JPS62283446A - Multidisk player - Google Patents

Abstract

PURPOSE:To attain a stable drive by providing a magnet giving the clamp force to a turntable and arranging a motor supporting plate made of a magnetic material to a counter disk face, thereby approaching a motor output shaft and a bearing. CONSTITUTION:A magnet 23b generating the clamp force to the pressing member 80 of a clamp mechanism is provided to the turntable 23. Further, a supporting plate 22 supporting a spindle motor 25 and the turntable 23 is made of a magnetic material, arranged to the counter disk face of the table 23, which is attracted to the supporting plate 22 by the magnetic force of the magnet 23b. Through the arrangement structure as above, since the output shaft 25a of the spindle motor 25 and the bearing supporting the shaft are arranged nearby, the inexpensive stable rotation is realized without generating vibration and requiring any special member.

Description

[Detailed description of the invention] 3. Detailed description of the invention 1 did 1 The present invention relates to a disc player.

2. Description of the Related Art Some disc players that play discs such as digital audio discs have a turntable that is directly driven by a spindle motor.

When manufacturing a spindle motor, a gap of typically 10 μm is created between the output shaft of the spindle motor and a bearing that rotatably supports the output shaft.

On the other hand, in a disc player, a disc placed on a turntable is clamped by a disc-shaped pressing member, and in particular, the disc is clamped by attracting the pressing member to the turntable using the magnetic force of a magnet. In the case of this type, no force is generated to bring the output shaft of the spindle Tanabata and the bearing portion into close contact with each other. Therefore, if the spindle motor as manufactured is used, the turntable will rotate while swinging within the above-mentioned gap range. Therefore, a special means for bringing the output shaft of the spindle motor and the bearing portion into close contact with each other is provided.

Already proposed close contact means include, for example, a type in which a rotatably supported idler is brought into contact with the outer periphery of the turntable, but this requires a large number of parts and is expensive.

Reach! The present invention has been made in view of the above points, and its object is to provide a low-cost disc player.

In the disc player according to the present invention, a magnet that generates a disc clamping force is provided on the turntable, a holding member that supports the turntable and holds a spindle motor that rotationally drives the turntable is made of a steel material, and the holding member is configured to rotate the turntable. It is characterized by being placed on the side of the table opposite to the disk supporting surface.

Embodiments Hereinafter, a disc player as an embodiment of the present invention will be described with reference to the accompanying drawings. The disc player is a multi-disc player that can store a plurality of discs and can sequentially select any of the stored discs for continuous play.

In the figure, reference numeral 1 indicates the entire multi-disc player.

As shown in FIG. 1, the front panel 3 of the player housing 2 is provided with a rectangular opening 3a for mounting a magazine 5 as a disc holder inside the player housing.

The opening 3a extends in the left-right direction. However, the left-right direction referred to here refers to the front direction indicated by arrow Y, and the direction of arrow Y is to the left.

Further, arrow Z indicates upward. Also provided on the front panel 3 are a group of operation buttons 6 and a display section 7 for operating the multi-disc player.

As shown in Figure 2 (J or C), the magazine 5
The magazine body 8 is a rectangular parallelepiped-shaped housing as a whole, and the magazine body 8 is a housing having a generally flat rectangular parallelepiped shape.
It has a total of six rectangular plate-shaped trays Δ11 and trays 812, two types each.

Tray A11 and tray B12, thus each disk 10
are arranged and housed in order at a predetermined pitch in a direction perpendicular to the disk supporting surface of the turntable, which will be described later, in this case, in the vertical direction (in the direction of arrow 2 and its opposite direction). The tray A11 and the tray 812 are rotatably provided around a rotation support shaft 8a that is provided at the right rear end of the magazine body 8 and extends in the arrangement direction (vertical direction) of each tray. 8, it can be protruded and stored along each main surface.

The configuration of the magazine 5 will be explained in more detail.

The magazine body 8 is provided with seven partition walls 8b arranged in the vertical direction (arrow Z direction and the opposite direction), and the tray A11 and the tray B12 are arranged between the partition walls. As is clear from FIG. 3(a), small circular openings 8C are concentrically formed in each partition wall 8b in the vicinity of the rotation support shaft 8a. Figure 4+a+,
+b) and Figure 5.

+b+ indicates details of tray A11 and tray B12, and as shown in both figures, each partition wall 8b
Six openings 11a and 12a are formed in each tray so as to be able to face the opening 8C formed in the tray. Here, the frontage portion 8C formed in the partition wall 8b is referred to as a first opening, whereas the openings 11a and 12a provided in the tray A11 and the tray B12 are referred to as a second opening. Five spherical movable pieces 13a are fitted into each of the openings 80, 118 and 12a and move 1q along the direction in which the partition walls 8b are arranged (direction of arrow Z and direction opposite thereto). The diameter of each spherical movable piece 13a is the same as that of each tray 11 arranged alternately.
．． It is equal to the array pitch dimension of 12. Further, each of the spherical movable pieces is biased toward each other by a pair of leaf springs 13b arranged at the upper and lower ends of the magazine body 8.

