JPS60214474A - Disc player - Google Patents

Abstract

PURPOSE:To reduce the cost by connecting directly an idler to an output shaft of a spindle motor so as not to increase the processing accuracy of a turntable so much. CONSTITUTION:The idler 47b contacts an output shaft 46a supported freely turnably by a holding mechanism 47a to an output shaft 46a of the spindle motor 46. The holding mechanism 47a and the idler 47b constituting a close contact means comprising the output shaft 46a and a bearing 46b supporting it. The gap produced between the output shaft 46a and the bearing 46b is corrected and the output shaft 46a, that is, the rotation of the turntable 45 is made acurate and smooth. The turntable 45 and the idler 47b are overlapped and the space of the idler in a form where the idler contacts the outer circumference of the turntable is decreased so as to miniaturize the entire player.

Description

[Detailed description of the invention] gallbladder The present invention relates to a disc player.

BACKGROUND ART Among disc players for playing discs such as digital audio discs, there is a type in which a turntable 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. Therefore, if the spindle motor as manufactured is used, the turntable will rotate while swinging within the above-mentioned gap range. Therefore, a disc player is provided with a means for bringing the output shaft of the spindle motor and the bearing portion into close contact with each other. As a contact means that has already been proposed, there is one in which a rotatably supported idler is brought into contact with the outer periphery of the turntable. However, in such a type, the processing accuracy of the turntable needs to be as high as the processing accuracy of the output shaft and bearing portion, which increases the cost.

1111 The present invention has been made in view of the above-mentioned points, and its object is to provide a low-cost disc player.

The autoloading disc player according to the present invention comprises:
The performance means includes a housing, and a performance means provided in the housing, and the performance means includes a turntable carrying spindle motor, and a contact means including an idler for bringing the output shaft of the spindle motor into close contact with a bearing portion supporting the output shaft. and the idler is in contact with the output shaft.

Embodiment Hereinafter, a vehicle-mounted autoloading disc player as an embodiment of the present invention will be explained with reference to the accompanying drawings.

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

As shown in FIG. 1, a front panel 3 constituting a part of the housing 2 is provided with a slot 3a extending in the left-right direction for inserting and covering a disc 5 to be played. However, the left and right direction referred to herein refers to the front direction indicated by arrow Y. Therefore, the direction of the arrow X in the figure indicates the left side, and the direction of the arrow Z indicates the upward direction. In addition,
The disk 5 uses a laser beam to record and read signals, and has an outer diameter of about 12 CI. The front panel 3 is also provided with a group of operation buttons 6 for operating the disc player, such as play start and eject.

As shown in FIGS. 2 to 6, a chassis 7 serving as a support member is provided within the housing 2. As shown in FIGS. In addition,
The chassis 7 consists of a main body 7a and a sub-chassis 7b fixed to the front end of the main body. As shown in FIGS. 1 and 12, the chassis 7 is supported by the housing 2 via four vibration isolating members 8 made of rubber or the like. However, only the two vibration isolating members 8 on the left side are shown in FIG. A tray 10 is provided on the chassis 7 so as to be movable in a direction parallel to a rotating surface of a turntable, which will be described later, in this case in a front-back direction (direction of arrow Y and the opposite direction thereof). As is particularly clear in FIG. 6, the tray 10 is composed of an L-shaped main body 10a and a side wall member 101) screwed to the right end of the main body. A bracket 12 is fixed to the left end of the chassis 7, and a pin 10C protruding from the left end of the tray 10 is inserted into a long hole 12a formed by extending back and forth in the bracket 12. It is supported by freely engaging.

On the other hand, a pair of moving members 13 are provided on both left and right sides of the chassis 7.
and 14 are arranged. The right moving member 14 is made of resin or the like, and is provided at the right end of the chassis 7 in the tray moving direction.
That is, it is attached to the right end of the tray 10, which is rotatably supported by a guide bar 15 that is fixed and extends in the front and rear directions.

