JP3765746B2 - Disc player - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc playback apparatus.
[0002]
[Prior art]
Portable CD players and MD players are widely used because of their advantages such as high sound quality, small size, and light weight. These players can play corresponding discs, that is, CD players can play CDs (compact discs) and MD players can play MDs (minidiscs), but it is still more convenient if one disc player can play both CDs and MDs. .
[0003]
As a disk reproducing apparatus capable of reproducing both a CD (8 cm CD) and an MD, as shown in FIG. 8, an MD turntable 82 and a CD turntable 83 are arranged side by side on a lower case 81. One in which an optical pickup 84 is provided between the two turntables 82 and 83 is conceivable.
[0004]
In this disc reproducing apparatus, MD can be reproduced by mounting the MD on the MD turntable 82 on one side (lower side in FIG. 8) on the lower case 81, and CD on the opposite side (right side in FIG. 8) on the lower case 81. The CD can be played by attaching the CD to the turntable 83.
[0005]
[Problems to be solved by the invention]
However, since the disk reproducing apparatus as described above has a structure in which the MD and the CD are arranged side by side on the left and right, there is a problem that the plane area increases and the apparatus becomes large. This is a major disadvantage when considering a portable disk reproducing apparatus. In addition, two motors for rotating the turntable are required, which causes a problem of cost increase.
[0006]
The present invention has been made in view of the above points, and an object of the present invention is to provide a disk reproducing apparatus that can be reduced in size by reducing the plane area and can be reduced in cost.
[0008]
[Means for Solving the Problems]
The disc reproducing apparatus of the present invention is for a second disc rotation that is an 8 cm CD (compact disc) on a lower case having a first turntable for the first disc rotation that is an MD (mini disc) provided on the upper surface. The second turntable overlaps with the first turntable when lowered, and the second turntable is separated upward from the first turntable when lowered. A second turntable mechanism portion, a clamper mechanism portion having a second disc holding clamper, and a cartridge holder for holding the first disc are provided. The cartridge holder is connected to an operation knob outside the apparatus. A slider is attached, and the second turntable mechanical unit and the clutch are moved according to the sliding state of the slider. Npameka part, by the cartridge holder is operated, the second turntable mechanism portion in a first disk reproduction state or second disk reproduction state, the Kuranpameka portion, said cartridge holder is switched set Features.
[0009]
In the above disk reproducing apparatus , the slider is formed with a second turntable mechanism lifting / lowering section, a second turntable mechanism hooking section, and a clamper pressing section. The second turntable mechanical part is engaged with the second turntable mechanical elevating part of the slider, and moves up and down as the slider slides. Further, the main part including the second turntable is pivotable upward in the second turntable mechanism, and the slider is slid to the first state and the second turntable mechanism is raised. At the same time, the second turntable mechanical hooking portion formed on the slider is engaged with the main part of the second turntable mechanical portion, and the cartridge holder rotates upward in that state. Then, the main part of the second turntable mechanical part is rotated upward integrally with the cartridge holder by the second turntable mechanical hooking part.
[0010]
Further, the cartridge holder is provided on the lower case so as to be rotatable in the vertical direction with the second turntable mechanical part interposed therebetween, and a part of the cartridge holder can be slid outward with respect to the other part. , a part is connected to the slider, as the slider is the part to be slid into the second state, not a fault with respect to the second disc mounted on the second turntable Slide outward. Further, the clamper mechanism is attached to the lower surface of the upper surface of the cartridge holder so as to be rotatable in the vertical direction, and is rotated by the spring toward the cartridge holder (upward), while the slider is slid to the second state. And pressed down by the clamper pressing portion formed on the slider.
[0011]
Further, when the main part of the second turntable mechanical part rises, the housing part formed inside the upper surface part of the cartridge holder located above obstructs the first disk holding by the cartridge holder. stored so as not to, the Kuranpameka section Ru stored in the receiving portion to be rotated in the cartridge holder side by a spring.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a disk reproducing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 7 are views showing an embodiment of a disk reproducing apparatus according to the present invention, FIG. 1 is an exploded perspective view of the whole, and FIG. 2 is a side view showing the relationship of each component in the MD mounted state. 3 is a view of FIG. 2 partially viewed from the front, FIG. 4 is a view of FIG. 2 with the cover opened, and FIG. 5 is a view of the relationship between the components in the CD-mounted state, viewed from the side. 6 is a view of FIG. 5 partially viewed from the front, and FIG. 7 is a view of FIG. 6 with the cover opened.