As shown in FIG. 2+b+, a press lever 14 is provided at the front left end of the magazine body 8 and extends approximately in the front-rear direction (direction of arrow Y and the opposite direction). In this case, the magazine main body 8 is swingably attached to the magazine body 8 via the bin 14a at the front pane section. urge,
The bottle 14a is oriented in the vertical direction (arrow Z direction and the opposite direction)
It is growing in The other end of the pressing lever 14, ie, the rear prong, can smoothly engage the free end of each tray 11 and 12. A spring member 14b is engaged with the pressing lever 14. This spring member 14b moves the pressing lever 14 to the second position.
It is biased in the counterclockwise direction in Figure <b+, thereby applying a tray pressing force to the pressing lever. The pressing lever 14 is formed with a protrusion 111c that can come into contact with the edge 3b of the opening 3a of the player housing 2 when the magazine 5 is removed from the magazine He section in the player housing 2. This protrusion 14c is located at the edge 3 of the frontage 3a.
By coming into contact with b, the main body of the suppression lever 14 is rocked so as to urge each tray 11 and 12 toward the storage position within the magazine main body 8.

With the above-mentioned suppression lever 14 and spring member 14b,
A suppressing means is configured to press each tray 11 and 12 toward the storage position within the magazine body 8 and the rotation support shaft 8a. Moreover, the pressing means, the frontage part 8C (first frontage part) formed in each partition wall of the magazine main body 8, and the frontage part 11a, 12a (first frontage part) formed in each tray 11 and 12, respectively.
second opening), each spherical movable piece 13a, and a leaf spring 13b.
A holding gate structure for holding each tray 11 and 12 at a storage position within the magazine main body 8 is configured.

As is clear from Fig. 4 +a+, (b+ and Fig. 5 +a+, +b+), tray A11 and tray B12 have almost the same shape, and when the listener pulls out each tray from the magazine main body 8, the listener touches the fingertip. The only difference is the shape and position of the hooking claws 11b and 12b.Each tray 11 and 12
The free end portions include notches 11G and 12G with which the above-mentioned suppression lever 14 engages, and a pair of jig insertion holes 11d and 11e.
, 12d, and 12e are formed.

In addition, flexible members 1'H and 12f made of synthetic leather or the like are provided at predetermined positions on the main surfaces of adjacent trays that can face the disk supporting surfaces of each tray 11 and 12 so as to protrude from the main surfaces.
is provided. Also.

Each of the trays 11 and 12 is provided with arcuate recesses 11h, Ili, 12h, and 12i along the movement trajectory of the flexible members 11[,'12f provided in the adjacent trays. These recesses 11h, 11i, 12h and 121 are provided (by opening them, a total of 6
The dimensions of the trays 11 and 12 in the stacking direction are kept small. That is, the magazine 5 as a whole is made thinner.

As shown in FIG. 2(C), an engaging pawl 5a is provided approximately in the center of the right side of the magazine 5, and
b is attached to the magazine body 8 at one end so as to be swingable within a predetermined range. Further, another engaging claw 5C is provided at the end #J of the right side of the magazine 5 so as to be swingable within a predetermined range via a pin 5d. This engaging claw 5C has its free end urged outward by a coil spring 5e. Each of these engaging claws 5a and 5c
has an opening 3a (Figs. 1 and 2) at its free end.
(see Figure +b+).

The above-mentioned engaging claws 5a and 5C and the coil spring 5e constitute a mounting prevention means that prevents the magazine 5 from being mounted when the mounting position of the magazine 5 with respect to the mounting portion in the player housing 2 is incorrect. That is, when trying to attach the magazine 5 to the i-tube section with the magazine 5 upside down, the engaging claw 5a is moved by the own vehicle into lff1 eh.
The free end of the engaging claw engages with the edge 3b of the opening 3a (described above), thereby preventing the magazine 5 from being installed. Furthermore, when the magazine 5 is to be inserted into the mounting portion with the front and back reversed, the engaging pawl 5C projected outward by the coil spring 5C engages with the edge 3b of the frontage portion 3a. Therefore, mounting of the magazine 5 is prevented.

In addition, the above-mentioned engaging claws 5a, 5c and coil spring 5e
By constructing the mounting prevention means using extremely simple members such as the above, the construction is simple and costs can be easily reduced.

As shown in FIG. 2+b+ and FIG. 3+b+, the protrusion 1 of the pressing lever 14 is swingably provided on the magazine 5.
40 has a circular opening 14e formed therein. on the other hand,
As shown in FIG. 3+b+, the magazine body 8, which is the housing of the magazine 5, is provided with a projecting portion 8d extending along the lower surface of the pressing lever 14, and a columnar projection 8o is provided on the projecting portion. It is formed. A circular recess 8r is formed at the upper end of the protrusion 8d, and a spherical movable piece 8g is placed in the recess in the vertical direction (arrow Z direction and the opposite direction).
It is movably inserted in the The opening 14e formed in the protrusion 14c of the pressing lever 14 can face the four parts 8r when the pressing lever is in the position shown by the solid line in FIG. This opening 14e 1. : Can be intruded.

