JP2001184837A - Disk recording or reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the possibility that a disk drops into a space housing a mechanism block in a cabinet while maintaining the operability in mounting a disk. SOLUTION: The mechanism block 2 provided with a turntable 8 is interlocked to a cover 4 and is liftably disposed between a first position where the block is erected within the cabinet 1 along a cam groove 14 provided on the cabinet 1 inside surface and a second position where the block projects from the opening at the top surface of the cabinet 1 and the turntable 8 faces upward and attains a posture lying sideways. A receiving lever 6 which supports the disk is pivotally supported 61a at the bottom end of the mechanism block 2. The receiving lever 6 comes into contact with the cabinet 1 and turns to a direction where the lever is housed into the cabinet 1 in the state of arriving at the second position of the mechanism block 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc recording or reproducing apparatus for reproducing a signal by irradiating a signal surface with a beam of a pickup.

[0002]

2. Description of the Related Art FIG. 10 is a perspective view of a conventional disk recording or reproducing apparatus. This is a device called a so-called CD boombox, and a speaker (9) is provided on the front of the cabinet (1).
0) (90), and an operation panel (91) provided with a display for displaying a use state. The 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), and the mechanism block (2) is a turntable for rotating the disk D.
As is well known, a pickup (80) is provided so as to be able to approach and separate from the turntable (8). When playing the disc, the user opens the cover (4) and
(10) is exposed, and the disk D is placed on the turntable (8). As another type of the disc recording or reproducing apparatus, as shown in FIG. 11, a tray (92) for placing the disc D is provided in the cabinet so as to be freely retractable, and the disc D is placed on the drawn tray (92) from above. In some cases, the tray (92) is retracted.

[0003]

Various types of devices have been proposed for such a device. Regardless of the type of the device, when the disk D is mounted on the turntable (8), a cover is required. Open (4) or pull out the tray. That is, the operation of mounting the disk on the turntable (8) is a common operation, and there is no great difference in any device.
By the way, in such a device, a device having a short depth may be demanded from a commercial market. In such a device, if the device performs a strange operation when the disc is mounted on the turntable (8) and has a more distinctive characteristic than other devices, the applicant considers the user as a commercial product. We paid attention to the point that could attract the interest of. Specifically, a mechanism block is set up and stored in the cabinet to be vertically long and short in design. When loading a disc,
After the mechanism block protrudes upward, the mechanism block is placed in a substantially horizontal state, and a disk can be mounted from above.
However, if the mechanism block is pulled up from the inside of the cabinet, if the disk is incompletely mounted on the mechanism block, the disk may fall into the space that accommodates the mechanism block in the cabinet . On the other hand, the structure must be such that the disk can be easily mounted on the mechanism block. SUMMARY OF THE INVENTION An object of the present invention is to prevent the disk from falling into a space for accommodating a mechanism block in a cabinet while maintaining the ease of use when mounting the disk.

[0004]

A mechanism block (2) provided with a turntable (8) is connected to a cover (4) and moves along a guide mechanism provided on the inner surface of the cabinet (1). ) Is provided so as to be able to move up and down between a first position in which the turntable (8) protrudes from the upper surface opening of the cabinet (1) and is in a recumbent posture in which the turntable (8) faces upward. At the lower end of the mechanism block (2),
The receiving lever (6) for supporting the disc is pivoted (61a),
When the mechanism block (2) reaches the second position of the mechanism block (2), the receiving lever (6) contacts the cabinet (1) and rotates in a direction to be stored in the cabinet (1).

[0005]

[Function and Effect] Since the receiving lever (6) is provided at the lower end of the mechanism block (2), even if the disk is incompletely mounted on the mechanism block (2), the disk is not moved to the receiving lever (6). Supported. It is possible to prevent the disk from falling into the space for housing the mechanism block (2) in the cabinet (1). When the mechanism block (2) reaches the second position of the mechanism block (2), the receiving lever (6) contacts the cabinet (1) and rotates in a direction to be housed in the cabinet (1). If the receiving lever (6) is fixed to the mechanism block (2), the receiving lever (6) becomes an obstacle when a disc is mounted from below the mechanism block (2). Also, during the pull-out operation of the mechanism block (2), the cabinet
It is necessary to avoid contact between (1) and the receiving lever (6).
The cabinet (1) needs to escape the transition path of the receiving lever (6). That is, the cabinet (1) is enlarged accordingly. In the present invention, when the disc is mounted on the mechanism block (2), the receiving lever (6) is moved to the cabinet.
Since the receiving lever (6) is rotated in the direction in which it is stored in the disk (1), the receiving lever (6) does not become an obstacle when a disc is mounted, and the cabinet (1) can be prevented from being enlarged.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 the present embodiment, showing a state in which a disk can be mounted. 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 ends of the recess (10) are raised on the cabinet (1) to form protruding surfaces (18) and (18). From the top of the recess (10), a mechanism block with a turntable (8)
(2) projects the turntable (8) upward.
The mechanism block (2) includes a sub-chassis (21) on which a pickup (80) is mounted in addition to a turntable (8) via a vibration isolating member (not shown) made of rubber or the like. )
It is housed inside. This allows the pickup (8
The shock and vibration transmitted to 0) are reduced. Turntable
(8) has a ball chucking structure and grips the center of the disc. As shown in FIG. 9, the ball chucking structure is a known structure in which a ball (81) is biased outward from a side surface of a turntable (8) by a spring (82). When the center of D is inserted, the ball (81)
Presses and holds the peripheral edge of the center hole d1 of the disk D. FIG.
Front cover of the mechanism block (2)
(5) is provided, and as described later, the front cover (5) is opened and the mechanism block is opened from the top of the cabinet (1).
The feature of this example resides in that (2) protrudes.

FIG. 2 is an exploded perspective view of the same. A recess (10) is formed in the center of the upper surface of the cabinet (1), and the mechanism block (2) is stored in the recess (10) in an inclined and standing posture. On the inner surface of the concave portion (10), vertically long cam grooves (14) and (14) are opened, and the first fitting shafts (22) and (22) projecting outward from the base (20) are cam grooves ( 14) The mechanism block (2) is guided to slide by fitting into (14). Base (2
0), the second fitting shafts (23) and (23) project outward from above the first fitting shafts (22) and (22), and the receiving lever (6) is provided at the lower end. Be pivoted.

The receiving lever (6) is provided for receiving a falling disk when the disk is insufficiently mounted on the turntable (8), and is provided with a receiving recess which is recessed downward and can support the lower end of the disk. The fitting shaft (61) protrudes outward from the base end of the rod (60), and the guide shaft (62) protrudes from the distal end thereof. A hole formed at the lower end of the base (20) with the mating shaft (61)
(25) to form a pivot (61a) of the receiving lever (6). A torsion spring (not shown) is fitted on the fitting shaft (61), urges the receiving lever (6) clockwise, and is rotated by a stopper (26) located at the lower end of the base (20). Being regulated too. The guide shaft (62) fits into a concave strip (15) provided on the inner surface of the concave section (10) of the cabinet (1). If the receiving lever (6) is not provided, the disc dropped from the turntable (8) remains in the recess (10), which may not only take time to remove but also damage the disc. . Therefore, the receiving lever (6) is necessary for the purpose of preventing the disk from being damaged.

The upper surface of the recess (10) is covered by the top cover (4) and the front cover (5). Top cover
When the front cover (4) and the front cover (5) are closed, the upper surface is continuous with the projecting surface (18) of the cabinet (1). Top cover
The base ends of the cover (4) and the front cover (5) are pivotally supported (4a) and (5a) on the inner surface of the recess (10), respectively. ) Along the plane containing the transition path. In this example, the mechanism block (2) is opened by opening the top cover (4).
Protrudes with the turntable (8) facing upward. A gear (40) is provided at the base end of the top cover (4), and a pivot (4a) of the top cover (4) has a shaft (4) concentric with the gear (40).
2) is fitted into a hole (16) formed in the inner surface of the concave portion (10). Similarly, the pivot (5a) of the front cover (5)
Is a hole formed in the inner surface of the concave portion (10) with the shaft (53) at the base end.
(17). At the base end of the front cover (5), a wall plate (50) is provided toward the top cover (4).
The wall plate (50) is provided with a notch (51). Wall board (50)
Arm piece (52) extends downward from the receiving lever
In (6), the fitting shaft (61) is in contact with the arm piece (52). As a result, careless opening of the front cover (5) is restricted.

Inside the inner surface of the recess (10), vertical plates (11) (11) opposed to each other are erected, and a pivot (12) faces outward from the upper end of each vertical plate (11). It protrudes. Right vertical plate (1
On 1), a support shaft (13) protrudes from below the pivot (12). At the upper end of the mechanism block (2), a guide lever (3) for driving the mechanism block (2) is pivotally supported.
(3a), the pivot portion (3a) is formed by fitting a hole (31) formed at the tip of the guide lever (3) to the second fitting shaft (23) (23) of the mechanism block (2). You. A gear (30) is formed at the base end of the guide lever (3), and through holes (32) (32) formed in the center of the gear (30) are pivotally mounted on the vertical plates (11) (11). (12) (12)
Fit in. The gear (3) of the guide lever (3) is attached to the support shaft (13).
The drive gear (7) that meshes with 0) is fitted. The driving gear (7) is driven by a motor (not shown) to drive the gear (3) of the guide lever (3).
0) and the gear portion (40) of the top cover (4), and the guide lever (3) and the top cover (4) are rotated.

