JP2602616Y2 - Disc loading device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk loading device for pulling in plural types of disks having different disk diameters according to the disk diameter, and more particularly, to restricting the disks to predetermined positions according to the disk diameter. The present invention relates to a disk loading device having an improved disk stopper.

[0002]

2. Description of the Related Art Generally, a disc player has a disc.
The drive unit up to the top of the drive unit.
To the turntable provided in the drive unit
A drop-in disk loading device is provided.
Recently, several types of discs with different disc diameters
Disc players that can play back
Some disc players have different disc diameters.
Need to be set in the center of the turntable
There is. Therefore, it is not used for this kind of disc player.
Disk loading device
Depending on the loading position of the disc, ie the disc
Is required to be able to change the retraction position of
Have been. An example of such a disk loading device
Is shown in FIG. This disc loading device uses a CD
8cm CD and 12c, which are used for players
This is a device for drawing mCD to a predetermined position.

A clamp arm 22 is attached to a chassis (not shown) so as to be rotatable in a vertical direction, and is configured to drop a disk pulled into a predetermined position onto a drive unit. A guide groove 23 is formed at the center of the clamp arm 22 along the loading direction of the disk. A rectangular block 24 is slidably mounted in the guide groove 23, and a disk stopper 25 is fixed to the lower surface of the block 24. The disk stopper 25 has a symmetrical shape, and regulates an 8 cm CD at a front position (a position shown in FIG. 7) and a 12 cm CD at a rear position. At both ends of the disc stopper 25, wall portions 25a that contact the disc are provided. The wall portion 25a is for positioning the disk at the center of the disk stopper 25 when the left and right wall portions 25a simultaneously contact the disk. A stopper arm 26 is mounted above the disk stopper 25. Lock means (not shown) is engaged with the stopper arm 26. As the locking means, there are mechanical means and means utilizing electric action.

In the disk loading apparatus having the above-described configuration, when an 8 cm CD is inserted, the locking means locks the stopper arm 26, and the disk stopper 25 is at the front position. Therefore, the 8 cm CD into which the disc stopper 25 at the front position is inserted is regulated.

When a 12 cm CD is inserted, the locking means performs a releasing operation, the stopper arm 26 becomes rotatable, and the disk stopper 25 becomes slidable in the loading direction. Therefore, the block 24 slides in the loading direction along the guide groove 23 by the loading force of 12 cm CD, and the disk stopper 25 slides to the rear position. Then, the 12 cm CD into which the disc stopper 25 at the rear position is inserted is regulated. Thus, the disc stopper 25 can selectively pull in the 8 cm CD and the 12 cm CD to a predetermined position.

[0006]

By the way, in a disk player corresponding to a plurality of types of disk diameters, the width of the disk insertion opening is set slightly larger than the diameter of the largest diameter disk. For this reason, the width of the disc insertion opening of the CD player adopting the above-described conventional example is wider than 12 cm, and the 12 cm CD may enter the player while being shifted to one side. As a result, the 12 cm CD sometimes came into contact with only one side of the disc stopper 25. In this case, there are the following problems. That is, the temporarily inserted 12 cm CD is inserted into the disc stopper 2.
5 is in contact with only the right wall 25a, and the left wall 25a
Means that the gap g is generated, the disc stopper 2
7, a moment force in the counterclockwise rotation direction in FIG. Therefore, the corner portion of the side edge of the block 24 strongly contacts the side portion 23a of the guide groove 23, and a frictional force is generated between the block 24 and the guide groove 23, so that the disk stopper 25 does not slide. When the 12 cm CD abuts on only one side of the disc stopper 25, the disc stopper 25 itself interferes with the loading operation of the 12 cm CD.

Moreover, since the outer curvature of the 12 cm CD is larger than that of the 8 cm CD, once the player enters the player in a one-sided state, the wall 25 a hitting the 12 cm CD has
It is very difficult to move the cmCD to the center side even when trying to move it to the center side. These factors, together with variations in the dimensions of the members, have led to a disc loading defect of 12 cm CD. For this reason, conventionally, it is necessary to design an apparatus in consideration of variations in member dimensions and the like, and high accuracy is required in the design stage, which has been a problem.

As described above, in the prior art, when the inserted state of the disk shifts right and left and hits the disk stopper, a moment force acts to generate a frictional force between the disk stopper and the guide groove, and the disk stopper slides. Operation is hindered. Therefore, when the disc to be regulated is pulled in at the position after the disc stopper has performed the sliding operation, a loading failure of the disc may occur, and the reliability may be reduced. Therefore, high-precision device design is indispensable to prevent this problem, which is economically disadvantageous.

The present invention has been proposed in order to solve such a problem, and its object is to provide a method without taking into account the insertion state of the disk and variations in member dimensions.
An object of the present invention is to provide a disk loading device that can ensure a stable loading operation and exhibit excellent reliability.