The above-mentioned suppression lever 14 and movable piece 8g constitute a protrusion regulating means for regulating the protrusion of each tray 11 and 12 from the magazine body 8 when the magazine 5 serving as a disk holder is in an upside-down position. . That is, when the magazine 5 is in an upside-down state, the spherical movable piece 8g moves due to its own weight and a part of the movable piece fits into the opening 14e of the press lever.
4 is restricted, thereby restricting the protrusion of each tray 11, 12 to the outside of the magazine body 8.

In addition, by configuring the protrusion regulating means with members having simple shapes such as the pressing lever 14 and the movable piece 8g, the structure is simple and costs can be easily reduced. Furthermore, regarding the 8 g of spherical movable pieces, commercially available ones can be used without specially manufacturing them.

As shown in FIG. 1, a chassis 16 serving as a support member is mounted on a bottom plate 15 fixedly provided within the housing 2. As shown in FIG. The chassis 16 has a flat part 16a extending a3 in the rear direction (arrow Y direction and the opposite direction) and the left and right direction (arrow A pair of vertical surfaces 16b and 1 extending in the direction of invasion and the vertical direction, the direction of arrow Z, and the opposite direction, that is, the direction in which the trays are arranged.
It consists of 6C.

As shown in FIGS. 6 to 9, a moving member 18 is disposed between the rear end portions of the pair of vertical surfaces 16b and 16c of the chassis 16, and a movable member 18 is provided on each of the vertical surfaces 16b and 16c. It is attached so as to be movable in the direction, that is, the arrangement direction of each tray 11, 12.

As shown in FIG. 9, a support plate 22 as a holding member is attached to the upper surface of the moving member 18, and as is clear from FIGS. 8 and 10, a turntable is mounted on the support plate. 23 is attached. As shown in FIG. 9, a carriage 24 carrying an optical pickup means is also disposed on the carrier plate 22, and a carriage 24 carrying an optical pickup means is also disposed on the carrier plate 22.
It is attached to the support plate 22 so as to be movable along a plane including 0 (shown in the figure), in this case substantially in the left-right direction (in the direction of arrow X and the opposite direction). In addition, turntable 2
3 is directly rotationally driven by a spindle motor 25 shown in FIGS. 8 to 10. In addition, the support plate 22
A carriage drive means for driving the carriage 24 is provided above.

The above turntable 23 and spindle motor 25
and a carriage 24 including an optical pickup means.
The carriage driving means and the above-mentioned carriage driving means constitute a playing means for playing a disc. That is, the playing means is supported on the moving member 18 and moves in the up and down direction (in the direction of arrow Z and in the opposite direction) together with the moving member.

As shown in FIG. 10, the turntable 23 is provided with a magnet 23b that applies a clamping force to a disc-shaped pressing member of a clamping mechanism, which will be described later. The support plate 22, which serves as a holding member for holding the spindle motor 25 and the U-turntable 23, is made of a magnetic material, and, as is clear from FIG. 10, is arranged on the side of the turntable 23 opposite to the disk supporting surface. Therefore, the turntable 23 is attracted toward the support plate 22 by the magnetic force of the magnet 23b, and as a result, the output shaft 25 of the spindle motor 25
a and a bearing portion (not shown) that supports the output shaft are brought into close contact with each other.

As shown in FIGS. 11 and 12, the chassis 16
A moving lever 33 made of a steel plate is attached to the lower surface of the magazine so as to be movable along the magazine mounting direction, that is, the front-rear direction (direction of arrow Y and the opposite direction). Details of the moving lever 33 are shown in FIG. 13 (J and City).

As is clear from FIG. 13 (J and ridges), a projecting portion 33a is provided at the rear end of the moving lever 33 and extends downward, with which the rear end of the magazine 5 can engage. There is. In other words, when the rear end of the magazine 5 engages with the projecting portion 33a, the moving lever 33 is moved rearward. Further, a coil spring (not shown) is connected to the moving lever 33 for imparting a bias force toward the front (in the direction of arrow Y) to the moving lever.

As shown in FIGS. 6 and 11, the moving lever 33
On the left side, there is a projecting portion 33 of the moving lever that moves back and forth.
A pair of detection switches 34 and 35 are arranged so that the winter operating elements 34 and 33c (see FIG. 13(a)) can engage with the winter operating elements to operate the winter operating elements.

The above-mentioned moving lever 33 and detection switches 34 and 35
Accordingly, a magazine attachment detection means for detecting that the magazine 5 is attached to the end of the magazine attachment direction inside the player housing 2 is formed in a groove.

Next, a movable member moving means for moving the above-mentioned movable member 18 in the vertical direction (arrow Z direction and the opposite direction) will be explained.

As shown in FIGS. 6 to 8, a pair of longitudinally movable plates 37 and 38 extending in the front-rear direction are provided on the outer surfaces of the left and right vertical surfaces 16b and 16C of the chassis 16. In addition, the details of the moving plates 37 and 38 are shown in FIGS. 14 and 15. As is particularly clear from FIGS. 7 and 8, each moving plate 37, 38 has guide grooves 37a, 3 extending in the direction of extension of the moving plate.
7b, 38a, 38b, 38c are formed, and each movable plate 37, 38 has a guide groove in the vertical portion 1.
It is attached to the chassis 16, which is a supporting member, by being movably fitted onto the bins 16d protruding from the outer surfaces of the members 6b and 16c. That is, moving plates 37 and 3
8 is capable of reciprocating in the front and rear directions.

As shown in FIGS. 6 to 9, the moving member 18 has a total of four bins 18a, two on the left side and two on the right side.
is installed protrudingly. As is clear from FIGS. 7 and 8, each of these bottles is movable in four guide grooves 16e formed in the left and right surfaces 16b and 16C of the chassis 16, which are supporting members, extending downward. The movable member 18 is thereby guided in the vertical direction.

The bins 18a protruding from both left and right sides of the moving member 18 protrude to the outside of the chassis 16 through the guide grooves 16e, and step-shaped cam holes 37d are formed on the inner surfaces of the moving plates 37 and 38.

38d is movably engaged with this bin 18a. The cam hole 37d formed in the moving plate 37 is formed as a whole so as to be inclined forward (in the direction of arrow Y) and downward (in the direction of arrow Z). Also, moving plate 3
The cam hole 38d formed at 8 is formed so as to be inclined upwardly toward the front as a whole. That is, when the moving plates 37 and 38 move relative to each other, the moving member 1
The cam holes 37d and 3Bd are formed so that the cam 8 can move up and down.

As shown in FIGS. 6, 7, and 14, a rack portion 37h is formed at the front end of the left movable plate 37 along the direction in which the movable plate extends. As is clear from FIGS. 6 and 7, a small gear portion 40a of a double gear 40 provided on the chassis 16 meshes with the rack portion 37h. The moving plate 37 is connected to the motor 4 via a gear reduction lateral 41 including this double gear 40.
5.

As shown in FIG. 6, a rotary lever 47 is disposed between the left and right shift plates 37 and 38, and the virtual It is attached to the chassis 16 so as to rotate about a center 47a. Both ends of the rotary lever 47 are pivotally connected to left and right movable plays 37 and 38.

The above-mentioned motor 45, gear reduction mechanism 41, rotation lever 47, and peripheral small members related thereto constitute a driving force applying means for applying driving force to the moving plates 37 and 38. The driving force applying means and the moving plates 37, 38 constitute a moving member moving means for moving the moving member 18 in the vertical direction (in the direction of arrow Z and the opposite direction).

As shown in FIG. 6, four detection switches are provided at the upper part of the left side vertical surface portion 16b of the chassis 16. This detection switch 49 is for detecting that the movable plate 37 reciprocating in the surface direction is at the most backward movement position (forward movement limit position), and a part of the movable plate 37 is connected to its actuator. It works by engaging. The moving plate 37 is provided on the right side of the front end thereof.

An address plate 50 is provided that has six slits 50a aligned along the moving direction. Further, behind the detection switch 49, a photosensor 51 for detecting the slit 50 of the address plate is provided in correspondence with the slit 50 of the address plate. Note that the four detection switches are referred to as the first sensor, and on the other hand, the photo sensor 51
is called a second sensor. The slit detection signal obtained from the second sensor is sent to a counter (not shown) that counts the slit detection signal. In addition, a control section (not shown) forming the intransitive all of the multi-disc player is arranged at a predetermined position in the player housing 2, and the a, II If section controls the stoppage of the moving plate 37 according to the count value of the counter. Know your location.

The four detection switches that are the first sensors described above, the address plate 50, and the photosensor 51 that is the second sensor,
The counter and the control section constitute a positioning mechanism that moves the moving plate 37 to a desired address position and positions it at that position. The positioning mechanism is
If a movement command is received while the photosensor 51, which is the second sensor, is emitting a slit detection signal, the moving plate 37 is moved by a distance corresponding to the difference between the current address and the desired address, and the photosensor 51 emits the slit detection signal. If a movement command is received when no movement command is issued, the movement plate 37 is moved (backward movement) until a detection signal is obtained from the four detection switches serving as the 1t7 sensors, and then moved to the desired address position.

As shown in FIG. 9, the right front end of the movable member 18 engages with each tray 11.12 (see FIG. 2+b+, etc.) in the magazine 5 to move each tray into the magazine body. 8
A tray protrusion 4453 is provided to protrude to the outside of the tray. The tray protrusion member 53 is formed in an abbreviated shape as a whole, and the bin 53 protruded into the tray protrusion member is inserted into the arcuate guide groove 18 (l) formed on one side of the moving member.
a is slidably engaged and guided. That is, the tray protrusion member 53 rotates about the center of curvature of the arcuate guide groove 186 as a rotation axis, and pushes the trays 11 and 12 with its rotating end 53b to make them protrude from the magazine body 8. As is clear from FIG. 9, the virtual axis of rotation of the tray protruding member 53 (the center of curvature of the arcuate guide groove 18d) is aligned with the rotation support axis 8a of each tray 11.12. Moreover, each tray 11 and 12 has a 12k (see FIG. 4 (al)) near the rotation support shaft 8a.

5 (see J) is pushed by the tray protruding member 53 to protrude outside the magazine body 8.

Note that since the tray protrusion member 53 is provided on the moving member 18, the above-mentioned moving member moving means (consisting of the moving plates 37, 38, etc.) and the address plate 50
A tray protruding member moving means for moving the tray protruding portion +A53 together with the eight moving members 18 to a position where it engages with the tray (11 or 12) carrying the disc 10 to be played is constituted by the positioning mechanism including the above. .

Next, each of the trays 11 and 12 described above is inserted into the magazine body 8.
The tray protruding member driving means for rotationally driving the tray protruding member 53 to protrude from the tray will be explained.

As shown in FIG. 11 and FIG.
A movable body 56 that extends in the front-rear direction is disposed on the lower right side surface of the movable body 56, and is attached to the chassis 16 so as to be movable in the direction of extension. Details of the moving body 56 are shown in FIG. 17 (G to C). Mobile object 5
A rack portion 56a is formed at the right front end of the movable body 6 along the extending direction of the movable body. This rack portion 56a has a small gear portion 5 of a double gear 57 provided on the chassis 16.
7a is engaged. The moving body 56 is connected to this double gear 5
It is driven by a motor 62 via a separate gear reduction tank 58 including a gear reducer 7. The gear reduction section 58 and the motor 62 constitute a driving force applying means that applies a driving force to the moving body 56.

As shown in FIGS. 12 and 18, near the deepest part of the magazine mounting part in the player housing 2, there is a hole for allowing the magazine 5 mounted in the magazine mounting part to protrude outside the magazine mounting part. A swinging lever 63 is arranged to extend substantially in the left-right direction, and is swingably attached to the sub-shireshiro 4 provided at the lower part of the chassis 16 via a pin 63a at a substantially central portion thereof. ing. However, the bottle 63a extends in the vertical direction (the direction of the arrow 2 and the opposite direction). As is clear from the figure, the right end of the swinging lever 63 is provided with an upwardly extending projecting portion 63b.
abuts against the rear end of the Further, a gear portion 63c having the bin 63a as the center of curvature is formed at the left end portion of the swing lever 63, and a gear portion 63c having a rotational gear 65a of the damper 65 is formed.
(shown in Figure 12) is meshed with this gear portion 63C. The damper 65 applies υ1 power using the viscous resistance of a viscous agent such as grease held inside the damper 65. In addition, 1′
! The J-movement lever 63 is given magazine protrusion force by a coil spring 53d.

The above-mentioned swing lever 63, damper 65, and coil spring 63d constitute a protrusion means for causing the magazine 5 to protrude from the magazine mounting portion in the player housing 2 to the outside.

Although not shown, in the vicinity of the movable body 56, one rotating end of the movable body 56 is attached to the locking recess 5 (+ (Fig. 2(b)) of the magazine 5.
), (C)) A locking member 67 is rotatably provided which locks the magazine in the mounting position with respect to the brake A7 housing 2 by engaging with it. Also,
The locked state of the magazine 5 by the locking member is released by the forward movement of the movable body 56.

As shown in FIGS. 11 and 16, the chassis 16
A first lever member 71 and a second lever member 72, both of which extend in the front-rear direction (direction of arrow Y and the opposite direction), are arranged at the right end of the chassis 16, and the chassis 16 is reciprocated in each direction of extension. It is attached so that it can move freely. 1st
Details of the first lever member 71 and the second lever member 72 are shown in FIGS. 9 and 20. The first lever member 71 is for driving a support which is a component of the clamp mechanism which will be described later, and the second lever member 72 is for driving the intermediate lever 73.
(shown in FIGS. 11 and 16) through the tray protruding member 5.
3 (see FIG. 9). The intermediate lever 73 is rotatably provided on the chassis 16 via a pin 73a extending in the vertical direction, and a cam t473b (shown in the 11th figure) formed at one rotating end of the intermediate lever 73
The pin 72a protruding from the second lever member 72 engages with the second lever member 72 to rotate. A rod 73C extending downward is provided at the other rotating end of the intermediate lever 73, and this rod 73c fits into a hole 53d formed in the tray protruding member 53 (9th figure), thereby causing the tray protruding member 53
is rotated.

Both the above-mentioned first lever member 71 and the second lever part member 73 are moved fl+ by the above-mentioned moving body 56.

As shown in FIG. 11, FIG. 16, and FIG.
C is formed. On the other hand, Fig. 11 and 1
As shown in FIG. 6, the first lever member 71 has this first
A first opening portion 71G that can face the recess 56c is formed, and a hinge piece 74 that can engage with the first recess 56G is provided within the first opening. These first recesses 56C
1 A lock/release means for appropriately locking the first lever member 71 with respect to the moving body 56 according to the movement of the moving body 56 using the first opening portion 71c, the movable piece 74, etc., and releasing the locked state. is configured. Tsunawara, mobile object 56
The first lever member 71 moves or stops together with the movable body depending on the moving distance of the movable body, thereby driving the clamp rock structure described later. In addition, the above lock
The release means is detailed in Japanese Patent Application No. 59-29309.

On the other hand, as shown in FIGS. 11, 16, and 17 (J and (C)), other second and third recesses 56d and 56c are formed in the movable body 56. A second opening portion 72d and a third opening portion 72e are formed in the second lever member 72 so as to be able to face the second and third portions. The second and third recesses 56d and 56e, and the second
Two movable pieces 75 and 76 are interposed between the third frontage portions 72d and 72e. These second and third
Recesses 56d, 560, second and third openings 72d,
72e, movable chests 75, 76, etc., constitute a locking/releasing means for appropriately locking the second lever member 72 with respect to the moving body 56 as the moving body 56 moves, and releasing the locked state. ing. That is, the second lever member 72 moves or stops together with the moving body 56 depending on the moving distance of the moving body 56, and thereby the tray protruding member 53 (
(see FIG. 9) is driven. The locking/unlocking means is detailed in Japanese Patent Application No. 60-072908.

The locking/releasing means described above, the second lever member 72,
The trays 11 and 12 (see FIGS. 4 and 5) are projected from the magazine body 8 by the movable body 56 and a driving force applying means that includes a motor 62 and the like and applies a driving force to the movable body 56. A tray protruding member driving means is configured to rotationally drive the tray protruding member 53 (illustrated in the ninth figure). Also,
The tray protruding member driving means and the chassis 1 which is a supporting member
6, a moving member 18, a tray projecting member 53, a tray projecting member moving means consisting of a moving plate 37, 38, etc., to cause the tray 11 or 12 carrying the disc 10 to be played to project from the magazine body 8. A protruding means is configured.

As shown in FIG. 9, FIG. 21 to FIG. 23, there are parts on the moving member 18 that move in the front-rear direction (in the direction of arrow Y and the opposite direction) and in the left-right direction (in the direction of arrow X and the opposite direction). A pair of plate-shaped supports 78 and 79 are provided, and the disk support surface 23a (shown in FIG. 10) of the turntable 23 (see FIGS. 8 and 10) is provided with a pair of plate-shaped supports 78 and 79. It is attached to the moving member 18 so as to swing in a plane substantially perpendicular to the moving member 18 .

Details of each support 78, 79 are shown in FIGS. 24 and 25. At the free ends of both supports 78 and 79, there is rotatably a disc-shaped suppressing member 80 that comes into contact with the surface of the disc 10 opposite to the turntable 23 and cooperates with the turntable to perform a disc clamping action. installed. Specifically, the free end of the support 78 comes into contact with the opposite-disk immediate pressure surface of the flange 81a formed on the main body 81 of the pressing member 80, and the free end of the support 79 contacts the disc of the flange 81a. The support members 78 and 79 are in contact with the pressing surface side, and the suppressing member 80 is vertically held between the free ends of both supports 78 and 79.

As is clear from FIGS. 9 and 21, both supports 78
．． A clamper cam 82 having an arcuate shape is disposed above the clamper cam 79, and is attached to the moving member 18 (see FIG. 9) so as to move around the center of curvature of the clamper cam 82 via the pin 82a. . Details of the clamper cam 82 are shown in FIG. 26 (ω or C1) and FIG. 27.

As is particularly clear from FIGS. 26(C) and 27,
Approximately in the center of the clamper cam 82 are respective supports 78 and 7.
Cam portions 82d and 82e are formed to engage with cylindrical projections 78d and 79d (shown in FIG. 21) protruding from the upper surface of 9, respectively. That is, as the clamper cam 82 reciprocates, each of the supports 78 and 79 is driven, and the suppressing member 80 is attached to and detached from the turntable 23. The cam portions 82d and 82e apply pressure to the correspondence by the supports 78, 79 so that the supports 78, 79 are released from the suppressing member after the pressing member 80 is attracted to the turntable 23. After the clamping of the member 8o is completed, the suppressing member is formed to have an output of 111 pA from the turntable 23.

As shown in FIGS. 21, 26(a) and (C), one end of the clamper cam 82 has a U-shaped notch 82 [
is formed, and the first lever member 71 (FIG. 11, first
A protrusion 71e formed to extend downward as shown in FIGS. 6 and 19 (a and +b) is smoothly engaged. In other words, by reciprocating this first lever member 71,
The clamper cam 82 is moved so that the supports 78 and 7
9 swings up and down.

The aforementioned clamper cam 82, the first lever member 71, the movable body 56 (shown in FIG. 17 etc.), and the first lever member 7
1 and the movable body 56 as appropriate according to the movement of the movable body 56, and a locking/unlocking means (comprised of a movable piece 74, etc.), and a drive including a motor 62 etc., which applies a driving force to the movable body 56. The saw applying means constitutes a driving means for driving each of the supports 78 and seven.

Further, the driving means and the supports 78 and 79 constitute a suppressing member moving means for attaching and detaching the pressing member 80 to and from the turntable 23. Further, the suppressing member moving means and the suppressing member 8o constitute a clamping mechanism that clamps the disk 10. Note that, as shown in FIGS. 22 and 23, the suppressing member 80 is attached to the disk supporting surface 23a of the turntable 23 (see FIG. 10).
Spring members 78f and 7() are provided to urge each of the supports 78 and 79 in a direction closer to .

FIG. 10 shows the view taken along the line X-X in FIG. A tapered portion 78g is formed which engages and positions the pressing member relative to the turntable 23, in this case positioning within a plane parallel to the disk supporting surface 23a of the turntable 23. Thereby, the pressing member 80 is centered with respect to the turntable 23 with high precision.

Here, the shapes of the turntable 23 and the suppressing section 4480 will be described in detail.

As is particularly clear from FIG. 23, the pressing member 80 includes:
A disk alignment protrusion 84 is provided which fits into the center hole of the disk 10 to align the disk. On the other hand, the turntable 23 is provided with a recess 23ch' into which the disk alignment protrusion fits when the disk is clamped. This configuration prevents the disc 10 from shifting in a direction parallel to the disc supporting surface 23a of the turntable 23.

Figure 28 shows the ■X■-I[X■ arrow view in Figure 10, and Figure 29 shows the HXI in Figure 28.
The X-riXIX cross section is shown, and as is clear from the figures, the disk alignment protrusion 84, which is a component of the pressing member 80, moves within a predetermined range along the rotation center axis of the pressing member. It is free. Specifically, the disk alignment protrusion 84 has three cam surfaces 84a formed on the disk alignment protrusion, and a pressing member 80 that is in active contact with the cam surfaces.
It is attached to the main body 81 via a cam means consisting of three spherical guide members 85 provided on the main body 81,
When the disk alignment protrusion moves along the rotational center axis of the suppressing member, it rotates about the rotational center axis. Further, as shown in FIG. 28, a spring member is used as a biasing means for rotationally biasing the disk alignment protrusion 84 so that the disk alignment protrusion 84 projects upward (in the direction of arrow Z) from the main body 81. 84d is provided.

Note that the three spherical guide members 85 described above are the pressing member 80.
are arranged at equal intervals along the rotational direction of the main body 81, and as shown in FIG. 10 and FIG.
It comes into contact with the surface of the disk 10. Therefore, the disk 10 is supported at three points by the suppressing member 80, and the disk can be clamped with high precision.

The above-mentioned clamp mechanism holds the disc 10 supported on the tray 11 or 12 which is projected outside the magazine body 8 by the tray projecting means described above onto the turntable 2.
It acts as a disk moving means for moving the disk in a direction perpendicular to the disk supporting surface 23a of No. 3 (see FIG. 10), in this case upward (in the direction of arrow Z). Further, the magazine 5 is moved by the disk moving means and the tray protruding means.
A disk ejecting and conveying gate mechanism is configured to sequentially select any disk 1o in the table and convey it onto the disk supporting surface 23a of the turntable 23.

As shown in FIG. 9, a disk holding member driving cam 87 formed in a substantially arcuate shape is provided on the moving member 18, and a disk pressing member driving cam 87 is provided on the moving member 18, and the disk holding member driving cam 87 is provided with a drive cam 87 that is centered on the center of the entire curvature of the moving member 18 via a pin 87a. It is attached to the moving member 18 so that it can be moved as shown in FIG. The details of this disk pressing member drive cam 87 are shown in FIGS. 30(a) to 30(c). Figure 9,
As shown in FIGS. 30(a) and 30(C), an opening 87c is formed at one end of the disk pressing member drive cam 87, and an opening 87c is formed at the end of the aforementioned clamper cam 82 to protrude upward. The opened bottle 82h (see FIGS. 26(a) and 26(b)) fits smoothly into the opening. That is, as the clamper cam 82 moves, the disk pressing member drive cam 87 moves. This disc holding member driving cam 87 is moved to the turntable 2 by the aforementioned disc moving means (clamp mechanism).
The free end 88a of the disk is brought into contact with the surface of the disk that is moved in the direction perpendicular to the disk supporting surface 23a (see FIG. 10) of No. 3 (see FIG. A disk holding member 88 (FIGS. 9 and 30) maintains the parallelism of the disk 10 against the disk supporting surface.
(d), (e)t, (as shown). In other words, when the disc pressing member driving cam 87 moves along its curvature, the disc pressing member 88 moves toward the support bin 8.
It is designed to swing up and down with 8b as the center.

As shown in FIGS. 6 and 11, two other detection switches 89 and 90 are attached to the chassis 16 along with the detection switches 34 and 35. 8 double detection switches.

9o is for engaging with the movable body 56 driven by the motor 62 and detecting the moving position of the movable body.