Specifically, the movable member 14 is supported by a long hole 14a formed in the movable member extending in the front-rear direction and movably engaged with a bin 10e protruding from the right end of the tray 10. It is. Further, the left moving member 13 is located between the tray 10 and the bracket 12, and a long hole 13a extending in the front-rear direction is provided at the left end of the i-ray 10. It is supported by slidably engaging the pin 10c. Note that the right end of the tray 10 is connected to the guide bar 15 in the l-ray moving direction,
That is, they are slidably engaged and supported at two support points spaced apart in the front-rear direction. At the rear end of the tray 10 is an interlocking shaft 1 having arms 17a and 17b fixed to both ends.
7 is provided extending in the left-right direction, and the tray 1
It is rotatably supported at 0. Arms 17a, 17b
Bottles 17c and 17d are respectively protruded from the inner surface of the distal end of the movable member 13.14, and each of the bins slides into an elongated hole 13b and 14b formed in the rear end of each movable member 13.14 and extending in the vertical direction. They are movably engaged. At the right end of the chassis 7 is a power transmission m*i9 consisting of a plurality of rotatably supported gears.
is provided. A motor 20 is fixedly installed in front of the power transmission 11119, and as is particularly clear in FIG. 4, a worm 2 is attached to the output shaft of the motor.
0a meshes with the first stage gear 19a of the dynamic horn transmission mechanism 19.

Further, the final stage gear 19b of the power transmission 111fl119 is attached to the lower end of the left side of the moving member 14 in the moving direction of the moving member.
That is, it is engaged with the rack portion 14d formed in the front-rear direction. J3, the meshing position between the final stage gear 19b and the rack part 14d is such that the tray 10 is aligned with the guide bar 15.
It is located near the midpoint of the two support points that are slidably engaged with and supported by the support point.

The Tanabata 20 described above, the power transmission mechanism 19, and the arm 17
The interlocking shaft 17 including "a", 17b, etc. constitutes a driving force applying means for applying a driving force to the moving parts vi13 and 14.

A container 22 carrying a disk 5 is routed below the 1-ray 10 at a position where it is held between the moving parts I413.14. This container 22, 1 to ray 10, and moving member 1
3 and 14 constitute a disk holding section. In addition, a protective film 23 made of fel (-, etc.) is pasted on the disk holding surface of the container 22 in order to avoid direct contact between the disk holding surface and the disk 5. 3=1f, four bins 22a are provided extending in the left-right direction.The container 22 has four long holes 10fk formed by each of these bins 22a extending in the vertical direction in the tray 10: By being slidably engaged with the ray 10, the bin 22a of the container 22 is supported to be movable within a predetermined range in a direction perpendicular to the ray movement direction, that is, in the vertical direction. After passing through the elongated hole 10f, it is slidably engaged with cam holes 13d and 14d formed in the moving member 13.14, respectively.The cam holes 13d and 146 are inserted in the disk insertion direction, that is, from the front to the rear. a tapered part that slopes upward, that is, in a direction in which the container 22 moves away from the turntable, which will be described later; a horizontal part that extends rearward and continuous with the end of the tapered part in the disk insertion direction, that is, the rear end; and the rear end of the horizontal part. The container 22 is made up of a tapered part that extends in parallel with the tapered part.That is, the container 22 is configured to move up and down as the moving members 13 and 14 move in the front-back direction.

Next, the tray 10 is placed at a predetermined position on the turntable which will be described later, that is, the disc 5 supported by the container 22.
The container 22 is locked to the 1-lay 10 until the center of rotation of the turntable reaches a position where it substantially coincides with the rotation axis of the turntable, and when the tray 10 reaches the predetermined position, the container 22 is locked with the tray 10. The locking/releasing means for releasing the state and locking the tray 10 with respect to the housing 2 will now be explained.

As shown in FIGS. 4 and 6, a recess 7C is formed at the right end of the main body 7a of the chassis 7. On the other hand, a cam iM 14 is attached to the right moving member 14 so that when the tray 10 is at a predetermined position on the turntable, the position where it descends in the tray movement direction coincides with the position of the four parts 7G.
e is formed.

A lever 25 is swingably provided at the rear end of the tray 10, and a pin 26 that can be engaged with the recess 7C and the cam δ14e projects from the swinging end of the lever. . That is, the pin 26 is adapted to selectively engage with the recess 7c and the 7J groove 14c. Further, the movable member 14 is formed to extend forward continuously from the cam groove 140, and is slidably engaged with the bin 26, so that the movable member 14 is provided after the tray 10 reaches the predetermined position on the turntable. 1
A long hole 14'' is formed to allow movement of the 4.

These four parts 7C, the cam groove 140, the long hole 14 [and the bottle 2
6, the container 22 is locked to the tray 10 until the tray 10 reaches a predetermined position on the turntable, and when the tray 10 reaches the predetermined position, the container 22 is released from the locked state with the tray 10, and A locking/unlocking means for locking the tray 10 to the housing 2 is configured.

