JP3653432B2 - Disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disc apparatus that irradiates a signal surface with a pickup beam and records the signal on a disc or reproduces a signal on the disc.
[0002]
[Prior art]
FIG. 10 is a perspective view of a conventional disk recording or reproducing apparatus. This is a so-called CD radio cassette player, and has an operation panel (91) provided with speakers (90) and (90) on the front surface of the cabinet (1) and a display for displaying the state of use. A cover (4) covers the recess (10) provided on the upper surface of the cabinet (1). A mechanism block (2) is provided in the recess (10). The mechanism block (2) is a turntable (8) for rotating the disk D and a pickup provided so as to be able to approach and separate from the turntable (8). (80) as well known.
At the time of disc reproduction, the user opens the cover (4), exposes the recess (10), and places the disc D on the turntable (8).
As another type of disk recording or reproducing apparatus, as shown in FIG. 11, a tray (92) on which a disk D is placed is provided so as to be able to appear and retract in the cabinet, and the disk D is loaded on the drawn tray (92) from above. Some can withdraw and retract the tray (92).
[0003]
[Problems to be solved by the invention]
Various types of devices have been proposed for such devices. In any device, when the disk D is mounted on the turntable (8), the cover (4) is opened or the tray is attached. Pull out. That is, the operation when the disk is mounted on the turntable (8) is a common one, and there is not much difference in any device.
By the way, in such a device, a device having a short depth may be required from the commodity market. In such a device, the applicant may use the product as a product if the device performs a strange operation when the disc is mounted on the turntable (8), and has outstanding features than other devices. We focused on the point that can attract the interest. Specifically, it was conceived that the disc can be mounted from the top as usual, and that the mechanism block protrudes upwards and becomes a substantially horizontal state as a design that is vertically long but short in depth. However, even in this case, it is necessary to avoid that the usability when mounting the disc is deteriorated.
It is an object of the present invention to make the operation of the apparatus when mounting a disk in a cabinet strange while maintaining the ease of use when mounting the disk, and to raise the interest of the user.
[0004]
[Means for solving the problems]
The disk device according to claim 1 stores a mechanism block provided with a turntable in a cabinet having an opening on an upper surface, and the upper surface opening is a disk for recording or reproduction covered with a cover pivotally supported by the cabinet. In the device,
A guide mechanism comprising a cam groove provided in one of the cabinet or the mechanism block and a fitting shaft provided in the other and fitted in the cam groove;
The mechanism block is connected to the cover, is provided on the inner surface of the cabinet, is provided so as to be able to move up and down along the guide mechanism, and the guide mechanism raises the first position in the cabinet; The turntable is provided so as to be movable between a second position that protrudes from the upper surface opening of the cabinet and assumes a recumbent posture with the turntable facing upward.
According to a second aspect of the present invention, in the disk device according to the first aspect, the upper surface opening of the cabinet includes the cover and a front cover whose base end is pivotally supported by the cabinet and whose front end is in contact with the cover. The rotation direction of the cover and the front cover during opening and closing is opposite to each other in a plane parallel to the transition locus of the mechanism block.
[0005]
[Action and effect]
(1) Initially, the mechanism block (2) is stood and stored in the cabinet (1). Although the cabinet (1) is vertically long, since the depth can be shortened, it can meet the market demand for a device having a short depth.
(2) When the cover (4) is opened, the mechanism block (2) connected to the cover (4) is pulled out from the upper surface of the cabinet (1), and the turntable (8) is turned sideways by the guide mechanism. Stop at position. At this position, the turntable (8) faces upward, so that it is easy to mount the disc.
That is, in this apparatus, since the conventional procedure for mounting the disk to the mechanism block (2) from the top remains as it is, the usability is maintained.
(3) When the cover (4) is opened, the mechanism block (2) protrudes from the upper surface of the cabinet (1) and operates unexpectedly for the user. it can. Therefore, since the device is unique in the operation when the cover (4) is opened, the user's willingness to demand can be stimulated as a product.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a disk recording or reproducing apparatus according to this example, and shows a state in which a disk can be loaded. On the front surface of the cabinet (1), speakers (90) and (90) and an operation panel (91) are provided as in the conventional case. The cabinet (1) is provided with a recess (10) having an open upper surface, and both end portions of the recess (10) are raised on the cabinet (1) to form projecting surfaces (18) and (18). A mechanism block (2) having a turntable (8) protrudes from the upper surface of the recess (10) with the turntable (8) facing upward. The mechanism block (2) includes a turntable (8) and a sub chassis (21) on which a pickup (80) is mounted via a vibration isolation member (not shown) made of rubber or the like (20). ). Thereby, the impact and vibration transmitted to the pickup (80) are reduced.
