JP2579408Y2 - Disc player device - Google Patents

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 which is a component of an audio device mounted on a car or installed indoors, and more specifically, a disc storing music information or the like for sending the disc. The present invention relates to a disc player device which detects that a mechanism has been sent to a retracting mechanism arranged in parallel with a disk drive mechanism, so that each mechanism of the apparatus main body operates accurately.

[0002]

2. Description of the Related Art In recent years, audio equipment (acoustic equipment) has been remarkably developed. 2. Description of the Related Art A digital audio system that encodes an optical disk formed on a board surface in, for example, a pit shape, and optically reads the pit information is mainstream.

[0005] Referring to FIGS. 5 and 6, a description will be given of a conventional disk player device 10 mounted on an automobile or the like. Reference numeral 15 denotes a disk, and the disk 15 has a thin disk shape made of polycarbonate or the like. Music or various kinds of information are digitally encoded on the board and formed in a pit shape. Then, the discs 15 are stored in the delivery mechanism 20 in multiple stages.

The sending mechanism 20 is built in the apparatus main body 11, and in this example, six discs 15 can be stored in a multi-stage manner, and the disc 15 can be freely moved from an arbitrary stage by manual operation of the apparatus. It is configured to be able to send out to the drive mechanism 35 side.

[0005] Further, in the sending direction of the disk 15 by the sending mechanism 20, a retracting mechanism 2 for retracting the disk 15 is provided.
5 are provided. In the retraction mechanism 25, an arm 28 extends from a pedestal 26, and retraction rollers 27a and 27b are provided at the tip of the arm 28 and the pedestal 26, respectively. The retraction rollers 27a and 27b are biased by a spring 29 mutually. It is constituted so that it may always contact with.

Further, the retraction mechanism 25 can operate as shown by an arrow M in FIG. 5 by a vertical movement mechanism (not shown), and the discs 15 stored in a multi-stage manner in the delivery mechanism 20 are delivered from an arbitrary position. However, the disk 15 can be pulled in.

On the other hand, the disk 15 in the sending mechanism 20
Of the apparatus main body 1 between the outlet of the
A light-emitting unit 31 and a light-receiving unit 32 are respectively disposed on the lower plate and the upper plate via a pedestal.

As the light emitting section 31, a light emitting diode or the like which emits emitted light L of an arbitrary wavelength ranging from visible light to infrared light is applied, and the light receiving section 32 emits light by the photoelectric effect when the emitted light is incident. A phototransistor or the like that generates power is applied to each other to form the detection mechanism 30.

As shown in FIG. 6, a drive unit 36 such as an electric motor is provided in parallel with the delivery mechanism 20 and is mounted in a disk hole 16 opened at the center of the disk 15. A disk drive mechanism 35 having a drive shaft 37 protrudingly provided on a turntable that is driven to rotate is built in the apparatus main body 11.

The operation of the disk player apparatus 10 constructed as described above will be described.
Are stored in the transmission mechanism 20 in a multi-stage manner (storage state A
1) In this state, when, for example, the uppermost disk 15 is selected, the retraction mechanism 25 moves here and the disk 1
5 is sent to the disk drive mechanism 35 (delivery state A
2 and sending state A3).

In the sending state A2, the disk 15 shields the emitted light L emitted from the light emitting section 31 to the light receiving section 32 of the detection mechanism 30 and receives the emitted light L to generate light at the light receiving section 32. The photovoltaic power disappears, and it is detected that the disc 15 has been sent from the sending mechanism 20 by a control mechanism (not shown) including an electronic circuit.

When the detecting mechanism 30 detects that the disk 15 has been sent in the sending state A2, the retracting mechanism 25
The pull-in rollers 27a and 27b of FIG. 3 interlock and draw the disk 15 into the disk drive mechanism 35, and the disk hole 16 of the disk 15 is mounted on the drive shaft 37 of the disk drive mechanism 35 (read state A4).

After that, while rotating the disk 15 by the disk drive mechanism 35, the pits on the surface of the disk are irradiated with a laser beam, for example, and the presence or absence and the length of the reflected light from the pits are read to read the pits. Music information and the like.

Incidentally, a disc exchange mechanism capable of arbitrarily selecting the discs 15 stored in a multi-stage manner is constituted by the sending mechanism 20 and the pull-in mechanism 25 and the like.

[0015]

However, the above-mentioned conventional light-emitting unit and light-receiving unit are provided separately, and the disk blocks the emitted light, thereby detecting that the disk has been sent. According to the disc player device having the detecting mechanism, the disc is generally housed in the sending mechanism in a multi-stage manner, and the disc tends to be further multi-staged. When the light emitting unit and the light receiving unit are arranged in the apparatus main body between the light emitting unit and the retracting mechanism, the separation distance between the light emitting unit and the light receiving unit becomes large,
There is a problem in that the emitted light emitted from the light emitting unit is attenuated by the separation distance and the amount of light reaching the light receiving unit is reduced, which causes a malfunction of the detection mechanism of the disk.