(Drawing Out Mechanism Block) FIGS. 3 to 7 are sectional side views of the cabinet (1) taken along the line AA in FIG. 1, and show a state in which the mechanism block (2) is pulled out. At the rear of the lower end of the cabinet (1), a storage chamber (9) is provided in which a battery for supplying power to the mechanism block (2) and circuit components is inserted. The drive gear
The (7) and the gear portion (40) of the top cover (4) are partially formed with toothless portions (70) and (41), respectively, and as shown in FIG. In the position where the top cover (4) and the front cover (5) are housed in each other, the tips of the top cover (4) and the front cover (5) abut each other and are closed. Missing part (70) of drive gear (7)
And the gear (30) of the guide lever (3) are opposed to each other.
(3) does not rotate, and the mechanism block (2) is not pulled out. The gear portion (40) of the top cover (4) meshes with the drive gear (7). A drawer completion detection switch (SW) is provided on the transition path of the mechanism block (2). As will be described later, when the mechanism block (2) is in the drawer completed state, the switch (SW) is pressed to turn on. The mounting position of the drawer completion detection switch (SW) is not limited to the position shown in FIG.

To draw out the draw-out start mechanism block (2) from the cabinet (1) and mount a disk on the mechanism block (2), the following procedure is performed. First, the operation panel (91) is operated to energize a motor (not shown), and the drive gear (7) in FIG. 3 is rotated counterclockwise. Top cover (4) is drive gear
Since it is engaged with (7), it is opened by rotating clockwise around the pivot (4a). However, the drive gear (7) has a missing tooth (70)
Is facing the gear (30) of the guide lever (3), the guide lever (3) does not rotate, and the mechanism block (2) connected to the guide lever (3) does not move. Receiving lever
In (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 connected to the pivot (5).
Prevent inadvertent opening around a).

As shown in FIG. 4, when the driving gear (7) further rotates counterclockwise, the top cover (4) is opened only by the gap where the mechanism block (2) projects. In the drive gear (7), the toothless portion (70) escapes in the counterclockwise direction, and starts to mesh with the gear (30) of the guide lever (3). The guide lever (3) rotates clockwise to pull up the mechanism block (2) along the cam groove (14). As shown in FIG. 5, the top cover (4)
Mechanism block from the gap between the front cover (5)
The upper end of (2) protrudes. The front cover (5) has not yet rotated in the opening direction. The receiving lever (6) is connected to the guide shaft (6
2) rises while maintaining the state fitted in the concave streak (15).

As shown in FIG. 6, the mechanism block
When (2) further moves up along the cam groove (14), the turntable (8) is exposed. The toothless part (70) of the drive gear (7) and the toothless part (41) of the gear part (40) of the top cover (4) face each other, and the top cover (4) no longer rotates clockwise. Then, the opening is completed. 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). As a result, the rotation of the front cover (5) in the opening direction is released. The guide shaft (62) of the receiving lever (6) contacts the upper end of the concave strip (15).

[0015] Drawer completed further drive gear (7) is rotated in the counterclockwise direction, the mechanism block (2) is pulled out, as shown in FIG. 7, receiving the lever engaging shafts (6) (61) Pushes the side edge of the notch (51) of the front cover (5) to open the front cover (5).
Also, the guide lever (62) of the receiving lever (6) is in contact with the wall plate (50),
The receiving lever (6) rotates counterclockwise against the bias of the spring. That is, the receiving lever (6) does not protrude from the cabinet (1). The mechanism block (2) presses 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).

The mechanism block (2) is a turntable
In the reclined state with (8) facing upward, the disc is stopped, and in this state, the disc is mounted on the turntable (8). The front cover (5) is open, so the disc turntable
It does not hinder the insertion or removal from (8). Also, receiving lever
(6) does not protrude from the cabinet (1) and does not hinder the insertion and removal of the disk. Rear edge X of recess (10) of cabinet (1)
And the bottom surface of the mechanism block (2) is in contact, so that when the disc is pressed against the turntable (8) and mounted, the bending of the mechanism block (2) can be prevented.
In FIG. 7, the mechanism block (2) is disposed obliquely upward, but it goes without saying that the mechanism block (2) 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 and the mechanism block (2) is stored in the cabinet (1). This step is
Since the operation opposite to the above is performed, detailed description will be omitted.