[0010]

Means for Solving the Problems To solve the above problems,
In order to achieve this, the invention according to claim 1 is used for loading a disc.
Guide groove in the direction, and slide along this guide groove.
A disk stopper that can be loaded,
Disk drives multiple types of discs according to the disc diameter.
Disc row that regulates to a predetermined position along the loading direction
In the loading device, load the disk stopper
Equipped with a rotating means capable of rotating in the
And features.

The invention according to claim 2 is characterized in that a disk diameter detecting means for detecting a disk diameter is provided, and the sliding operation of the disk stopper is controlled by the disk diameter detecting means. .

[0012]

According to the first aspect of the present invention, when the disk comes into contact with only one side of the disk stopper and the disk stopper receives a moment force, the disk stopper is rotated by the operation of the rotating means, and the moment force is released. Absorb. Therefore, no frictional force is generated between the guide groove and the disk stopper, and the disk stopper can smoothly slide to a predetermined position.

In the invention according to the second aspect of the present invention, the reliability of the disk loading device for discriminating the disk size and loading the disk is determined by combining the disk stopper for reliably performing the sliding operation with the disk diameter detecting means. Can be enhanced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [Configuration of the present embodiment] An embodiment of the present invention will be specifically described below with reference to FIGS. 1 is a plan view of the present embodiment, FIG. 2 is a plan view of a disk stopper used in the present embodiment, and FIGS. 3 and 4 are plan views of main parts of the present embodiment. This embodiment is a disk loading apparatus adopted in a CD player and for loading a 12 cm CD and an 8 cm CD to a predetermined position.

In the figure, reference numeral 11 denotes a chassis of a CD player, 1
Reference numeral 2 denotes a disk insertion opening 12 formed at a front edge of the chassis 11. The disc insertion slot 12 is opened so that a 2 cm CD can be inserted. The clamp arm 1 is attached to the chassis 11 so as to be rotatable vertically. A guide groove 2 is formed in the center of the clamp arm 1 along the loading direction. A disc stopper 3 is slidably mounted in the guide groove 2. The disc stopper 3 has a symmetrical shape and regulates an 8 cm CD at a front position (the position shown in FIGS. 1 and 3) and a 12 cm CD at a rear position (a position shown in FIG. 4). At both ends of the disk stopper 3, there are provided wall portions 3a that contact the disk. The wall portion 3a is set so that when the left and right wall portions 3a simultaneously contact the disk, the disk is positioned at the center of the disk stopper 3. Disc stopper 3
An engagement pin 3b protruding upward is provided at the center of.

A large-diameter pin 4 and a small-diameter pin 5 are provided as means for rotating the disk stopper 3 on the front side and the back side of the center of the lower surface of the disk stopper 3. The large-diameter pin 4 is fitted in the guide groove 2, and serves as a rotation center when the disc stopper 3 rotates. The small-diameter pin 5 has a diameter of about 1/3 of the width of the guide groove 2. When the disk stopper 3 rotates, the small-diameter pin 5 comes into contact with the side 2a of the guide groove 2 to rotate the disk stopper 3. It is a pin that regulates movement.

The disk loading device of the present embodiment is provided with a disk size discriminating mechanism. This disc size discriminating mechanism includes a front arm 7 serving as a disc diameter detecting means, a stopper arm 8 for sliding the disc stopper 3 in the loading direction, and a cam plate 9 for restricting the operation of the stopper arm 8. The front arm 7 is rotatably arranged on the right side edge of the chassis 11 about the support shaft 7a. At the front end of the front arm 7, a contact pin 7b that contacts the disk, at the middle, a spring 7c that urges the front arm 7 in the counterclockwise rotation direction in FIG. Pressing portions 7d for pressing the portion 9 leftward are provided respectively.

The stopper arm 8 is disposed so as to be rotatable above the disk stopper 3 around a support shaft 8a, and has an engagement groove 8c at the tip end for engaging with the engagement pin 3b of the disk stopper 3. Is formed. A cam groove 8b is formed at an intermediate portion of the stopper arm 8, a first restricting portion 81b is provided at a front end of the cam groove 8b, and a second restricting portion 82b is provided at a rear end of the cam groove 8b. ing. The cam plate 9 is disposed close to the stopper arm 8, and a cam pin 9a engaging with the cam groove 8b on the left end and a pressed portion abutting on the pressing portion 7d of the front arm 7 on the right end. 9b are provided respectively.

[Operation of this embodiment] (1) Pulling-in operation of the disk In the disk loading device having the above-described configuration, in the normal state, the cam pins 9a of the cam plate 9 are located at the first restricting portions 81b of the cam grooves 8b. Thus, the disc stopper 3 is restricted to the front position (the state shown in FIG. 3). When an 8 cm CD is inserted from this state, the disc stopper 3 at the front position regulates the 8 cm CD. Also 12cm
When a CD is inserted, the contact pin 7 of the front arm 7
b corresponds to the edge of the 12 cm CD. With the insertion of the 12 cm CD, the front arm 7 rotates around the support shaft 7a in the clockwise direction in FIG.
d pushes the pressed portion 9b of the cam plate 9 to the left.