Further, with the increase in the separation distance, the light emitting unit and the light receiving unit are arranged while being finely adjusted in their installation positions on the apparatus main body, so that the light emitted from the light emitting unit is accurately received by the light receiving unit. Therefore, there is a problem that the installation is extremely difficult and the amount of emitted light received by the light receiving unit is reduced due to a minute displacement of the installation position.

Further, in order to dispose a detection mechanism in which the light-emitting part and the light-receiving part are separated from each other in the apparatus main body, each mounting space is required. In addition to being a negative factor to the demand for smaller and thinner devices, means for reducing the process of arranging the light-emitting unit and the light-receiving unit in the device main body have not been devised and are still in the old state, especially in terms of manufacturing costs. There was a problem that no measures were taken.

[0018]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a sending mechanism for sending a single disk selected from multi-stored disks, and a sending mechanism for sending the selected disk. In a disc player device having a drawing mechanism provided with a drawing roller that moves to a position of a disk and draws the disk toward the disk drive mechanism, and a detection mechanism that detects that the disk has been sent from the sending mechanism, The detection mechanism has an integral structure of a light emitting unit that irradiates emitted light to the disk sent from the sending mechanism and a light receiving unit that receives reflected light from the disk, and is provided alongside the sending mechanism in the retracting mechanism. It is an object of the present invention to provide a disk player device wherein the draw-in roller is operated by detecting a disk by a detection mechanism.

[0019]

According to the present invention, the emission of light emitted from the light emitting portion of the detection mechanism is applied to the disk surface of the disk sent from the sending mechanism, and the reflected light is received by the light receiving portion, whereby the sending of the disk is performed. Can be detected. And
If the light emitted from the light emitting unit is not received by the light receiving unit as reflected light, it means that the disk has not been sent out from the sending mechanism.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. First, as shown in FIG. 1, a main part of a disc player device 70 according to the present invention includes a disc 75 which is stored in multiple stages and a sending mechanism 80 for sending the disc 75, and a disc which is sent from an arbitrary stage. The drawing mechanism 85 moves in the direction of arrow M 'so as to correspond to the drawing 75 and draws out the disc 75 that has been sent out, and the drawing mechanism 85 from the bottom end of a base 86 on which the drawing rollers 87a and 87b of the drawing mechanism 85 are provided. And a detection mechanism 90 extended between the transmission mechanism 80 and the transmission mechanism 80.

A disk 75 having a thin disk shape in which music or various information is digitally encoded and formed in a pit shape on the surface of the disk is stored in a multi-stage manner in a transmission mechanism 80 configured to transmit the disk 75. Have been.

In the present embodiment, the sending mechanism 80 is capable of storing six disks 75 in a multi-stage manner, and the operating mechanism of the apparatus allows the sending mechanism 80 to freely move the disk 75 from an arbitrary stage. Is configured to be capable of being delivered to the pull-in mechanism 85 disposed in the delivery direction of.

The retraction mechanism 85 includes a base 86 having an arm 88 provided on a base 86, and a retraction roller 87 provided on a distal end of the arm 88 and a pedestal corresponding to the distal end.
a, 87b are rotatably arranged, and the pull-in rollers 87
a and 87b are urged by an urging spring 89 so as to be always in contact with each other.

Further, the retraction mechanism 85 can be operated as shown by an arrow M 'in FIG. 1 by a vertical movement mechanism (not shown).
5 is sent from an arbitrary stage, the retraction mechanism 8 is placed at that position.
The disk 75 is moved by moving the disk 5.

The pull-in rollers 87a of the pull-in mechanism 85,
A detection mechanism 90 is similarly provided via a pedestal at the tip of the sending mechanism 80 provided with the 87b.

The detecting mechanism 90 extends between the sending mechanism 80 and the retracting mechanism 85, and includes a light emitting diode which emits emitted light L1 'having an arbitrary wavelength from visible light to infrared light. Light emitting element 91 (light emitting portion) such as
A light receiving element 92 (light receiving portion) such as a phototransistor that generates a photovoltaic force by the photoelectric effect when the reflected light L2 'reflected by 1' to the object is received is integrally formed.

The detection mechanism 90 will be described in detail with reference to FIG. 2. A chip-shaped light emitting element 91 and a light receiving element 92 are mounted on an element main body 93 made of resin or ceramics as a housing. Are optically separated from each other.

