JP3389591B2 - Disc player - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player for reproducing, recording or erasing an optical disc such as a CD or a magneto-optical disc (hereinafter referred to as a disc).

[0002]

2. Description of the Related Art A conventional disc player of this type is shown in FIG. In this, a disc supporting tray 2 is arranged in a casing 1 so as to be movable in the front-rear directions a and b, and a disc D is set on a circular concave portion 2a of the tray 2 protruding forward from the casing 1. After that, the tray 2 is retracted into the housing 1, and the information recorded on the disk D on the tray 2 is read by the drive mechanism in the housing 1.

Depending on the situation of the place of use, the disc player is placed in a horizontal position (see the figure) in which the bottom surface 1a of the housing 1 is grounded or in a vertical position in which one side surface 1b of the housing is grounded. In the vertically placed state, the disc D is disengaged from the recess 2a simply by setting the disc D in the recess 2a of the tray 2.

Therefore, a plurality of locking pieces 3 are pivotally mounted on the upper surface of the tray 2 along the recess 2a at predetermined intervals in the circumferential direction via a pivot shaft 4 so as to be rotatable. In the vertically placed state, the tip of each locking piece 3 is projected toward the recess 2a side (see the phantom line in FIG. 12) to allow the disc D to be removed from the recess 2.
I try not to come off.

[0005]

SUMMARY OF THE INVENTION In the above conventional configuration,
It is necessary to manually operate each locking piece 3, which is troublesome and troublesome.

Therefore, as shown in FIG. 13, a pair of slide pieces 5 are formed on the upper surface of the tray 2 with the recess 2a interposed therebetween, as shown by arrows a,
It is considered to be slidable in the b direction. According to this, the tip end portion of each slide piece 5 is provided with the recess 2
By making it protrude toward the a side (see the phantom line in FIG. 13), the disc D is prevented from coming out of the recess 2a, and
When the tray 2 is retracted into the housing 1, the slide piece driving mechanism in the housing 1 retracts each slide piece 5 to the outside of the recess 2a (see the solid line in FIG. 13) to move each slide piece 5 The disc D is not touched.

In the above structure, the structure of the slide piece drive mechanism provided in the housing 1 is complicated, the number of parts is large, and the manufacturing cost is high.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a disk player having a simple structure, a small number of parts, and a low manufacturing cost.

[0009]

In order to achieve the above object, the invention according to claim 1 is such that a disc supporting tray is provided in a casing so as to be able to move forward and backward, and the disc is set on the tray. A drive mechanism for reading the information recorded on the housing is arranged in the housing so that the bottom surface of the housing is grounded horizontally or one side of the housing is grounded vertically. In the disc player described above, a support claw that supports the lower edge of the disc is projected on the tray so that the disc on the tray does not fall down when the casing is placed vertically, and the tray is retracted into the casing. A disc pushing-up cam that pushes up the disc and disengages the lower edge of the disc from the supporting claw is provided in the casing, and the tray is placed in a vertically placed state of the casing.
The disc on the tray fell over when retracted into the housing.
It is characterized in that a support piece is provided on the housing so as not to support it .

According to the above construction, when the housing is placed vertically,
When the disc is set on the tray that is projected forward from the housing, the lower edge of the disc is supported by the support claws protruding from the tray, and the disc can be prevented from coming off the tray. Next, by retracting the tray into the casing, the disc pushing-up cam provided in the casing pushes up the disc, and the lower edge portion of the disc can be detached from the supporting claw. Since the disk is not in contact with the disk, the information on the disk can be reliably read by the drive mechanism.

In this case, only the supporting claws are provided on the tray and the disc pushing cam is provided on the housing, so that the structure is simple, the number of parts is small, and the manufacturing cost can be reduced.

Further, when the tray is retracted into the housing in a state where the housing is placed vertically, and the support of the disk by the supporting claw is canceled as described above, instead, the supporting piece provided on the housing is used. Since the disk is supported, there is no risk of the disk falling over unexpectedly, and the information on the disk can be reliably read by the drive mechanism.

According to a second aspect of the present invention, in the first aspect of the present invention, the supporting piece is provided on the housing so as to be movable along a direction orthogonal to the moving direction of the tray and is urged toward the tray. The tray is provided with a support piece pushing cam that pushes the support piece against the urging force when the tray is retracted into the housing.

