JP2553834B2 - Day-scrolling mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a video disc, a compact disc,
The present invention relates to a disk loading mechanism for loading and unloading a carrier carrying a disk-shaped recording medium (hereinafter referred to as a disk) such as a record disk between a disk exchange position and a disk playback position.

(B) Conventional Technology Conventionally, there is known a disc clamp mechanism in which a disc clamper is provided at the tip of an arm pivotally supported at the rear end of a disc player and the arm is rotated to perform disc clamping when the disc is loaded. There is.

However, in such a device, a disc clamp mechanism is provided independently, and the mechanism is complicated because it is interlocked with the disc loading mechanism, and the number of parts is large, and the height of the disc player is small because the long arm is rotated. It had the drawback of not being able to do it.

(C) Problems to be Solved by the Invention An object of the present invention is to remedy the drawbacks of the above-mentioned conventional device, and a disc clamp which has a simple mechanism, a small number of parts, and a small height of a disc player. It is to provide a disc loading mechanism having a built-in mechanism.

(D) Means for Solving the Problems In order to achieve the above object, the disc loading mechanism of the present invention is provided with guide holes extending in the vertical direction with respect to the disc mounting surface of the turntable on both left and right sides. A sub-chassis and a pair of left and right rack plates that are driven in the front-rear direction and that include guide holes that are inclined with respect to the vertical direction,
A clamper holder that supports a disc clamper that presses the disc-shaped recording medium onto the turntable, and has protrusions that are commonly engaged with the guide holes of the sub chassis and the guide holes of the rack plate on both left and right sides. The carrier is movably supported in the front-rear direction and carries a disk-shaped recording medium, and the disk-shaped recording medium is carried in and out by the movement of the rack plate and the disk is clamped.

(E) Action By moving the rack plate in the front-back direction, the clamper holder that supports the carrier on which the disc is placed is moved to carry in and carry out the disc, and at the same time, it is provided in the clamper holder in the disc reproducing device. The disc clamper clamps the disc on the turntable.

(F) Embodiments Embodiments of the present invention will be described with reference to the drawings.

The disc player includes a turntable provided at the center, a disc reproducing mechanism, a carry for placing the disc,
An auto loading mechanism that moves the clamper holder that supports the carrier horizontally and vertically between the auto loading start position and the disc playback position, a disc clamp mechanism that is provided on the clamper holder to clamp the disc on the turntable, and is always closed by a spring. The front door is biased to the position.

<Schematic Operation> In FIG. 1, the carrier 6 on which the disk 8 is mounted is (a).
The figures show the states of the disc exchange position, (b) autoloading start position, and (c) disc playback position, respectively. First, the schematic operation of disc loading will be described.

When the eject key is pressed in the carry-storing state (state where the carry 6 is at the (c) disk playback position), the front door 17
Is opened and the carrier 6 is carried out to the (b) automatic loading start position. By pulling it out to the disc exchange position (a) by hand, after mounting the disc 8 on the carrier 6 at this position, the carrier 6 (b) When pushed to the auto loading start position, the auto loading mechanism is activated and the carrier 6 is retracted to the carry storage position (above the (c) disc playback position) and then lowered to the (c) disc playback position to play the disc. To start.

After the playback is finished, if the eject key is pressed again, the carry 6 will be automatically carried out to the (b) auto loading start position, so (a) manually pull it out to the disc exchange position and remove the disc 8 again (b) auto. By pushing to the loading start position, the auto loading mechanism is activated and the carrier is stored.

<Autoloading Mechanism> FIG. 2 is an exploded perspective view showing the clamper holder and the autoloading mechanism.

Both left and right sides of the sub-chassis 7 are vertically bent upward, and at the bent portions on both sides, L-shaped holes 7a composed of a horizontal portion and a vertical portion continuously provided below the rear end portion are formed in the front and rear respectively. There is.

Rack plates 11 are slidably supported in the front-rear direction outside the left and right bent portions of the sub-chassis 7, and are driven by synchronously fixed left and right synchro gears 14 to move in the front-rear direction in synchronization.

