JPH06124521A - Chucking device - Google Patents

Abstract

PURPOSE:To facilitate the assembly of the chucking device and to enable the removal of the device from a cap body. CONSTITUTION:A chucking plate holder 53 is provided between a chucking plate 52 and a chucking plate 54. A magnet 55 is provided on the chucking plate 54. A chucking device mounting part 58 disposed with detaining parts 58C, 58D on a straight line is provided within the cap body 5. A chucking plate holder 53 is engaged with these detaining parts 58C, 58D, by which the chucking plate holder 53 is fixed to the cap body 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chucking device, and more particularly to the structure of a chucking device.

[0002]

2. Description of the Related Art A disk reproducing device such as a portable CD player is provided with, for example, a chucking device fixed to a holder of a lid. The chucking device is
The compact disc is fixed at an appropriate position with respect to the optical pickup. That is, when the compact disc is mounted on the CD player and the lid is closed,
By the magnet arranged in the chucking device and the metal plate arranged on the rotating shaft of the spindle motor on the main body side,
Compact discs are sandwiched. As a result, the compact disc is fixed to the rotary shaft of the spindle motor,
Stable driving is performed.

A conventional chucking device is rotated and fixed to a chucking device holder provided on a lid.
That is, the concave portion provided in the chucking device is fitted into the locking claw provided in the holder of the lid body.

[0004]

The chucking device is
Since it is rotated and fitted to the chucking device holder of the lid, there is a problem that assembly efficiency is poor.

Further, since the chucking device is fixed to the holder of the lid, it cannot be removed. By the way, when inspecting a portable CD player, it may be necessary to remove the lid and drive the compact disc. At this time, it is necessary to remove the chucking device from the lid and sandwich the compact disc between the chucking device and the metal plate of the rotating shaft of the motor on the main body side. However, since the chucking device cannot be removed, there arises a problem that it is inconvenient during inspection or the like.

Therefore, an object of the present invention is to provide a chucking device which is easy to assemble and is removable.

[0007]

According to the present invention, there is provided a holding portion between a first chuck plate and a second chuck plate, and a chucking portion including a magnet embedded in the second chuck plate. And a mounting portion having a locking portion linearly provided in the lid, the holding portion is engaged with the locking portion, and the chucking portion is fixed in the lid. is there.

[0008]

The chuck plate in which the magnet is embedded is fixed by a plasticized holder, and the chucking device is held by the plasticized locking claws and metal screws of the holder.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a portable compact disc player will be described below with reference to the drawings. 3 and 4 are diagrams of a portable compact disc player to which the present invention is applied. In the figure, 1 indicates a portable compact disc player as a whole. Reference numeral 2 denotes a cabinet, which includes an upper cabinet 3 and a lower cabinet 4.
The lid 5 is attached to the upper cabinet 3 so as to be vertically rotatable about a rear end of the lid 5 as a fulcrum. The lid 5 is provided with a window 6 so that the loading of the compact disc and the like can be confirmed through the window 6. In addition, a chucking device 27 is provided at a substantially central portion inside the lid body 5. In the chucking device 27, a chuck plate in which a magnet is embedded is fixed by a chuck plate holder made of plastic, and a nail and a screw can be fixed with the plastic. The chuck plate holder attached to the lid 5 can be easily attached to and detached from the lid 5 simply by sliding.

An open button 7 for opening and closing the lid body 5
Is provided in the front part of the upper cabinet 3. With this,
Operation buttons 8 and 9 for controlling the compact disc 30
10 are provided. Reference numeral 8 denotes operation buttons for stopping the rotation of the compact disc 30, controlling ON / OFF of the display of data in the display window 11, and charging the built-in battery. Reference numeral 9 is an operation button for reproduction / pause. 10 is fast forward / rewind and AMS /
It is an operation button for SEARCH. Reference numeral 11 is a display window for displaying data on the compact disc. The display window 11 displays data such as the total number of songs, total playback time, state of each mode, and playback level. A digital signal processor (hereinafter referred to as DSP) mode switching button 12, a play mode switching button 13, an EFFECT button 14, and a repeat / enter button 15 are arranged near the display window 11. Operation buttons 8, 9, 1
0, display window 11, DSP mode switching button 12, play mode switching button 13, EFFECT button 1
4. The backlight is illuminated on the repeat / enter button 15.

There are three types of modes of the DSP mode switching button 12, a normal mode, a bass boost mode, and a dynamic digital sound mode (hereinafter abbreviated as DDS mode). The bass boost mode is a mode for emphasizing low sounds, and the DDS mode is a mode for emphasizing small sounds such as pianissimo by compressing the dynamic range. When set to the normal mode, the display window 11
No indication is given regarding the DSP mode. On the other hand, when the bass boost mode or the DDS mode is set, the display window 11 displays that the bass boost mode or the DDS mode is set. The EFFECT button 14 sets the level of the bass boost mode and the DDS mode. That is,
When the normal mode is switched to the bass boost mode or the DDS mode by the DSP mode switching button 12, the switching mode is displayed on the display window 11 and the level of the bass boost mode or the DDS mode is displayed. This level has three levels of 1, 2, and 3, and the level is controlled by pressing the EFFECT button 14.