[0013]
Referring to these drawings, particularly FIG. 1, reference numeral 10 denotes a rectangular thin lower case (also referred to as a base portion), on which an MD turntable 11 and an optical pickup 12 are arranged. A cover 20 is provided on the lower case 10 so as to be rotatable upward. The cover 20 is formed in the lower case 10 by fitting the shafts 13 provided on the inner sides of the rear end of the lower case 10 into the holes 22 formed in the protruding pieces 21 provided on both sides of the rear end. The rear end portion is pivotally attached upward with the fulcrum as a fulcrum. A pair of left and right leaf springs 23 are attached to the inner surface of the upper surface of the cover 20 to push a cartridge holder 30 and the like described later downward. Further, a horizontally long hole 24 is formed in the center of the vertical surface of the rear end portion of the cover 20 so as to lead out an operation shaft 41 of a slider 40 described later.
[0014]
A cartridge holder 30 for holding the MD is provided between the cover 20 and the lower case 10. The cartridge holder 30 is configured so that the shaft 13 of the lower case 10 is fitted into the holes 31 provided on both sides of the rear end, so that the lower case 10 can be vertically moved with the rear end portion as a fulcrum in the same manner as the cover 20. It can be pivotally attached to.
[0015]
The upper surface portion 32 of the cartridge holder 30 excluding both side portions protrudes upward, and the inner side (lower side) serves as a receiving portion 33 for a CD turntable mechanical portion 50 and a clamper mechanical portion 60 described later. . That is, at the time of MD reproduction, the CD turntable mechanical unit 50 and the clamper mechanical unit 60 for CD reproduction are unnecessary, and are stored in the accommodating unit 33 so that they do not become an obstacle to the MD holding unit of the cartridge holder 30. It is.
[0016]
The cartridge holder 30 includes a left cartridge holder 34 that constitutes most of the cartridge holder 30 and a right cartridge holder 35 that constitutes a part of the cartridge holder 30. The right cartridge holder 35 is slidable to the left and right with respect to the left cartridge holder 34 by inserting and holding three shafts 36 provided on the upper surface portion 35a in three elongated holes 37 formed in the left cartridge holder 34. Mounted on. Further, the right cartridge holder 35 is slid to the left and right in conjunction with the slider 40 by fixing one of the three shafts 36 (the shaft 36a) to the slider 40, which will be described later, with a hole 42. . That is, when the right cartridge holder 35 is slid to the left side (left cartridge holder 34 side) in conjunction with the slider 40, the right cartridge holder 35 constitutes the regular cartridge holder 30 together with the left cartridge holder 34. A mechanism for opening the shutter of the MD is attached to the inside, and it becomes an obstacle to the CD at the time of CD reproduction. Therefore, the right side is interlocked with the slider 40 so as not to become an obstacle to the CD at the time of CD reproduction. Slide outward. In the description of this embodiment, words representing position and direction, such as right, left, and rear, are used. This is particularly true with reference to FIG. Are used for convenience so that the technical scope of the present invention is not limited to these terms.
[0017]
The slider 40 is attached to the left cartridge holder 34 of the cartridge holders 30 so as to be slidable left and right. The slider 40 is made of an inverted L-shaped metal plate, the horizontal plate 40 a overlaps the upper surface portion 34 a of the left cartridge holder 34, and the vertical plate 40 b extends from the rear edge of the left cartridge holder 34 to the lower side of the left cartridge holder 34. It hangs down. A long hole 43 is formed in the horizontal plate 40a, and a shaft 38 protruding from the upper surface portion of the left cartridge holder 34 is engaged with the long hole 43. Thereby, the slider 40 is attached to the left cartridge holder 34 so as to be slidable to the left and right. On the other hand, an operation shaft 41 protrudes rearward from the vertical plate 40b, and the operation shaft 41 is led out to the rear side outside the cover 20 through a hole 24 formed in the cover 20. The operation knob 25 is attached to the operation shaft 41 outside the rear side of the cover 20. The vertical plate 40b is formed with a pair of left and right stepped holes 44 (CD turntable mechanical elevating parts) for elevating a CD turntable mechanical part 50 described later as the slider 40 slides. Here, the stepped hole 44 is a hole having a horizontal portion provided at the upper end and lower end of the oblique portion. When the shaft is inserted into the hole and the hole moves to the left and right, the shaft is moved up and down by the oblique portion. be able to.
[0018]
On the other hand, the horizontal plate 40a of the slider 40 overlapped with the upper surface portion 34a of the left cartridge holder 34 is provided with a CD turntable mechanical hooking portion 45 that hangs downward in an L shape from a part of the side edge portion. At the same time, a clamper pushing portion 46 is formed by projecting a part of the plane portion downward. The hooking portion 45 and the pushing portion 46 protrude downward from the upper surface portion of the left cartridge holder 34 through a long hole 39 formed in the upper surface portion 34 a of the left cartridge holder 34. Further, a pair of left and right recesses 47 are formed at the front edge of the horizontal plate 40 a of the slider 40. On the other hand, on the upper surface portion 34 a of the left cartridge holder 34, a leaf spring 71 is fixed by a screw 72 so that the arcuate tip portion is selectively engaged with the pair of left and right concave portions 47 as the slider 40 slides. . The arcuate tip of the leaf spring 71 is selectively engaged with the pair of left and right recesses 47 as the slider 40 slides, so that the slider 40 is slid to the left or slid to the right. Fixed to.
[0019]
Between the MD turntable 11 provided on the upper surface of the lower case 10 and the left cartridge holder 34, a CD turntable mechanism 50 is provided so as to be movable up and down. The CD turntable mechanism 50 includes a CD turntable 51, a turntable holder 52, a horizontal support plate 53, and a base vertical plate 54, so that the CD turntable 51 can freely rotate to the turntable holder 52. The turntable holder 52 is fixed to the front end of the horizontal support plate 53 with a screw 55, and the rear end portion of the horizontal support plate 53 is pivotable upward to the upper end portion of the base vertical plate 54 by a shaft 56 and a washer 57. Mounted. Here, since the horizontal support plate 53 has a contact portion between the horizontal support plate 53 and the base vertical plate 54, the horizontal support plate 53 is prevented from rotating downward from the horizontal state.
[0020]
A base vertical plate 54 is held in the rear end portion of the lower case 10 so as to be movable up and down. Further, the base vertical plate 54 is provided with two left and right shafts 58 on the rear surface, and the shaft 58 passes through the vertically long hole 14 formed in the rear end vertical surface of the lower case 10. The vertical plate 40b of the slider 40 in which the two stepped holes 44 are formed is inserted into each of the two stepped holes 44 formed in the slider 40 in the assembled state. Located on the back side). Therefore, when the slider 40 is slid left and right, the CD turntable mechanism 50 is driven up and down by the stepped hole 44 and the shaft 58, and the CD turntable 51 is placed on the MD turntable 11 in the lowered state. In the overlapped and raised state, the CD turntable 51 is separated from the MD turntable 11 above.
[0021]
A clamper mechanism 60 is mounted on the lower surface of the upper surface of the left cartridge holder 34 so as to be rotatable above and below the CD turntable mechanism 50. The clamper mechanism 60 includes a clamper 61, a clamper holder 62, and a support piece 63. The clamper 61 is rotatably held by the clamper holder 62, and the clamper holder 62 is fixed to the tip of the support piece 63 with a screw 64. The rear end portion of the support piece 63 is attached to the upper surface lower surface mounting portion 68 of the left cartridge holder 34 by a shaft 65 and a washer 66 so as to be rotatable in the vertical direction. Such a clamper mechanism 60 is pulled toward the left cartridge holder 34 by the spring 67 stretched between the attachment portion 63a of the support piece 63 and the upper surface portion attachment piece 69 of the left cartridge holder 34 (rotated upward). However, when the slider 40 is slid rightward, the clamper pressing portion 46 formed on the slider 40 comes into contact with the support piece 63, and this support piece The clamper 61 is pushed down by turning 63 downward.
[0022]
In the disc reproducing apparatus configured as described above, in FIG. 1, when the operation knob 25 is slid to the right side, the CD reproduction state is set, and when the operation knob 25 is slid to the left side, the MD reproduction state is set.
[0023]
These will be described in detail. Now, when the operation knob 25 is slid to the right, the slider 40 integrally slides to the right. Then, the clamper pressing portion 46 formed on the slider 40 comes into contact with the support piece 63 of the clamper mechanical portion 60 and rotates the support piece 63 downward, so that the clamper 61 is pushed down. Further, since the right cartridge holder 35 slides to the right (outside) integrally with the slider 40, the right cartridge holder 35 does not become an obstacle to a mounted CD described later.
