JPH04281260A - Disk loading mechanism - Google Patents

Abstract

PURPOSE:To constitute a release means, using a simple but infallible mechanism, to release the nipping of a disk held by a pair of rollers while the loading of the disk is completed, in a disk loading device that nips the disk with a pair of rollers and conveys the disk to a disk loading part. CONSTITUTION:The disk loading mechanism is so constituted that the nipping of the disk by rollers 15 and 16 is released using a cam member 28 as a release means, i. e., driven by the driving force of the cam member 28.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc loading mechanism applied to disc players and the like.

0002

2. Description of the Related Art For example, some automatic changer type disc players are designed to pull in a disc using rollers in order to automatically load the disc into a disc mounting section (drive mechanism section).

That is, as shown in FIG. 5, the disk D is sandwiched between a pair of rollers 1 and 2.
It is drawn into the disc player by the rotation of and 2 (
A) in the same figure, and then placed on the turntable 3 and ready for playback (performance) (B in the same figure). In this state, in order to prevent the rollers 1 and 2 from interfering with the rotation of the disk D, it is necessary to release the sandwiching state of the disk D between the rollers 1 and 2 as shown in the figure.

As a mechanism for releasing the disk from being held between the rollers, a structure as shown in FIG. 6, for example, has conventionally been used.

That is, in this mechanism, an upper roller 1 is pivotally supported on a fixed part, and a lower roller 2 is pivotally supported on an arm 5 that is pivotably supported on a fixed part so as to be rotatable in the vertical direction about a shaft 4. A toggle spring 6 is attached between the free end of the arm 5 and the fixed part. Gear 7 is on arm 5
is pivotally mounted, and this gear 7 meshes with a rack 8 disposed on the fixed part side.

When the gear 7 is rotated by a predetermined drive mechanism, the arm 5 rotates around the shaft 4, thereby causing the lower roller 2 to press against and separate from the upper roller 1. , the respective states are maintained by the force of the toggle spring 6.

[0007]

The conventional mechanism constructed in this manner has the problem of being difficult to construct and inefficient in terms of space because the drive source for the gear is mounted on the arm, which is a movable member. The present invention has been made in view of the above, and an object of the present invention is to provide a mechanism that has a simple structure and can reliably release the disc clamping state.

[0008]

[Means for Solving the Problems] In order to achieve the above-mentioned objects, the present invention provides a method for transporting an inserted disc to a disc loading section by clamping it between a pair of clamping means (rollers) that clamps the disc from above and below. a transporting means; a supporting means for supporting one of the pair of clamping means in the transporting means so as to be movable in a direction in which an inserted disk is clamped and in a direction in which the disc is released from clamping by the other clamping means; , a release means for releasing the clamping state of the disc by the pair of clamping means after the inserted disc reaches the disc mounting part, and the releasing means is provided at a substantially central position in the transport direction of the inserted disc by the transport means. The disc has a cam member disposed at the cam member, and when the cam member is driven, a releasing means is operated to release the disk from being held by the pair of holding means.

[0009]

[Function] The mechanism of the present invention having the above structure uses a cam member as a releasing means for releasing the disc from being held between the disks, so the structure is simpler than the conventional one and space efficiency is good. Because it is placed in the correct position, a well-balanced and stable release operation is performed.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4.

In the figure, reference numeral 10 indicates the entire mechanical section of the disc player, and reference numeral 11 indicates a base chassis, in which a disc drive mechanism (mechanical deck) 12 is arranged and fixed in the center of the base chassis 11. This disc drive mechanism 12 is a turntable 1 on which a disc is placed and mounted.
3. It has an optical pickup 14 for reading signals recorded on the disk. The disc D inserted into the disc player is transported to the disc drive mechanism 12 by the following transport means.

The front part of the base chassis 11 has a pair of upper and lower rollers 15 and 16 as disk clamping means, and a disk D is inserted between the pair of rollers 15 and 16 from the front.
When the rollers 15 and 16 are rotated with the disc D inserted, the disc D is drawn into the disc player.
The disc drive mechanism 12 is transported to the top of the turntable 13 .