The turntable (8) has a ball chucking structure and holds the center of the disc. As shown in FIG. 9, the ball chucking structure is a well-known configuration in which a ball (81) is biased outward from a side surface of the turntable (8), and a disk is attached to the turntable (8). When the center of D is inserted, the ball (81) presses and holds the periphery of the center hole d1 of the disk D.
The front cover (5) is provided on the front side of the mechanism block (2) in FIG. 1, and the front cover (5) is opened and the mechanism block (2) protrudes from the upper surface of the cabinet (1) as described later. There is a feature of this example.
[0007]
FIG. 2 is an exploded perspective view of the above. A recess (10) is formed at the center of the upper surface of the cabinet (1), and the mechanism block (2) is stood and stood in the recess (10). On the inner surface of the recess (10), vertically long cam grooves (14, 14) are formed, and the first fitting shafts (22), (22) protruding outward from the base (20) are cam grooves ( 14) The mechanism block (2) is guided to slide by fitting into (14). On both side surfaces of the base (20), the second fitting shafts (23) and (23) protrude outward from above the first fitting shafts (22) and (22), and a receiving lever ( 6) is pivotally supported.
[0008]
The receiving lever (6) is provided to receive the falling disk when the disk is insufficiently attached to the turntable (8), and is recessed downward to support the lower end of the disk (60 ) Protrudes outward from the base end of the fitting shaft 61 and the guide shaft 62 from the distal end. The fitting shaft (61) is fitted into a hole (25) opened at the lower end of the base (20) to constitute the pivotal support (61a) of the receiving lever (6). A torsion spring (not shown) is fitted to the fitting shaft (61), and the receiving lever (6) is urged clockwise, and is rotated by a stopper (26) located at the lower end of the base (20). Too much regulation. The guide shaft (62) fits into a recess (15) provided on the inner surface of the recess (10) of the cabinet (1).
If the receiving lever (6) is not provided, the disk dropped from the turntable (8) will remain in the recess (10), which may be troublesome to remove and may damage the disk. . Therefore, the receiving lever (6) is necessary for reasons such as prevention of disk damage.
[0009]
The upper surface of the recess (10) is covered with a top cover (4) and the front cover (5). With the top cover (4) and the front cover (5) closed, the upper surface continues to the projecting surface (18) of the cabinet (1). The top cover (4) and the front cover (5) are pivotally supported (4a, 5a) on the inner surface of the recess (10), respectively. Rotate to the opposite side along the plane including the transition path of (2). In this example, by opening the top cover (4), the mechanism block (2) protrudes with the turntable (8) facing upward.
A gear portion (40) is provided at the base end portion of the top cover (4), and the pivot portion (4a) of the top cover (4) has a shaft (42) concentric with the gear portion (40) as a recess (10). It is configured to be fitted into a hole (16) opened on the inner side surface. Similarly, the pivot portion (5a) of the front cover (5) is configured by fitting the shaft (53) of the base end portion into the hole (17) formed in the inner surface of the recess (10). A wall plate (50) is provided at the base end of the front cover (5) toward the top cover (4), and a notch (51) is formed in the wall plate (50). An arm piece (52) extends downward from the wall plate (50), and the receiving lever (6) has a fitting shaft (61) in contact with the arm piece (52). As a result, the front cover (5) is restricted from being opened carelessly.
[0010]
Vertical plates (11) and (11) facing each other are erected on the inner side of the inner surface of the recess (10), and the pivot (12) protrudes outward from the upper end of each vertical plate (11). Yes. On the right vertical plate (11), a support shaft (13) protrudes from below the pivot (12).
A guide lever (3) for conveying and driving the mechanism block (2) is pivotally supported (3a) at the upper end of the mechanism block (2), and the pivot (3a) is a second fitting shaft of the mechanism block (2). (23) A hole (31) opened at the tip of the guide lever (3) is fitted into the (23). A gear (30) is formed at the base end of the guide lever (3), and a through hole (32) (32) opened in the center of the gear (30) is a pivot of the vertical plates (11) (11). (12) Fits into (12). A drive gear (7) meshing with the gear (30) of the guide lever (3) is fitted to the support shaft (13). The drive gear (7) is driven by a motor (not shown) and meshes with the gear (30) of the guide lever (3) and the gear part (40) of the top cover (4), so that the guide lever (3) and the top The cover (4) is rotated.
[0011]
(Drawing out mechanism block)
3 to 7 are cross-sectional side views of the cabinet (1) taken along line AA in FIG. 1, and show a state in which the mechanism block (2) is pulled out. A storage chamber (9) into which a battery for supplying power to the mechanism block (2) and circuit components is inserted is provided on the rear side of the lower end of the cabinet (1).