[0024]
Further, when the slider 40 slides to the right, the CD turntable mechanism 50 is lowered by the stepped hole 44 formed in the slider 40 and the shaft 58 inserted into the stepped hole 44. Therefore, the CD turntable 51 of the CD turntable mechanical unit 50 overlaps the MD turntable 11 on the lower case 10. As a result, when the MD turntable 11 is rotated by a motor (not shown) in the lower case 10, the CD turntable 51 is rotated via the MD turntable 11.
[0025]
In this state, if the cover 20 is opened as shown in FIG. 7 and the cartridge holder 30 is rotated upward, a CD (not shown) can be mounted on the CD turntable 51, and thereafter FIG. As shown in FIG. 6, when the cover 20 is closed and the cartridge holder 30 is rotated downward in a horizontal state, the clamper 61 is pushed down, so that the clamper 61 is placed on the CD on the CD turntable 51. Overlap and hold down the CD. Then, in such a state, the information in the CD is read by the optical pickup 12 while the CD in the lower case 10 is operated to rotate the CD, thereby reproducing the CD.
[0026]
On the other hand, when the operation knob 25 is slid to the left in FIG. 1, the slider 40 integrally slides to the left. Then, the right cartridge holder 35 slides to the left (inside) integrally with the slider 40, so that the right cartridge holder 35 and the left cartridge holder 34 constitute a regular cartridge holder 30.
[0027]
Further, when the slider 40 slides to the left side, the clamper pressing portion 46 formed on the slider 40 is disengaged from the support piece 63 of the clamper mechanical portion 60, so that the clamper mechanical portion 60 is rotated upward by the spring 67, and the clamper mechanical portion 60 is It is stored in the accommodating portion 33 of the holder 30.
[0028]
Further, when the slider 40 slides to the left, the CD turntable mechanism 50 is raised by the stepped hole 44 formed in the slider 40 and the shaft 58 inserted into the stepped hole 44. Accordingly, the CD turntable 51 is separated upward from the MD turntable 11, and the main part of the CD turntable mechanism 50 including the CD turntable 51 (the CD turntable 51, the turntable holder 52 and the horizontal support). The plate 53) is stored in the accommodating portion 33 of the cartridge holder 30 in the same manner as the clamper mechanism portion 60.
[0029]
Further, when the slider 40 slides to the left, the CD turntable mechanism hooking portion 45 provided on the slider 40 is below the horizontal support plate 53 of the raised CD turntable mechanism 50 as shown in FIGS. Is engaged. Therefore, when the cover 20 is opened and the cartridge holder 30 is rotated upward as shown in FIG. 4, the main parts of the CD turntable mechanism 50 (the CD turntable 51, the turntable holder 52, and the horizontal support plate 53). Further, the hooking portion 45 rotates upward integrally with the cartridge holder 30 in a state of being stored in the accommodating portion 33 of the cartridge holder 30 (of course, the clamper mechanism portion 60 attached to the cartridge holder 30 is also accommodated in the accommodating portion 33. The cartridge holder 30 is rotated upward integrally with the cartridge holder 30). Accordingly, when the cover 20 is opened and the cartridge holder 30 is rotated upward, the MD can be inserted into the cartridge holder 30 without being obstructed by the CD turntable mechanism 50 and the clamper mechanism 60. . Thereafter, when the cover 20 is closed and the cartridge holder 30 is rotated horizontally downward, the MD inserted in the cartridge holder 30 can be mounted on the MD turntable 11 on the lower case 10. Then, if the information recorded on the MD is read by the optical pickup 12 while rotating the MD turntable 11 and the MD mounted thereon by a motor, the MD is reproduced.
[0030]
As described above, in the above-described disc playback apparatus, during CD playback, the CD turntable 51 is stacked on the MD turntable 11 and the CD is mounted on the CD turntable 51. Accordingly, the plane area may be about MD or one CD, and downsizing can be achieved. Moreover, since only one motor is provided and the MD turntable 11 is rotated, the cost can be reduced. Further, according to the above-described disc reproducing apparatus, the mechanism can be easily switched between the CD reproducing state and the MD reproducing state by operating the operation knob 25 outside the apparatus.
