JPH097361A - Disk player apparatus - Google Patents

Abstract

PURPOSE: To make it possible to open and close cap body by a motor without enlarging the constitution of an apparatus. CONSTITUTION: A disk table 6 is provided at the center of a disk mounting part of a main body part 1. A pickup device 7 is sent and operated no the slant rear side from the vicinity of the disk table 6. A driving mechanism 34 is provided at the rear side of the disk mounting part and at the opposite side of the sending and operating side of the pickup device 7. The driving mechanism 34 opens and closes a cap body 14, whose rear side is rotatably supported with respect to the main body part 1 by the driving force of a motor 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player device for recording or reproducing information signals using a recording disc such as an optical disc or a magneto-optical disc as a recording medium.

[0002]

2. Description of the Related Art Conventionally, there has been proposed a disc player device for recording or reproducing an information signal by using a recording disc such as an optical disc or a magneto-optical disc as a recording medium.

As such a disc player device, there is a disc player device which is constructed in a small size so as to be portable or mounted on a vehicle, or to be used for both portable and vehicle mounting.

Such a disc player device has a main body formed in the shape of a casing whose upper surface is substantially rectangular. The length of one side of the rectangle formed by the upper surface of the main body is approximately equal to the diameter of the recording disk, for example, 120 mm.

The upper surface of the main body serves as a disc mounting portion on which the recording disc is mounted.
That is, a disk table on which a disk recording disk is mounted and which holds the recording disk is arranged at approximately the center of the disk mounting portion. The disc table is rotated by the spindle motor housed in the main body together with the recording disc held therein.

An optical pickup device for writing or reading an information signal to or from the recording disk held on the disk table is movably arranged in the disk mounting portion. .

That is, this optical pickup device is
An objective lens, which is movably supported in the main body portion and emits a light beam to the recording disc, faces the disc mounting portion.

When the optical pickup device is moved in the disc mounting portion, the optical pickup device faces the inner and outer circumferences of the recording disc which is held and rotated by the disc table, and signal recording is performed on the recording disc. Information signals can be written or read over the entire surface.

The disc mounting portion can be opened and closed by a lid body rotatably supported by the main body portion.

The lid is formed in a substantially flat plate shape and size corresponding to the upper surface of the main body. The lid body has a rear end portion rotatably supported by a rear portion of the main body portion via a support shaft, and is disposed above the main body portion.

The lid body is urged by a biasing member such as a torsion coil spring arranged in the main body portion so as to be spaced upward from the main body portion in a direction to open the disc mounting portion. ing. The lid body is rotated at the body portion side to close the disc mounting portion by a lock member arranged in the body portion so as to maintain the lid closed state. It is locked against the biasing force of the biasing member.

That is, when the locking by the lock member is released, the lid body is rotated by the urging force of the urging member to the open position for opening the disc mounting portion.

By opening the disc mounting portion by the lid, the recording disc can be attached to and detached from the disc mounting portion.

[0014]

By the way, in the disc player device as described above, the lid body displaces the biasing member to the maximum extent when it is in the closed lid position. Most strongly receives the biasing force of the biasing member. When the lid is in the open position, the lid does not displace the biasing member so much and receives only a small biasing force of the biasing member.

In this disc player device, when the lid member is in the closed position and is locked by the lock member, the lid member is released from the biasing force. The lid is opened at a speed according to the biasing force of the member.

Therefore, in this disc player device, the lid is rotated toward the opening side at the fastest speed in the vicinity of the closed position, and the rotation speed is reduced in the vicinity of the opened position. Will be done.

As described above, if the rotation speed of the lid body is high immediately after the lid opening operation for opening the lid body, the installation state of the main body portion becomes unstable when the lid opening operation is performed. There is a risk of becoming. That is, during the lid opening operation,
The main body may move from the installation position or may fall over due to the reaction of the rotation of the lid.

Further, in this disc player device, when the lid is closed, the closer the lid is to the closed position, the stronger the urging force of the urging member is. The lid closing operation for closing the lid cannot be performed smoothly.

Here, in order to prevent the installation state of the main body portion from becoming unstable as described above, the opening of the lid body performed by the urging force of the urging member is performed by rotating the lid body. A configuration is conceivable in which only the middle of the moving range is performed.

That is, when the lid member which is in the closed position and is locked by the lock member is released from the lock member by the lock member, the lid member is at a predetermined angle from the closed position. When the lid is rotated toward the open position, the urging force of the urging member is no longer applied and the urging member is stopped.

However, if the lid body that is opened by the urging force of the urging member is stopped midway, the lid body extends from the stop position to the open position. It is necessary to open the lid manually, and the lid opening operation cannot be performed smoothly.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and a lid body that is rotatably supported by the main body portion and that opens and closes the disc mounting portion is installed in the main body portion. It is an object of the present invention to provide a disc player device that can be smoothly opened and closed without destabilization.

[0023]

In order to solve the above problems and achieve the above objects, a disc player device according to the present invention comprises a main body portion having a disc mounting portion on an upper surface portion,
A lid body that is rotatably supported at a rear side portion of the disc mounting portion by the main body portion and is disposed on the main body portion to open and close the disc mounting portion; A disk table which is arranged in the central portion and holds a recording disk and is rotated by a spindle motor, and an obliquely extending position in the disk mounting portion from a position near the disk table to a rear position on one side of the disk mounting portion. A pickup device for writing or reading an information signal to or from a recording disc held on the disc table, the lid device being provided at a rear position on the other side of the disc mounting portion. And a drive mechanism for opening and closing.

Further, according to the present invention, in the above-mentioned disc player device, the drive mechanism includes a motor and a gear train for transmitting the driving force of the motor to the lid, and the gear train includes: It is configured to have two worm gears.

[0025]

In the disc player device according to the present invention, the main body portion having the disc mounting portion on the upper surface portion and the rear portion rotatably supported by the main body portion at the rear side position of the disc mounting portion. A lid body disposed on the main body portion for opening and closing the disc mounting portion; a disc table disposed substantially in the center of the disc mounting portion for holding a recording disc and being rotated by a spindle motor; Writing of an information signal to a recording disk held in the disk table, which is disposed so as to be capable of being fed in an oblique direction from a position near the disk table in the disk mounting section to a rear position on one side of the disk mounting section, or A pickup device for reading out and a drive mechanism arranged at the rear position on the other side of the disc mounting portion for opening and closing the lid are provided. Because, without increasing in size than the said disk mounting portion corresponding to the recording disk,
The drive mechanism allows the lid body to be smoothly opened and closed.

Further, in the above-mentioned disc player device, it is assumed that the drive mechanism has a motor and a gear train for transmitting the driving force of the motor to the lid, and the gear train has two worm gears. If it is configured to have, the lid can be opened / closed by the drive mechanism as well as manually.

[0027]

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

As shown in FIGS. 1 to 3, the disc player apparatus according to the present invention has a main body 1 having a thin outer casing having substantially rectangular upper and lower main surface portions. ing. A disc mounting portion 2 is provided on the upper surface of the main body 1.

As shown in FIGS. 1 and 2, the disc mounting portion 2 is provided over substantially the entire upper surface of the outer casing of the main body 1. The disc mounting portion 2 is configured as a flat portion having a size substantially corresponding to the recording disc 101 so that the recording disc 101 used as a recording medium in the disc player device can be mounted. That is, the outer casing of the main body 1 is
The recording disk 101 is formed to have a main surface portion having a size substantially corresponding to the size of the recording disk 101.

The recording disk 101 is a so-called optical disk or magneto-optical disk, and is constructed by forming a signal recording layer on a disk-shaped disk substrate made of a synthetic resin material. The diameter of the recording disk 101 is a predetermined diameter such as 120 mm, 80 mm, or 64 mm.

A chucking hole 102 for positioning and chucking the recording disk 101 is formed at the center of the recording disk 101. A main surface portion of the recording disk 101 is a recording / reproducing surface 103 for writing or reading information signals.

At approximately the center of the disc mounting portion 2,
A disk table 6 is arranged. The disc table 6 is formed in a substantially disc shape having a size corresponding to a non-signal recording area which is a peripheral portion of the chucking hole 102 of the recording disc 101. The disc table 6 is coaxially attached to a drive shaft of a spindle motor 21 arranged in the outer casing, and is horizontally supported in the disc mounting portion 2. The disk table 6 is rotated by the spindle motor 21.

The spindle motor 21 is arranged on a so-called floating supported disk drive frame 5 in the outer casing of the main body 1 via a cushioning material. The disk drive frame 5 faces the inside of the disk mounting portion 2 through an upper surface of the outer housing, that is, an opening 10 formed in the disk mounting portion 2.