According to the above structure, the supporting piece can be elastically pressed against the side surface of the disk to prevent the disk from coming out of the predetermined position on the tray, and the supporting piece pushing cam moves the supporting piece. By pushing out against the biasing force, it is possible to prevent the edge of the disc from hitting the support piece and preventing the disc from falling over.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described in (3), there is provided a support piece separating means for separating the support piece from the disk on the tray against the biasing force in association with the movement of the drive mechanism to the disk information reading position. It has a feature.

According to the above arrangement, when the information on the disc is read by the drive mechanism, the supporting piece separating means separates the supporting piece from the disk, so that the information on the disk can be accurately read.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 11 shows a disc player according to an embodiment of the present invention, in which a disc supporting tray 2 is arranged in a casing 1 so as to be movable in the front-rear direction a, b. The bottom surface 1a is placed in a horizontal position (shown in the drawing) or the one side surface 1b of the housing 1 is grounded in a vertical position (see FIG. 1).

As shown in FIGS. 1 and 2, a drive mechanism 6 for reading information recorded on the disc D on the tray 2 and a posture of the drive mechanism 6 are changed in the housing 1. A cam mechanism 7 for doing so and a disk support device 8 for supporting the disk D on the tray 2 when the housing 1 is placed vertically are provided.

As shown in FIGS. 1 and 4, the tray 2 has a tray main body 2A having a substantially flat U-shaped cross section in which a recess 2a for setting a disk D is formed, and both side edges of the tray main body 2A. A plurality of (or one) support claws 9 are provided on the outer peripheral edge of the recess 2a so as to be close to the one side surface 1b of the housing 1. .

The housing 1 is, as shown in FIGS. 1 and 4,
It has left and right side walls 1A and 1B having a substantially L-shaped cross section for movably supporting the edge plate portions 2B and 2C of the tray 2, and faces the drive mechanism 6 on the side wall 1B on the one side surface 1b side of the housing 1. An arcuate disk pushing-up cam 10 that bends forward and outward is provided.

According to the above-mentioned structure, when the disc D is set on the tray 2 protruding forward from the casing 1 in the vertically placed state of the casing 1, the lower edge of the disc D is supported by the supporting claws 9. The disc D can be supported so that it does not come off the tray 2 (see the phantom line in FIG. 1). Next, the tray 2 is retracted into the housing 1 to push up the disc D by the disc pushing-up cam 10,
The lower edge of the disk D can be detached from the support claw 9 (see the solid line in FIG. 1).

In this case, the supporting claws 9 are provided on the tray 2 and the disc pushing-up cam 10 is provided on the housing 1, so that the structure is simple, the number of parts is small, and the manufacturing cost is low. You can

As shown in FIGS. 2 and 5, the drive mechanism 6 includes a support frame 12, a turntable 14 fixed to a drive shaft of a spindle motor 13 disposed in a front portion of the support frame 12, and a support. By rotating the optical pickup 15 provided in the central through hole 12a of the frame 12 and the screw shaft 16 screwed to the nut portion 15a provided in the optical pickup 15 in the forward and reverse directions, the optical pickup 15 is moved to the diameter of the disk D. Through the through hole 2b of the tray 2 by moving the support frame 12 from the inclined state (see FIG. 2) to the horizontal state (see FIG. 3).
The disk D on the tray 2 is slightly lifted by the turntable 14 through the disk, and the disk holder 19 which is vertically movably supported by the erection frame 18 erected on the housing 1 is also lifted via the disk D. The disc D can be held between the holder 19 and the turntable 14, and then the information recorded on the disc D can be read by moving the optical pickup 15.

As shown in FIGS. 1 and 5, the cam mechanism 7 has a cam rod 20 and a lift arm 21, and the cam rod 20 has a direction c, which is orthogonal to the moving directions a and b of the tray 2. A cam groove 22 having an upper groove portion 22a and a lower groove portion 22b is formed on the side surface of the cam rod 20 facing the drive mechanism 6 along the moving direction while being configured to be capable of reciprocating along d. ,Also,
The lift arm 21 is formed in a substantially U shape in a plan view,
The housing 1 is provided with pivot shafts 23, 23 projecting from both sides thereof.
A cam floor 24, which is pivotably supported by the cam, and projects forward from the lift arm 21 is engaged with the cam groove 22.

