JPH0883458A - Disk player - Google Patents

Abstract

PURPOSE: To attain the smooth and sure movement of a mount base when a tray is moved to the loading/unloading position and the reading position. CONSTITUTION: The tray 18 is placed on a disk and moved by a loading mechanism to the reading position from the loading/unloading position. At this time, a front end edge 14a of the mount base 14 is elevated by elevating mechanisms 16, 32, 38 utilizing the cam structure in accordance with the movement of the mount base of a slider 28 in the width direction. Meanwhile, a pin 34 on the slider 28 is guided by a cam guide 36 which is provided on the rear side of the tray 18, by the movement of the tray 18, then the slider 28 is moved in the width direction. At the time when the front end edge 14a of the mount base 14 is elevated, the center or both ends of the front end edge 14a of the mount base 14 is elevated to make the well balanced elevation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, and more particularly to a disc player which can smoothly move a mount base in conjunction with each other when a tray moved by a loading mechanism moves to a loading / unloading position and a reading position.

[0002]

2. Description of the Related Art A conventional disk player will be described. The disc player is provided inside the device body, a device body having a box-shaped outer shape, a tray on which a compact disc (hereinafter referred to as “disc”) is placed,
A loading mechanism that moves the tray between the loading / unloading position and the reading position of the disc, a motor that is provided inside the apparatus body and drives the loading mechanism, and rotates the disc when the tray is moved to the reading position of the disc. A mount base on which a spindle or the like is placed, a rear side edge portion thereof is pivotally supported, and a front end edge thereof is swingable.

FIG. 11 shows a schematic view of a conventional disc player. On the base 1, a rear side edge 2b of the mount base 2 is pivotally supported, and a front end edge 2a is swingably provided. This mount base 2 has a spindle 2s for rotating the disc when it is moved to the disc reading position.
And pickup 2p etc. are installed. Further, a slider 3 is provided which moves forward and backward along the side edge of the mount base 2. This slider 3 is provided with a cam groove 3a,
The front end edge 2 on the side surface of the mount base 2 is included in the cam groove 3a.
The cam pin 4 provided at the corner on the a side is engaged. Therefore, as the slider 3 moves back and forth, the front end edge 2a of the mount base 2 moves up and down.

In FIG. 11, the tray 5 is at a loading / unloading position where a disk can be placed, and in this state the disk is set and the tray 5 is moved directly above the base 1 (arrow a).
It can be set to the reading position of the disc. The tray 5 is driven by a drive mechanism (not shown), and the slider 3 interlocks with the movement of the tray 5.
Moves in the direction of arrow b. By the movement of the slider 3, the cam groove 3a acts on the cam pin 4, the front end edge 2a of the mount base 2 moves upward, and the spindle 2s mounted on the mount base 2 fits into the disc.

[0005]

However, the above-mentioned conventional disc player has the following problems. The cam pin 4 of the mount base 2 is the mount base 2
Since it is provided at a corner away from the center of gravity of the, the operation is not stable due to the one-sided up state.

On the other hand, in order to increase the stability of the mount base 2, it is necessary to increase the rigidity of the mount base 2 itself, resulting in an increase in the size of the device. Further, even if the rigidity of the mount base 2 itself is increased, a structure for securely holding the mount base 2 at the raised position is required, and the structure becomes complicated.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a disc player capable of smoothly and reliably moving the mount base when the tray is moved to the loading / unloading position and the reading position. To provide.

[0008]

The present invention has the following constitution in order to achieve the above object. That is, a tray for loading / unloading a disc, and a loading mechanism for moving the tray between a loading / unloading position and a reading position of the disc,
A spindle for rotating the disc moved to the reading position is mounted, pivotally supported on the back side edge, and the front edge side is swingably provided, and when the tray moves to the disc reading position. In a disc player having a mount base on which the front edge side rises and the front edge moves down when the tray moves to the disc loading / unloading position, the disc player is arranged close to the front edge of the mount base.
The slider is provided so as to be movable in the width direction of the mount base in the direction along the front end edge of the mount base, and is provided between the slider and the front end edge of the mount base. By a lifting mechanism having a cam structure that raises and lowers the front edge side of the mount base, a pin provided on the slider, and the movement of the tray, the tray is moved in order to move the slider when the tray moves near the disc reading position. A linear guide portion provided on the back surface of the tray, which is linearly provided in parallel with the moving direction of the tray from the front end side to the rear side while the pins are engaged, and the linear guide on the rear side of the tray. And a cam guide having a lateral guide portion communicating with the portion. The elevating mechanism may elevate the center or both ends of the front edge of the mount base.

At both ends of the slider, there are provided a first cam portion and a second cam portion corresponding to both corners on the front edge side of the mount base, and the slider moves from the loading / unloading position of the disk to the reading position. The front side is the first cam,
The moving side is the second cam, and the first cam is an elevating mechanism having a cam piece having an inclined surface that enters the corner of the front end edge of the mount base and moves up the mount base when the slider moves. The second cam has a cam groove that engages with a pin provided on the front end edge of the mount base, and the front end edge of the mount base is raised at the same time when the front end edge of the mount base is raised by the first cam. It is a lifting mechanism.

As the loading mechanism, a rack provided on the back surface of the tray and a gear train to which power is transmitted from the motor are meshed with each other so that the motor can move the tray between the loading / unloading position and the reading position. good. In addition, the portion of the cam guide extending from the linear guide portion to the lateral guide portion is formed as an inclined guide portion, while the slider pin is guided by the inclined guide portion of the cam guide to slightly move the slider laterally. At this time, in order to mesh with the gear train and further move the slider laterally by the gear train, a rack that meshes with the gear train may be provided on the slider and the slider may be forcibly moved.

[0011]

Next, the operation will be described. The disc is placed on the tray, and the loading mechanism moves the tray from the loading / unloading position to the reading position. At this time, by moving the slider in the width direction of the mount base, the front end edge of the mount base is raised by the lifting mechanism of the cam structure. By the movement of the tray, the pins on the slider are guided by the cam guides provided on the back surface of the tray, and the slider is moved in the width direction. Further, when the front end edge of the mount base is raised by the elevating mechanism, the center or both ends of the front end edge of the mount base are raised and lowered by the elevating mechanism in order to raise the front end in a well-balanced manner.

The first cam portion and the second cam portion at both ends of the slider are provided.
A cam portion is provided, and when the first cam moves the slider, the inclined surface of the cam piece enters the corner of the front end edge of the mount base to raise the mount base, and at the same time, the second cam also moves the front end of the mount base. The mount groove is raised by a cam groove that engages with a pin provided on the edge.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a disc player according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic structural explanatory view showing an internal structure. 2 is a side explanatory view showing an ejected state (a loading / unloading position) of the disc, and FIG. 3 is a side explanatory diagram showing a set state of the disc. FIG. 4 is a rear view of the tray.

First, the structure will be described. A base 12 is provided in a casing 11 of the disc player 10, and a mount base 14 is arranged in an opening 12a substantially at the center of the base 12. This mount base 14
Is rotatably supported by the rear side edge of the casing 11, and the front end edge 14a
Can be swung. Reference numeral 18 denotes a tray on which a disc (not shown) is placed, and the tray 18 has a placing portion 18a on which the disc can be placed. Also, tray 1
8 can be inserted into and protruded from the front surface F of the casing 11. The mount base 14 is equipped with a conventionally known spindle 15a for reproducing a disc, a pickup 15b, and the like.

The tray 18 can be moved back and forth by being guided by rail pieces 13 ... Scattered along both side edge portions 12A and 12B of the base 12. On the back surface of the side edge of the tray 18, a rail groove 18 that engages with the rail pieces 13 ...
b and 18b are formed. A rack 22 is provided on the back surface of the tray 18 in the advancing / retreating direction of the tray 18, and the rack 22 meshes with a gear 24a of a gear train 24 provided on the base 12 along the front surface F of the base 12. There is. The gear train 24 is powered by a motor 26.

The front end edge 14a of the mount base 14
On the base 12 between the gear train 24 and the gear train 24.
8 are arranged. This slider 28 is
It is possible to slide between both side edges 12A and 12B. The slider 28 has moved to the side edge portion 12A side in FIG. 1, and this position is set as the eject position.
8 is moved to the other side edge portion 12B, the slider 28
Set position. At the eject position of the slider 28, the front edge 14a of the mount base 14 is in a lowered state (eject state) (see FIG. 2), and at the set position of the slider 28, the front edge 14 of the mount base 14 is in the lowered position.
This is a state in which a is raised (reading position) (see FIG. 3).

Now, the structure of the slider 28 will be described with reference to FIGS. 5 and 6. 5 is a plan view of the slider 28, and FIG. 6 is a left side view of the slider 28. The slider 28 has a first cam portion 28A on the side edge 12A side of the base 12 and a second cam portion 28B on the side edge 12B side, and the first and second cam portions 28A, 28B have a connecting member 29.
Are connected by.

The second cam portion 28B has a piece 30 in the shape of a right-angled triangle in a plane and a slide pin 34 provided on the piece 30.
And the cam groove 3 that opens to the mount base 14 side of the piece 30.
2 and. The inclined surface 30a of the piece 30 is 45
Inclined to degrees. Further, the cam groove 32 is formed in a staircase shape, and the side edge portion 12B side is low and the side edge portion 12A side is high. A pin 16 provided at a corner of the front end edge 14a of the mount base 14 on the side edge portion 12B side is engaged with the cam groove 32.

The slide pin 34 is engaged with a cam guide 36 formed on the back surface of the tray 18. The cam guide 36 includes a linear guide portion 36a extending in the advancing / retreating direction of the tray 18, an inclined guide portion 36b that is obliquely bent at the tip end side of the tray 18, and a side guide portion 36c that reaches the side edge. The tilt guide portion 36b is tilted at 45 degrees.

The first cam portion 28A is the mount base 14
It has a cam piece 38 that enters the lower surface of the corner of the front edge 14a on the side of the side edge portion 12B. The cam piece 38 is formed of an inclined surface 38a and a support portion 38b that has entered under the corner of the front end edge 14a of the mount base 14 on the side edge 12A side in the ejected state.

A lock groove 40 is provided on the upper surface of the first cam 28A. This lock groove 40 is provided when the tray 18 moves from the loading / unloading position to the reading position.
In order to prevent the slider 28 from moving in the initial stage of movement until the start of movement to some extent, a lock strip 42 provided on the lower surface of the tray 18 is engaged. On the other hand, a rack 44 is formed on the front surface F side of the first cam portion 28A. The rack 44 is in a state where it is not meshed with the gear 24a of the gear train 24 when the slider 28 is in the eject state (see the state in FIG. 1).

The slider 28 has both side edges 12A and 12A.
Although freely slidable between B, the slider 28 is guided by the guide means (not shown) with respect to the base 12.

Next, a more detailed structure will be described together with the operation. In the state shown in FIG. 1, the placing portion 1 of the tray 18
Put the disk on 8a and switch on the motor 2
6 drives to drive the gear train 24. Then, the gear 24
The tray 18 is retracted via the rack 22 on the back surface of the tray 18. At this time, the slide pin 34 is attached to the cam guide 3
6 and the slide pin 34 is engaged with the cam guide 36.
The slider 28 is not moved by being guided by the straight guide portion 36a. The lock groove 40 on the upper surface of the first cam 28A engages with the lock ridge 42 on the lower surface of the tray 18 in a state where the disc of the tray 18 can be mounted and removed, and restricts the movement of the slider 28. This is to prevent the slider 28 from moving and the front end edge 14a of the mount base 14 to rise in the initial stage of the movement of the tray 18 to the disc reading position.

Further, when the tray 18 retracts and the slide pin 34 reaches the inclined guide portion 36b of the cam guide 36, the slider 28 starts to move laterally along the inclined guide portion 36b (see FIG. 7). ). At this time, tray 1
8 the lock strip 42 on the lower surface and the second cam 28 of the slider 28.
The engagement with the lock groove 40 on the upper surface of A is disengaged. And
The slide pin 34 is the tilt guide portion 36 of the cam guide 36.
When it reaches the midpoint of b, the rack 44 of the slider 28 and the gear 24a mesh with each other, and the rack 22 on the back surface of the tray 18 and the gear 24a disengage (see FIG. 8). The rack 44 of the slider 28 and the rack 22 on the back surface of the tray 18 may simultaneously mesh with the gear 24a. This is because the tilt guide portion 36b is tilted by 45 degrees and the rack 22 and the rack 44 are orthogonal to each other.

Subsequently, the slider 28 moves as the gear 24a rotates, and when the slide pin 34 reaches the boundary between the inclined guide portion 36b and the side guide portion 36c of the cam guide 36, the slider 28 slightly moves. , The movement of the tray 18 in the advancing / retreating direction is restricted to the set position (see FIG. 9). Further, when the slider 28 moves, the slider 2
The pin 16 of the front end edge 14a of the mount base 14 rises along the cam groove 32 of the second second cam portion 28B, and the corner of the front end edge 14a of the mount base 14 on the side edge portion 12B side rises. On the other hand, the first cam portion 28 of the slider 28
The angle on the side edge 12A side of the front end edge 14a of the mount base 14 rises along the inclined surface 38a of the A cam piece 38.
As described above, by the action of the first and second cam portions 28A and 28B, both corners of the front end edge 14a of the mount base 14 are guided and rise.

Then, the spindle 15a is fitted to the disk placed on the tray 18 to set the disk.
At this time, the slider 28 is moved L from the side edge portion 12A toward the side edge portion 12B. While the slider 28 moves L, the slide pin 34 is positioned on the side guide portion 36c of the cam guide 36, and the movement of the tray 18 in the advancing / retreating direction is restricted. In addition, the slider 28 has the side edge portion 1
When moved to the 2B side, a limit switch (not shown) detects the position and the operation of the motor 26 stops (see FIG. 10).

As described above, when the slider 28 is moved to the set position, the tray 18 is ready to read the disc. When ejecting, the motor 2
The tray 18 can be moved to the loading / unloading position of the disc by rotating 6 in the reverse direction.

In the above embodiment, the first and second cam portions 28A and 28B of the slider 28 have a lifting mechanism by the pin 16 and the guide 32, and a structure in which the inclined surface 38a of the cam piece 38 is inserted from the side. Although different structures are used, the cam mechanism may be lifted and lowered so that both corners of the front end edge 14a of the mount base 14 are lifted by the pin 16 and the guide 32.

Further, when the mount base 14 is moved between the loading / unloading position and the reading position of the disk, a part of the mounting base 14 is engaged with the rack 44 of the slider 28. It may be moved only by the relationship between the cam guide 36 and the pin 34 of the slider 28.

Further, the pin 16 may be provided at the center of the front end edge 14a of the mount base 14, and the guide 32 may be provided at the position of the slider 28 corresponding to the pin 16. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. is there.

[0031]

The disc player according to the present invention is constructed as described above and is supported at both corners or the center of the tip edge of the mount base, so that the mount base can be reliably moved up and down. Further, the mount base can be reliably moved by moving the slider in conjunction with the movement of the tray and moving the slider in conjunction with the gear train that moves the tray.

Gears of a gear train that meshes with the rack of the tray to move the tray can be common gears that mesh with the rack of the slider to move the slider.
It has a remarkable effect that the structure can be simplified.

[Brief description of drawings]

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

FIG. 2 is a schematic side view showing an eject state of the disc player according to the present invention.

FIG. 3 is a schematic side view showing a set state of discs of the disc player according to the present invention.

FIG. 4 is a rear view of the tray.

FIG. 5 is a plan view of a slider.

FIG. 6 is a left side view of the slider.

FIG. 7 is an explanatory view showing the movement of the tray of the disc player according to the present invention, in particular the relationship between the mount base and the tray.

FIG. 8 is an explanatory view showing the movement of the tray of the disc player according to the present invention, in particular the relationship between the mount base and the tray.

FIG. 9 is an explanatory view showing the movement of the tray of the disc player according to the present invention, particularly showing the relationship between the mount base and the tray.

FIG. 10 is an explanatory diagram showing a set state of trays of the disc player according to the present invention.

FIG. 11 is an explanatory diagram showing a schematic diagram of a conventional disc player.

[Explanation of symbols]

 10 Disc Player 11 Casing 12 Base 14 Mount Base 18 Tray 22 Rack 26 Motor 28 Slider 30 Piece 32 Cam Groove 34 Slide Pin 36 Cam Guide 40 Lock Groove 42 Lock Strip

Claims (6)

[Claims] 1. A tray for loading / unloading a disc, a loading mechanism for moving the tray between a loading / unloading position and a reading position of the disc, and a spindle for rotating the disc moved to the reading position. Is mounted, is pivotally supported at the rear edge, and the front edge side is swingably provided.When the tray moves to the disc reading position, the front edge side rises and the tray moves to the disc loading / unloading position. In a disc player having a mount base whose front edge is lowered when moving, in a width direction of the mount base, which is arranged close to the front edge of the mount base and extends along the front edge of the mount base. A slider that is provided so that it can be mounted between the slider and the front end edge of the mount base, and can be mounted by moving the slider in the width direction. By a lifting mechanism having a cam structure that raises and lowers the front edge side of the base, a pin provided on the slider, and the movement of the tray, the tray is moved to move the slider when the tray moves near the reading position of the disc. A linear guide portion that is provided on the back surface and is linearly provided in parallel with the moving direction of the tray from the front end side to the rear side while the pins are engaged, and the linear guide portion on the rear side of the tray. And a cam guide having a side guide part that communicates with the disc player. 2. The disc player according to claim 1, wherein the lifting mechanism raises and lowers the center of the front end edge of the mount base. 3. The disc player according to claim 1, wherein the lifting mechanism raises and lowers both ends of a front end edge of the mount base. 4. A first cam part and a second cam part, which are located at both corners of the mount base on the front edge side, are provided at both ends of the slider, and the slider moves from the loading / unloading position of the disk to the reading position. The front side is a first cam and the moving side is a second cam, and the first cam has an inclined surface that enters the corner of the front front edge of the mount base to raise the mount base when the slider moves. An elevating mechanism having a cam piece, wherein the second cam has a cam groove that engages with a pin provided on a front end edge of the mount base, and at the same time when the front end edge of the mount base is raised by the first cam, the mount base 4. The disc player according to claim 3, wherein the disc player is an elevating mechanism that raises the front edge of the disc player. 5. The loading mechanism is capable of moving a tray between a loading / unloading position and a reading position by a motor by engaging a rack provided on the back surface of the tray with a gear train to which power is transmitted from the motor. The disc player according to claim 1, 2 or 3, wherein the disc player is a disc player. 6. A portion of the cam guide extending from a straight guide portion to a lateral guide portion is formed into an inclined guide portion, and a slider pin is guided by the inclined guide portion of the cam guide to move the slider laterally. When a slight movement is made, the rack is engaged with the gear train, and in order to further move the slider laterally by the gear train, a rack engaging with the gear train is provided on the slider and the slider is moved. The disc player according to claim 4.