Device for loading a tray down into a pick up disk player

Details Device for loading a tray down into a pick up disk player Device for loading a tray down into a pick up disk player

1997-09-12

2001-05-15

Korzuch, William R. (Department: 2153)

Dynamic information storage or retrieval

With particular cabinet structure

Slotted for edgewise insertion of storage disc

C369S075210

Reexamination Certificate

active

06233216

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates to a loading device of a disc player using light such as CD (Compact Disc) or DVD (Digital Video Disc).
Generally, the disc player comprises a loading motor for loading and unloading a tray unit mounted on one side of a main base and for capturing a disc, and a driving motor for a pick-up mounted on another side of the main base and the pick-up formed on a guide shaft of the pick-up base to slide. Further, the loading device comprises a rack part formed on one side of the tray unit and combines a pinion gear which receives the turning effect from the loading motor into the rack part, thereby a corresponding movement of the disc is executed to a turn table formed on the pick-up base, and loading and unloading of the tray unit is executed by these structures.
Hereinafter the structure and movement of the disc loading device are described in detail by accompanying
FIG. 1
to FIG.
3
.
FIG. 1
is a perspective view of a general disc player,
FIG. 2
is a top view of the
FIG. 1
, and
FIG. 3
is a front view.
As shown in the above FIGS, a conventional disc player includes a tray
13
, and a loading motor
2
mounted on one side of a main base
1
mounted within a main body
20
, in which the turning effect of the loading motor
2
delivered through a belt
3
to an idle gear
7
having a pinicn gear
7
a
via a first and second gears
5
,
6
, the above gears compose a gear train from a pulley
4
.
Further, an arm
9
is rotatively mounted on a shaft of the second gear
6
, whereby the idle gear
7
is rotatively mounted on another shaft
9
a
mounted in a first end part
9
b,
and a guide bush
10
is protected on a second end part
9
c.
Then a cam
11
having a cam groove
11
a
is rotatively mounted on a cylindrical outer peripheral surface at lower side of the shaft
8
, and lower side of the guide bush
10
, which is extended toward the bottom side through a bush introducing grooie
12
formed on the main base
1
, is inserted into a bush inserting groove
11
b.
On the other hand, a rack gear
14
mounted according to driving direction of the tray
13
at one side of bottom surface of the tray
13
and combined with the pinion gear
7
a
of the idle gear
7
, where the rack gear
14
includes a linear rack gear
14
a
mounted according to driving direction of the tray
13
, and a circular rack gear
14
b.
A sign
15
represents a protection formed on a pick-up supporting part for supporting a pick-up base (not illustrated) and combined with the cam groove
11
a
of the cam
11
, where the; pick-up base is fixed with hinge on the main base
1
and on which the pick-up is mounted.
Regarding the above-identified structure, a movement process of the tray of conventional disc player is described in the following.
Firstly, when a loading signal is applied to the apparatus in state that the tray
13
is shifted to the main body
20
, in other words, a disc D is placed on the ejected tray
13
, the pulley
4
mounted on the motor shaft clockwise turns in accordance with driving of the loading motor
2
, and the turning effect of the pulley
4
is delivered to the first gear
5
, the second gear
6
and idle gear
7
, thereby the pinion gear
7
a
which combined with the rack gear
14
of the tray
13
moves to a loading position of the tray
13
.
If the pinion gear
7
a
which receives turn affect from the loading motor
1
clockwise turns, the tray
13
having the rack gear
14
moves in the direction of the arrow in FIG.
2
. The movement of the tray
13
is finished when a rear end part of the linear rack gear
14
a
reaches to the pinion gear
7
a
as shown in
FIG. 2
; thereafter the apparatus is continuously driven for a safe landing on the turn table (not illustrated), when the movement of the tray
13
is finished.
Further, if the pinion gear
7
a
turns without stop when the movement of the tray
13
is finished, the arm
9
counterclockwise turns centering around the shaft
8
by a turning of the pinion gear
7
a
of the idle gear
7
mounted on the first end part of the arm
9
which is rotatively mounted on the shaft
8
of the second gear
6
, and the pinion gear
7
a
moves in accordance with the circular rack gear
14
b.
In this process, the guide bush
10
also turns in a counterclockwise direction according to the guide groove
12
.
At this time, the cam
11
turns centering around the shaft
8
by that the end part of the guide bush
10
is combined with the bush inserting groove
11
b
formed on a side of the cam
11
, thereby the projection
15
of the sled base which combined with lower part of a eject portion (a first portion) (
11
d
) of the cam groove
11
a
is placed in a loading position (a second portion) (
11
c
) of the cam groove (
11
a
), then the disc placed on the tray
13
lands on the turn table of the spindle motor by a movement of the pick-up base.
An unloading movement of the disc is executed by reversing the above movements.
In the conventional loading device of the disc tray, since the loading motor is fixed on a side of the main base, there are many components for delivering the driving power from the loading motor to the pinion gear, turning radius of the idle gear is large, and the large belt pulley is used, it is impossible to minimize the size of the apparatus is and to increase the delivered power.
Although not shown in the drawings, the prior art also requires a rocking device for holding the tray; therefore, the miniaturization of the apparatus is difficult.
SUMMARY OF THE INVENTION
The objects of the present invention are to overcome problems and disadvantages of the conventional device.
In order to achieve the above-mentioned objects, a loading device according to the present invention, as broadly defined and embodied herein, comprises a tray for movement between a loaded position and an ejected position; a loading motor having a motor shaft and mounted on a main base; and a driving means for moving the tray between the loaded position, and ejected position by power from the loading motor. The driving means is rotatably mounted centering on the motor shaft of the loading motor.
According to another aspect of the present invention, as embodied herein, a loading device for moving a tray of a disc player apparatus comprises a tray for supporting a disc, a loading motor having a motor shaft, and a driving part for moving the tray in more than one xds of motion by power derived from the loading motor. The driving part is rotatively mounted to the motor shaft.
Additional objects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one embodiment of the invention and together with the description, serve to explain the principles of the invention.


REFERENCES:
patent: 5123005 (1992-06-01), Kurosu
patent: 5172361 (1992-12-01), Urushibata et al.
patent: 5204850 (1993-04-01), Obata
patent: 5218593 (1993-06-01), Kaneo et al.
patent: 5386403 (1995-01-01), Morioka et al.
patent: 5513157 (1996-04-01), Saito et al.
patent: 5608705 (1997-03-01), Tanaka
patent: 5793729 (1998-08-01), Soga et al.

Affiliated with

Also associated with

Rating

Device for loading a tray down into a pick up disk player does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for loading a tray down into a pick up disk player, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for loading a tray down into a pick up disk player will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2572260