Accordingly, the emitted light L1 'emitted from the light emitting element 91 is reflected by the surface of the disk 75, is received by the light receiving element 92 as reflected light L2', and is output as photovoltaic power.

Here, the photoelectromotive force of the light receiving element 92 is
As shown in FIG. 3, the detection voltage S is connected to one input terminal of the comparator 100, and the other input terminal of the comparator 100 is applied with a reference voltage K set to a predetermined value in advance. I have.

The comparator 100 detects the detection voltage S and the reference voltage K
Has a function of outputting a determination signal F when the detection voltage S becomes large, for example.

As shown in FIG. 4, a drive unit 96 such as an electric motor and a turntable which is mounted in a disk hole 76 opened at the center of the disk 75 and is driven to rotate by the drive unit 96 project. Drive shaft 97 installed
And a disk drive mechanism 95 having the following.

Next, the operation of the disc player device 70 constructed as described above will be described in sequence. First, the discs 75 are stored in a multi-stage manner in the sending mechanism 80 (storage state A1 '). For example, when the uppermost disk 75 is selected by an operation of the operator of the present apparatus, the retraction mechanism 85 is moved to a position corresponding to the uppermost disk, and the disk 75 is sent out to the disk drive mechanism 95 side. (Delivery state A2 ').

In the sending state A2 ', the disk 7
When the emission light L1 'emitted from the light emitting element 91 of the detection mechanism 90 is applied to the bottom surface of the detection mechanism 5, the detection light L1' is reflected by the bottom surface to become reflected light L2 ', and the reflected light L
2 ′ is received by the light receiving element 92. And the light receiving element 9
2, a detection voltage S is transmitted, the comparator 100 compares and compares the detection voltage S with the reference voltage K, and the comparator 100 outputs a determination signal F.

Therefore, by processing the reference voltage K by a control mechanism (not shown) composed of an electronic circuit or the like, it is perceived that the disk 75 has been sent from the sending mechanism 80.

In the delivery state A2 ', the detection mechanism 90 detects that the disk 75 has been delivered, and
The disk 75 is continuously sent out by the sending mechanism 80 (delivery state A3 '), and the draw-in rollers 87a and 87b of the draw-in mechanism 85 work together to draw the disk 75 into the disk drive mechanism 95. The disk hole 76 is mounted on the drive shaft 97 of the disk drive mechanism 95 (read state A4 ').

Thereafter, while the disk 75 is rotated by the disk drive mechanism 95, the pits on the surface of the disk are irradiated with, for example, a laser beam, and the presence or absence and length of the reflected light from the pits are read. Information and the like can be played.

[0037]

As is apparent from the above description, according to the present invention, the detection mechanism has an integral structure of the light-emitting unit and the light-receiving unit and is provided in the pull-in mechanism, and the light-emitting unit is mounted on the disk sent from the sending mechanism. Irradiate the emitted light emitted from the
Since the reflected light is received by the light receiving unit to detect the sending of the disk, a malfunction related to the detection can be prevented as compared with the conventional one in which the light emitting unit and the light receiving unit are separated.

Further, it is not necessary to finely adjust the installation position as compared with the case where the light emitting unit and the light receiving unit are separated. For this reason, the emitted light from the light emitting section is accurately received by the light receiving section, and the size and thickness of the apparatus main body can be reduced, and the cost required for manufacturing can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of a disc player device according to the present invention.

FIG. 2 is a perspective view showing a main part of a sending mechanism and a detecting mechanism in the apparatus.

FIG. 3 is a configuration diagram for explaining a configuration for detecting the sending of a disk in the device.

FIG. 4 is a plan view showing the device.

FIG. 5 is a side view showing a main part of a conventional disc player device.

FIG. 6 is a plan view of a conventional disc player device.

[Explanation of symbols]

 Reference Signs List 70 disc player device 75 disc 80 sending mechanism 85 drawing mechanism 87 drawing roller 90 detecting mechanism 91 light emitting element 92 light receiving element 93 element body L1 'emitted light L2' reflected light 95 disk drive mechanism

Claims (1)

(57) [Scope of request for utility model registration] 1. A delivery mechanism for delivering a single disc selected from multi-staged discs, and a disc drive mechanism which moves the disc to the position of the disc delivered from the delivery mechanism and moves the disc to the disc drive mechanism side. And a detecting mechanism for detecting that a disc has been sent from the sending mechanism, wherein the detecting mechanism emits light to the disc sent from the sending mechanism. And a light receiving unit that receives reflected light from the disk, and is provided in parallel with the sending mechanism side of the pull-in mechanism, and the pull-in roller is operated by the detection of the disk by the detection mechanism. A disc player device characterized in that: