JPH039549B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to front loading disc players.

BACKGROUND ART When playing an information recording disk (hereinafter simply referred to as a disk) such as a digital audio disk, the user may hold the disk recording surface with his or her fingers, resulting in fingerprints or fingernails on the disk recording surface. There was an inconvenience that the recording surface was damaged by such things.

Therefore, we developed a system in which the disk is stored in a disk holder, and this disk holder is detachably attached to a mounting section in the player housing, and a disk transport mechanism that automatically transports the disk in the disk holder onto the turntable. A front-loading disc player has been proposed in which the user is not required to directly hold the disc, thereby allowing the user to enjoy a good performance.

In the front loading disc player, when transporting the disc in the disc holder to the performance position, that is, onto the turntable,
For example, the disk is moved in two directions, one parallel to the disk carrying surface of the turntable and one perpendicular thereto. In the front-loading disk player that has already been proposed, the disk conveyance mechanism for carrying out this conveyance is of a type that grasps the end of the disk in the direction of protrusion from the disk holder or approximately the entire disk and pulls it out of the disk holder. The structure of the disk transport mechanism, including the gripping mechanism for gripping the disk, is large and complicated, and the space required for its operation is large, resulting in an increase in the size and cost of the player as a whole. was.

A front loading disc player that solves this problem is disclosed in, for example, Japanese Utility Model Application No. 53-49412. Specifically, the front loading disc player includes a playing means provided in a player housing including a clamper and a turntable, and a disc that can accommodate a disc and is detachably inserted into a mounting section in the player housing. a holder, the disk holder comprising a holder housing having a tray protruding storage opening, and a holder housing capable of supporting a disk and rotatably attached to the holder housing and being connected to the holder housing through the tray protruding storage opening. It consists of a protruding storage tray. The playing means performs playing by holding a disk on a tray protruding outside the holder housing between the clamper and the turntable and driving it to rotate.

In the front loading disc player having the above structure, the tray is moved in and out by operating a knob that is connected to the tray and protrudes from the outer surface of the holder housing.

That is, in the above-mentioned front loading disc player, the tray carrying the disc is simply rotated to protrude from the holder housing, and the disc is transported in one direction (in the direction parallel to the disc carrying surface of the turntable). disk transport). Because of this structure, it is difficult to grasp the disk housed in the disk holder directly, and also to grip the end of the disk in the direction of protrusion from the disk holder or almost the entire disk, as in the previously developed front-loading disk player. Compared to a type in which the disk is gripped by a mechanism and pulled out of the disk holder, the structure for conveying the disk can be simplified and made smaller.

SUMMARY OF THE INVENTION An object of the present invention is to provide a front-loading disk player of the tray retracting type as described above, which achieves further miniaturization and cost reduction, and also provides an aesthetically pleasing appearance. The purpose of the present invention is to provide a front-loading disc player that can be used.

In the front loading disc player according to the present invention, the disc holder which can store the disc and is removably inserted into the mounting part in the player housing has a holder housing having a tray protruding storage opening and can support the disc. and a plate-shaped tray rotatably provided along the main surface of the holder housing and protruding from the holder housing through the tray protruding storage opening, and the playing means is provided outside the holder housing. The front-loading disc player is a front-loading disc player in which a disc on a protruding tray is held between a clamper and a turntable and is driven to rotate, and the holder housing accommodates the disc along with the tray protruding storage opening. a push-out position in which a disk transport mechanism having another opening at a position sandwiching the tray and moving the disk between the playing means and the disk holder is inserted into the holder housing through the other opening; The tray push-out member is provided movably between a non-extrusion position and abuts on the tray to push it out of the holder housing, and the push-out force applying means is configured to apply a push-out force to the tray push-out member. It is a feature.

Embodiments Hereinafter, a front loading disc player as an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG.
A rectangular slot 2a extending in the left-right direction is provided in the front panel portion 2 of the vehicle. However, the left and right direction referred to here refers to the front direction indicated by arrow Y. Therefore, the direction of arrow X in the figure indicates leftward, and the direction of arrow Z indicates upward. Also arranged on the front panel section 2 is a group of operation buttons 3 for operating the front loading disc player. A slot 2a formed in the front panel portion 2 is for inserting a disk holder or jacket 6 containing a disk to be played.

As shown in detail in FIG.
is a flat tray that holds an information recording disk 6 (hereinafter abbreviated as disk), that is, a holding section 8.
and a holder housing, ie, a storage section 10, which supports the holding section 8 so as to be swingable in a direction parallel to the main surface via a shaft 9, and can accommodate the holding section 8 together with the disk 6. These holding parts 8
and the storage portion are molded from synthetic resin or the like.
An opening 10 is provided in the side surface of the storage portion 10 near the shaft 9.
By pushing the holding part 8 through the opening with a tray pushing member (described later), the holding part 8 stored in the storage part 10 is pushed through the tray protruding storage opening 10c of the storage part. It is adapted to protrude to the outside of the storage section. Further, a small recess 8a is provided at the swinging end of the holding part 8, and the holding part 8 can also be pulled out from the storage part 10 by hooking a finger on this recess 8a. A substantially semicircular recess 8b is formed in the main surface of the holding portion 8, and the disk 6 is fitted into the recess. A notch 8c is formed on the bottom surface of the recess 8b corresponding to the center hole 6a of the disk 6 held by the holder 8.
is provided. Note that not only the notch 8c but also
For example, a circular opening may be provided.

The story goes back and forth, but as shown in FIGS. 2 and 3, a chassis 12 made of a steel plate or the like is fixedly installed inside the player housing 1. A pair of guide rails 13 and 14 are arranged on the upper surface of the chassis 12 on both sides of the insertion path for the jacket 5, and are fixed to the chassis 12. As is clear from FIGS. 3 and 5, each of the opposing surfaces of both guide rails 13 and 14 has a guide groove 13 into which the housing portion 10 of the jacket 5 can be inserted.
a and 14a are formed, respectively. As shown in FIG. 4, a sliding plate 16 is slidably attached to the left guide rail 13. A hanging portion 16a extending downward is formed at the rear end of the sliding plate 16. The hanging portion 16a is slidably engaged with a groove 13b provided in the guide rail 13. Further, the hanging portion 16a has a groove 13b.
It reaches into the guide groove 13a through the guide groove 13a, so that it can come into contact with the storage section 10 of the jacket 5.

A support shaft 17 is also fitted into the rear end of the sliding plate 16 and extends in the vertical direction.
The ring 17a prevents it from coming off the sliding plate 16. The support shaft 17
A lever member 18 is swingably supported. A protrusion 18b is provided at the tip of the swinging end 18a of the first lever member 18. This protrusion 18b
can come into contact with the holding part 8 of the jacket 5 inserted into the player housing 1 through an opening 10a provided in the storage part 10. The opening 10a is formed at a position sandwiching the accommodated holding part 8 together with a tray protruding storage opening 10c provided in the storage part 10 so that the holding part 8 serving as a tray can be exposed and retracted. And the first lever member 18
is rotatable between an extrusion position and a non-extrusion position in which it is inserted into the storage part 10 through the opening 10a, and also comes into contact with the holding part 8 as a tray to push it out of the storage part 10. Acts as a tray pusher. Further, a pin 18d extending downward is fixed to the other swinging end 18c of the first lever member 18. On the other hand, a protrusion 13c is fixed at a predetermined position on the side of the guide rail 13.
The pin 18d is configured to come into contact with a tapered surface 13d, which is a predetermined contact surface formed at the front end of the pin 3c. Note that this tapered surface 13d does not need to be provided with the guide rail 13, as long as it is fixed to the chassis 12, and thus the player housing 1.

A second lever member 20 is arranged above the first lever member 18, and is also supported by the support shaft 17 so as to be swingable. Second lever member 2
A pin 20a is provided protruding from the swinging end of the 0.
The lower surface of the second lever member 20 has an opening 18 formed at the other swinging end 18c of the first lever member 18.
An engagement protrusion 20b is provided that slidably engages with e.

A spring member 22 is further fitted onto the support shaft 17. One end of the spring member 22 is a protrusion 18f protruding from the other swinging end 18c of the first lever member 18.
Furthermore, the other end portions of the spring members are respectively engaged with protrusions 20c formed on the second lever member 20. The spring member 22 biases the first and second lever members in a direction in which the swinging end portion 18 of the first lever member 18 and the swinging end portion of the second lever member 20 approach each other. Therefore, as shown in FIG. 2, the holding portion 8 of the jacket 5 is held between the swinging end portion 18a of the first lever member 18 and the swinging end portion of the second lever member 20. It's summery.

As shown in FIGS. 2 and 4, a coil spring 23 is connected to the first lever member 18 to apply a bias force to the first lever member in the counterclockwise direction in FIG. Further, the second lever member 20 has an engaging protrusion 20b protruding from the swinging end thereof, which is connected to the opening 18e of the first lever member 18.
Since it is slidably engaged with the engaging protrusion 2
A bias force is applied by the coil spring 23 in the counterclockwise direction in FIG.