In addition, each detection switch 34, 35, 49, 89 mentioned above
．． The detection signals emitted from the and 90 and photosensor 51 are transmitted to the above-mentioned section 1111 (not shown), and the motors 45, 62 and turntable 23 are controlled by operation signals sent from the control section in response to these detection signals. It operates at a predetermined timing, which will be described later.

Next, the operation of the multi-disc player configured as described above will be briefly explained along with the playing procedure.

First, when the disc to be played is designated by operating the operation button group 6 shown in FIG. When the JJ voltage is supplied, the movable plates 37 and 38 start moving toward the front (in the direction of arrow Y) or backward (in the direction opposite to arrow Y), respectively. Therefore, the stepped cam grooves 37d formed in the moving plates 37, 38
, 38d and the guide groove 168 formed in the chassis 16, the bottle 18a is movably fitted into the six grooves.
is moved upward F, and the moving member 18 on which the bottle 18a is protruded moves up and down. Accordingly, the tray protruding member 53 (shown in FIG. 9) provided on the moving member 18 moves into a position of engagement with the tray 11 or 12 carrying the disc to be played.

In this way, when the tray protruding member 53 is positioned at the engagement position with the tray carrying the disc to be played,
Next, the motor 62 (see FIG. 11, etc.) starts rotating, and the movable body 56 is driven backward (in the opposite direction of arrow Y).

At this time, the movable body 56 is in a locked state with the second lever member 72 by a locking/releasing means comprising a movable side 75, 76 (see FIG. 16, etc.).

Note that the first lever member 71 is not yet locked with the movable body 56. Therefore, only the second lever member 72 is connected to the movable body 5.
6, and thereby the tray protruding member 5
3 rotates counterclockwise in FIG. Therefore, as shown in FIG. 2(b), a tray (for example, tray B12) carrying a performance zabegi disk protrudes from the magazine body 8, and the disk is transferred to the disk supporting surface 23a of the turntable 23 (see FIG. 10). ),
In other words, it moves to just below the disk holding surface.

After that, the movable body 56 moves further backward (in the direction opposite to the arrow Y direction), but the second lever member 72 is released from the locked state with the movable body, and at the same time, the first lever member 71 locked against. Therefore, the first lever member 71 moves rearward together with the movable body 56, and as a result, the supports 78, 79 of the clamp mechanism (shown in FIG. 21, etc.) move upward (in the direction of arrow Z).
direction). The disc is thus lifted upwards and clamped against the turntable 23.

In this way, it becomes possible to play, and the turntable 23 and carriage 24 (see FIG. 9) operate to start playing.

When the performance is finished, the disc is stored in the magazine main body 8, but since the disc storage operation 03 is performed by following the reverse process of the disc loading operation described above, a detailed explanation will not be given. Thereafter, the above operation is repeated according to the specified number of songs.

Effects of the Invention As detailed above, in the disc player according to the present invention, the magnet <2 that generates the disc clamping force
3b) is provided on the turntable (23), and a holding member (carrying plate 22) that supports the turntable and holds the spindle motor (25) that rotationally drives the turntable is made of a magnetic material. is placed on the side opposite to the disk carrying surface.

With this configuration, the output shaft of the spindle motor and the bearing section are brought into close contact with each other, and the turntable rotates without shaking, but no special member is provided for the close contact, and the cost is reduced. There is.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the entire multi-disc player according to the present invention, FIG. 2 (ω to FIG. 5 +b+ is a diagram for explaining the magazine, and FIG. 6 is a plan view of the internal structure of the multi-disc player) 7 and 8 are a Vl-Vl arrow view and a ■-■ arrow view, respectively, with respect to FIG. Fig. 12 is a plan view and a front view of the internal structure, Fig. 13 (Fig. 15 is a partial detailed view of the internal structure,
Fig. 16 is a cross-sectional view taken along the line XVl-XVl in relation to Fig. 11, and Fig. 17 (from Fig. 30 to Fig. 30) is a partially detailed view of the internal structure. Explanation of symbols of main parts 2...・Player housing 5...Magazine 8...Magazine body 10...Disk 11.12...Tray 16...Chassis 18... ...Moving member 22...Carrying plate 23...Turntable 23a...Disk supporting surface 23b...Magnet 25...Spindle motor 45.62...Motor 53...Tray protruding member 56...Moving body 71...First lever member 72...Second lever Parts 78, 79...Support 80...Press portion 84...Disc alignment protrusion 84d...Spring member (Figure 3) Q), I2) Bird 4 Figure City 1L Bō512I (cL) (b) Leaf/σ
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Claims (1)

[Claims] a turntable-carrying spindle motor; a holding member for holding the spindle motor; and a clamping mechanism for clamping a disk placed on the turntable, the clamping mechanism cooperating with the turntable and supporting the turntable. A disc player comprising a pressing member that performs a clamping action by the magnetic force of a magnet provided on the turntable, and a pressing member moving means for attaching and detaching the pressing member to and from the turntable, wherein the holding member is magnetic. 1. A disc player, characterized in that the disc player is made of material and is disposed on the side of the turntable opposite to the disc supporting surface.