JPH0627018Y2 - Disc loading device for optical disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a disc loading device for an optical disc player.

[Prior Art] In a conventional disc loading device for an optical disc player, a disc feed roller, a motor for driving the disc feed roller, and a gear train are provided on a roller lever, the roller lever is rotatably supported by a chassis, and a disc pressure contact side is provided by a spring. The disk was loaded by energizing the motor and rotating the motor.

When the disc feed roller is separated from the disc during a performance, an arc-shaped rack gear is driven by a plunger to rotate a meshing roller lever with one gear of the gear train.

[Problems to be Solved by the Invention] In the above-mentioned conventional device, it is necessary to increase the rigidity of the roller lever in order to apply a rotational force to only one end of the roller lever. There was a case where the pressing force of was not uniform.

The present invention was made in view of the above points,
It is therefore an object of the present invention to provide a disc loading device for an optical disc player, which raises and lowers a roller while keeping it stable and horizontally, and which does not cause unevenness of the pressure force of the roller to be pressed against the disc.

Another object of the present invention is to simplify the mechanism by driving a mechanism for fixing the mechanical deck to a fixed state or a floating state, a rotation drive mechanism for the disc feed roller, and a lifting mechanism for the disc feed roller with one motor. An object of the present invention is to provide a disc loading device for an optical disc player.

[Means for Solving the Problems] A disk loading device for an optical disk player according to the present invention includes a first cam plate that is reciprocally driven by a motor, and reciprocally driven by first cam plates that are disposed on the left and right side surfaces via a lever. Second and third cam plates and a roller lever that supports the disc feed roller and is rotatably supported by the chassis.
The disc feed roller is moved up and down by a cam provided on the cam plate.

Further, in the disc loading device of the optical disc player, a planetary gear that meshes with the sun gear is rotatably supported on an arm that is rotatably supported coaxially with a sun gear that is rotationally driven by a motor, and is fixed to the arm. The leaf spring is pressed against the planetary gear to rotate the arm by a frictional force, and the rotation selects the two gears meshing with the rack provided on the first cam plate and the planetary gear. The second and third cam plates make the mechanical deck fixed or floating.

Further, in the disc loading device of the optical disc player, one gear of a gear train for driving the disc feed roller is supported coaxially with the roller lever.

[Operation] According to the disc loading device of the optical disc player of the present invention, the disc feed roller is raised and lowered by the second and third cam plates arranged on the left and right side surfaces, so that the roller is stably raised and lowered horizontally. There is no uneven pressing force of the roller to the disc.

Further, since one gear of the gear train that drives the disc feed roller is supported coaxially with the roller lever, the position of the gear does not change even when the roller lever rotates, and the motor that drives the gear is moved from the roller lever. They can be placed separately and can also be used to drive other mechanisms.

[Embodiment] A disk loading device for an optical disk player according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In the figure, 1 is a motor, which is fixed to a chassis 2.

The gear 3 and the worm 20 are fixed to the rotating shaft of the motor 1.

The gear 3 meshes with a gear 4 fixed to a shaft 5 rotatably supported by the chassis 2.

A gear 6 is fixed to the other end of the shaft 5.

Reference numeral 11 denotes a roller lever, which is a shaft 1 erected on the chassis 2.
It is rotatably supported by 2 and 12a.

The roller lever 11 rotatably supports a shaft 14 that supports a disc feed roller 15 via bearings 13, 13.

The gear 7 is rotatably supported by a shaft 12, and the gears 8 and 9 are rotatably supported by shafts erected on a roller lever 11.

The gears 7, 8 and 9 have a small gear and a large gear meshing with each other to form a gear train, and transmit the rotation from the gear 6 to the gear 10 fixed to the shaft 14.

The arm 21 is rotatably supported by a shaft 23 provided upright on the chassis 2.

The gear 24 is rotatably supported by the shaft 23, and the gear 2
Worm wheel No. 4 meshes with worm 20 and gear 24
The small gear is engaged with a large gear of a gear 25 rotatably supported by a shaft 26 provided upright on the arm 21.

Reference numeral 32 is a leaf spring, which is fixed to the arm 21 and whose tip is the gear 2
It is pressed against the side surface of No. 5.

Reference numeral 22 denotes a lever, which is moved into and out of the rotation path of the arm 21 by energizing or deactivating a solenoid (not shown).

Gears 27 and 28 are rotatably supported by shafts 29 and 30, which are erected on the chassis 2, respectively, and the respective large gears are brought into mesh with the small gears of the gear 25 by the rotation of the arm 21.

Reference numeral 31 is a first cam plate, which is slidably supported by the chassis 2.

The rack 31b provided on the first cam plate 31 meshes with the small gears of the gears 27 and 28.

Reference numeral 33 denotes a second cam plate, which has guide grooves 33b, 33b provided therein and pins 2a, which are erected on the chassis,
2a is inserted and slidably supported by the chassis 2.

The shaft 14 is inserted into a cam groove 33a provided in the second cam plate 33, and the disc feed roller 15 is moved up and down by the movement of the second cam plate.

A mechanical deck 33 is supported in a floating state on the chassis 2 by a damper and a spring (not shown).

A shaft 35a erected on the mechanical deck 35 is inserted into a hole 33c of the second cam plate, and the mechanical deck 35 is floated or fixed by the movement of the second cam plate.

A third cam plate 34 is slidably supported by the chassis 2 like the second cam plate 33, and moves to cooperate with the second cam plate to float or fix the mechanical deck 35. Then, the disc feed roller 11 is moved up and down.

