position of the spindle motor 3, the elevating block 6 together with the disk table 4 and the like is brought into contact with and separated from the chassis 2 (up and down).
A moving operation mechanism for moving operation, that is, lifting operation is provided. The moving operation mechanism is configured to include an elevating motor 11 that serves as a drive motor, and a cam plate 15 that is rotationally operated by the elevating motor 11. The lift motor 11 is supported by a support member attached to the chassis 2, and the drive shaft 12 is arranged in parallel with the chassis 2. The lift motor 11 has a drive shaft 12 rotatably projected from the casing toward the lift block 6. On the other end side of the drive shaft 12 of the lift motor 11, a cam plate 15 having an outer peripheral edge portion as a cam portion is attached. An engagement pin 6 a, which is erected on a side portion of the elevating block 6, is placed and engaged with the cam portion of the cam plate 15.

The elevating block 6 is elastically biased toward the chassis 2 by a tension spring 10 stretched between the elevating block 6 and the chassis 2.
The engagement pin 6a is pressed against the cam plate 15 so that the cam plate 15
Is abuttingly engaged with.

When the cam plate 15 is rotated by the lift motor 11, the lift block 6 is moved up and down by the cam plate 15. That is, the cam portion, which is the outer peripheral edge of the cam plate 15, is formed so as to form a part of a spiral shape, and the distance from the center changes depending on the rotation angle position. Therefore, as shown in FIG.
When a is a distance closer to the center of the cam plate 15 by the cam portion, it is positioned closer to the chassis 2, and the engagement pin 6a is farther from the center of the cam plate 15 by the cam portion as shown in FIG. When the distance is set, the position is set apart from the chassis 2.

The lifting motor 11 may be a so-called stepping motor. In this case, it is possible to accurately control the rotational angle position.

An optical pickup device, which is an optical head means composed of an optical block portion 18 and an objective lens driving device portion 17, is arranged on the chassis 2 at a position rearward of the spindle motor 3. This optical pickup device is configured to irradiate a light beam for writing and reading an information signal onto the disc 102 mounted and mounted on the disc table 4, as shown in FIG. . Reference numeral 19 is a magnetic head support arm.

A cartridge holder 28 is arranged in the outer casing 1 so as to be located above the chassis 2. The cartridge holder 28 has a pair of holder portions 29, 3 on both sides by means of bending a metal plate or the like.
0 is formed into a substantially flat plate shape. A pair of holder parts 29, 30
Is formed in a hook shape in section by bending both side portions of the cartridge holder 28 toward the chassis 2 side and further bending so that the vicinity of the side edge portions of these both side portions are parallel to the chassis 2. ing. Both sides of this cartridge holder 28 are supported by the inner wall of the outer casing 1,
It is arranged parallel to the chassis 2.

The cartridge holder 28 includes the holder portions 2
A disc cartridge 101 is formed between 9 and 30 so that the disc cartridge 101 can be inserted and operated from the front side. And
The disc cartridge 101 inserted between the holders 29 and 30 is supported and held on both sides by the holders 29 and 30. The cartridge holder 28 is arranged such that its front portion is located on the rear side of the disc cartridge insertion slot 25. That is, the disc cartridge 101 inserted from the disc cartridge insertion port 25 is inserted between the holder portions 29 and 30 of the cartridge holder 28.

Then, on the upper surface portion of the cartridge holder 28, the cartridge pressing spring portions 31, 32, 32 are provided at positions corresponding to the four corners of the cartridge 108 of the disk cartridge 101 inserted between the holder portions 29, 30.
33 and 34 are provided. These cartridge pressing spring portions 31, 32, 33, 34 have U-shaped notches formed in the upper surface of the cartridge holder 28, and the inner portions of the notches bulge toward the chassis 2 side. It is formed by being bent. These cartridge pressing spring portions 31, 32, 33, 34 are provided in the holder portions 2 respectively.
Disk cartridge 10 inserted between 9 and 30
1 is pressed against the chassis 2 side.

The above-mentioned pressing spring portions 31, 32, 33, 34
The temperature detecting means for detecting the temperature of the disk cartridge is configured by configuring one of them, for example, as shown in FIG. 5 or FIG.