In this embodiment, the top opening of the cabinet (1) is covered with two sheets, a top cover (4) and a front cover (5). It is conceivable that the two covers (4) and (5) are integrated, but the applicant considers the cover to be as follows.
(4) and (5) are two. FIGS. 8A and 8B show both covers.
(4) It is sectional side view of the cabinet (1) in case (5) is integrated and it is set as the large cover (400). Large cover (400)
To open the mechanism block (2) from the top opening of the cabinet (1), the large cover (400) is
It is necessary to rotate in either direction A or B of (a). However, as shown by the dashed line in FIG.
When (0) is rotated in the direction A, the large cover (400) hits the rear end surface of the cabinet (1) and the wall surface of the storage room (9), so that the cabinet (1) needs to be enlarged. This goes against the demands of the market for downsizing of the device. In the above example, the mechanism block (2) is taken out in conjunction with the top cover (4). Temporarily large cover (400)
Is rotated in the direction B, as shown in FIG. 8 (b), the large cover (400) is opened and the mechanism block (2) is completed.
, The mechanism block (2) needs to be pulled out. That is, a mechanism for opening and closing the large-sized cover (400) and a mechanism for moving the mechanism block (2) in and out are separately required, and a drive source for driving each of the two mechanisms is required. . Therefore, the concave
By using two covers (4) and (5) to cover (10), the apparatus is downsized and the mechanism is simplified.

In this apparatus, the procedure for mounting the disk from above the mechanism block (2) is the same as the conventional procedure, so that the usability is maintained. Also cover
Opening (4) opens the mechanism block (2) to the cabinet
Since it protrudes from the upper surface of (1) and performs an unexpected operation for the user, the user's interest can be attracted from the strangeness of the operation. 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 arranged on the front surface of the cabinet (1) becomes wide. Therefore, it is possible to allow a margin in the layout setting of the front surface of the cabinet (1). Further, since the elements constituting the mechanism for moving the mechanism block (2) are concentrated at the upper end of the cabinet (1), a space for providing the storage room (9) is secured at the lower end of the cabinet (1). it can. Further, even if the disc is incompletely mounted on the mechanism block (2), the disc is prevented from dropping into the recess (10) by the receiving lever (6).

In this embodiment, the recess of the cabinet (1)
A cam groove (14) is opened on the inner surface of (10), and a first fitting shaft that fits into the cam groove (14) from the base (20) of the mechanism block (2).
Although the projection (22) protrudes, it is also conceivable to form 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), there is a possibility that the base (20) and the mechanism block (2) become large, and thus the above configuration is adopted in this example.

The description of the above embodiments is for the purpose of illustrating the present invention and should not be construed as limiting the invention described in the appended claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that 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 same.

FIG. 3 is a cross-sectional side view of the cabinet, showing a state in which a mechanism block is stored.

FIG. 4 is a cross-sectional side view of the cabinet, showing a state where a mechanism block is pulled out.

FIG. 5 is a sectional side view of the cabinet, showing a state in which a mechanism block is pulled out.

FIG. 6 is a cross-sectional side view of the cabinet, showing a state where a 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 to form a large cover.

FIG. 9 is a cross-sectional side view of the ball chucking structure.

FIG. 10 is a perspective view of a conventional disk recording or reproducing apparatus.

FIG. 11 is a perspective view of another conventional disk 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 piece

Claims (2)

[Claims] 1. A mechanism block (2) having a turntable (8) provided in a cabinet (1) having an opening on an upper surface.
In a disc recording or reproducing apparatus, the upper opening of which is covered by a cover (4) pivotally supported by the cabinet (1), the mechanism block (2) is connected to the cover (4), and the cabinet ( 1) A first position standing inside the cabinet (1) along a guide mechanism provided on the inner surface, and a recumbent posture in which the turntable (8) projects upward from the upper surface opening of the cabinet (1). The lower end of the mechanism block (2) is pivotally supported (61a) at the lower end of the mechanism block (2) to support the disk.
(6) is a disk recording or reproducing device which rotates in a direction accommodated in the cabinet (1) when the mechanism block (2) reaches the second position. 2. The guide mechanism is a cam groove provided in either the cabinet (1) or the mechanism block (2).
(14) and a fitting shaft (2) provided on the other side and fitted into the cam groove (14).
2. The disk recording or reproducing apparatus according to claim 1, comprising: