JPH04102255A - Disk player - Google Patents

Abstract

PURPOSE:To facilitate the operation and to lighten and miniaturize the player by placing a disk in a round recessed part of a tray. CONSTITUTION:The disk is placed on the tray 11 fully drawn out forwardly, and when an operation switch is pressed, the tray 11 is advanced by a motor 4. Then, a semicircular columnar boss 25 is pressed by a stopper piece 14 of a lower surface of the tray 11, and hence a laterally moving member 15 is pressed by a columnar boss 26 along a groove 15b. The laterally moving member 15 is further pressed by this circular-arcuate motion, and a boss 18 on an upper surface of the laterally moving member 15 is entered into a cam groove 13 on the lower surface of the tray 11. Then, a slant part 13a is slid on the boss 18 of the laterally moving member 15 to carry out the final movement. As a result, the tray 11 is not moved forward and backward to be held in a play position by locking. Thus, since the final fixing of the tray is performed by engaging the cam groove of the tray with the laterally moving member, it is stabilized without backlash.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a disc player in which a disc is inserted into the player by means of a tray.

(Prior Art) FIG. 9 is a schematic cross-sectional view of a conventional disc player, and FIG. 10 is a bottom view of FIG. 9.

A turntable 100 and an optical pickup (not shown) are arranged inside the disc player, and a disc 102 is correctly placed on the turntable 100 and rotated to read information using the optical pickup.

The disc player includes a tray 103 for horizontally moving the disc 102, and this tray 103 is equipped with a disc lifting mechanism 104.

The disk lifting mechanism 104 moves the bin 105 onto the tray 103.
A lever 107 equipped with a cam slope for raising and lowering these claws 106, and a rack 108 for forcibly moving this lever 107. It consists of

Four claws 106 protrude from the top surface of the tray 103 when it is fully pulled out, so these claws 106...
・Place the disk 02 manually as shown in FIG. 9.

When the operation switch for inserting a disc is pressed, the pinion 109 at the lower right of the figure rotates to feed the rack 108, and the tray 103 advances into the player in FIG. 9.

When the tray 103 hits a stopper (not shown) inside the player and stops at a predetermined position, the rack 108 (FIG. 10), which is still moving, rotates the lever 107 around the fulcrum 107a, and as a result, the claws 106 and ...is tray 103
descends against

The lowered disk 102 is placed on the turntable 100 waiting below.

(Problem to be Solved by the Invention) In the conventional player described above, the disc is placed on four wooden claws that protrude above the tray, so the operator must pay sufficient attention to ensure that the disc is properly placed on the claws. Therefore, it cannot be said that it is easy to handle.

In addition, since the tray has claws, levers, cams, etc. attached to it, the structure of the tray is complicated, and the tray becomes heavy, making the drive motor and drive system parts larger, making it difficult to downsize the disc player. .

Therefore, an object of the present invention is to reduce the weight of the tray and the size of the disc player.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a base equipped with a pinion that rotates the loading mechanism of a disc player in forward and reverse directions, and a disc mounted on the base so as to be movable back and forth. a tray for moving the turntable and the optical pickup unit, a post-merge rack and a cam groove attached to the tray, a lateral movement member that is supported by the base so as to be movable in the left and right directions and includes a left and right rack for raising and lowering the turntable and the optical pickup unit, and the front and rear racks. and a vertical/horizontal rack transfer mechanism for transferring the rack that is disposed near the intersection of the left and right racks and meshes with the pinion from the front and rear racks to the left and right racks or vice versa.

(Operation) The tray moves from the open position to the intermediate position by the engagement of the front and rear racks of the tray with the pinion, and then, due to the vertical and horizontal rack transfer mechanism, the left and right racks engage with the pinion instead of the front and rear racks, which causes lateral movement. The member engages the cam groove of the tray to move the tray from the intermediate position to the closed position and is fixed therein, while the lateral eight-movement member raises the turntable and the pickup unit.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is an internal plan view of a disc player according to the present invention;
Figure 2 is a front view of the base 2 of the disc player 1.
A pinion 3 is pivotally supported at the front part (lower part of FIG. 1), and this pinion 3 is rotated forward and backward by a motor 4, a pulley 5, a belt 6, and a gear train 7 (FIG. 2).

As shown in FIG. 3, which is an in-nrm sectional view (schematic diagram) of FIG. 1, the elevating table 8 is locked to the base 2 via a pin 8a. A turntable 9 and an optical pickup unit 10 (FIG. 1) are attached to this elevating table 8.

Furthermore, the lifting table 8 has a boss 8b on the opposite side of the pin 8a.
It is a plate that is sufficiently wide as shown in FIG. 1, and swings as shown by the arrow (■) by fitting and moving into a cam groove which will be described later.

A tray 11 is attached to the top of the base 2 so as to be movable back and forth. Note that the direction in which the tray 11 is housed in the disc player 1 is referred to as "forward", and the direction in which the tray 11 is pulled out is referred to as "retreat".

Fig. 4 is a plan view of the tray, Fig. 5 is a sectional view taken along the line V-V,
FIG. 6 is a bottom view of the tray.

The tray 11 is a plastic injection molded product, and has a large circular recess 11a and a 7Jz type circular recess 11b concentrically formed, and a cutout hole 11C for tracing the optical pickup.
is open.

On the other hand, on the back surface of the tray 11, as shown in FIG. 6, a front and rear rack 12, a cam groove 13, and a stopper piece 14 are provided protrudingly.

Near the binion 3 in FIG. 1 is a lateral moving member 15 that moves the turntable 9 and optical pickup unit 10 up and down.

This lateral moving member 15 is attached to the base 2 so as to be movable horizontally only in the left-right direction, has a left-right rack 16 at the right end, is movable in the left-right direction within the range of the elongated hole 17, and has a boss 18 on the top surface. It is erected and biased to the right in the figure by a spring 19. Furthermore, a falling wall 20 hangs down from the lateral moving member 15 as shown in FIG.
A cam groove 20a consisting of an inclined part and a horizontal part is carved. A boss 8b of the elevating table 8 is fitted into this cam groove 20a.

A vertical/horizontal rack transfer mechanism 22 is further provided near the binion 3 in FIG. This vertical and horizontal rack transfer mechanism 2
2 is arranged near the intersection of the front and rear racks 12 and the left and right racks 16, and serves to transfer from one of these racks 22.16 to the other hebinion 3.

FIG. 7 is an exploded view of the product rack transfer mechanism. The vertical and horizontal rack transfer mechanism 22 has a sickle-shaped lever 23 as its main component.
4, and a semi-cylindrical host 25 is fitted in the middle part of the sickle-shaped lever 23.
and a cylindrical boss 26 at the tip of the sickle-shaped lever 23.
will be established.

The cylindrical post 26 is fitted into a cam 115b of a back plate 15a attached to substantially the lower surface of the left and right racks 16 of the lateral moving member 15 at a position where it does not interfere with the teeth.

The sickle-shaped lever 23 is arranged below the pinion 3.

The operation of the disc player having the above configuration will be described next.

In FIG. 1, a disc is placed on the tray 11 that is fully pulled forward and the operation switch is pressed.

The pinion 3 is rotated to the left by the drive of the motor 4, and the tray 11 moves forward (from the bottom to the top in the figure).

Then, the stopper piece 14 on the lower surface of the tray 11 approaches the waiting semicircular boss 25 (arrow ■).

FIGS. 8(a) to 8(d) are action explanatory diagrams, and FIG. 8(a)
), the stopper piece 14 of the tray begins to push the semi-cylindrical boss 25 of the sickle-shaped lever. This allows the sickle-shaped lever 2
3 begins to rotate to the left around the shaft 24, and as a result, the cylindrical post 26 begins to push the lateral moving member 15 to the left along the cam groove 15b.

FIG. 8(b) shows a state in which the front and rear racks 12 have sufficiently moved due to the counterclockwise rotation of the binion 3. Continue with sickle lever 23
rotates to the left and pushes the lateral moving member 15 to the left with its circular arc movement, and the boss 18 on the upper surface of the lateral moving member 15 begins to enter the cam groove 13 on the lower surface of the tray 11.

What is important is that when the lateral moving member 15 moves to the left, its left and right racks 16 begin to engage the binion 3, and the left and right racks 16 begin to engage the binion 3 just before the front and rear racks 12 come out upward in the figure. This means that so-called vertical and horizontal rack connections have been made.

In FIG. 8(C), the tray 11 is connected to its front and rear racks 1.
2 has come off from the pinion 3, so from now on, the inclined part 13a of the cam groove 13 on the bottom surface of the tray 11 will be connected to the host 18 of the horizontally moving member 15.
The final movement is carried out by sliding it into contact with.

The lateral moving member 15 actively moves to the left due to the engagement between the binion 3 and the left and right racks 16.

Then, as shown in FIG. 8(d), since the boss 18 of the lateral moving member 15 only moves to the parallel portion 13b of the cam groove 13 of the tray, the tray 11 is not moved forward or backward but is locked and held in the so-called play position. Ru.

The cylindrical post 26 of the sickle-shaped lever 23 may have previously pushed the lateral moving member 15, or it may be pushed by the side 15c of the cam groove 15b of the lateral moving member 15, rotating counterclockwise, resulting in , the semi-cylindrical boss 25 of the sickle-shaped lever is connected to the tray 11.
It moves slightly away from the stopper piece 14 on the bottom surface. Therefore, initially the tray 11 was positioned by the stopper piece 14, but ultimately the tray 11 was positioned by the engagement between the parallel part 13b of the cam groove 13 of the tray 11 and the boss 8 of the lateral moving member 15. Ru.

On the other hand, in FIG. 2, the boss 8b of the lifting table 8, which is fitted into the falling wall 20 of the lateral moving member 15, is finally shown in the imaginary line because the lateral moving member 15 moves to the left as described above. It rises to the position shown, and scoops up the disc 27 on the tray 11 with its turntable 9, as shown by the solid line in FIG. 3, in preparation for play. Play is performed by the high speed rotation of the disk 27 and the cooperation of the trace of the optical pickup unit 10 shown in FIG.

Ejection of the disc after play is smoothly performed by reversing the procedure described above.

As described above, the disc player of this embodiment is stable without wobbling because the tray is finally fixed by fitting the cam groove of the tray with the lateral moving member.

In this embodiment, the back plate 15a is attached to the lateral moving member 15, but the cam groove 15a is attached to the lower surface of the lateral moving member 15.
b may be directly carved to reduce the number of parts.

(Effects of the Invention) As described above, in the present invention, the disk can be placed in the circular recess of the tray, making operation extremely easy, and since the tray does not have any moving parts such as claws or levers. It is simple and lightweight, and the load on the drive system parts for the tray is reduced.
There are things that make it possible to change to an 11-inch model.

[Brief explanation of the drawing]

FIG. 1 is an internal plan view of a disc player according to the present invention;
Figure 2 is a front view of Figure 1, Figure 3 is the III - of Figure 1.
4 is a plan view of the tray, FIG. 5 is a sectional view taken along line V-V in FIG. 4, FIG. 6 is a bottom view of the tray, and FIG.
The figure is an exploded view of the vertical and horizontal rack transfer mechanism, Figures 8 (a) to (
d) is an explanatory diagram of the operation, FIG. 9 is a schematic sectional view of a conventional disc player, and FIG. 10 is a bottom view of FIG. 9. 1...disc player, 2...base, 3...
Pinion, 9... Turntable, 10... Optical pickup unit, 11... Tray, 12... Front and rear rack, 13... Cam groove, 15... Lateral movement member, 1
6... Left and right racks, 22... Vertical and horizontal rack transfer mechanism, 27... Disc.

Claims (1)

[Scope of Claims] A base equipped with a pinion that rotates forward and backward; a tray that is supported by the base so as to be movable back and forth and on which a disk is placed;
A front and rear rack and a cam groove attached to the tray, a lateral movement member that is supported by the base so as to be movable in the left and right direction and includes a left and right rack and is used for raising and lowering the turntable and optical pickup unit, and the front and rear racks and the left and right racks. It consists of a vertical/horizontal rack transfer mechanism that transfers the rack located near the intersection that engages the pinion from the front and rear racks to the left and right racks, or vice versa.The tray moves from the open position to the intermediate position by engaging the front and rear racks of the tray and the pinion. Then, by the vertical and horizontal rack transfer mechanism, the left and right racks are engaged with the pinion instead of the front and rear racks, and as a result, the horizontally moving member engages the cam groove of the tray, and the tray moves from the intermediate position to the closed position. A disc player characterized in that the transversely moving member raises the turntable and the pickup unit while being fixed.