By the above-mentioned guide rails 13 and 14, sliding plate 16, first lever member 18, second lever member 20, spring member 22, coil spring 23, and peripheral small members related to these. , a guide conveyance means, ie, a tray drive means, is constructed as a disk conveyance mechanism that guides the jacket 5 inserted from the slot 2a and conveys the disk 6 to or very close to the performance position.

Next, the playing means for playing the disc will be explained.

As shown in FIGS. 2 and 3, a sub-chassis 26 is arranged below the chassis 12. The sub-chassis 26 is swingably attached to the lower surface of the chassis 12 via a bearing member 27 and a support shaft 28 at its right end.
As is particularly clear in FIG. 3, a spindle motor 29 is fixed to the swinging end of the sub-chassis 26 via a support column 29a, and a turntable 30 is fitted onto the output shaft of the spindle motor. There is. On the sub chassis 26 is a disk 6.
A carriage 32 is provided carrying pick-up means (not shown) for reading information from. However, various types of pickup means may be used depending on the type of disk. The carriage 32 is slidably supported by a guide shaft 33 fixedly installed on the sub-chassis 26 and extending in the left-right direction. Also, the carriage 32
A rack portion 32a extending in the direction of movement of the carriage is fixed to the right end of the carriage. A drive mechanism including a gear 35 that meshes with the rack portion 32a is provided, and the carriage 32 is driven by the drive mechanism.

The sub chassis 26 and the bearing member 27
, the support shaft 28, the spindle motor 29, the turntable 30, the carriage 32, the rack part 32a, the guide shaft 33, and the peripheral small members related to these, the playing means performs the disk performance. Some are configured.

A moving plate 37 is located in front of the sub chassis 26.
is provided so as to be movable in the left and right directions.
The movable plate 37 has a protruding pin 37a that slidably engages with a cam hole (not shown) formed in the sub-chassis 26, and as the movable plate moves, the sub-chassis 26 swings up and down. It's starting to move. A rack portion 37b is formed at the front end of the movable plate 37. A drive mechanism including a gear 38 that meshes with the rack portion 37b is provided, and the moving plate 37 and therefore the sub-chassis 26 are driven by the drive mechanism. In addition, as shown in FIG. 3, the turntable 3
A clamper or pressing member 40, which cooperates with the turntable and performs a disk clamping action, is rotatably supported above the turntable by a support mechanism (not shown).

A lock lever 42 is rotatably provided at the right end of the chassis 12 via a shaft 42a. This lock lever 42 is used to prevent the jacket 5 inserted into the housing 1 from being pulled out during disc play, and has a locking recess 10b formed in the housing section 10 of the jacket 5 at its front end. A locking protrusion 42b that can be engaged with is provided. Further, at the rear end of the lock lever 42, a prohibition protrusion 42c that comes into contact with the moving plate 37 moving to the right during disc play and prohibits the lock lever 42 from rotating clockwise in FIG. 2.
is formed. The lock lever 42 is biased counterclockwise in FIG. 2 by a coil spring 43.

In addition, as shown in FIG. 2, the chassis 26
A detection switch 45 for detecting that the disk 6 is positioned directly above the turntable 30 is arranged on the left side of the rear end. Although not shown, a detection switch is provided to detect when the carriage 32 has reached its travel limit. Detection signals emitted from these detection switches are transmitted to a control section (not shown) provided at a predetermined position within the player housing 1. The drive mechanism that drives the spindle motor 29 and the carriage 32 and the drive mechanism that drives the moving plate 37 operate at predetermined timings to be described later based on operation signals sent from the control section in response to each of these detection signals. be.

Next, the operation of the front loading disk player including the jacket 5 having the above-described structure will be briefly explained along with the playing procedure with reference to the drawings.

First, insert the jacket 5 to the position shown by the two-dot chain line in FIG. Then, the housing portion 10 of the jacket 5 comes into contact with a hanging portion 16a (see FIG. 4) formed on the sliding plate 16.
Therefore, by further inserting the jacket 5, the sliding plate 16 is pushed and begins to move rearward. As the sliding plate 16 moves backward, the first
A pin 18d protruding from the other swinging end 18c of the lever member 18 comes into contact with the tapered surface 13d of the protrusion 13c. As the jacket 5 is further pushed, the pin 18d slides on the tapered surface 13d, so that the first lever member 18 is swung clockwise in FIG. 18
a is inserted through the opening 10a of the storage section 10. Therefore, the holding portion 8 of the jacket 5 is pushed out by the swinging end portion 18a of the first lever member 18, and the disk 6 is conveyed directly above the turntable 30. At this time, the holding portion 8 is held between the swinging end portion of the first lever member 18 and the swinging end portion of the second lever member 20 .