The upper roller 15 is made of rubber and is rotatably supported between the front parts of both sides 11a and 11b of the base chassis 11, and the upper roller 15 receives the force of the motor 17 fixed to the base chassis 11. It is designed to be rotated by That is, the rotational force of the motor 17 is transferred from a worm 18 fixed to its rotating shaft via transmission gears 19 and 20 to a gear 2 attached to one end of the upper roller 15.
1, thereby driving the upper roller 15 to rotate.

On the other hand, the lower roller 16 is made of resin.
It is pivotally supported by a movable support frame 22 that is supported by the base chassis 11 so as to be able to rise and fall freely. That is, the movable support frame 22 is a U-shaped member that integrally includes arm portions 22a and 22b on both left and right sides and a front plate portion 22c that connects the arm portions 22a and 22b on both sides. The rear ends of the arms 22a and 22b are pivotally connected to the base chassis 11 via shaft pins 23 so as to be able to rotate in the vertical direction. A lower roller 16 is rotatably supported parallel to the roller 15.

The movable support frame 22 also has arm portions 22 on both sides.
A and 22b have horizontal plate portions 24a and 24b, respectively, and a compression coil spring 25 is inserted between the horizontal plate portions 24a and 24b and the bottom of the base chassis 11. The movable support frame 22 is urged to rotate in the upward direction by the elastic force of the spring 25, so that the lower roller 16 is always pushed up so as to come into pressure contact with the upper roller 15.

When the disk D is inserted from the front between the two rollers 15 and 16 and the upper roller 15 is rotated by the motor 17, the lower roller 16 also rotates to follow this, so that the disk D can be smoothly rotated. It is designed so that it can be drawn into the disc player.

The movable support frame 22 also has arm portions 2 on both sides.
A push plate 26 is connected and supported across the intermediate portions of 2a and 22b, and a chucking plate 27 facing the turntable 13 of the disk drive mechanism 12 is rotatably supported at the center of the push plate 26. ing.

In the apparatus of this embodiment constructed as described above, in a state where the disk D is conveyed to the disk drive mechanism 12 by the rollers 15 and 16, the roller 15
and 16 are provided with a release means for releasing the disc from being held between the discs and 16.

This release means is constructed as follows. A cam member 2 is provided at the front of the base chassis 11 at a substantially central position in the disk transport direction by the transport means, that is, located exactly between the arm portions 22a and 22b on both sides of the movable support frame 22.
8 is rotatably supported, and correspondingly, an engagement pin 29 is provided protruding from the rear side of the center portion of the front plate portion 22c on the movable support frame 22 side. The cam member 28 has a cam surface 28a on its outer periphery whose height changes continuously.
The engagement pin 29 of the movable support frame 22 is brought into contact with and engaged with the movable support frame 22.

This cam member 28 is rotatably driven by the motor 17 mentioned above. That is, the rotational force of the motor 17 is transmitted from the worm 18 to the lower end circumferential surface of the cam member 28 via transmission gears 30, 31, 32. The power is transmitted to the formed gear portion 33, thereby causing the cam member 28 to rotate.

In the gear mechanism for driving the cam member 28, the intermediate transmission gears 30, 31 are directly connected to the base chassis 1.
1, whereas the gear portion 3 of the cam member 28
The final stage transmission gear 32 that meshes with the transmission gear 32 is pivotally supported on an arm 34 that rotates around the pivot of the previous stage gear 31. That is, the rotation of this arm 34 causes the transmission gear 32 to
is configured to be moved in the direction of engagement with and disengagement from the gear portion 33 of the cam member 28.

This arm 34 is configured to be rotated by a plunger 35 fixed to the base chassis 11. That is, the sliding shaft 35a of this plunger 35 and the free end of the arm 34 are linked by an interlocking plate 36. Although the transmission gear 32 is normally separated from the gear portion 33 of the cam member 28, when the plunger 35 is energized, its sliding shaft 35
When a slides in the retracting direction, the arm 3 is moved through the interlocking plate 36.
4 is pulled and rotated, whereby the transmission gear 32 meshes with the gear portion 33 of the cam member 28, and the rotational force of the motor 17 is transmitted to the cam member 28.

