JPH0254465A - Optical disk player - Google Patents

Abstract

PURPOSE:To enable a disk tray to be delivered in and out and to unify driving sources for the disk tray and an optical disk in one by changing the rotating direction of the rotary driving means of the optical disk. CONSTITUTION:The disk tray 17 on which the optical disk is placed is provided slidably on a chassis 1. Also, the rotary driving means 6b and 7 provided at a chassis 5 being arranged underneath the tray 17 on the chassis 1 rotate the optical disk delivered in a main body in a direction on one side. A tray moving means delivers in and out the tray 17 for the main body corresponding to the rotating direction of the rotary driving means. The tray moving means is provided with a rack member provided with racks 16d and 16e and mounted slidably on the tray 17, and a pinion mechanism provided with pinions 12 and 13 and in which the pinion on one side is engaged with the rack on one side.

Description

Detailed Description of the Invention (a) Industrial Application Field This invention relates to an optical disc player that plays back signals recorded on optical discs such as CDs (compact discs) and optical DVDs (video discs), and particularly relates to This invention relates to a tray drive mechanism.

(B) Prior Art Conventionally, in this type of optical disc player, for example, an optical disc is placed on a disc tray that is carried out to the front and outside of the player body, and then the disc tray is moved to the player body by rotation of a loading drive motor. A well-known structure is such that the pickup is moved in the radial direction of the optical disk and the signal on the optical disk is read by rotating the pickup drive motor while rotating the optical disk in this state.

(c) Problems to be Solved by the Invention However, in the above-mentioned optical disc player, dedicated drive motors are used for transporting the disc tray and for driving the rotation of the optical disc. There were problems such as complexity and high manufacturing costs.

The present invention has been made in consideration of the above-mentioned problems, and is intended to provide an optical disc player that can use a single drive source for the disc tray and the optical disc.

(D) Means for Solving the Problems 1jhrJsEiI The configuration of the present invention includes a disc tray that is slidably provided on a first chassis and on which an optical disc is placed, and a disc tray that is disposed below the disc tray on the first chassis. a rotational drive means provided on a second chassis provided for rotating an optical disk placed on a disk tray and carried into the main body in one direction; and a rotational drive means for rotating the rotational drive means in one direction. This optical disc player is characterized by comprising tray moving means for transporting the disc tray into the main body by rotating the rotation drive means in the other direction, and transporting the disc tray from the main body by rotating the rotation drive means in the other direction.

The tray moving means of the present invention has two racks, a rack member that is slidable on the disk tray, and a binion on two sides, and one of the binions is moved depending on the direction of rotation of the rotational drive means. A binion mechanism mounted on the second yarn that meshes with one of the rack members is preferred.

The rack member has an elongated hole provided in the vertical direction of the second chassis, and the second chassis has a bin that is loosely fitted into the elongated hole of the rack member. During transportation, the rack member is prevented from shifting in a direction perpendicular to the disk tray transportation direction.

Further, the elongated hole of the rack member has a through hole at its front end having an inner dimension larger than the outer dimension of the bin of the second chassis, and the second chassis is attached to the first chassis with a vibration isolating member, When the loading of the disk tray into the main body is completed, the bins of the second chassis are positioned in the through holes of the rack member, and the second chassis is disengaged from the rack member, and the vibration isolating member It is held in floating paddy.

Further, the disc tray of the present invention includes a disc mounting member having at least three rotatable rollers whose surfaces are made of a soft material, and the optical disc is mounted on these rollers. A preferred configuration is such that even when the optical disc rotates on the roller when the disc tray is loaded and unloaded, the roller rotates, so the surface of the optical disc is prevented from being scratched.

(E) Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the following examples.

In FIG. 1, 1 is a first chassis (hereinafter referred to as chassis), which includes a mounting hole la for a CD mechanism 5 and a guide piece 1b for guiding a disc tray 17.