In the case of FIG. 5, the cartridge pressing spring portion 31
The spring material that bulges toward the chassis 2 side is removed, and a cushioning material 301 such as sponge or maltbrane having the same shape as the cutout portion is attached to the lower surface of the substantially rectangular terminal plate 302 that covers the cutout portion. Then, the cushioning material 301 is covered with a protective sheet 305 made of plastic or stainless steel so that the cross section has a substantially half-moon shape, and a temperature detecting sensor 300 such as a thermistor is provided between the protective sheet 305 and the cushioning material 301. Arrange.

A small hole may be formed in the holding sheet 305 as necessary so that the upper surface of the disc cartridge 101 and the temperature detection sensor 300 are in good contact with each other.

An output lead for temperature detection from the temperature detection sensor 300 is supplied to a CPU or the like through a terminal 304 erected on a terminal board 302 to detect the temperature, and a laser for reading or writing a disk. Optimization control is performed.

In the above structure, the surface of the disk cartridge 101 inserted between the holder portions 29 and 30 of the cartridge holder 28 as indicated by arrow J is pressed by the cushioning material 301 to press the disk cartridge 101 toward the chassis 2. In addition, the surface temperature of the disc cartridge 101 can be detected.

FIG. 6 shows another structure of the temperature detecting device of this example. In FIG. 6, for example, one of the cartridge pressing spring portions 31, 32, 33, and 34 is transparent to the top portion of the half-moon shape of a leaf spring 306 such as phosphor bronze whose side surface is curved in a substantially half-moon shape. The surface of the disc cartridge 101 when the disc cartridge 101 is pressed in the arrow J direction between the holders 29 and 30 by making a hole 307, projecting the tip of the temperature detection sensor 300 from this through hole, and fixing it with an adhesive 309. It is configured to detect the temperature.

As shown in FIG. 1, a shutter opening rotation lever 37 for opening the shutter member 103 of the disc cartridge 101 is attached to the upper surface of the cartridge holder 28. The shutter opening rotary lever 37 is rotatably supported on the base end side by a substantially central portion on the front side of the cartridge holder 28 via a support shaft 38. The tip end side of the shutter opening rotation lever 37 is directed toward one side of the cartridge holder 28.

A shutter opening slider 43 is slidably attached to the shutter opening rotation lever 37. The shutter release slider 43 is formed in a substantially elongated plate shape and has a slide guide slit along the longitudinal direction. This shutter release slider 43
Is supported slidably in the arrangement direction of the guide pins 42 by inserting a pair of guide pins 42 set up on the shutter opening rotation lever 37 into the slide guide slits.

On the tip side of the shutter opening slider 43,
The shutter opening pin 41 is erected so as to hang down toward the chassis 2. The shutter opening pin 41 is inserted into the guide slit 36 provided on the upper surface of the cartridge holder 28, and the guide slit 3
It has entered between the holder parts 29 and 30 via 6.
In the guide slit 36, a portion extending from the front side portion of the cartridge holder 28 to the central portion of the cartridge holder 28 is an arc-shaped portion centered on the support shaft 38,
A portion extending from the central portion of the cartridge holder 28 to the rear side portion of the cartridge holder 28 is formed as a linear portion extending in the front-rear direction.

The shutter opening pin 41 moves within the arc-shaped portion of the guide slit 36 when the shutter opening rotation lever 37 rotates. Further, the shutter opening pin 41 is formed by sliding the shutter opening slider 43 with respect to the shutter opening rotating lever 37 when the shutter opening rotating lever 37 is rotated to form the central portion of the cartridge holder 28. , Move in the linear portion of the guide slit 36.

Then, the shutter opening rotation lever 37
Is urged to rotate by a torsion coil spring 39 whose coil portion is supported by the support shaft 38 in a direction in which the shutter opening pin 41 is on the front side. This torsion coil spring 39
One arm portion is locked to the locking portion of the shutter opening rotation lever 37, and the other arm portion is locked to the cartridge holder 2.
It is locked to the locking claw 40 provided on the No. 8. Further, the shutter release slider 43 has a tension coil spring 43a.
Thus, the shutter opening pin 41 is elastically biased in a direction to approach the support shaft 38. This tension coil spring 4
One end of the shutter 3a is locked to a locking portion on the base end side of the shutter opening slider 43, and the other end is locked to a locking claw provided on the shutter opening rotation lever 37.

In the initial state where the disc cartridge 101 is not inserted into the cartridge holder 28, the shutter opening pin 41 is positioned at the initial position where it abuts against the front end of the guide slit 36.

The CPU of the recording and / or reproducing disk drive device is configured to have a CPU (not shown). Based on various input signals, the CPU operates the spindle motor 3, the optical pickup device, the magnetic head device, and the like by operating manually from outside the recording and / or reproducing disk drive device. An operation signal input through the device, a signal output from the optical pickup device, a detection signal that detects the rotation speed and the rotation angle position of the spindle motor 3 and the lifting motor 11, and an insertion operation of the disc cartridge 101 into the cartridge holder 28. The temperature detection signal and the like are sent together with the signal that has detected the completion of. In this recording and / or reproducing disk drive device, a power optimization operation at the time of recording by a temperature detection signal, a tracking servo operation by driving a galvano mirror in an optical pickup device, and a focus by driving and controlling a lifting motor 11 The servo operation and the spindle servo operation for keeping the rotation speed of the spindle motor 3 at a predetermined speed are performed under the control of the CPU.

In order to mount and operate the disk cartridge 101 in the disk drive device according to the present embodiment configured as described above, first, the disk cartridge 101 is
An insertion operation is performed through the disc cartridge insertion port 25, and the disc cartridge is held between the holder portions 29 and 30. At this time, the disc cartridge 101 is inserted with the shutter member 103 on the front side, as indicated by the arrow J in FIGS. 1 and 2. Then, the lower end side portion of the shutter opening pin 41 is the front end surface portion of the cartridge 108 and is the shutter member 10.
The shutter opening pin fitting portion 113 of No. 3 is abutted. Then, the disc cartridge 101 is further attached to each holder portion 2
When the shutter opening pin 41 is inserted into the inner side between 9 and 30, the shutter opening pin 41 is pressed by the cartridge 108 and the shutter opening rotating lever 37 is rotated against the biasing force of the torsion coil spring 39. It moves rearward along the arcuate portion of the guide slit 36.

When the shutter opening pin 41 is moved to approximately the center of the cartridge holder 28,
The lower end portion presses the connecting plate portion of the shutter member 103 to close the shutter member 103, and each recording / reproducing opening 1
04 and 110 are opened.

When the disk cartridge 101 is further inserted toward the rear side, the holder parts 29, 3 of the disk cartridge 101 are moved by the cartridge pressing spring parts 31, 32, 33, 34.
It is moved to the rear side while being pressed and supported by the chassis 2 side between 0. In this state, the temperature detection sensor 30 arranged on the cushioning material 301 that constitutes the cartridge pressing spring portion
With 0, the temperature of the disk cartridge can be measured.

Next, in the disc cartridge 101, the disc 102 is inserted between the objective lens and the magnetic head device. At this time, since the gap between the objective lens and the magnetic head device is made wider than the thickness of the disc 102, the disc 102 does not come into contact with the objective lens or the magnetic head device.

At this time, the shutter opening pin 41 is pressed by the cartridge 108, so that the shutter opening slider 43 slides with respect to the shutter opening rotation lever 37 against the biasing force of the tension coil spring 43a. To be done. The shutter opening pin 41 is located inside the linear portion of the guide slit 36 on the rear side, that is, the support shaft 38.
It is moved in the direction of further separation.

At this time, the elevating block 6 is moved and biased toward the chassis 2 by the tension coil spring 10 and is positioned at the initial position.

When the disc cartridge 101 is inserted to a predetermined insertion completion position, the disc table 4 and the disc hub 106 are substantially coaxial and face each other. At this time, the fact that the disc cartridge 101 has been mounted to the insertion completion position is detected by a detection device (not shown), and a detection signal indicating this detection is sent to the CPU, and at the same time, the temperature detection sensor 300 detects the temperature of the disc cartridge 101. The measurement is taken.

The detection device has, for example, a so-called photocoupler, and is configured to detect the completion of the insertion operation of the disk cartridge 101 by optical means or other various means. ing.

The control device to which the detection signal is sent from the detection device drives the lifting motor 11. This lifting motor 11
The cam plate 15 is rotationally operated by the driving of, and the elevating block 6 is operated to be moved to an upper side separated from the chassis 2. That is, when the disc cartridge 101 is inserted into the cartridge holder 28 to a predetermined position, the spindle motor 3 moves from the non-rotational drive position separated from the disc 102 to the disc 10 from the non-rotational drive position.
The elevator motor 11 moves and moves it to the rotational drive position on the second side. When the elevating block 6 is moved up and down to the rotational drive position, the disc hub 106 of the disc 102 is placed on the disc table 4, and the cartridge 108 is moved to the cartridge positioning member 6.
It is placed on 7. At this time, the tip end side of the spindle shaft 5 is fitted in the center hole 107. Further, at this time, in the cartridge 108, the positioning contact concave portion which is the peripheral portion of the chucking opening 109 is brought into contact with the cartridge positioning member 67.

The cartridge 108 thus placed on the cartridge positioning member 67 resists the biasing force of the cartridge pressing spring portions 31, 32, 33, 34, and the space between the holder portions 29, 30. Are moved away from the chassis 2. In addition, the disk 102 is
In this way, the disc hub 106 is placed on the disc table 4.
Is mounted on the cartridge 108, the cartridge 108 is separated from the inner wall portion of the cartridge 108. In the disk 102, since the distance between the upper surface of the disk table 4 and the cartridge positioning member 67 is always constant, in the cartridge 108,
The cartridge 108 is held at a fixed position. Further, the disc hub 106 is the disc table 4
It is held in pressure contact with the disk table 4 by the attraction force of the magnet provided above.

In this state, when the spindle motor 3 is driven, the disc 102 moves to the disc table 4
At the same time, it is rotated. The disk 102 is rotated by the spindle motor 3 at a predetermined angular velocity. Further, the optical pickup device including the optical block unit 18 and the objective lens driving device unit 17, and the support arm 19 having the magnetic head are connected to the spindle motor 3
An information signal is written by applying a magnetic field and irradiating a light beam to the disk 102 that is rotated by, and reading an already written information signal by irradiating the light beam. . At this time, the beam diameter and the like are changed depending on the temperature condition of the disk cartridge.

In this recording and / or reproducing disk drive device, the elevating block 6 includes the chassis 2
When it is lowered to the side, the disk cartridge 101
Is discharged to the front side of the cartridge holder 28 by the urging force of the tension coil spring 43a. Further, when the disc cartridge 101 is ejected to the front side of the central portion of the cartridge holder 28, the shutter opening rotation lever 37 is returned to the initial position by the torsion coil spring 39, and the shutter member 103 is opened at each opening. 10
4, 110 is closed.

In the configuration of the above case, the temperature sensor 300 for temperature detection is provided in the cartridge pressing spring portions 31, 32, 33, 34 of the cartridge holder 28, etc., but it is moved as shown in FIG. A through hole 310 is bored from the upper surface at a predetermined position of the cartridge positioning member 67 of the disk table 4 including the spindle motor 3 constituting the means, and a temperature detecting sensor is mounted in the through hole 310,
The temperature of the disc cartridge may be detected when the elevating block 6 is raised toward the disc cartridge 101 and positioned.

In this case, since the temperature detecting sensor 300 of the cartridge positioning member 67 contacts the peripheral portion of the chucking opening 109 of the disc cartridge 101, the temperature inside the disc cartridge 101 can be measured.

Still another embodiment of the temperature detecting device of the present invention will be described with reference to FIGS. FIG. 8 is a plan view of this example,
FIG. 9 shows a side view.

In the case of this example, the disk cartridge 101 is arranged below the cartridge holder 28 on the chassis 2 at the most distal end when the insertion is completed.

In FIG. 8 and FIG. 9, 400 is a leaf spring made of phosphor bronze or the like and formed in an approximately L-shape, and the fixing portion 401 is fixed to the chassis 2 by an appropriate method.
The plane of the inclined portion 402 of 0 has a substantially V shape, and the tip portion 403 of the inclined portion 402 is formed substantially parallel to the chassis 2, and the tip portion 403 has a cushioning material 404 such as sponge.
A temperature detection sensor 300 such as a thermistor is attached via.

The lever 405 is formed into a substantially hook shape, and is composed of a fixed portion 406 and an L-shaped portion 407.
Is pivotally attached to the chassis 2 via a pivot 408.

A pin 409 is planted on the flat portion of the L-shaped portion 407 of the lever 405. The position where the pin 409 is set up has an angle α with respect to the rotational center of the pivot of the lever 405, as shown in FIG. That is clear.

The lower end of the pin 409 erected on the lever 405 is formed so as to abut on the upper surface of the inclined portion 402 of the lever 405, and the pivot 408 of the lever 405 has a spring 4 attached thereto.
10 is wound, and one end of the spring 410 is the chassis 2
Is fixed to one end of the lever 405 and the other end is locked to one end of the lever 405.
A biasing force is added to hold it above zero.

With the above-mentioned structure, as shown in FIGS. 8 and 9, when the disc cartridge 101 is inserted between the disc cartridge insertion opening 25 of the panel 24 and the holder portions 29 and 30 of the cartridge holder 28 and loaded in the direction of arrow J, the disc cartridge 101 The tip of the pin 409 is erected on the lever 405.
Abut. When the disk cartridge 101 is further pressed, the lever 405 is rotated clockwise as indicated by arrow K. The lower end of the pin 409 is disengaged from the leaf spring 400, and when the disc cartridge 101 is loaded at a fixed position, the temperature detection sensor 300 of the leaf spring 400 moves upward and can contact the bottom surface of the disc cartridge 101, so that the inserted disc is inserted. Cartridge 1
A temperature of 01 can be detected.

Since the present invention is constructed as described above, the temperature of the disk cartridge can be detected even in the disk drive device having the loading mechanism in which the disk cartridge does not move up and down. Further, it is possible to obtain the temperature detecting device in which the cushioning material protecting the temperature detecting sensor can also serve as the spring.

[0084]

According to the temperature detecting device of the present invention, the temperature of the disc cartridge can be detected even in the disc driving device having the loading mechanism in which the disc cartridge does not move up and down.

[Brief description of drawings]

FIG. 1 is a perspective view of a disk drive device assembly in which a temperature detection device of the present invention is used.

FIG. 2 is a diagram illustrating a loading state of the disc cartridge of the present invention.

FIG. 3 is an explanatory diagram of a cam operation for raising the lifting block according to the present invention.

FIG. 4 is an explanatory diagram of a cam operation for lowering the lifting block of the present invention.

FIG. 5 is a side sectional view of an essential part showing an embodiment of the temperature detecting device of the present invention.

FIG. 6 is a side sectional view of a main part showing another embodiment of the temperature detecting device of the present invention.

FIG. 7 is another embodiment explanatory view of the method for mounting the temperature detecting sensor of the temperature detecting device of the present invention.

FIG. 8 is a plan view showing another embodiment of the temperature detecting device of the present invention.

FIG. 9 is a side view showing another embodiment of the temperature detecting device of the present invention.

FIG. 10 is a configuration diagram of a conventional temperature detection device.

[Explanation of symbols]

 1 Outer Housing 24 Front Panel 25 Cartridge Insertion Port 28 Cartridge Holder 101 Disc Cartridge 102 Disc 300 Temperature Detection Sensor 301 Cushioning Material

Claims (4)

[Claims] 1. A holding means for holding a disk cartridge accommodating a disk at a fixed position and a disk cartridge inserted in the holding means so as to slidably contact the disk cartridge up and down and rotate the disk. It is provided with a moving means arranged on the chassis and an elevating motor for vertically sliding the moving means, and the holding means is provided with temperature detecting means for detecting the temperature of the disk cartridge. Temperature detection device. 2. A holding means for holding a disk cartridge accommodating a disk at a fixed position and a disk cartridge inserted in the holding means so as to slidably contact the disk cartridge up and down and rotate the disk. A temperature detecting device comprising: moving means and a drive motor for sliding the moving means up and down, wherein the moving means is provided with temperature detecting means for detecting the temperature of the disk cartridge. 3. The temperature detecting means is provided in the shell of the holding means so as to detect the temperature of the disk cartridge.
The temperature detection device described. 4. A temperature detecting means is provided on the holding means or the chassis so as to move in response to the loading of the disk cartridge, and a temperature detecting means for contacting the disk cartridge is provided. 1. The temperature detection device according to 1.