Further, the lock/release means, the chassis 7, and the tray 1
0, the container 22, the movable members 13 and 14, and the driving force applying means comprising the power transmission illumination side 19 and the motor 20, move the disc 5 inserted through the slot 3a of the housing 2 to the playing position, that is, the above-mentioned position. A disk transport IIN4 is configured to transport the disc onto the turntable.

Next, a description will be given of the playing means provided in the housing 2 for playing a disc.

As shown in FIG. 6, on the lower surface of the chassis 7, which is a part of the disk transport mechanism, a supporting member 28, which is formed in the shape of an abbreviated letter, is disposed, and is made of flexible rubber or the like. The vibration isolating member 29 is connected to the sill shift via four vibration isolating members 29. Two guide shafts 30a and 30b are fixed to the support member 28 and extend in parallel to the rotating surface of the turntable, in this case in the front-back direction, and serve as guide means. On the guide shirts l-30a and 30b, a slider 31 formed in a substantially U-shape is movable in the moving direction l! I! It is supported at both sides, that is, at both left and right ends.

As shown in FIGS. 9 and 10, the slider 31 has a screw 31 extending in the direction of movement of the slider, that is, in the front-rear direction.
A is provided, and a rectangular parallelepiped case 33 is rotatably held by the screw. In other words, case 3
3 rotates within the center perpendicular to the direction of slider movement lj. Note that, inside the case 33, there is an objective lens 33 that irradiates the information recording surface of the disc 5 with a laser spot light.
an optical pickup means (other than the objective lens 33a is not shown) for reading information from the disk. Further, the slider 31 and the case 33 are collectively referred to as a carriage 34.

Here, for example, as shown in FIG. 2, in one tray 1o, which is a part of the disk transport I1m, the disk transport mechanism is in the pre-disk transport position (the state shown in FIG. 2).
A circular rnE opening 10d is formed which faces the objective lens 33a when the carriage 34 is at the home position, that is, the rest position before playing. This opening 10d has an M attached to the surface of the objective lens 33a.
This is provided in order to wipe off yA and the like without removing the disk transport mechanism. Therefore, although not described in detail, it is a member that constitutes a part of the disk transport mechanism,
Needless to say, an opening similar to the opening 10d is also formed in a member interposed between the tray 1o and the objective lens 33a when the disc transport aIM and the carriage 34 are in the pre-performance position described above. Further, as shown in FIG. 1, a circular opening 2a is also formed on the upper surface of the housing 2. Similar to the above-mentioned frontage 10d, this opening 2a also includes a disk transport mechanism and a blade ridge 34.
objective lens 3 when it is in the above-mentioned rest position before playing.
3a are positioned to face each other. A lid 2b that can close the opening 2a is also screwed to the housing 2. By providing such an opening in the housing 2, the objective lens 33a can be cleaned without removing the housing. In addition,
Although not described in detail, it is also possible to adjust the light irradiation power of the optical pickup means through the frontage portions 10d and 2aW.

As shown in FIGS. 9 and 10, the end portion of the slider 31 in the moving direction has an elongated hole extending in the horizontal direction in this case in a plane perpendicular to the slider moving direction.
1b is already formed. A long hole 3111 is provided corresponding to one end of the rotation of the case 33, and a circular head 35b of a biased screw 35 whose screw portion 35a is screwed into the case 33 is fitted into the long hole. . As the name suggests, the axial center of the threaded portion 35a of the bias screw 35 is offset with respect to the axial center of the circular head 35b. That is, by rotating the biasing screw 35, the case 33 is rotated slightly around the support screw 31a.The biasing screw 35 and the circular head 35b of the biasing screw fit together. The mating elongated hole 31b constitutes an adjusting means for adjusting the rotational angular position of the case 33, that is, adjusting the so-called tangential direction of the optical pickup means (lf shown in the figure) provided in the case. ing. In addition,
After the darning adjustment is completed, fix with the screw 31c.

As shown in FIGS. 6 and 11, the support member 28 has screws 37 rotatably installed at both ends of the screw shirt 1, which are arranged parallel to the guide shirts 1-30a and 30b. . A motor 38 is arranged in front of the screw shaft 37, and a screw shirt]
-37 is configured to be rotationally driven by the motor via power transmission means including a pulley 39 and the like. 1st
1, a leaf spring 41 is fixedly fixed to the slider 31 in the form of a cantilever, and a half nut 42 which is screwed onto the screw shaft 37 is fixedly fixed to the protruding end of the leaf spring. has been done.

A drive mechanism for driving the carriage 34 is made up of the screw shaft 37, the power transmission means including the motor 38, the pulley 39, the leaf spring 41, the half nut 42, and small peripheral parts related thereto. It is configured.

A turn daple 45 is disposed on an extension of the movement locus of the carriage 34 at a position sandwiched between the carriage and the drive mechanism that drives the carriage, and is fixed to a support portion 4428. 8 in Figure 7
3, the turntable 45 is directly rotationally driven by a spindle motor 46, which is a driving source and is provided to support the turntable.

As shown in FIGS. 6 and 19, the key 1F ridge 34
A notch 33b is formed in the case 33, which is a part of the turntable 45 and the spindle motor 46, into which a portion of the turntable 45 and the spindle motor 46 facing the case 33 can be fitted. When the carriage 34 is at its home position, that is, at its rest position before playing, the turntable 45 and spindle motor 46 are fitted into the notch 33b.

As shown in FIGS. 7 and 8, an idler 47b rotatably supported by a holding mechanism 478 is brought into contact with the output shaft 46a of the spindle motor 46.

By these holding structure 47a and idler 47b,
A close contact means is configured to bring the output shaft 46a into close contact with the bearing portion 46b that supports the output shaft 46a. Normally, a gap of about 10 μm occurs between the output shaft 46a and the bearing portion 46b, but by installing the above-mentioned close contact means, this gap is manipulated and the rotation of the output shaft 46a and therefore the turntable 45 is controlled. It becomes accurate and smooth.

The above-mentioned support member 28 and guide shirt]・30a, 3
Qb, the carriage 34, the drive mechanism including the motor 38 (driving the carriage 34), and the turntable 45.
The above-mentioned close contact means consisting of the spindle motor 46, idler 47b, etc., and peripheral small members related thereto constitute a playing means for playing a disc.

Here, the method for attaching the support film 1428 to the chassis 7 will be described in detail.

The four support points σ relative to the sill shift of the support part IJ 28, that is, the positions where the two vibration isolating members are arranged are located at the midpoint between the center of gravity movement locus of the carriage 34 and the rotation axis of the turntable 45. They are placed at equal distances on the central arc. The vibration isolating portions 429 are designed to protect against external vibrations such as body vibrations of the automobile in which the in-vehicle autoloading disc plate 17 is installed. Although it is provided to protect the Ijihata means, by arranging the support points of the support member 28 as described above and providing the vibration isolation member 29 at the support points, the vibration isolation effect is significantly improved. be. The support point of the support member 28 is set as described above in consideration of the change in the center of gravity of the playing means as the carriage 34 moves. Providing support points of the support member 28 on an arc centered on the center of gravity of the playing means at the midpoint and equidistant from each other,
Even if the vibration isolating member 29 is stacked at the support point, a great vibration damping effect can be obtained.

Next, a description will be given of the clamping mechanism that clamps the disc 5 transported to the performance position, that is, the turntable 45.

As shown in FIGS. 2, 3, and 6, a plate-shaped support member 51 is provided above the container 22 at a position sandwiched between the moving members 13 and 14. There are a total of four bottles 51a, one pair each at both left and right ends of the support member 51.
are provided extending in the left and right direction. The support member 51 is configured such that each of the bins 51a is slidably engaged with four long holes 10g formed in the tray 10 extending in the vertical direction, so that the support member 51 can move the tray 10 in a direction perpendicular to the tray movement direction.
That is, it is supported so as to be movable within a predetermined range in the vertical direction. The pin 51a of the support member 51 also supports the tray 10.
The moving member 13. is inserted into the long hole 10g of the moving member 13.
It is slidably engaged with cam holes 13g and 111 formed in 14, respectively. The cam holes 13g and 14g are linearly inclined upward in the direction in which the support portion 4Δ51 moves away from the turntable 45, that is, from the front to the rear. 1'', that is, the support member 51 is configured to move up and down with respect to the turntable 45 as the movable members 13 and 14 move back and forth.

