JPH0753176Y2 - Disc changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a disc changer that accommodates a plurality of discs.

(Prior Art) Some audio devices use digital signals to improve sound quality and the like. This includes, for example, a disc-shaped disc in which sound is digitized and recorded, that is, a compact disc player (CD player) for reproducing a compact disc (CD), and a disc-shaped disc in which sound and video are digitized and recorded. That is, a compact disc video player (CDV player) for reproducing a compact disc video (CDV) can be used.

Now, these CD players, CDV players and the like have basically the same reproduction system, and one player can reproduce these various discs as they are.

By the way, some players of this type use a disc changer consisting of a plurality of disc trays and a disc case to automatically and continuously reproduce a plurality of discs in an alternating manner.

FIG. 8 shows a perspective view of a main part of a disc reproducing device for reproducing a plurality of discs.

The figure shows a disc reproducing apparatus provided with a disc changer 8.

This device is composed of a chassis 1 and a panel 2,
On the chassis 1, a disc turntable portion 3, a turntable portion raising / lowering motor 4, a turntable portion raising / lowering gear 5, and a disc changer 8 are arranged. The disc turntable unit 3 is a device for rotationally driving a disc housed in the disc changer 8. The turntable portion raising / lowering motor 4 and the turntable portion raising / lowering gear 5 are connected to the disc turntable portion 3
Is a device for moving up and down in the direction of arrow 3a. With this device,
The disc is driven to rotate while the disc turntable portion 3 is fully raised.

The panel 2 has an operation part 6 and a disc changer insertion hole 7
Is provided. The operation portion 6 is a portion provided with a switch or the like (not shown) for performing a reproducing operation and a fast-forward operation of the apparatus. The disc case insertion port 7 is a hole provided for inserting the disc changer 8 in the direction of arrow 7a so that the disc changer 8 can be inserted and removed.

FIG. 9 shows a perspective view of the disc changer 8.

The disc changer 8 includes a disc case 9 and a disc tray 10.

The disc case 9 has an opening 11 at one end thereof, and the opening 11 is oriented toward the turntable portion 3 when inserted into the disc reproducing apparatus as shown in FIG. A pair of left and right cutouts 12 are provided in the upper and lower portions of the opening 11. Furthermore, inside the disk case 9,
A plurality of ribs 13 are provided from the opening 11 toward the inside of the case 9.

On the other hand, the disc tray 10 is provided at its central portion with a concave accommodating portion 16 capable of accommodating a large-diameter disc 15 having a diameter of 12 cm, for example, and the accommodating portion 16 is provided with an insertion hole 17. ing. The turntable portion 3 (FIG. 8) is inserted into the insertion hole 17 from below in the direction of the arrow 3b. Further, slide portions 18 to be fitted between the ribs 13 of the disc case 9 are provided on the left and right edges of the disc tray 10. A pair of left and right cutouts 19 is provided at the front end of the disc tray 10. The notch 19 is located at a position corresponding to the notch 12 provided in the opening 11 of the disc case 9, and has a pair of arms 19a as indicated by broken lines in the figure.
Thus, only the disc tray 10 is grasped from the disc case 9 in the arrow 10a direction or inserted in the arrow 10b direction.

FIG. 10 shows a cross-sectional view of the main part (cross section taken along the line AA in FIG. 8) of the disc reproducing apparatus.

The figure shows a vertical cross-sectional view of the disc turntable portion 3 and the disc changer 8.

In the figure, the disc turntable unit 3 is composed of a turntable motor 20, a turntable 21, and a clamper 22. Above the turntable motor 20, one disc tray 10 is pulled out from the disc case 9 in the direction of the arrow 10a and stands still at a fixed position, as described above. The large-diameter disc 15 accommodated in the disc tray 10 is composed of a turntable 21 and a turntable motor.
20 rises in the direction of arrow 3b from the position indicated by the broken line in the figure, and is lifted upward and pressed against the clamper 22. The clamper 22 is fixed to a panel or the like provided above the disc turntable portion 3 together with a reproducing head (not shown). The large diameter disc 15
After being pressed against the clamper 22, turntable motor
The rotation starts with the rotation of 20. As a result, the disc can be reproduced. In the disc case 9 of the disc changer 8, for example, three disc trays 10 are stacked and accommodated. Therefore, according to the procedure described above, one of the disc trays 10 is selected, automatically pulled out in the direction of the arrow 10a, and the reproduction is repeated.

Fig. 11 shows a disc tray containing a large-diameter disc 15.
A top view of 10 of the more realistic ones is shown.

The figure shows a disk tray 10 having the same function as that described in FIG.

As shown in the figure, the large-diameter disc 15 is accommodated in the accommodating portion 16 of the disc tray 10 in a fixed posture. The tray is also provided with a pair of left and right symmetrical cutouts 19 and slides 18. The slide portion 18 has a cutout portion 18a in the longitudinal direction. When the disc tray 10 is fitted between the ribs 13 of the disc case 9 (FIG. 9) in this state, the outer peripheral portion of the large-diameter disc 15 is projected to the missing portion 18a of the slide portion 18, so that the disc case It is held by being sandwiched by ribs 9 (FIG. 9) and will not fall out of the disc tray 10 due to vibration or the like.

(Problems to be solved by the invention) By the way, as described above, the types of discs that can be played back by such a device are not constant, and for example, a disc with a large diameter of 12 cm or a disc with a small diameter of 8 cm may be used. Can be played.

FIG. 12 shows a top view of the disc tray 10 shown in FIG. 11 in which a disc having a small diameter is accommodated.

As shown in the figure, when the small-diameter disk 23 is accommodated in the center of the accommodating portion 16, nothing holds the outer peripheral portion of the small-diameter disk 23. Therefore, in this state, the disk case 9
When (Fig. 9) is tilted, the position of the small-diameter disc 23 moves as shown by the broken line 23 ', and the turntable 21 (Fig. 10) holds the center of the small-diameter disc 23. I couldn't do it. Further, for example, if the disc tray 10 vibrates even if the small-diameter disc 23 is fixed so as not to move from the center of the accommodating portion 16 by some means, as described above for the large-diameter disc 15, Since the small-diameter disk 23 is not sandwiched between the ribs 13 of the disk case 9, there is a risk that it will fly out of the disk tray 10. Of course, if you fix it so that you can hold the jump out, you will not be able to lift it by turntable 21 (Fig. 10).

The present invention has been made in view of the above points, and an object thereof is to provide a disc changer capable of reliably holding not only the large-diameter disc 15 but also the small-diameter disc 23.

(Means for Solving the Problems) A disc changer according to the present invention includes a first disc tray for accommodating a large-diameter disc in a constant posture and a second disc tray for accommodating a small-diameter disc in a constant posture. In which one or a plurality of
Disc tray has an accommodating portion into which the large-diameter disc is inserted, and the second disc tray has an accommodating portion into which the large-diameter disc is inserted, and the center of the accommodating portion and the small-diameter disc. It has a holding member that holds the small-diameter disk so as to match the center, and a holding member that holds the outer peripheral portion so as to fix the small-diameter disk in the accommodating portion.

(Operation) In the disc changer of the present invention, the disc tray is provided with the holding member and the gripping member so that the disc having the small diameter is securely accommodated in the accommodation portion of the disc tray.

The holding member acts to accurately hold the small-diameter disc in the disc storage portion. Further, when the disc tray is accommodated in the disc case, the holding member acts to press a part of the outer circumference of the disc having the small diameter to fix the disc having the small diameter in the accommodating portion.

(Embodiment) FIG. 1 is a perspective view of a disc changer of the present invention.

In the figure, the disk case 9 has the same structure as that already described in FIG. The disc tray 25 is the disc tray described in FIG.
Compared with 10, the holding portion 16 is different in that four holding members 26 that are vertically provided in a radial shape and a substantially arcuate holding member 28 that is attached so as to cover from above are newly added.

In FIG. 1, the holding member 26 is a projection provided so as to extend radially from the outer peripheral portion of the accommodating portion 16 toward the center, and the end portion thereof contacts the outer peripheral surface of the small-diameter disk 23, The small-diameter disk 23 ends so that the center of the accommodating portion 16 coincides with the center. Further, the grip member 28 has a structure in which a pair of bows formed by dividing a washer-shaped plate into two are combined and is pivotally supported by a pin 30. As a result, the gripping member 28 is fixed to the accommodating portion 16 such that it can be opened and closed in the direction of the arrow 28b. One ends of two springs 29 are attached to the free ends of the two gripping members 28, respectively.
The other ends of the two springs 29 are attached to the outer peripheral wall surface of the housing portion 16, respectively. Therefore, these springs 29
Therefore, the two gripping members 28 are always applied with an elastic force above the holding member 26 in the accommodating portion 16 so as to widen the outer diameter thereof.

FIG. 2 shows a top view of the disc tray 25 shown in FIG.

In the figure, the outer diameter of the small-diameter disk 23 is a holding member.
The disk tray 25 is held and accommodated so as to come into contact with the end of the disk 26 and coincide with the center of the disk tray 25. At this time, the gripping member 28 maintains the open state in which it has the maximum outer shape by the elastic force of the spring 29, as described above.

FIG. 3 shows the A of the disc tray 25 in the state shown in FIG.
The principal part sectional view seen in the -A direction is shown.

In the drawing, the accommodation portion 16 of the disc tray 25, the small-diameter disc 23, and the two holding members 28 are shown.

As shown in the figure, a notch 28a is provided in the inner peripheral portion of the two gripping members 28 so that the disc 23 having a small diameter fits therein.

As described with reference to FIG. 2, at this time, the two gripping members 28 are in the open state due to the elastic force of the spring 29 (FIG. 2), so that the cutout portion 28a has the small-diameter disk 23.
It does not prevent raising and lowering in the direction of arrow 23a. Therefore, this is a suitable state when the disc tray 10 (disc tray 25) is located above the turntable 21 as described with reference to FIG.

In FIG. 4, the disc tray 25 having such a structure is shown in FIG.
The top view of the state inserted in the disc case 9 shown in the figure is shown.

In the figure, the rib 13 of the disk case 9 (FIG. 9) is in contact with the outer peripheral surface of the grip member 28. Therefore, the two gripping members 28 resist the elastic force of the spring 29 and the arrow 28
It remains closed in the b direction.

FIG. 5 shows A of the disc tray 25 in the state shown in FIG.
The principal part sectional view seen in the -A direction is shown.

The drawing shows a cross section of the accommodation portion 16 of the disc tray 25, the small-diameter disc 23, the two gripping members 28, and the ribs 13.

Now, as described with reference to FIG. 4, at this time, the outer peripheral portions of the two holding members 28 are the disk case 9 (the ninth holding member 28).
Since it is in contact with the rib 13 in the figure, the spring 29 (second
It keeps the closed state in the direction of arrow 28b against the elastic force of (Fig.). Therefore, the notch 28a provided at the lower edge of the grip member 28 grips the outer peripheral portion of the disk 23 and prevents the movement thereof in the direction of the arrow 23a. This prevents the disc 23 from jumping out from the accommodating portion 16.

The disc changer of the present invention is not limited to the above embodiments.

6 and 7 show an embodiment in which the disc tray of the disc changer of the present invention is modified.

The structure shown in FIG. 6 is different from the disk tray 25 of the previous embodiment shown in FIG. 4 in the structure of the holding member 28. Providing a protrusion 31 on the outer peripheral portion of the grip member 28,
One end thereof is pivotally attached to the pin 30, and the other end is provided with a long hole 32a, and a pin 32b inserted therein is provided to be fixed to the bottom of the accommodating portion 16.

In the disc tray 25 having the above structure, when it is inserted into the disc case 9 (FIG. 9), the protrusions 31 of the holding member 28 come into contact with the ribs 13 of the disc case 9 and resist the elastic force of the spring 29. Then, the gripping member 28 is closed. As a result, the small-diameter disk 23 is moved to the fifth
In the same state as shown in the figure, the movement in the direction of the arrow 23a is blocked. The long hole 32a and the pin 32b are provided to restrict the opening / closing movement range of the grip member 28 and prevent it from spreading too much.

The embodiment shown in FIG. 7 shows another modified example.
Compared with the disc tray 25 in the state shown in FIG. 4, the diameter of the accommodating portion 16 is smaller and the shape of the gripping member 28 is different.

As shown in FIG. 3A, the accommodating portion 16 has a small-diameter disc.
It has a slightly larger diameter recess to accommodate 23. That is, in this case, the holding member 26 described with reference to FIG. 1 is integrally housed in the wall surface of the housing portion 16. Further, the gripping member 28 is biased in the direction of the arrow 28b by the spring 33 housed therein. FIG. 2B is a sectional view taken along line BB in FIG. 1A. As shown here, one end of the spring 33 is attached to the protrusion 16a on the upper surface of the housing 16 and the other end is a gripping member. It is attached to the inner wall surface of 28. The gripping member 28 is usually a spring 33.
The elastic force of keeps the open state as shown by the broken line. However, when it is inserted into the disc case 9 (Fig. 9), the end portion 28 'of the grip member 28 contacts the rib 13 of the disc case 9, and the grip member 28 resists the elastic force of the spring 33. Slide in the opposite direction of arrow 28b and close. As a result, the end portion 28 ″ thereof projects above the small-diameter disk 23, and the small-diameter disk 23 is prevented from jumping out. In this embodiment, the holding member 28 does not need a notch.

(Effect of the Invention) In the disk changer of the present invention having the above-described structure, the holding member causes the center of the small-diameter disk to coincide with the center of the accommodating portion of the disk tray, and further the movement of the fragile small-diameter disk is restricted by the holding member. Therefore, the small-diameter disc can be accommodated in a fixed posture without being displaced or jumping out from the center of the accommodating portion.

[Brief description of drawings]

FIG. 1 is a perspective view of a disc changer of the present invention, FIG. 2 is a top view of a disc tray according to the present invention containing a small diameter disc, and FIG. 3 is a disc tray according to the present invention containing a small diameter disc. 4 is a top view of the disc tray according to the present invention inserted in the disc case, FIG. 5 is a cross-sectional view of the main portion of the disc tray according to the present invention inserted in the disc case, and FIG. 6 is a book. FIG. 7 is a top view of a disk tray showing another embodiment of the present invention, and FIG. 7 is a top view of a disk tray showing another embodiment of the present invention and a sectional view of essential parts.
FIG. 8 is a perspective view of an essential part of a disk reproducing device, FIG. 9 is a perspective view of a conventional disk changer, FIG. 10 is a sectional view of an essential part of the disk reproducing device, and FIG. 11 is a conventional disk accommodating a large-diameter disk. FIG. 12 is a top view of the disc tray in FIG. 12, and FIG. 12 is a top view of a conventional disc tray accommodating a disc having a small diameter. 8 ... Disc changer, 9 ... Disc case, 13 ... Rib, 25 ... Disc tray, 26 ... Holding member, 28 ... Gripping member, 29 ... Spring.

Claims (1)

[Scope of utility model registration request] 1. A device comprising one or a plurality of first disc trays for accommodating large-diameter discs in a fixed posture and one or a plurality of second disc trays for accommodating small-diameter discs in a constant posture. The first disc tray has an accommodating portion into which the large diameter disc is fitted, and the second disc tray has an accommodating portion into which the large diameter disc is fitted, the center of the accommodating portion, and the small diameter portion. Disc changer, which has a holding member for holding the small-diameter disc so as to match the center of the disc, and a holding member for holding the outer-diameter part of the disc so as to fix the small-diameter disc in the accommodating portion. .