Next, the operation of the apparatus of this embodiment constructed as described above will be explained. When the disk D is inserted from the front between the rollers 15 and 16 from the normal state shown in FIG. and is transported to a predetermined disk mounting section, that is, above the turntable 13 of the disk drive mechanism 12. At this time, the disk D is conveyed while being held horizontally by a guide section provided inside the push plate 26, although not shown.

When the disc D is completely drawn into the disc player in this way, the plunger 35
is activated, the rotational force of the motor 17 is also transmitted to the cam member 28, and when the cam member 28 is rotated in this way, its cam surface 28a touches the engagement pin 2 of the movable support frame 22.
9 is pressed downward continuously.

Therefore, the movable support frame 22 is rotated so as to be pushed down against the elastic force of the compression coil spring 25.
As a result, the lower roller 16 moves away from the upper roller 15, and the state in which the disc D is held between the rollers 15 and 16 is released. Also, this movable support frame 2
2, the push plate 26 also lowers integrally,
As a result, the chucking plate 27 presses down the disk D from above while the disk D is placed on the turntable 13, ie, the disk is chucked and the loading operation is completed (FIG. 4).

When the loading of the disc is completed in this manner, the disc is no longer held between the rollers 15 and 16, so that the disc D can be rotated without any hindrance and smooth playback operation can be performed. It will be done. Incidentally, when taking out the disk D from this state, the motor 17 may be rotated in the opposite direction.

In the apparatus of this embodiment constructed and operated as described above, the cam member 2 is used as a means for releasing the disk from being held between the rollers 15 and 16 for conveying the disk.
8, a reliable release operation can be performed with a simple configuration. In other words, since the disc clamp release means can be constructed without using a conventional difficult mechanism, it can be easily incorporated into the limited space inside the disc player, which means that the space efficiency is good and the device can be made smaller. This is something that can be easily handled.

Moreover, since the cam member 28 is arranged at the center position and has a structure that pushes down the center part of the movable support frame 22,
The movable support frame 22 is lowered in a well-balanced manner without twisting from side to side, so that the operation for releasing the disc sandwiching state is performed stably.

Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the configuration of this embodiment, but can take various embodiments.

[0030]

As described above, the present invention uses a cam member as a means for releasing the disc from being held by the holding means for transporting the disc, thereby simplifying the structure and improving space efficiency. Moreover, since the cam member is disposed at the central position, a well-balanced and stable release operation can be performed, which provides excellent practical effects not found in the prior art.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a partially cutaway plan view of the embodiment.

FIG. 3 is a longitudinal side view of the embodiment (state before disk insertion).

FIG. 4 is a longitudinal side view of the embodiment (disc loading completed state).

FIG. 5 is an explanatory diagram of an operation for releasing the disc clamping state during disc loading.

FIG. 6 is an explanatory diagram of a conventional example.

[Explanation of symbols]

D Disc 15, 16 Roller (clipping means) 22 Movable support frame (support means) 28 Cam member

Claims (1)

[Claims] Claims: 1. A conveying means for conveying an inserted disk to a disk loading section by pinching the inserted disk between a pair of pinching means that pinch the disk from above and below, and a conveying means for conveying the inserted disk to a disk loading section; supporting means movably supporting the disc in a direction in which the disc is clamped and in a direction in which the disc is released from clamping by the other clamping means; and the pair of clamping means after the disc inserted into the disc mounting section reaches the disc. and a release means for releasing the disc from being held between the disks, the release means having a cam member disposed at a substantially central position in the direction in which the inserted disk is conveyed by the conveyance means, and the cam member A disk loading mechanism characterized in that the disc loading mechanism is structured such that the releasing means is actuated by the drive of the pair of clamping means to release the disc from being held by the pair of clamping means.