JP2001035054A - Disk recording/reproducing device housed in cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce vibration transmitted from a cabinet to a deck without any interference with the thinning of a device. SOLUTION: This disk recording/reproducing device is provided with an inner holder 3 for inserting a cartridge 6 housing a disk, an outer holder 3 moved back and forth and a pickup 75 in a cabinet 4, and a chassis 2 located below the inner holder 1. The chassis 1 is provided so as to be vertically moved with respect to the inner holder 2, and the inner holder 3 is fixed to the cabinet 4. Between the cabinet 4 and the inner holder 2, an elastically deformable damper 5 is provided, and the damper 5 communicates the cabinet 4 with the holder 2 through a through-hole 14 provided in the chassis 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recording or reproducing information via a disk in a cartridge.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 10, a disc (60) is accommodated in a rectangular cartridge (6), and a transparent window for exposing a part of the disc to one side of the cartridge (6).
(62) is used. Transparent window (62)
Opening and closing are switched by a shutter (61) that moves back and forth on the cartridge (6). A slit (64) is opened in the side of the cartridge (6) near the shutter (61), and the shutter (61) is locked to the cartridge (6) by a locking mechanism.
(Not shown). When the unlocking piece (29) provided in the device into which the cartridge (6) is inserted enters the slit (64), the lock is released and the shutter (61) is released.
Can be opened.

FIGS. 8 (a) and 8 (b) are front sectional views of a deck (100) and a cabinet (4) of a conventional disk recording / reproducing apparatus, and FIG. 9 is a diagram showing components of the deck (100). It is a perspective view. The deck (100) includes a cartridge (6) on a chassis (1) equipped with a turntable (76) and a pickup (75).
And an outer holder (3) that moves on the inner holder (2) in the cartridge insertion / ejection direction. As is well known, the pickup 75 moves in the radial direction of the disk while emitting a beam to the disk, and records and reproduces signals on the disk. The deck (100) is housed in a cabinet (4), and the chassis (1) is attached to the cabinet (4) via a damper (5) as a cushioning member. From the side wall of the inner holder (2), fit the shafts (21) (2)
1) protrudes outward, and the outer holder (3) and the side wall of the chassis (1) have inclined holes (34) and vertical holes (1) through which the fitting shaft (21) passes, respectively.
6) has been established. In the following description, the cartridge
The insertion direction of (6) is the front, and the ejection direction is the rear. The inner holder (2) moves up and down with respect to the chassis (1). Inner holder (2)
When the cartridge (6) is inserted into the cartridge and the outer holder (3) is pushed forward, the edge of the inclined hole (34) pushes the fitting shaft (21) to urge the inner holder (2). The inner holder (2) descends along the vertical hole (16). The cartridge (6) faces the pickup (75) on the chassis (1). When vibration or impact is applied to the cabinet (4) from the outside, the pickup (75) may be inadvertently moved, and a signal on the disk may not be recorded or reproduced correctly. As a countermeasure, the chassis (1) and cabinet
(4) The vibration transmitted to the deck (100) is reduced by the damper (5) provided between them.

[0004]

This type of device is required to be thinner, and the damper (5) connecting the chassis (1) and the cabinet (4) also needs to be thinner. However, in general, when the volume of the damper (5) is reduced, the effect of reducing the vibration is reduced. When the damper (5) is thin, the volume is reduced, so that the effect of reducing the vibration is reduced, and the cabinet (4)
Vibration applied to the deck (100) is easily transmitted. As a result, there is a possibility that the pickup (75) may be inadvertently moved and a signal may not be recorded and reproduced correctly. An object of the present invention is to reduce vibration transmitted from a cabinet to a deck without hindering a reduction in the thickness of the device.

[0005]

Means for Solving the Problems In addition to the disk recording or reproducing apparatus having the above structure, a damper (5) passes through a through hole (14) formed in a chassis (1) and a cabinet (4) and a holder. By connecting (2), the holder (2) becomes the damper (5)
Attached to the cabinet (4) through the
(1) is provided to be able to move up and down with respect to the holder (2).

[0006]

[Operation and Effect] The damper (5) penetrates the chassis (1) and connects the holder (2) located above the chassis (1) to the cabinet (4). 1)
The damper (5) can be made longer than in the conventional configuration in which the damper (5) is connected to the cabinet (4). Therefore, the volume of the damper (5) can be increased, and the effect of reducing the vibration is great. Therefore, the pickup (75) can record and reproduce a signal on the disk accurately. If the height from the cabinet (4) to the holder (2) is substantially the same as the height when the conventional holder (2) is completely lifted, the thickness of the cabinet (4) does not change. Therefore, it does not hinder the thinning of the device.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION (Overall Configuration) An example of the present invention will be described below in detail with reference to the drawings. In this example, the chassis (1) is provided so as to be able to move up and down, and the outer holder (3) is only allowed to move back and forth. The inner holder (2) is attached to the cabinet (4). This configuration has been previously disclosed by the applicant in Japanese Patent Application No. 9-3566.
No. 18 (this is an undisclosed invention), and in this example, as described later, the inner holder (2) and the cabinet
It is characterized in that a damper (5) is provided between (4). First, the outline of the apparatus will be described. FIG. 1 is a perspective view of the cartridge (6) and the cabinet (4). The cartridge (6) is inserted into the insertion slot (43) of the cabinet (4) with the opening / closing direction of the shutter (61) and the insertion direction of the cartridge (6) coincide with each other. Inside the insertion opening (43), the upper end of a rotating panel (42) closing the insertion opening (43) is pivotally supported. FIGS. 2A and 2B are side views showing the cartridge (6) and the rotating panel (42).
As shown in FIG. 2 (b), a deck (100) into which the cartridge (6) is inserted is provided in the cabinet (4). When the cartridge (6) is horizontally inserted into the cabinet (4) and stored in the deck (100), the free end of the rotating panel (42) is located above the rear end of the cartridge (6). , And the opening completion state is maintained. Cartridge (6)
In many cases, a label describing the name of the recorded information is attached to the rear end face, and the user can check the recorded information name with the cartridge (6) inserted into the cabinet (4). .

FIG. 3 is an exploded perspective view of the deck (100). The deck (100) has an inner holder (2) on which a cartridge (6) is inserted on a chassis (1), and slides back and forth on the inner holder (2) over the inner holder (2). Outer holder (3)
Equipped. Chassis details The chassis (1) has a pin that receives the bottom of the cartridge (6).
(77) (77), Pickup (75) and Turntable (76)
Are provided as is well known. Openings (12) in chassis (1)
The tip of the turntable (76) and the pickup (75) are exposed from the opening (12). Notches (13) and (13) and through holes (14) and (14) are opened at each corner of the chassis (1), and the inner holder (2) has notches (13) and (13) as described later. , Cabinet with dampers (5) (5) passing through through holes (14) (14)
It is attached to (4). The chassis (1) has support walls (11a) and (11b) erected on both sides, and three projections (10), (10) and (10) project inward from the support walls (11a) and (11b). ing. At the rear end of the right support wall (11b), a cam groove (15) inclined downward and forward is formed.

FIG. 4 is an exploded perspective view of the inner holder (2) and the outer holder (3). Mechanisms for raising and lowering the chassis (1) are provided on the side surfaces of the inner holder (2) and the outer holder (3), and this point will be described. A cam groove (30) inclined downward and forward is formed on the side surface of the external mechanism holder (3) for raising and lowering the chassis . A protrusion (32) projects inward from the front end of the right side surface of the outer holder (3), and a horizontal guide hole (36) is opened at the rear end. A fitting projection (37) projects outward from the rear side of the horizontal guide hole (36). The fitting projection (37) of the outer holder (3) is fitted to the cam groove (15) of the chassis (1).
(See FIG. 3). On the side of the inner holder (2), a vertical hole (23) facing the cam groove (30) of the outer holder (3), and the outer holder
Horizontal holes (24) into which the projections (32) of (3) fit are respectively opened. The fitting projection (37) of the outer holder (3) fits into the cam groove (15) of the chassis (1), and the projection (10) of the chassis (1) fits into the outer holder.
The chassis (1) is moved up and down by fitting in the cam groove (30) of (3) and the vertical hole (23) of the inner holder (2).