As a result, the cam plate 9 moves to the left,
The cam pin 9a comes off the first restricting portion 81b of the cam groove 8b. Therefore, the stopper arm 8 can rotate, and the disk stopper 3 can slide in the loading direction. As a result, the large-diameter pin 4 and the disc stopper 3 slide in the loading direction along the guide groove 23 by the loading force of 12 cmCD. Along with the slide of the disk stopper 3, the stopper arm 8 is also shown in FIG.
Rotating in the counterclockwise direction, the cam pin 9a moves along the cam groove 8b and enters the second restricting portion 82b. At this time, the disc stopper 3 has been slid to the rear position, and the cam plate 9 regulates the disc arm 8 at that position, and the disc arm 8 regulates the disc stopper 3 to the rear position (the state of FIG. 4). The disc stopper 3 at the rear position regulates the 12 cm CD. As described above, the disc stopper 3 can selectively pull in the 8 cm CD and the 12 cm CD to a predetermined position.

(2) When a disc is inserted in a one-sided state When a 12 cm CD is inserted in a one-sided state from a disk insertion slot 12, the 12 cm CD abuts only on one side wall 3 a of the disk stopper 3, and the disk stopper 3 Receive moment force. At this time, the disc stopper 3 rotates about the large-diameter pin 4 and the 12 cm CD
Abut. Therefore, the disc stopper 3 and the guide groove 2
The disc stopper 3 smoothly slides to the rear position without generating frictional force between the side 2a of the disc and the 12cm CD abuts on both wall sections 3a, thereby guiding the CD reliably. be able to.

According to the present embodiment as described above, 12 cm
Even if the CD is inserted to one side, the loading operation can be performed reliably, and without having to perform high-precision device design in consideration of variations in member dimensions, etc.
A stable loading operation can be ensured. As a result, the reliability as a disk loading device is improved. Further, in the present embodiment, the reliability of the disk size determination mechanism can be enhanced by incorporating the disk stopper 3 that reliably performs the sliding operation into the disk size determination mechanism.

[Other Embodiments] If the diameter of the pin 4 is smaller than the guide groove 2, the pin 5
May be the same as the pin 4. Further, the present invention is not limited to the above-described embodiment, but also includes an embodiment having the following disk stopper. The disk stopper 13 shown in FIG. 5 is integrally provided with a block 14 having a water droplet shape in plan view. This block 14
Is fitted in the guide groove 2 with the long diameter portion on the front side. According to the embodiment having such a disk stopper 13, when the disk stopper 3 rotates, the block 1
Since the entire side edge portion 4 abuts on the side portion 2a of the guide groove 2, the sliding operation can be stably performed while the disk stopper 13 is rotated.

The disk stopper 15 shown in FIG.
Is a rectangular block 1 that is rotatable about a support shaft 16a.
The block 16 is fitted in the guide groove 2. Such a disk stopper 15
In the embodiment having the disk stopper 1, the side edge of the block 16 fitted in the guide groove 2 is set to be long.
The operability in the sliding operation of No. 5 can be improved. In this case, if the cross section of the block 16 is H-shaped and the contact area with the guide groove 2 is reduced, a smoother operation becomes possible.

[0025]

As described above, according to the present invention, the insertion state of the disk can be achieved by a very simple structure in which the disk stopper for regulating the disk at a predetermined position is provided with a rotating means for rotating the disk stopper. It is possible to provide a disk loading device that can ensure a stable loading operation and exhibit excellent reliability without taking into account variations in the size of components and members.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a plan view of a disk stopper according to the embodiment.

FIG. 3 is a plan view of a main part of the embodiment (in a state where a disk stopper is at a front position).

FIG. 4 is a plan view of a main part of the embodiment (in a state where a disk stopper is at a rear position).

FIG. 5 is a plan view of a disk stopper according to another embodiment of the present invention;

FIG. 6 is a plan view of a disk stopper according to another embodiment of the present invention.

FIG. 7 is a plan view of a main part of a conventional disk loading device.

[Explanation of symbols]

 1 Clamp Plate 2 Guide Groove 2a Side 3,13,15 Disc Stopper 3a Wall 3b Engagement Pin 4 Large Diameter Pin 5 Small Diameter Pin 7 Front Arm 7a Support Shaft 7b Contact Pin 7c Spring 7d Pressing Part 8 Stopper Arm 8a Support Shaft 8b Guide groove 8c Engagement groove 9 Cam plate 9a Cam pin 9b Pressed portion 11 Chassis 12 Disk insertion port 14 Water drop type block 16 Block 16a Support shaft

Claims (2)

(57) [Scope of request for utility model registration] 1. A guide groove in a loading direction of a disc.
And a disk slidable along this guide groove.
A disk stopper, and the disk stopper
Multiple types of discs can be loaded in the loading direction according to the
For disk loading devices that regulate to a predetermined position along
Oite, disk loading apparatus characterized by comprising a rotation means for enabling rotation of said disk stopper against the loading direction. 2. A disk according to claim 1, further comprising a disk diameter detecting means for detecting a disk diameter, wherein said disk diameter detecting means controls a sliding operation of said disk stopper. Loading device.