[0031]
In the above embodiment, the case of selectively reproducing a CD, which is an exposed disk, and an MD, which is a cartridge housing type disk, has been described. Other similar discs in the cartridge storage format can be reproduced. Furthermore, the disc playback apparatus of the present invention can be recorded in addition to playback.
[0032]
【The invention's effect】
As described above in detail, according to the disk reproducing apparatus of the present invention, the planar area can be reduced to reduce the size, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a disk reproducing apparatus according to the present invention, and is an exploded perspective view of the whole.
FIG. 2 is a diagram showing an embodiment of a disk reproducing device according to the present invention, and is a diagram showing a relationship of each component in a state where an MD is mounted, as viewed from the side;
FIG. 3 is a diagram showing an embodiment of a disk reproducing device according to the present invention, and is a diagram when FIG. 2 is partially seen from the front.
4 is a diagram showing an embodiment of a disc reproducing apparatus according to the present invention, and is a diagram showing FIG. 2 with a cover opened. FIG.
FIG. 5 is a diagram showing an embodiment of a disc reproducing apparatus according to the present invention, and is a diagram seen from the side showing the relationship of each part in a CD mounted state.
FIG. 6 is a diagram showing an embodiment of a disk reproducing device according to the present invention, and is a view of FIG. 5 partially viewed from the front.
7 is a diagram showing an embodiment of a disk reproducing device according to the present invention, and is a diagram showing FIG. 5 with a cover opened. FIG.
FIG. 8 is a perspective view showing a conventional conceivable disc player.
[Explanation of symbols]
10 Lower case 11 MD turntable 25 Operation knob 30 Cartridge holder 40 Slider 50 CD turntable mechanism 51 CD turntable 60 Clamper mechanism 61 Clamper

Claims (7)

On the lower case where the first turntable for rotating the first disk which is MD (mini disk) is provided on the upper surface,
A second turntable for rotating the second disk, which is an 8 cm CD (compact disk), can be raised and lowered. When the second turntable is lowered, the second turntable overlaps the first turntable. A second turntable mechanism part in which a turntable is separated upward from the first turntable;
A clamper mechanism having a clamper for holding the second disc;
A cartridge holder for holding the first disc is provided;
A slider connected to an operation knob outside the apparatus is attached to the cartridge holder, and the second turntable mechanical unit, the clamper mechanical unit, and the cartridge holder are operated according to the sliding state of the slider, 2. A disk reproducing apparatus according to claim 1, wherein the second turntable mechanism, the clamper mechanism, and the cartridge holder are switched between the first disk reproducing state and the second disk reproducing state. 2. The disk reproducing apparatus according to claim 1 , wherein the slider is formed with a second turntable mechanism lifting / lowering section, a second turntable mechanism hooking section, and a clamper pressing section. 3. The disk reproducing apparatus according to claim 2 , wherein the second turntable mechanical part is engaged with the second turntable mechanical elevating part of the slider and moves up and down as the slider slides. The main part including the second turntable is pivotable upward in the second turntable mechanical part, and the second turntable mechanical part is lifted by sliding the slider to the first state. At the same time, the second turntable mechanical hooking portion formed on the slider is engaged with the main portion of the second turntable mechanical portion, and the cartridge holder is rotated upward in this state. When the the second turntable mechanism engaging portion, according to claim 2 or 3 main portion of the cartridge holder the integral with a second turntable mechanism portion, characterized in that it is rotated upward Disc player. The cartridge holder is provided on the lower case so as to be rotatable in the vertical direction with the second turntable mechanical part interposed therebetween, and a part of the cartridge holder can be slid outward with respect to the other part. some are connected to the slider, the slider is said portion to be slid into the second state, the outer so as not to disturb the second disc mounted on the second turntable the preceding claims 2, characterized in that it is sliding disk reproducing apparatus according to any one of 4. The clamper mechanism is attached to the lower surface of the upper surface of the cartridge holder so as to be rotatable in the vertical direction. the preceding claims 2, characterized in that it is pressed downward by the clamper pressing portion formed on the slider disk reproducing apparatus according to any one of 5. When the main part of the second turntable mechanical part rises, the housing part formed inside the upper surface part of the cartridge holder located above does not become an obstacle to the first disk holding by the cartridge holder. stored as the Kuranpameka unit disk reproducing apparatus according to any one of claims 2, characterized in that it is stored in the accommodation portion to be rotated in the cartridge holder side by the spring 6.

Images