[0010] On the top surface of the outer holder (3), a 3
One slot (35) (35) (35) is opened, and the slot (35) (35) (35)
The shafts (28), (28), (28) protruding from the top surface of the inner holder (2) fit into the inner holder (2), and the outer holder (3) is guided for forward and backward movement. The operation piece (31) projects outward from the left side surface of the outer holder (3), and when ejecting the cartridge (6), the operation piece (31) is pulled backward. The lower ends of both side surfaces of the inner holder (2) are bent inward to form receiving plates (27) (27) that are in contact with the lower surface of the cartridge (6). The central portion of the right side surface of the inner holder (2) is bent inward to form an unlocking piece (29), and the unlocking piece (29) enters the slit (64) of the cartridge (6). To open the shutter (61) (see FIG. 10).

(Cartridge Ejection Mechanism) On the upper surface of the left end of the inner holder (2), a base end of a kicking lever (8) is pivoted (8).
a) Then, as shown in FIG. 3, the kick lever (8) is urged clockwise by a tension spring (85) hooked between the outer holder (3). The free end of the kick lever (8) is bent downward to form a push piece (80),
0) is from the circular hole (22) opened in the inner holder (2)
(2) and kicks out the cartridge (6) in the discharge direction. The ejection lever (8) is in contact with a stopper (33) erected from the outer holder (3), so that further rotation is restricted.
An opening (20) is formed on the upper surface of the inner holder (2), which is a passage window of a head for recording a signal on a disk.

FIGS. 5 (a) and 5 (b) are front sectional views of the cabinet (4), the inner holder (2), and the outer holder (3). The bottom of the cabinet (4) and the inner holder (2) are connected by dampers (5) (5) made of urethane rubber or the like.
(5) passes through the notch (13) or through hole (14) of the chassis (1). Between the chassis (1) and the bottom of the cabinet (4)
A circuit board (9) for supplying power to the pickup (75) and the turntable (76) is provided, and the circuit board (9) is provided with a damper (5).
(5). Even if vibration or impact is applied to the cabinet (4) from the outside, the vibration transmitted to the circuit board (9) is reduced by the damper (5). As described above, in this example, since the chassis (1) moves up and down, even if the inner holder (2) and the cabinet (4) are connected via the damper (5), the disc (60) in the cartridge (6) is not moved. There is no problem in recording and reproducing the signal in ()). The height C from the bottom surface of the cabinet (4) to the top surface of the outer holder (3) is the same as that of the conventional device shown in FIG.

(Insertion of Cartridge) FIGS. 6 (a) and 6 (b) are plan views of the mechanical deck (100), where (a) shows a cartridge not mounted state and (b) shows a cartridge mounted state. FIGS. 7A and 7B are side views of FIGS. 6A and 6B, respectively.
When the cartridge (6) is placed on the receiving plate (27) of the inner holder (2) and pushed into the inner holder (2) from the standby position shown in FIG. 6A, the front end face of the cartridge (6) is kicked. Extension lever (8)
Press the push piece (80) of and rotate it counterclockwise. The contact between the ejection lever (8) and the stopper (33) of the outer holder (3) is released, and the outer holder (3) is advanced by the tension spring (85).
As shown in FIG. 7 (b), the chassis (1) in which the projections (10) and (37) are fitted into the cam grooves (30) and (15) exerts an upward biasing force by the advance of the outer holder (3). Then, it rises directly along the vertical hole (23) of the inner holder (2) (see FIG. 5 (b)). Chassis (1)
Stops at positions where the protrusions (37) reach the upper ends of the cam grooves (15), respectively. The pickup (75) on the chassis (1) faces the disk in the cartridge (6), and recording and reproduction are performed in this state.

(Cartridge Ejection) When ejecting the cartridge (6) from the inner holder (2), the operation piece (31) of the outer holder (3) is pulled from the position shown in FIG. Withdraw manually against From the state shown in FIG.
The projection (10) of the chassis (1) fitted to the
The chassis (1) moves downward along the vertical hole (23). The pickup (75) moves away from the cartridge (6). FIG.
From the state shown in (b), the stopper (33) is pushed out by the lever (8).
And the kick lever (8) is rotated clockwise by the tension spring (85) to return to the original position shown in FIG. 6 (a). The pushing lever (8) pushes the cartridge (6) in the ejection direction with the pushing piece (80).