A hold switch 16 and a resume switch 17 are provided on the front surface of the portable compact disc player 1. When the hold switch 16 is turned on, these buttons do not function even if the operation buttons 8, 9, and 10 are pressed. When the resume switch 17 is slid to the right, for example, at the time of reproduction and turned on, the song number and time at the time of stop and each mode are displayed on the display window 11.
Is displayed in. On the other hand, if the resume switch 17 is slid to the left and turned off, for example, the total number of songs and total time,
And each mode is displayed on the display window 11.

When the resume switch 17 is turned on when the performance automatically ends, the contents of the first song and each mode are displayed. On the other hand, when it is off, the total number of songs, total time, and each mode are displayed. In this way, the display data in the display window 11 is switched by switching the resume switch 17. The display data in the display window 11 is turned off by pressing the operation button 8. When the resume switch 17 is off, the operation buttons 8 and 9, the DSP mode switching button 12 and the E button
Only the button operation of the FFECT button 14 is accepted. Further, when the resume switch 17 is turned on, each button operation is accepted and the display is switched accordingly.

On the right side, a headphone jack 1
8, a volume knob 19, and a line-out jack 20 for connecting the portable compact disc player 1 to other devices. A remote jack 21, which is necessary when using the remote control, a safety lock switch 22 that prevents the lid 5 from being opened accidentally during a performance, and an illumination switch 23 are arranged on the left side surface. By sliding the illumination switch 23 to the right, for example, the portion illuminated by the backlight, that is, the operation buttons 8, 9, 10, the display window 11, the buttons 12, 13, 1,
The backlight colors of 4 and 15 are, for example, amber. Similarly, when the illumination switch 23 is slid to the left, the color of the backlight changes to green. If the mode is set to Bass Boost or DDS with the DSP mode switch button 12, DS
The color of the backlight of the P mode switching button 12 is different from that of the surrounding backlight. This allows DS
It is possible to visually confirm that the mode of the P mode switching button 12 is set to the bass boost or the DDS mode.

An open switch 24 and a disk guide lamp 25 are provided on the front left side of the upper cabinet 3 inside the lid 5. Further, an open switch claw 26 is provided at the position of the lid body 5 corresponding to the open switch 24. When the open button 7 is pressed and the lid 5 is opened, the operation buttons 8, 9, 10, the display window 11, the buttons 12,
The backlights 13, 14 and 15 and the disc guide lamp 25 (hereinafter referred to as illuminations) are turned on, and the compact disc 30 can be easily mounted even in a dark place. The lights continue to light up while the compact disc is playing. Further, when the operation button 8 is pressed, the lights are forcibly turned off. Even when the compact disc 30 is not reproduced and the operation button 8 is not pressed, the lights are set to be turned off after one minute, for example, by the timer of the microcomputer.

FIG. 5 is a block diagram of the portable compact disc player 1. Compact disc 3
Zero is rotated at CLV (constant linear velocity) by the spindle motor 32, which is driven and controlled by the motor control unit 31. The information recorded on the compact disc 30 is read by the optical head 33.

The optical head 33 irradiates the compact disc 30 with laser light, for example. The optical head 33 holds the laser beam applied to the compact disc 30 in an appropriate converged state and appropriately follows the recording track.
It has a focus servo and a tracking servo. The entire optical head 33 is moved in the radial direction with respect to the compact disc 30.

The output of the optical head 33 is amplified by the reproduction amplifier 34 and supplied to the CD decoder 35. A random access memory 36 is supplied to the CD decoder 35.
The CD decoder 35 decodes the digital audio signal from the reproduction signal of the optical head 33 and reproduces the data of the compact disc 30, that is, the recorded content, the total reproduction time and the like. The data of the compact disc 30 is displayed on the display unit 47 (corresponding to the display window 11) as needed. There are two types of this display, which can be switched alternately by the resume switch 17.

The audio data reproduced by the CD decoder 35 is supplied to the D / A converter 39 via the DSP 37 and the digital filter 38. DSP37,
As mentioned above, bass boost mode that emphasizes bass,
The DDS mode for emphasizing soft sounds is set. The reproduced audio signal analogized by the D / A converter 39 is output from the output terminal 40. Also, C
The data and the like reproduced by the D decoder 35 are supplied to the microcomputer 41.

The microcomputer 41 corresponds to an input operation section 42 (operation buttons 8, 9, 10 etc.) for performing a setting input operation such as an operation mode for driving the CD decoder 35, digital filter 38, compact disk 30. , A resume switch 17 and the like), an LED 43 for irradiating the input operation section 42, a disk guide lamp 25 for irradiating the loading section of the compact disk 30 according to the open / close state of the lid 5, a battery, etc. Non-volatile random access memory 4 with power backup
5 and the head servo unit 46 are connected. Below the operation buttons of the input operation unit 42, LEDs 43 are arranged corresponding to the operation buttons. Disc guide lamp 2
For example, 5 illuminates the light source in the direction in which the compact disc 30 is loaded for a certain period after the lid 5 is opened by operating the open button 7. The microcomputer 41
The operation of the CD decoder 35, the head servo unit 46, the display unit 47 and the like is controlled according to the operation mode set by the input operation unit 42.

FIG. 1 is a diagram showing the internal structure of the chucking device 27. The chucking device 27 includes screws 51,
Chuck plate 52, chuck plate holder 53,
Chuck plate 54, magnet 55, holder 56,
It is composed of a disc hold sheet 57.

The screw 51 is made of metal, penetrates the chuck plate 52, the chuck plate holder 53, the chuck plate 54, the magnet 55 and the disc hold sheet 57, and is fixed by the plastic holder 56. The chuck plate 52 and the chuck plate holder 53 are made of plastic. The chuck plate 52 has a hole 52A for inserting the screw 51 and a hole 5 for inserting the locking claw of the holder 56.
2B is provided. The chuck plate holder 53 is provided with a peripheral edge portion 53A and a peripheral edge convex portion 53B. The convex portion 52C of the chuck plate 52 is the chuck plate holder 5
3 is loosely fitted in the hole of the concave portion 53C.

The chuck plate 54 is made of metal,
The disc hold sheet 57 is fixed along the outer periphery thereof. A donut-shaped magnet 55 is embedded in the convex portion 54A of the chuck plate 54. The convex portion 54A of the chuck plate 54 is loosely fitted in the concave portion 53C of the chuck plate holder 53. As a result, the chuck plate 5
The second convex portion 52C and the convex portion 54A of the chuck plate 54 are fitted together.

The two engaging claws 56A and 56B of the plastic holder 56 are provided with the convex holes 54B of the chuck plate 54.
The holder 56 is disposed perpendicular to the chuck plate 54 so as to penetrate the magnet 55. That is, the locking claws 56 </ b> A and 56 </ b> B penetrate the chuck plate holder 53, the chuck plate 54, and the magnet 55, and are fitted into the holes 52 </ b> B of the chuck plate 52. By changing the number of the claws of the holder 56 from the conventional three to two, it is possible to fix the screws in terms of space.

FIG. 2 is a diagram when the chucking device 27 is attached to the lid 5. At the time of mounting, by sliding the chucking device 27 in the direction of arrow A with respect to the chucking device mounting portion 58 of the lid body 5,
Peripheral convex portion 53A and peripheral portion 53B of the chucking device 27
Are locking parts 58C, 5 of the chucking device mounting part 58.
It is placed on the lower side of 8D. The locking portion 58E of the chucking device mounting portion 58 is provided to prevent the attached chucking device 27 from coming off. In addition, at the time of removal, the chucking device 27
After lifting up in the direction opposite to the lid 5. By lifting the chucking device 27, the chucking device 27 is released from the locking portion 58E. Then, it is slid in the direction of arrow B. In this way, the chucking device 27 can be easily attached to and detached from the lid 5.

Although the present invention is applied to the portable compact disc player in this embodiment, the present invention is not limited to this, and the present invention can be applied to chucking devices in general. is there.

According to the present invention, the main parts of the chucking device for fixing the compact disc are made of plastic and the assembling process is simplified. For this reason,
For example, when repairing a compact disc player, the chucking device can be easily removed and used. Therefore, serviceability can be improved. Moreover, since the parts are made of plastic, it is possible to provide a low-cost chucking device.

[Brief description of drawings]

FIG. 1 is a diagram showing components of a chucking device of a portable compact disc player to which the present invention is applied.

FIG. 2 is a plan view of a chucking device and a lid.

FIG. 3 is a perspective view of a portable compact disc player to which the present invention is applied.

FIG. 4 is a left side view of a portable compact disc player to which the present invention is applied.

FIG. 5 is a block diagram of a portable compact disc player to which the present invention is applied.

[Explanation of reference numerals] 27 chucking device 51 screw 52 chuck plate 53 chuck plate holder 54 chuck plate 55 magnet 56 holder 57 disc hold sheet

Claims (1)

[Claims] 1. A chucking portion having a holding portion between a first chuck plate and a second chuck plate, the chucking portion including a magnet embedded in the second chuck plate, and a straight line in the lid. A chucking device, comprising: a mounting portion having a provided locking portion, wherein the holding portion is engaged with the locking portion to fix the chucking portion in the lid.