At the same time as the holding part 8 is pushed out, the holding part contacts the detection switch 45 and operates the detection switch. Then, the moving plate 37 is driven to the right, and the sub chassis 2, which is at the lower limit position, is moved to the right.
6 swings upward. Therefore, the disk 6 is separated from the holding part 8 and placed on the turntable 30, and at the same time the disk is clamped. Next, when the performance start button is pressed, the spindle motor 29 starts rotating, the carriage 32 starts moving, and the performance is performed.

When the performance ends and the button for retrieving the jacket 5 and disk is pressed, the carriage 32 and sub chassis 26 are returned to their pre-performance positions by following the exact opposite process to that described above. Also, lock lever 4
Since the engagement between the second inhibiting protrusion 42c and the moving plate 37 is also released, the jacket 5 can be pulled out of the player housing. At the same time as the jacket 5 is pulled out, the first lever member 18 and the second lever member 20 are swung counterclockwise in FIG. 2 by the biasing force of the coil spring 23 and return to the position before the jacket was inserted. Therefore, the holding portion 8 and the disk 6 are stored in the storage portion 10 by the second lever member 20 as the jacket 5 is pulled out.

The jacket 5 and disk 6 are thus recovered.

As described in detail above, in the front loading disc player according to the present invention, the holder housing of the disc holder is formed with the tray protruding storage opening and another opening at a position sandwiching the stored tray. The tray pushing member is inserted into the holder housing through the holder housing to push the tray out.

Because of this configuration, there is no need to provide a knob or the like protruding from the outer surface of the holder housing for pushing the tray out of the holder housing as in the conventional configuration. Therefore, the insertion opening (slot) formed in the player housing for inserting the disk holder does not have to have a complicated shape and can be simply made into an elongated straight line, so that a beautiful external appearance of the player can be obtained. At the same time, since there are no knobs or the like protruding from the outer surface of the holder housing, the disc holder can be made thinner, and the overall thickness of the player having an internal space into which the disc holder is mounted can be made thinner.

In addition, since the disk is transported in one direction by rotating the tray, which is an extremely simple operation, the configuration is simpler and costs can be further reduced. be.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing a state in which a jacket according to the present invention is inserted into a front loading disc player, and FIGS. 2 and 3 are partial cross-sectional views showing the internal structure of the jacket and the front loading disc player. FIG. 4 is a detailed view of essential parts of the internal structure, and FIG. 5 is a perspective view of the jacket according to the present invention. Explanation of symbols of main parts: 1... Player housing, 2a... Slot, 5... Jacket (disk holder), 6... Disk, 6a... Center hole, 8... Holding part (tray), 9... Axis, 10...
... Storage part (holder housing), 12 ... Chassis, 13, 14 ... Guide rail, 16 ... Sliding plate, 17 ... Support shaft, 18 ... First lever member (tray pushing member), 18a ... one end of the swing;
18c...Other swinging end, 20...Second lever member, 22...Spring member, 23, 43...Coil spring, 26...Sub chassis, 29...Spindle motor, 30...Turntable, 32...
...Carriage, 33...Guide shaft, 37...
...Moving plate, 40...Press member (clamper),
42...Lock lever, 45...Detection switch.

Claims (1)

[Claims] 1. A playing means provided in a player housing including a clamper and a turntable, a disk holder capable of storing a disk and detachably inserted into a mounting portion in the player housing, and the playing means and the disk holder. a disk transport mechanism for moving the disk between the disk holder and the disk holder; and a plate-shaped tray that can be freely protruded and stored in the holder housing through the tray protruding storage opening, and the playing means moves a disk on the tray that protrudes outside the holder housing to the clamper and the turntable. The holder housing is a front-loading disc player which is held between the holder housing and the player and played by rotating the holder housing, the holder housing having the tray protruding storage opening and another opening at a position sandwiching the stored tray. , the disk transport mechanism is movable between an extrusion position in which the disk is inserted into the holder housing through the other opening and a non-extrusion position, and is in contact with the tray and extrudes it out of the holder housing. A front loading disk player comprising a tray pushing member and a pushing force applying means for applying pushing force to the tray pushing member.