Each rack plate 11 is formed with a front and rear guide hole 11a consisting of a horizontal portion at the front end and an inclined portion that is continuously provided behind the horizontal portion and gradually rises.

The left and right sides of the clamper holder 23 supporting the disk clamper 31 on the lower center surface are vertically bent downward, and the front and rear two rollers 21 projecting on the outer surface of each of the bent portions are L-shaped of the sub chassis 7. The holes 7a and the guide holes 11a of the rack plate 11 are commonly engaged.

Therefore, when the left and right rack plates 11 move in the front-rear direction, the roller 21 (that is, the clamper holder 23) moves horizontally and vertically along the L-shaped hole 7a of the sub-chassis 7, as shown in FIG. .

The left and right synchro gears 14 that drive the rack plate 11 each have a flange portion 14a on the outside thereof, and the flange portions 14a regulate the position so that the lower portion of the rack plate 11 does not shift to the outside.

A one-way clutch consisting of a spring and a stopper is provided in a part of a driving force transmission mechanism that connects the synchro gear 14 and a drive motor (not shown), and the synchro gear 14 is always in a direction to carry out the rack plate 11. When the carrier 6 is pushed by an excessive force at the autoloading start position, the spring of the clutch absorbs the force and buffers it.

When the rack plate 11 is at the auto-loading start position, its drive section (not shown) pushes an auto-loading start switch (not shown) provided on the rear surface of the sub chassis 7 to stop the drive motor. When the carrier 6 is manually moved from the disk replacement position to the auto loading start position, the carry plate 6 is pushed further inward to move the rack plate 11 rearward and away from the auto loading start switch to start the drive motor. .

<Carry support mechanism> Three rollers 18a, 18b, 18c and a leaf spring 19 are provided inside the left and right bent portions of the clamper holder 23, and these rollers are formed on the left and right sides of the carrier 6 in the front-rear direction. The carrier 6 is engaged with the grooves 6b, and is supported by the clamper holder 23 so as to be movable in the front-rear direction.

When in the disc exchange position, the carrier 6 is supported by the two front rollers 18a and 18b, and when in the disc loading position from the autoloading start position, the carrier 6 is the rear two rollers. Supported by 18b and 18c.

When the carrier 6 moves from the disc replacement position to the auto loading start position, the protrusion of the leaf spring 19 engages with the engaging recess (not shown) of the roller groove 6b, so that the carrier 6 is held by the clamper holder 23. Is held at.

When the carrier 6 is pulled out forward from the automatic loading start position, the leaf spring 19 and the engaging recess of the roller groove are disengaged by pulling it forward with a certain amount of force, and then it can be pulled out easily.

<Disc Clamping Mechanism> As shown in FIG. 4, a clamp leaf spring 37 is provided on the lower surface of the center of the clamper holder 23, and a disc clamper 31 for clamping the disc 8 on the turntable is arranged below the clamp leaf spring 37. It is supported so that it can move a little in the direction.

On the top surface of the disc clamper 31, a steel ball 38
Is provided, the clamper holder 23 descends at the disc reproducing position and the disc clamper 31 abuts on the disc 8, and then the tip of the clamp leaf spring 37 abuts on the ball 38, whereby the disc clamper 31 Holds the disk 8 in pressure contact with the turntable by the urging force of the clamp leaf spring 37.

At this time, the disk clamper 31 is pressed by the ball 38 so as to be tiltable and tilts accurately following the surface of the turntable 2, so that the disk 8 can be pressed against the turntable with a uniform force.

<Movement of Clamper Holder> FIGS. 3 and 4 are a side view and a front view (partially sectional view) showing the movement of the clamper holder 23.

As shown in FIG. 3 (a), when the rack plate 11 is at the frontmost position, the roller 21 guides the guide hole 11a of the rack plate 11.
L-shaped hole of the uppermost part (close to) and the sub chassis 7
Positioned by the horizontal portion of 7a, when the rack plate 11 moves backward, the roller 21 also moves horizontally backward.