On the upper surface of the disk table 6, there is provided a positioning projection 9 having a truncated cone shape which is fitted in the chucking hole 102 of the recording disk 101. A plurality of chucking balls 20 are provided on the outer peripheral portion of the positioning protrusion 9 at equal angular intervals. Each of these chucking balls 20 is elastically biased toward the outer peripheral side of the positioning protrusion 9.

When the positioning protrusion 9 is fitted into the chucking hole 102, each chucking ball 20 is inserted.
Presses and supports the inner peripheral surface of the chucking hole 102. The positioning projections 9 and the chucking balls 20 position and hold the recording disk 101 so as to be coaxial with the drive shaft of the spindle motor 21. The recording disk 101 is also positioned in the height direction by bringing the peripheral portion of the chucking hole 102 into contact with the upper surface of the disk table 6.

That is, the disc table 6 positions and holds the recording disc 101, and is rotated together with the recording disc 101 by the spindle motor 21.

Then, in the disc mounting portion 2, the recording disc 101 held on the disc table 6 is provided.
An optical pickup device 7 for writing or reading an information signal to or from is provided.

The optical pickup device 7 has an optical block section, and a semiconductor laser which serves as a light source, an optical device such as a collimator lens or a beam splitter for guiding a luminous flux emitted from the semiconductor laser, and the luminous flux are contained in the optical block section. An objective lens 8 for condensing light on the signal recording layer of the recording disk 101, a photodetector for detecting a light beam reflected by the signal recording layer, and the like are built in.

The optical pickup device 7 is movably supported in the outer housing of the main body 1 by the disc drive frame 5 so that the objective lens 8 faces the disc mounting portion 2. . As shown in FIG. 3, the optical pickup device 7 is arranged in the disc mounting portion 2 in an oblique direction from a position near the disc table 6 to a rear position on one side of the disc mounting portion 2. It is designed to be feedable.

It should be noted that in order to facilitate the operation of taking the recording disk 101 in and out of the disk mounting section 2 and the operation of mounting and dismounting it in the disk table 6 on the upper surface of the outer casing, that is, in the disk mounting section 2. , A plurality of recesses 3, 3, 4, 4 are formed.

A lid 14 is rotatably supported and disposed on the upper surface side of the outer casing of the main body 1. The lid 14 is formed in a substantially flat plate shape having a size corresponding to the disc mounting portion 2. The lid body 14 is located at the rear side position of the disc mounting portion 2 by the outer casing of the main body portion 1, and the rear side portion has a pair of left and right support shafts 19 and 15 positioned on one side and the other side. It is rotatably supported via. The support shafts 19 and 15 are coaxial with each other, and the direction along the rear edge of the outer casing is the axial direction.

The lid 14 opens and closes the disc mounting portion 2 by being rotated with respect to the main body 1 as shown by an arrow A in FIGS. 1 and 2.
The lid 14 is rotatable from a closed position where the disk mounting portion 2 is closed to an open position where the disk mounting portion 2 is opened. The rotatable range of the lid 14 is about 80 ° to 90 °.

At the closed position, the lid 14 is
A lock member 36 provided on the outer casing of the main body 1 is engaged.

That is, as shown in FIG. 2, the lock member 36 is slidably disposed in a portion of the outer housing which is located in front of the disk mounting portion 2. The front end portion of the lock member 36 is arranged so as to be able to move forward and backward with respect to the inside of the disc mounting portion 2. The lock member 36 is elastically attached in the direction in which the tip end side is inserted into the disc mounting portion 2 by the compression coil spring 35 disposed between the lock member 36 and the inner wall portion of the outer casing. It is biased and positioned at the initial position. Further, a locked hole 37 into which the tip end side of the lock member 36 is fitted and engaged is provided at the front end edge portion of the lid body 14.

At the closed position, the lid 14 is locked at the closed position by fitting and engaging the tip end side of the lock member 36 with the locked hole 37. Then, the lid 14 is provided with the lock member 36.
Is operated to slide against the biasing force of the compression coil spring 35, and the tip end side of the lock member 36 is pulled out through the locked hole 37, so that the lock member 36 can be rotated from the closed position to the open position. Becomes

A drive mechanism for opening and closing the lid 14 is provided in the outer casing of the main body 1 at the rear of the other side of the disk mounting portion 2.

As shown in FIG. 3 to FIG. 7, this drive mechanism has a frame 34, on which a lid drive motor 22 and a gear train composed of a plurality of transmission gears are arranged. There is.