Further, as shown in FIG. 5, the upper annular grooves 25a of the four cylindrical elastic bodies 25 made of rubber or the like are engaged with the engaging recesses 12b formed at the four corners of the support frame 12, and each of them is engaged. The engaging recess 26 in which the lower end annular groove 25b of the elastic body 25 is formed in the rear portion of the housing 1 and the lift arm 21.
The drive mechanism 6 is connected to the housing 1 and the lift arm 21 via each elastic body 25 by engaging with the engaging recesses 27 formed at both ends 21a and 21b.

In the above structure, from the state shown in FIG.
By rotating the drive pinion 29 meshing with the rack portion 28 of the cam rod 20 in the counterclockwise direction and moving the cam rod 20 in the direction of arrow d, the cam floor 24 engages with the upper groove portion 22a of the cam groove 22, Drive mechanism 6
Is tilted (see FIG. 2), and from this state, the drive pinion 29 is rotated in the clockwise direction to move the cam rod 20 in the direction of arrow c.
Engages with the lower groove portion 22b of the cam groove 22, and the lift arm 21 is rotated upward about the pivot shafts 23, 23,
The drive mechanism 6 moves up around the rear elastic body 25 and is held at the disc information reading position in the horizontal posture (see FIG. 3).

The disk support device 8 will be described. As shown in FIGS. 4, 6 and 7, the side wall 1B on the side surface 1b of the housing 1 is adjacent to the rear side of the disk pushing cam 10. A supporting piece 30 is provided, and the supporting piece 30 may be fixed to the side wall 1B. However, in this embodiment, the supporting piece 30 is formed along the direction orthogonal to the moving direction of the tray 2 in the side wall 1B. It is fixed to one end of a slider 32 arranged in the groove 31. In addition, it opposes the other end of the slider 32 so as to face the operating rod (supporting piece separating means) 33 (see FIG. 1) extending from the one end 21b of the lift arm 21 toward the one side surface 1b of the housing 1. A plate 34 is fixed, and a spring 35 for urging the support piece 30 toward the tray 2 is stretched between the slider 32 and the side wall 1B of the housing 1.

The slider 32 is movable in the directions of arrows c and d by fitting the protrusions 32a protruding on both side surfaces thereof into the guide grooves 31a formed on both side surfaces of the concave groove 31.

The supporting piece 30 extends toward the disc pushing-up cam 10, and inclined surfaces 30a and 30b are formed at both front and rear ends thereof, and both inclined surfaces 30a and 30b are formed.
A trapezoidal support piece pushing-out cam 36 is projectingly provided on the edge plate portion 2C of the tray 2 so as to face b, and when the supporting piece pushing-out cam 36 contacts the inclined surfaces 30a and 30b, the support piece 30 is springed. It is adapted to be pushed out in the direction of arrow d against 35.

According to the above structure, the support piece 30 can be elastically pressed against the side surface of the disc D (see FIG. 7) so that the disc D cannot be removed from the predetermined position on the tray 2. As shown in FIG. 8, the support piece pushing cam 36 pushes the support piece 30 against the spring 35 to prevent the edge of the disk D from hitting the support piece 30 and prevent the disk D from falling. You can

When the drive mechanism 6 holds the tilted posture (see FIG. 2), the operating rod 33 has a contact plate 34.
(See FIG. 7), the drive mechanism 6 moves from this state to the disc information reading position (see FIG. 3), and in response to this, pushes the contact plate 34 against the spring 35, The supporting piece 30 is separated from the disk D on the tray 2 (see FIG. 9).

According to the above configuration, when the drive mechanism 6 reads the information on the disc D, the support piece 30 is not brought into contact with the disc D, and the information on the disc D can be read accurately.

The mounting procedure of the disk D when the housing 1 is placed vertically will be described. As shown in FIG. 10 (a), the disk D is placed in the recess 2a of the tray 2 protruding forward from the housing 1. When the disc is set, the lower edge portion of the disc D is supported by the support claws 9 protruding from the tray 2, and the disc D can be prevented from coming off the tray 2. Next, as shown in FIG.
When the support piece 30 comes into contact with the support piece push-out cam 36 during the backward movement,
0 is pushed against the spring 35 to a position where it does not hit the edge of the disk D (see FIG. 8). Then, the same figure (c)
As shown in FIG. 3, the bottom edge of the disc D is pushed up on the disc pushing-up cam 10 by retracting the tray 2 to the end so that the disc D is pushed up and the lower edge of the disc D is separated from the support claw 9. Let In this state, since the supporting piece 30 passes over the supporting piece pushing cam 36, the supporting piece 30 contacts the side surface of the disk D and prevents the disk D from falling (see FIG. 7). ).

Thereafter, when the drive mechanism 6 in the inclined posture (see FIG. 2) moves to the disc information reading position (see FIG. 3), the operating rod 33 causes the contact plate 34 to resist the spring 35 in conjunction with it. The support piece 30 is pushed out and separated from the disk D on the tray 2 (see FIG. 9). As a result, when the information on the disc D is read by the drive mechanism 6, the support piece 30 does not contact the disc D, and the information on the disc D can be read accurately.

[0035]

According to the first aspect of the invention, in order to prevent the disc set on the tray from falling when the casing is placed vertically, the tray is provided with the supporting claws and the disc is mounted on the casing. Since only the lifting cam is provided, the structure is simple, the number of parts is small, and the manufacturing cost can be reduced.

Further, when the tray is retracted into the housing in a state where the housing is placed vertically, and the support of the disk by the supporting claw is canceled as described above, the supporting piece provided on the housing instead replaces the support piece. Since the disk is supported, there is no risk of the disk falling over unexpectedly, and the information on the disk can be reliably read by the drive mechanism.

According to the second aspect of the present invention, the support piece can be elastically pressed against the side surface of the disc to prevent the disc from being disengaged from the predetermined position on the tray, and the support piece pushing cam is used. By pushing the support piece against the urging force, it is possible to prevent the edge of the disk from hitting the support piece and the disk from falling.

According to the third aspect of the invention, when the information on the disc is read by the drive mechanism, the support piece separating means separates the support piece from the disk, so that the information on the disk can be accurately read.

[Brief description of drawings]

FIG. 1 is a side view of a disc player according to an embodiment of the present invention in a vertically placed state.

FIG. 2 is a transverse cross-sectional view of the drive mechanism in a tilted state.

FIG. 3 is a horizontal cross-sectional view of the drive mechanism in a horizontal state.

FIG. 4 is an exploded perspective view of the main part.

FIG. 5 is an exploded perspective view of the drive mechanism.

FIG. 6 is a plan view of the disc support device.

FIG. 7 is a cross-sectional view of the disc support device.

FIG. 8 is a transverse cross-sectional view showing a state in which a support piece of the disc support device is pushed out by a support piece pushing cam.

FIG. 9 is a transverse cross-sectional view showing a state in which a supporting piece of the disc supporting device is pushed out by an operating rod.

10 (a) and 10 (b) are schematic side views showing a mounting procedure of the disc.

FIG. 11 is a perspective view of the disc player.

FIG. 12 is a perspective view showing an example of a conventional disc player.

FIG. 13 is a perspective view showing another conventional example of a disc player.

[Explanation of symbols] 1 case 1a Bottom of case 1b One side of housing 2 trays 6 Drive mechanism 8 Disk support device 9 Support claws 10 Disc lifting cam 30 support pieces 33 Operating rod (supporting piece separating means) 35 spring 36 Supporting piece pushing cam

Claims (3)

(57) [Claims] 1. A disc supporting tray is provided in the casing so as to be able to move forward and backward, and a drive mechanism for reading information recorded on a disc set on the tray is provided in the casing. In a disc player in which the bottom surface of the housing is grounded horizontally or one side of the housing is grounded vertically,
A support claw that supports the lower edge of the disc is provided on the tray so that the disc on the tray does not fall down when the casing is placed vertically, and the disc is moved when the tray is retracted into the casing. A disc push-up cam that pushes up and lowers the lower edge of the disc from the support claw is provided in the casing, and the tray is retracted into the casing when the casing is placed vertically.
Support so that the disc on the tray does not fall
A disc player, wherein a supporting piece to be held is provided on a housing . 2. The supporting piece is movably provided on the housing along a direction orthogonal to the moving direction of the tray and is biased toward the tray so that when the tray is retracted into the housing, disc player according to claim 1, wherein the support piece extrusion cam to push against the support piece biasing force, characterized in that provided in the tray. 3. A support piece separating means is provided for separating the support piece from the disk on the tray against the biasing force in association with the movement of the drive mechanism to the disk information reading position. Claim 1 or 2
Disc player described in.