As shown in FIG. 6B, the roller 21 has an L-shaped hole.
When it reaches the vertical portion of 7a, the horizontal movement is stopped, and when the rack plate 11 further moves backward, it descends along the vertical portion of the L-shaped hole 7a and finally reaches the horizontal portion of the guide hole 11a and stops.

That is, a clamper holder that supports the carrier 6.
23 moves horizontally from (a) automatic loading start position to (b) carry storage position, and then vertically (c)
Move down to the disc playback position.

As shown in FIG. 4, when the clamper holder 23 reaches a position slightly above the disc reproducing position, the lower surface of the disc 8 on the carrier 6 abuts on the turntable 2, and then the disc clamper 31 moves the disc 8 to the disc 8. When the clamper holder 23 descends, the clamp leaf spring 37 abuts on the ball 38 and its urging force is applied to the disc clamper 31 to clamp the disc 8 on the turntable.

When the disc is transported, the operation which is completely opposite to the operation described above is performed.

(G) Effect of the Invention As described above, the disc loading mechanism of the present invention includes a sub-chassis provided with guide holes extending on the left and right sides in the vertical direction with respect to the disc mounting surface of the turntable, and with respect to the vertical direction. Support a pair of left and right rack plates that are driven in the front-rear direction, and disk clampers that press the disk-shaped recording medium onto the turntable, and guide holes of the sub-chassis and rack plates on both left and right sides. It consists of a clamper holder each having a protrusion that is commonly engaged with the guide hole, and a carrier that is movably supported by the clamper holder in the front-rear direction and on which a disk-shaped recording medium is placed. Drive the clamper to load and unload the disk-shaped recording medium and clamp the disk. By doing so, the mechanism is simple and the number of parts is small compared to the conventional device equipped with an independent disc clamp mechanism, the clamper holder does not have a risk of deviating and the operation is reliable, and the vertical movement of the carry and clamper is integrated. Since the optimum clamping operation can be performed and the disk clamping mechanism can be moved in a horizontal state, the long arm is rotated to perform the clamping operation. The height of the disc player can be made smaller than that of.

[Brief description of drawings]

FIG. 1 ... Perspective view of a disc player using a disc loading mechanism of the present invention FIG. 2 ... Exploded perspective view of a clamper holder and auto-loading mechanism FIG. 3 ... Side view showing movement of the clamper holder along with movement of rack plate Fig.4: Front view showing movement of carry and disc clamper (partial cross-sectional view) 2 ... Turntable, 6 ... Carry 7 ... Sub chassis, 7a ... L-shaped hole 8 ... Disc 11 ... Rack Plate, 11a …… Guide hole 21 …… Roller 23 …… Clamper holder 31 …… Disc clamper 37 …… Clamping leaf spring, 38 …… Ball

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masao Kase 4-2610 Hanazono, Tokorozawa-shi, Tokorozawa Plant, Pioneer Co., Ltd. (72) Masao Abe 4-2610 Hanazono, Tokorozawa-shi, Tokorozawa Plant, Pioneer (56) References JP-A-57-88560 (JP, A) JP-A-58-212654 (JP, A) JP-A-58-85966 (JP, A) JP-A-59-188870 (JP, A) Actual development Sho-59 -125751 (JP, U) Actual development Sho 59-99251 (JP, U)

Claims (1)

(57) [Claims] 1. A sub-chassis having guide holes extending on the left and right sides in a direction perpendicular to a disk mounting surface of a turntable, and (b) a guide hole inclined with respect to the vertical direction. Supports a pair of left and right rack plates driven in the front-back direction, and (c) a disk clamper that presses the disk-shaped recording medium onto the turntable, and is common to the left and right sides of the sub-chassis guide hole and the rack plate guide hole. A disk loading mechanism comprising a clamper holder each having a protrusion that engages with each other, and (d) a carrier that is movably supported by the clamper holder in the front-rear direction and carries a disk-shaped recording medium.