The drive gear (7) and the gear portion (40) of the top cover (4) each have a toothless portion (70) (41) formed in a part thereof, and as shown in FIG. At the position stored in the recess (10), the top ends of the top cover (4) and the front cover (5) abut each other and are closed. The toothless portion (70) of the drive gear (7) and the gear (30) of the guide lever (3) are opposed to each other, so that even if the drive gear (7) rotates slightly inadvertently, the guide lever ( 3) does not rotate and the mechanism block (2) is not pulled out. The gear part (40) of the top cover (4) meshes with the drive gear (7).
On the transition path of the mechanism block (2), a drawer completion detection switch (SW) is provided. As will be described later, the mechanism block (2) is turned on by pushing the switch (SW) in the drawer completion state. The attachment position of the drawer completion detection switch (SW) is not limited to the position shown in FIG.
[0012]
Pull out start The mechanism block (2) is pulled out of the cabinet (1) and the disk is mounted on the mechanism block (2) by the following procedure. First, the operation panel 91 is operated to energize a motor (not shown), and the drive gear 7 in FIG. 3 is rotated counterclockwise. Since the top cover (4) meshes with the drive gear (7), the top cover (4) rotates clockwise around the pivot (4a) and opens. However, since the drive gear (7) has the toothless portion (70) facing the gear (30) of the guide lever (3), the guide lever (3) does not rotate and is linked to the guide lever (3). The mechanism block (2) is not moved. In the receiving lever (6), the fitting shaft (61) is in contact with the lower end of the arm piece (52) of the front cover (5), and the front cover (5) is careless about the pivot (5a). Prevent opening.
[0013]
As shown in FIG. 4, when the drive gear (7) is further rotated counterclockwise, the top cover (4) is opened only by a gap from which the mechanism block (2) protrudes. The drive gear (7) begins to mesh with the gear (30) of the guide lever (3) with the missing tooth portion (70) escaping counterclockwise. The guide lever (3) rotates clockwise, and the mechanism block (2) is pulled up along the cam groove (14).
As shown in FIG. 5, the upper end of the mechanism block (2) protrudes from the gap between the top cover (4) and the front cover (5). The front cover (5) still does not rotate in the opening direction. The receiving lever (6) moves up while maintaining the state where the guide shaft (62) is fitted in the recess (15).
[0014]
As shown in FIG. 6, when the mechanism block (2) further rises along the cam groove (14), the turntable (8) is exposed. The missing tooth part (70) of the drive gear (7) and the missing tooth part (41) of the gear part (40) of the top cover (4) face each other, and the top cover (4) no longer rotates clockwise. Opening complete state. The fitting shaft (61) of the receiving lever (6) leaves the arm piece (52) and fits into the notch (51) of the front cover (5). Thereby, the front cover (5) is released from the rotation restriction in the opening direction. The guide shaft (62) of the receiving lever (6) is in contact with the upper end of the recess (15).
[0015]
Pull-out completion When the drive gear (7) further rotates counterclockwise and the mechanism block (2) is pulled out, as shown in FIG. 7, the fitting shaft (61) of the receiving lever (6) is pulled out. ) Pushes the side edge of the notch (51) of the front cover (5) to open the front cover (5). The receiving lever (6) has the guide shaft (62) in contact with the wall plate (50), and the receiving lever (6) rotates counterclockwise against the spring bias. That is, the receiving lever (6) does not protrude from the cabinet (1). The mechanism block (2) pushes the drawer completion detection switch (SW) to turn it ON. The motor that rotates the drive gear (7) stops rotating, and the guide lever (3) stops rotating in the pull-out direction of the mechanism block (2).
[0016]
The mechanism block (2) stops when the turntable (8) is on its side, and the disc is mounted on the turntable (8) in this state. Since the front cover (5) is open, it does not interfere with the insertion / removal of the disc into the turntable (8). Also, the receiving lever (6) does not protrude from the cabinet (1) and does not obstruct the disk insertion / removal.
The rear edge X of the recess (10) of the cabinet (1) is in contact with the bottom surface of the mechanism block (2), and the mechanism block (2) is bent when the disk is pressed against the turntable (8). Deformation can be prevented. In FIG. 7, the mechanism block (2) is disposed obliquely upward, but it goes without saying that it can be set substantially horizontal by changing the shape of the cam groove (14).
When the disk D is mounted on the mechanism block (2) for reproduction, the drive gear (7) is reversed to store the mechanism block (2) in the cabinet (1). Since this procedure performs the reverse operation, the detailed description is omitted.
[0017]
In this example, the upper surface opening of the cabinet (1) is covered with two sheets of a top cover (4) and a front cover (5). The two covers (4) and (5) may be integrated, but the applicant has two covers (4) and (5) for the following reason.