In this example, as shown in FIGS. 5 (a) and 5 (b), among the components of the chassis (1), the inner holder (2), and the outer holder (3), The inner holder (2), which is the third component, is connected to the bottom of the cabinet (4). Conventionally, as shown in FIGS. 8 (a) and 8 (b), the bottom of the chassis (1) and the bottom of the cabinet (4) are connected to each other. (5) can be made thicker. Vibrations and shocks applied to the cabinet (4) from outside are transmitted to the inner holder (2) via the damper (5), and transmitted from the inner holder (2) to the chassis (1). But damper
When (5) is thick and large in volume, the effect of attenuating the vibration increases, so that the vibration transmitted to the chassis (1) is reduced.
Also, since the height C of the outer holder 3 located at the highest position from the bottom surface of the cabinet 4 does not change as compared with the conventional case, even if the damper 5 is made thicker, the cabinet 4 can be made thinner. Do not disturb.

Here, in order to increase the volume of the damper (5), it is conceivable to increase the bottom area of the damper (5). However, in such a device, a reduction in thickness and a reduction in size of the device are also required, and providing a large bottom area of the damper (5) is contrary to the request for miniaturization. FIG.
In (a) and (b), the damper (5) is rod-shaped, but may have a constricted shape (not shown) at the middle portion in the thickness direction, for example, in order to enhance the vibration damping effect. At this time, the damper
If (5) is thin, it may be difficult to process the damper (5) into such a shape. However, by providing the damper (5) thickly, it becomes easy to change and process the shape of the damper (5).

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 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 cartridge and a cabinet.

FIG. 2 is a side view of a cartridge and a rotation panel,
(a) shows the cartridge unmounted state, and (b) shows the cartridge mounted state.

FIG. 3 is an exploded perspective view in which an inner holder and an outer holder of the mechanical deck are separated from a chassis.

FIG. 4 is an exploded perspective view of an inner holder and an outer holder.

FIGS. 5A and 5B are front cross-sectional views of a cabinet, an inner holder, and an outer holder, wherein FIG. 5A shows a cartridge unmounted state, and FIG. 5B shows a cartridge mounted state, respectively.

FIGS. 6A and 6B are plan views of the mechanical deck, in which FIG. 6A shows a state where the cartridge is not mounted, and FIG. 6B shows a state where the cartridge is mounted.

7 (a) and 7 (b) are side views of FIGS. 6 (a) and 6 (b), respectively.

8 (a) and 8 (b) are front sectional views of a conventional cabinet and deck, and FIG. 8 (a) shows a state where a cartridge is not mounted, and FIG.
Indicates the cartridge mounting state.

FIG. 9 is a perspective view of each component of a conventional deck.

FIG. 10 is a perspective view of a cartridge.

[Explanation of symbols]

 (1) Chassis (2) Inner holder (3) Outer holder (4) Cabinet (5) Damper (6) Cartridge (60) Disk (75) Pickup

Claims (2)

[Claims] 1. A holder (2) into which a cartridge (6) containing a disk (60) is inserted in a cabinet (4);
A deck (100) comprising a pickup (75) and a chassis (1) located below the holder (2), wherein the chassis (1) and the holder (2) are arranged so as to be able to approach and separate from each other; Between the bottom of the cabinet (4) and the deck (100),
In a disk recording or reproducing apparatus provided with an elastically deformable damper (5), the damper (5) passes through a through-hole (14) formed in a chassis (1) and passes through a cabinet (4) and a holder. By connecting (2), the holder (2) is connected to the cabinet via the damper (5).
A disk recording or reproducing apparatus mounted on (4) and provided with a chassis (1) capable of moving up and down with respect to a holder (2). 2. The recording or reproducing apparatus according to claim 1, wherein a circuit board (9) is mounted on the damper (5) between the chassis (1) and the bottom of the cabinet (4).