That is, a drive gear 24 is attached to the drive shaft 23 of the lid drive motor 22. The drive gear 24 has a gear support shaft 27 with respect to the frame 34.
It meshes with a first transmission gear 25 rotatably supported via. A second transmission gear 26 having a diameter smaller than that of the first transmission gear 25 is integrally and coaxially attached to the first transmission gear 25. This second transmission gear 26
Engages with a third transmission gear 28 rotatably supported on the frame 34 via a gear support shaft 29.

A double-start worm gear 30 is integrally and coaxially attached to the third transmission gear 28. This 2
The strip worm gear 30 is a worm gear having two spiral strips.

A worm wheel 31 rotatably supported on the frame 34 via a gear support shaft 32 meshes with the double-worm gear 30. A fourth transmission gear 33 is integrally and coaxially attached to the worm wheel 31.

The fourth transmission gear 33 is provided in the lid 14
Is engaged with a driven gear 17 formed integrally with The driven gear 17 is formed on the peripheral surface of a fan-shaped projecting piece 16 centered on the support shaft 15 located on the other side of the outer casing. That is, this driven gear 17 is
Is formed on a cylindrical surface whose axis is the axis of the.

Therefore, when the cover drive motor 22 drives the cover 14, the drive force is transmitted through the gear train, and the cover drive motor 22 is rotated about the support shafts 19 and 15. It is rotated in a direction corresponding to the driving direction.

The main body 1 is provided with the lid 14
A first sensor (not shown) that detects that the lid is in the closed position and a second sensor (not shown) that detects that the lid 14 is in the opened position. The detection output of each of these sensors is sent to the control circuit arranged in the main body 1.

In the front part of the outer casing of the main body 1,
A lid opening / closing button (O-C button) 12 is provided. By pressing the lid opening / closing button 12, the locking member 36 can be slid to release the locking of the locking member 36 with respect to the lid 14, and the lid opening / closing button 12 It is possible to instruct driving of the lid drive motor 22.

Further, in the front side portion of the outer casing of the main body portion 1, various operation modes such as reproduction operation, stop of operation and track jump are selected and executed for the control circuit. A plurality of buttons 13 for instructing are provided.

Further, a display section 11 is provided on the front side portion of the outer casing of the main body section 1. This display unit 11
Has a display device such as a liquid crystal display (LCD), and displays characters and symbols based on various information signals output from the upper control circuit.

In the disc player device according to the present invention constructed as described above, the lid drive motor 22 is
When the lid opening / closing button 12 is operated in a state where the locking of the lid 14 by the lock member 36 is released, the lid 14 is driven.

In this case, the drive motor 22
Is operated to open the lid 14 when the lid opening / closing button 12 is operated while it is detected that the lid 14 is in the closed position, and the lid 14 is opened. When the lid opening / closing button 12 is operated while it is detected that the lid is in the open position, the lid 14 is driven in the direction to close the lid.

The drive motor 22 is connected to the lid 1
When the lid opening / closing button 12 is operated while the position 4 is between the closed lid position and the open lid position, driving is started in either direction, and the lid opening / closing button 12 is activated. Every time is operated, the driving direction is reversed.

In the state where the locking of the lock member 36 at the closed position with respect to the lid 14 is not released, even if the lid opening / closing button 12 is operated, the control circuit still operates. The operation of the lid opening / closing button 12 is invalidated, and the lid driving motor 22 is not driven.

Then, when the lid body 14 is in the closed position, the lid body drive motor 22 drives the lid body 14 in the direction for closing the lid body for another 4 to 5 seconds. Stop. Further, when the lid body 14 is in the open position, the lid body drive motor 22 drives the lid body 14 for an additional 4 to 5 seconds in the direction for opening the lid body 14 and then stops. Therefore, the lid drive motor 22
Securely opens and closes the lid 14.

Further, when the lid drive motor 22 is stopped during driving by the rotation of the lid 14 being stopped by a finger or the like, the drive direction is reversed 1 to 2 seconds after the stop.

In this disc player device, when the cover 14 is not in the closed position, that is, the cover 14 is in the open position, or the cover 14 is in the open position and the open position. When the button 13 for instructing the start of the reproduction operation is operated when the lid 13 is located between the lid position and the closed position, the control circuit causes the lid drive motor 22 to operate.
Is driven to close the lid 14, and then the reproducing operation is started.

The disc player device is driven by being supplied with power from the dry battery housed in the main body 1. Then, in this disc player device,
When the power supply voltage is within a predetermined voltage range of, for example, 1.8 V to 3.0 V, the control circuit steps down the voltage to the lower limit of this voltage range (for example, 1.8 V), and the lid drive motor. 22 is applied. Therefore, even if the power supply voltage fluctuates, the lid drive motor 22 is driven at a constant speed regardless of this fluctuation.

In this disc player device, the power supply voltage of the control circuit is 1.8 V, for example.
When the voltage is below the lower limit of the predetermined voltage range such as to 3.0 V, the display unit 11 displays, for example, “BATT-
A message indicating that the power supply voltage has dropped is displayed as in "LOW", and the lid drive motor 22 and the spindle motor 2 are displayed.
Stop the functions such as 1.

In this disc player device, since the gear train forming the drive mechanism has the double worm gear 30, the lid 14 can be opened and closed by the driving force of the lid drive motor 22.
It is also possible to directly open and close the lid body 14.

When the two-row worm gear 30 is replaced with the one-thread worm gear, the lid 14 cannot be opened and closed manually. Also, the above-mentioned two-row worm gear 30
When the three-row worm gear is used instead of
Will open and close due to its own weight and vibration.

In this disc player device, the lid 14 is not pushed up to the open position by a biasing member such as a spring when it is in the closed position. No gap is formed between the main body 1 and the main body 1.

[0069]

As described above, in the disc player device according to the present invention, the main body portion having the disc mounting portion on the upper surface portion and the rear portion by the main body portion at the rear side position of the disc mounting portion. A lid body that is rotatably supported and is disposed on the main body portion to open and close the disc mounting portion, and a recording disc that is disposed substantially at the center of the disc mounting portion and is rotated by a spindle motor. And a record held in the disc table so that the disc table can be fed and operated in an oblique direction from a position near the disc table in the disc mounting portion to a rear position on one side of the disc mounting portion. A pickup device for writing or reading an information signal to and from the disc, and an opening / closing operation of the lid which is arranged at the rear position on the other side of the disc mounting portion. And a dynamic mechanism.

Therefore, in this disc player device, the lid can be smoothly opened and closed by the drive mechanism without enlarging the disc mounting portion to a size corresponding to the recording disc.

That is, according to the present invention, the lid body which is rotatably supported by the main body portion and opens and closes the disc mounting portion can be smoothly opened and closed without destabilizing the installation state of the main body portion. It is possible to provide a disc player device having the above-mentioned structure.

Further, in the disc player device, the drive mechanism is configured to have a motor and a gear train for transmitting the driving force of the motor to the lid, and the gear train has two worm gears. If it is configured to have, the lid can be opened / closed by the drive mechanism as well as manually.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a disc player device according to the present invention.

FIG. 2 is a side view schematically showing the configuration of the disc player device.

FIG. 3 is a plan view schematically showing the configuration of the disc player device.

FIG. 4 is a perspective view showing a configuration of a drive mechanism of the disc player device.

FIG. 5 is a plan view showing the structure of the drive mechanism in a see-through manner.

FIG. 6 is a front view showing the structure of the drive mechanism in a see-through manner.

FIG. 7 is a side view showing the configuration of the drive mechanism in a see-through manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body part 2 Disc mounting part 6 Disc table 7 Optical pick-up device 14 Lids 15,19 Support shaft 17 Driven gear 21 Spindle motor 22 Lid drive motor 24 Drive gear 25 First transmission gear 26 Second transmission gear 28 Second 3 transmission gear 30 2-way worm gear 31 worm wheel 33 4th transmission gear 101 recording disk

Claims (2)

[Claims] 1. A body portion having a disc mounting portion on an upper surface thereof, and a rear portion rotatably supported by the body portion at a rear side position of the disc mounting portion and disposed on the body portion. A lid for opening and closing the disc mounting portion, a disc table which is disposed substantially in the center of the disc mounting portion and which is rotated by a spindle motor while holding a recording disc, and the disc table in the disc mounting portion. An information signal is written to or read from a recording disc held on the disc table, which is arranged so as to be capable of being fed in an oblique direction from a position near the disc table to a rear position on one side of the disc mounting portion. A disk drive including a pickup device for performing the operation and a drive mechanism that is disposed at a rear position on the other side of the disc mounting portion and that opens and closes the lid. Kupureya apparatus. 2. The drive mechanism includes a motor and a gear train that transmits the driving force of the motor to the lid, and the gear train includes two worm gears. The disc player device according to claim 1, wherein the disc player device is configured as follows.