A through hole 1c into which the spindle motor 7 is inserted is provided,
Further, a guide 2 is disposed at a position where it can engage with a lock arm 18, which will be described later. 3 is a leaf spring and chassis! The press part 16 of an interlocking plate 16, which is attached to the top with a screw 3b and is provided with a press part 3a, is a rack member to be described later.
It is placed in a position where it can press i. 4 is a vibration-proofing rubber which is a vibration-proofing member, and is attached to the mounting hole 1a of the chassis 1, and its upper end is connected to the CD mechanism 5 which is the second chassis.
is inserted into the mounting hole 5a. In other words, CD Mecha 5 is 4
It is supported by the anti-vibration rubber 4 of the grip and is not affected by external vibrations. The pin 5b of the CD mechanism 5 is installed in the interlocking plate 16, which will be described later, through a long hole (hereinafter referred to as a regulation hole) 16b.
It has the role of restricting movement of the interlocking plate 16 and the CD mechanism 5 in the directions of arrows E and D. A turntable 6 is attached to the motor shaft of a spindle motor 7 attached to the CD mechanism 5, and is rotatable integrally with the motor shaft. The turntable 6 is provided with a turntable section 6a, which has the role of supporting and rotating a CD 20, which will be described later. Further, a gear portion 6b attached to the motor shaft of the spindle motor 7 is constantly meshed with an idler gear 11, which will be described later, and transmits the rotational driving force of the spindle motor 7 to the idler gear 11. Therefore, the spindle motor 7 and the gear portion 6b constitute a rotational drive means. 8 is an optical pickup, and any one known in the art may be used. 9 is a fulcrum shaft, and a rotating plate IO rotatably provided on the CD mechanism 5 is provided at the lower part. An idler gear 11 is rotatably attached to the fulcrum shaft 9 and is prevented from falling by a stopper 15. A first shaft 10a and a second shaft fob are provided upright on the rotating plate 19. A first pinion 12 is rotatably inserted into the first shaft 10a and is always in mesh with the idler gear 11, and is prevented from coming off by a stopper 15. 2nd axis tab
A spring 14 and a second pinion 13 are rotatably inserted into the second pinion! 3 is always in mesh with the idler gear 11 and is prevented from coming off by a stopper 15.

The rotating plate IO, the idler gear If, the respective binions 12 and 13, and the spring 14 constitute a binion mechanism. The respective binions [2, 13 attached to the rotary plate lO are rotated in the same direction by the eye and ring gear +1, but the biasing force of the spring I4 causes the respective binions 12 and 13 to be rotated in the first The rotating plate IO is configured to rotate integrally until the rack 16d and the second rack 16e are engaged with each other.

The interlocking plate 16 is a guide bin 1 of a disc tray 17, which will be described later.
A guide hole 16a is slidably inserted into 7i in the directions of arrows G and F to stop it from slipping out! This is prevented in 5.

As described above, the regulation hole 16b has the role of maintaining the position with respect to the CD mechanism 5. The inner diameter of the through hole (hereinafter referred to as hole) 16c provided at the front end of the regulation hole +6b is made larger than the outer diameter of the pin 5b installed upright in the CD mechanism 5.
is located in the hole 16c, the restriction is lifted.

The first rack 16d is disposed so as to be able to mesh with the first pinion 12, and the second rack 16e is arranged so as to be able to engage with the second pinion 13.
It is arranged so that it can be engaged with.

A cam groove 16f provided near the rear end of the interlocking plate 16 is into which a pin 19e of a CD holder 19 (described later) is slidably inserted, and has the role of rotating the CD holder 19 about a fulcrum shaft 19c. have. Further, the guide portion 16g at the rear end of the interlocking plate 16 is connected to the second engagement pin 18 of the lock arm 18.
It is arranged so that it can come into contact with c. The same applies to the engaging portion 16h. A pressing portion 16+ provided at the lower rear end of the interlocking plate 16 can engage with the plate spring 3, and has the role of moving the interlocking plate 16 in the direction of arrow F by the plate spring 3. Furthermore, the interlocking plate 16
The contact portion 16j, which is the front end portion of the disc tray 17, is in a relationship where it can come into contact with the contact portion 17 of the disc tray 17, and the interlocking plate 16 is in the direction of the arrow G.
When the contact portion 16j contacts the contact portion 17 in the direction indicated by the arrow G, the disc tray 17 and the interlocking plate 16 become one
configured to move in the direction.

Grooves 171.17b are provided in the disc tray 17 to improve the operability of loading and unloading the CD 20. Also long hole 17
c and 17d are escape holes for the CD holder 19, which will be described later. Furthermore, the notch 17e is for escape of the turntable 6. By positioning the guide portion 17f of the disc tray 17 inside the guide piece lb, the disc tray 1
7 is held so as to be slidable in the directions of arrows F and G.
Movement in the direction of arrow F is restricted by the portion 17k. A fulcrum shaft 19c of a CD holder 19, which will be described later, is rotatably inserted into a fulcrum hole 17h near the rear end of the disc tray 17, and has the role of holding the CD holder 19. The guide bin 17i holds the interlocking plate 16 as described above.

A fulcrum hole 18 of a lock arm 18 is rotatably inserted into the fulcrum shaft 17j, and is prevented from coming off by a stopper 15. The lock arm 18 is interlocked as described above.
Second engagement bin 18c that can engage fL16 and guide 2
And number! The engagement pin 18b is provided.

The CD holder 19 has a fulcrum shaft 19c on the disc tray 17.
is inserted and retained. Convex portion 19 of CD holder 19
A rubber roller 19a whose surface is made of a soft material is rotatably attached to the shaft 19b, and controls the movement of the CD 20 in the radial direction. In this embodiment, the number of rubber rollers 19a is four, but there may be three. The groove 19d is for escape of the turntable 6. The bottle 19e is connected to the cam groove 16f of the interlocking plate 16.
The fulcrum shaft 1 is inserted into the fulcrum shaft 1 by movement of the cam groove 16f.
The CD holder 19 is designed to rotate around 9c.

Next, the operation of this embodiment will be explained with reference to FIGS. 2 to 5.

As shown in FIG. 2, with the disc tray 17 being carried out from the main body (not shown), the user manually inserts a CD.
When the CD 20 is placed on the holder 19, the mounted CD
D20 is held without being damaged by the rubber roller 19+L. Next, when a motor circuit (not shown) operates, the spindle motor 7 starts rotating in the direction of arrow H. Along with this rotation, the idler gear 11 rotates in the direction of arrow 1, and due to this rotation, the rotating plate 1O is moved by the urging force of the spring 14 to the fulcrum shaft 9.
Arrow in the center! The second pinion 13 rotates in the second direction.
It stops when it engages with the rack 16e, and the second rack 16
Start moving e in the direction of arrow F.

The movement of the second rack 16e presses the engaging portion 16h or the second engaging pin Cl8c of the lock arm 18, but since the first engaging pin tsb is in contact with the guide portion 2a of the guide 2, the fulcrum shaft 17j Since the lock arm 18 cannot rotate around the center, the disc tray 17 can be
are moved integrally in the direction of arrow F. At this time, the CD holder 19 is kept in a horizontal state due to the engagement between the bin 19e and the cam groove 19f, as shown in FIG.
The CD 20 placed on the rubber roller 19a is also maintained in a horizontal state. The movement of the disk tray 17 further progresses in the direction of arrow F, and the movement of the disk tray 17 is stopped at the position where the guide piece tb and the contact portion 17g abut. This position is the position where the centers of the turntable 6 and the CD 20 coincide. When the spindle motor 7 rotates further from this position, the first engagement pin 18b of the lock arm 18 is located at the end 2b of the guide 2, so the lock arm 1
8, the second engagement pin 18c is pressed by the engagement portion 16h,
Rotates in the direction of the arrow ■, and the engagement pin 18c moves toward the guide portion 16g.
It engages with and maintains its position.

In the above state, the bin 5b of the CD mechanism 5 and the regulation hole 16b are in an engaged relationship, and the second binion 13 and the second rack 16e are engaged with each other.
Movement in the arrow direction or E direction is restricted. As a result, when the interlocking plate 16 further moves in the direction of arrow F, the cam groove 16f rotates the bin 19a, so the CD holder 19 moves around the fulcrum shaft 19c as shown in FIG.
The CD 20 is rotated counterclockwise, and the CD 20 is placed on the turntable section 6a of the turntable 6.

When this CD holder 19 rotates, the rubber roller 19a and the CD
It stops when a predetermined gap occurs between 2Q. CD20
The chucking may be performed by a method known in the art in which the turntable is held between turntables using a magnet, a spring, or the like. In this case, the CD 20 will be placed on the rotating turntable 6, but it will not be scratched because it is placed on the rubber roller 19a while rotating.

On the other hand, the pressing part 16i displaces the pressing part 3a of the leaf spring 3, and when it passes the apex, the second pinion 13 and the second rack 16e lose their meshing relationship, but they are interlocked by the biasing force of the leaf spring 3. The plate 16 will be moved to the position shown in FIG. In this state, the pin 5b of the CD mechanism 5 is located at the center of the hole 16c of the interlocking plate 16, the engagement between the interlocking plate 16 and the CD mechanism 5 is released, and the CD mechanism 5 is floated by the anti-vibration rubber 4. This reduces the influence of external vibrations. The loading operation has been described above, but in this state, the signal on the CD 20 is detected by the first pickup 8 and the predetermined function is obtained. H
Since it only rotates in the direction, it never enters the unloading operation.

From the unloading state of the disk tray 17, the spindle motor 7
When the CD 20 is rotated in the same direction as the signal detection state, it will always enter the loading operation, and after the CD 20 is placed on the turntable 6 and the operation is completed, even if the functions of a normal player are activated, the loading operation will not be activated. can be kept.

Next, the unloading operation will be explained.

As shown in FIGS. 4 and 5, when the spindle motor 7 is rotated in the direction of arrow 1 with the disk tray 17 housed in the main body, the idler gear it rotates in the direction of arrow H, and the rotating plate 10 rotates in the direction of arrow H around the fulcrum shaft 9, and the first pinion 12 rotates around the first rack 16d.
The interlocking plate 16 is moved in the direction of arrow G by overcoming the biasing force of the plate spring 3. At this time, pin 5 of CD mechanism 5
Although there is a gap between b and the hole 16c, the first pinion 12
Since it is driven with an extra rotation (the rotations Fi and IO rotate), no problem occurs. With this movement, the pin 19e of the CD holder 19 is guided by the cam groove 16f, and the CD holder 19 is returned to the horizontal state. Therefore, it is held by the DC 20 on the turntable 6 or by the rubber roller 19λ of the CD holder 19. When the interlocking plate 16 further moves in the direction of the arrow G, the second engagement pin 18c of the lock arm 18 disengages from the guide portion 16g, and the lock arm 18 becomes able to rotate in the direction of the arrow H. Since the disc tray 17 is no longer in contact with the end portion 2b, the movement of the disc tray 17 in the direction of the arrow G is no longer restricted.

Therefore, due to the contact between the contact portion 16j and the contact portion 17,
The interlocking plate 16 and the disc tray 17 move together in the direction of arrow G, and the unloading state shown in FIG. 2.3 can be obtained. It is sufficient to stop the rotation of the spindle motor 7 in this state.

(F) Effects of the Invention According to this invention, the disc tray can be carried in and out by simply changing the rotation direction of the rotation drive means for rotating the optical disc, and the motor that serves as the drive source for the disc tray is omitted. An optical disc player that can perform the following functions is obtained. Since the motor can be omitted, manufacturing costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the configuration of an embodiment of the present invention, Fig. 2 is a plan view of the disc tray being taken out, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is the disc tray being carried in. The plan view in this state, and FIG. 5 is a sectional view taken along the line BB in FIG. 4. ■...First chassis, 4...Vibration isolating rubber,
5...CD input, 6b...gear section, 7...spindle motor, 9...
Fulcrum shaft, 10... Rotating plate, 11... Idler gear, 12... First
Pinion, 13... Second pinion, 14...
...Spring, 16...Interlocking plate, 16b...
... Regulation hole, 16c ... Hole, 16d
...1st rack, +6e...2nd rack, 17...Disc tray, 19...C
D holder, 19a...Rubber roller, 20.
...CDoPPTM person patent attorney + translator + *# attached

Claims (1)

[Claims] 1. A disc tray that is slidably provided on a first chassis and on which an optical disc is placed, and a second chassis that is provided on a second chassis that is provided below the disc tray on the first chassis. a rotary drive means for rotating an optical disc placed on a disc tray and carried into the main body in one direction; a rotation drive means for carrying the disc tray into the main body by rotation of the rotation drive means in one direction; 1. An optical disc player comprising: tray moving means for transporting the disc tray from the main body by rotating the rotation drive means in the other direction. 2. The tray moving means has two racks, a rack member slidably attached to the disk tray, and two pinions, and depending on the direction of rotation of the rotational drive means, one of the pinions is attached to the rack member. 2. The optical disc player according to claim 1, further comprising a pinion mechanism mounted on the second chassis that meshes with one of the racks. 3. The rack member has an elongated hole provided in the vertical direction of the second chassis, and the second chassis has a pin that is loosely fitted into the elongated hole of the rack member, and the rack and pinion mesh to form a disk tray. 3. The optical disc player according to claim 2, wherein the rack member is prevented from being displaced in a direction perpendicular to the disc tray transport direction while the disc tray is being transported. 4. The elongated hole of the rack member has a through hole at its front end having an inner dimension larger than the outer dimension of the pin of the second chassis,
4. The optical system according to claim 3, wherein the second chassis is attached to the first chassis by a vibration isolating member, and the pins of the second chassis are located within the through holes of the rack member when the disk tray is completely loaded into the main body. disc player. 5. Claim 1, wherein the disc tray comprises a disc mounting member having at least three rotatable rollers whose surfaces are formed of a soft material, and the optical disc is mounted on these rollers. 5. The optical disc player according to 2, 3 or 4.