The levers 37 and 38 are rotatably supported by pins 39 and 40 provided upright on the chassis, respectively.

Pins 37a, 37b and 37 erected on the lever 37
c respectively engages with the groove 33d of the second cam plate, the cam groove 31a of the first cam plate and the elongated hole 38b of the lever 38.

The pin 38a provided upright on the lever 38 is engaged with the groove 34d of the third cam plate.

The embodiment is configured as described above, and its operation will be described next.

In the state before the disc is loaded, the second and third cam plates are at the rear position as shown in the figure, the disc feed roller 15 is raised, and the mechanical deck 35 is fixed.

The arm 21 is in the intermediate position and the gear 25 does not mesh with the gear 27 or 28.

When the motor 1 rotates in the loading direction, the disc feed roller 15 rotates counterclockwise and feeds the disc into the device while pressing it against a guide plate (not shown).

At this time, the gear 24 rotates clockwise and applies a clockwise rotating force to the arm 21 by a frictional force, but the arm 21 is restricted by the lever 22 and does not rotate.

When the end of disk loading is detected by a sensor (not shown), a solenoid (not shown) is urged, the lever 22 retreats from the rotation path of the arm 21, and the arm 21
Rotates clockwise, the gear 25 and the gear 27 mesh with each other, and the gear 27 rotates clockwise.

The gear 27 feeds the first cam plate 31 to the right, and the first cam plate 31 moves the lever 3 through the cam groove 31a.
Rotate 7 counterclockwise.

The lever 37 rotates the lever 38 clockwise through the pin 37c.

Lever 37 and lever 38 are pins 37a and 3 respectively.
The second cam plate 33 and the third cam plate 34 are advanced from the retracted position shown in the figure via 8a.

Then, the second cam plate 33 and the third cam plate 34 lower the disc feed roller to separate it from the disc, and make the mechanical deck float.

Although not shown, the clamp mechanism is driven by the above operation of the second cam plate to clamp the disc on the turntable.

In this way, the disc is ready for performance.

When the disk is finished playing, the motor is rotated in the opposite direction to the loading direction, the disk feed roller is rotated clockwise, and the gear 24 is rotated counterclockwise.

The gear 24 rotates the arm 21 counterclockwise to move the gear 2
5 comes into mesh with the gear 28.

The gear 28 feeds the first cam plate 31 to the left, and the first cam plate 31 retracts the second and third cam plates 33 and 34 via the levers 37 and 38.

When the gear 28 feeds the first cam plate 31 to the left end, the gear 28 is disengaged from the rack 31b and the first cam plate stops, but the disc feed roller 15 continues to rotate.

When the second and third cam plates 33 and 34 are retracted, the clamp mechanism is deactivated, the mechanical deck is fixed, and the disc feed roller is pressed against the disc to feed the disc.

The embodiment is configured as described above, but the invention is not limited to this. For example, if the cam groove of the third cam plate has a reverse slope to the second cam groove 33a, the second and third cam plates are formed. Are driven in mutually opposite directions, and it is possible to use only one lever for driving them.

[Effect of the Invention] According to the disk loading device of the optical disk player of the present invention, since the disk feed roller is vertically moved, the disk feed roller is uniformly pressed onto the disk.

Further, since the disc feed roller, the disc feed roller elevating mechanism and the mechanical deck fixing mechanism are driven by one motor, the mechanism is simplified and the cost is reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a disc loading device of an optical disc player which is an embodiment of the present invention, and FIG. 2 is a side view showing the same embodiment except a chassis. 1 ... Motor, 2 ... Chassis, 2a ... Pin, 3,4 ... Gear, 5 ... Shaft, 6, 7, 8, 9, 10 ... Gear, 11 ... Roller lever, 12, 12a ... Shaft, 13 ... Bearing, 14 …axis,
15 ... Disc feed roller, 20 ... Worm, 21 ... Arm, 22 ... Lever, 23 ... Shaft, 24 ... Gear, 25 ... Gear, 26 ... Shaft, 27, 28 ... Gear, 29, 30 ... Shaft, 3
DESCRIPTION OF SYMBOLS 1 ... 1st cam plate, 31a ... Cam groove, 31b ... Rack, 32 ... Leaf spring, 33 ... 2nd cam plate, 33
a ... Cam groove, 33b ... Guide groove, 33c ... Hole, 33d ...
Groove, 34 ... Third cam plate, 34d ... Groove, 35 ... Mechanical deck, 35a ... Shaft, 37, 38 ... Lever, 37a,
37b, 37c, 38a ... Pin, 38b ... Long hole, 39,
40 ... axis,

Claims (3)

[Scope of utility model registration request] 1. A first cam plate which is reciprocally driven by a motor, second and third cam plates which are arranged on left and right side faces and are reciprocally driven by a first cam plate through a lever, and a disc feed roller. And a roller lever that is rotatably supported by the chassis and that raises and lowers the disc feed roller by cams provided on the second and third cam plates. 2. A planetary gear meshing with the sun gear is rotatably supported on an arm rotatably supported coaxially with a sun gear rotatably driven by a motor, and a leaf spring fixed to the arm is provided. The arm is rotated by being pressed against the planetary gear by a frictional force, and the two gears meshing with the rack provided on the first cam plate and the planetary gear are selectively meshed by the rotation. 2. The disc loading device for an optical disc player according to claim 1, wherein the mechanical deck is configured to be in a fixed state or a floating state by the second and third cam plates. 3. A gear train for driving a disc feed roller.
3. Two gears are supported coaxially with the roller lever.
Disc loading device for optical disc player.