FIGS. 8A and 8B are cross-sectional side views of the cabinet (1) when the covers (4) and (5) are integrated into a large cover (400). To open the large cover (400) and allow the mechanism block (2) to protrude from the top opening of the cabinet (1), the large cover (400) is rotated in either direction A or B in FIG. 8 (a). There is a need.
However, when the large cover (400) is rotated in the direction A as shown by the alternate long and short dash line in FIG. 8 (a), the large cover (400) becomes the rear end surface of the cabinet (1) and the wall surface of the storage chamber (9). Therefore, it is necessary to enlarge the cabinet (1). This is contrary to the miniaturization of the device, which is a demand of the market.
In the above example, the mechanism block (2) is taken out in conjunction with the top cover (4). If the large cover (400) is rotated in the direction B, as shown in FIG. 8 (b), the large cover (400) is completely opened and the transition path of the mechanism block (2) is opened. It is necessary to pull out the mechanism block (2). That is, a mechanism for opening and closing the large cover (400) and a mechanism for projecting and retracting the mechanism block (2) are required separately, and a drive source for driving both mechanisms is required, so the mechanism of the entire apparatus becomes complicated. . Therefore, two covers (4) and (5) covering the recess (10) are provided to reduce the size of the apparatus and the mechanism.
[0018]
In this apparatus, since the procedure for mounting the disk from above the mechanism block (2) is the same as before, the usability is maintained. Also, when the cover (4) is opened, the mechanism block (2) protrudes from the upper surface of the cabinet (1) and operates unexpectedly for the user. Can do.
Further, since the mechanism block (2) protrudes from the upper surface of the cabinet (1), a portion where the speaker (90) and the operation panel (91) can be provided on the front surface of the cabinet (1) becomes wide. Therefore, it is possible to give a margin to the layout setting on the front surface of the cabinet (1). Further, since the elements constituting the mechanism for moving the mechanism block (2) are concentrated on the upper end of the cabinet (1), a space for providing the storage chamber (9) is secured at the lower end of the cabinet (1). it can.
Further, even when the disk is incompletely mounted on the mechanism block (2), the disk is prevented from dropping into the recess (10) by the receiving lever (6).
[0019]
In this example, a cam groove (14) is formed on the inner surface of the recess (10) of the cabinet (1), and the cam groove (14) is fitted from the base (20) of the mechanism block (2). The first fitting shaft (22) protrudes, but it is also conceivable to provide a cam groove (14) in the base (20) and provide the first fitting shaft (22) on the inner surface of the recess (10). However, if the cam groove (14) is opened in the base (20), the base (20) and the mechanism block (2) may be increased in size. Therefore, in this example, the above configuration is adopted.
[0020]
The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
[Brief description of the drawings]
FIG. 1 is a perspective view of a disk recording or reproducing apparatus.
FIG. 2 is an exploded perspective view of the above.
FIG. 3 is a sectional side view of the cabinet, showing a state in which the mechanism block is housed.
FIG. 4 is a sectional side view of the cabinet, showing a state in which the mechanism block is pulled out.
FIG. 5 is a sectional side view of the cabinet, showing a state in which the mechanism block is pulled out.
FIG. 6 is a sectional side view of the cabinet, showing a state in which the mechanism block is pulled out.
FIG. 7 is a cross-sectional side view of the cabinet, showing a state where the mechanism block has been pulled out.
FIGS. 8A and 8B are cross-sectional side views of a cabinet when both covers are integrated into a large cover.
FIG. 9 is a cross-sectional side view of a ball chucking structure.
FIG. 10 is a perspective view of a conventional disk recording or reproducing device.
FIG. 11 is a perspective view of another conventional disc recording or reproducing apparatus.
[Explanation of symbols]
(1) Cabinet
(2) Mechanism block
(4) Top cover
(5) Front cover
(6) Receiving lever
(8) Turntable
(14) Cam groove
(22) Fitting shaft
(52) Arm pieces

Claims (2)

In a disk device for recording or reproducing, wherein a mechanism block having a turntable is accommodated in a cabinet having an opening on the upper surface, the upper surface opening is covered by a cover pivotally supported by the cabinet.
A guide mechanism comprising a cam groove provided in one of the cabinet and the mechanism block, and a fitting shaft provided in the other and fitted in the cam groove;
The mechanism block is connected to the cover, is provided on the inner surface of the cabinet, and is provided so as to be able to move up and down along the guide mechanism. A disk device characterized in that it is provided so as to be movable between a second position that protrudes from the upper surface opening of the cabinet and assumes a recumbent posture in which the turntable faces upward.   The upper surface opening of the cabinet is covered by the cover and a front cover whose base end is pivotally supported by the cabinet and whose front end is in contact with the cover, and the rotation direction of the cover and the front cover during opening and closing is 2. The disk device according to claim 1, wherein the disk devices are in opposite directions within a plane parallel to a transition locus of the mechanism block.

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