Note that the cam holes 13d formed in the moving members 13 and 14
, 130 and behind 14d and 14g, container 22
cam holes 13d and 14 (I is the first
This is called a cam hole, and the pin 51a of the support member 51 is called a cam hole.
The cam holes 13° and 14g that engage with the second cam hole are called second cam holes. The total length of the first cam holes 13d and 14d in the disk insertion direction is approximately equal to the total length of the second cam holes 13o and 1/Ig in the disk insertion direction.

The support member 51 is rotatably provided with a pressing member 52 that cooperates with the turntable 45 to perform a disk clamping action. Note that the position shown in FIG.
1 unclamped position. Further, the position of the support member 51 where the support member 51 moves downward by a predetermined amount and the suppression member 52 comes into contact with the surface of the disk placed on the turntable 45 is referred to as the clamp position. The support member 51 moves between the clamp position and the non-clamp position. Also shown in Figure 3,
The pressing member 52 has an annular magnet 52a, and the magnetic force of the magnet forms a disk clamp. Further, the suppressing member 52 and the supporting member 51 that rotatably supports the suppressing member 52 are made of a magnetic material such as a steel plate, and when the supporting member 51 is in the non-clamping position, the suppressing member 52 is moved by the magnetic force of the magnet 52a. It is designed to be sucked into. Further, as shown in FIG. 6, a buffer member 5 made of felt or the like is provided on the upper surface of the suppressing member 52.
2b is attached to prevent the upper surface of the suppressing member 52 from coming into direct contact with the housing 2 due to vibration of the supporting member 51 when the supporting member 51 is in the non-clamped position. However, the buffer member 52 is not limited to the upper surface of the pressing member 52, but may be a stepped portion on the part of the housing 2 that faces the pressing member 52 when the supporting member 51 is in the non-clamped position.

As is particularly clear in FIG. 2, a pair of right and left clamping plates 54 and 55 are arranged on the lower surface of the support member 51, sandwiching the pressing member 52, and each pair of clamping plates 54 and 55 are arranged in the left and right direction via three bottles 57Ia and 55a, respectively. The supporting member 5 is movably moved in the
It is attached to 1. A circumference tM52c formed on the outer periphery of the pressing portion vI52 is provided at each opposing portion of the clamping plates 54 and 55.
(3rd figure) is formed with circular arc parts 54b and 55b that are fitted into the circumferential groove 5 of the pressing member 52.
Two protruding claws 540 and 55G that can be engaged with the bottom surface of 2C are provided.

A pair of left and right synchronizing plates 57 and 58 are also provided on the lower surface of the supporting member 51 behind the clamping plates 54 and 55, and are rotatably attached to the supporting member 51 via bins 57a and 58a, respectively. ing. Each synchronizing plate 57, 58 has three arm parts 57C, 57d, 57e and 58c, 58.
d and 580. An elongated hole 57f is formed at the tip of the arm portion 57c, and a bottle 58 [protruding from the tip of the arm portion 58G is slidably engaged with the elongated hole 57f.

Also, elongated holes 57G and 580 are formed at the tips of the arm portions 57d and 58d that protrude approximately forward, and both of the elongated holes are connected to the bins 54e protruding from the clamping plates 54 and 55, respectively.
and 55e, respectively, in a slidable manner. 1. That is, the synchronizing plates 57 and 58 are configured to synchronize the operations of the clamping plates 54 and 55. Note that the clamping plate 54 and the synchronizing plate 57 are collectively referred to as the first positioning member 61, whereas the clamping plate 55 and the synchronizing plate 58 are referred to as the second positioning member 61.
They are collectively referred to as positioning members 62. That is, these pair of positioning members 61 and 62 are provided movably in a plane substantially perpendicular to the rotation axis of the suppressing member 52, and each engages the outer periphery of the pressing member 52 at two points (claws 540 and 550), for example. It is possible.

Further, each of the positioning members 61 and 62 has a position ( It is biased by a coil spring 64 which is a J biasing means.

The above-described positioning members 61 and 62 and the coil spring 64 constitute a positioning means for positioning the suppressing member 52 at a predetermined position on the support member 51.

Further, the positioning means, the suppressing member 52, and the supporting member 5
1 and related peripheral small members constitute a clamping mechanism that clamps the disc 5 conveyed to the performance position, that is, the turntable 45.

The positioning means including the above-mentioned positioning members 61, 62, etc. not only positions the pressing part 4452 that can be pushed onto the support member 51, but also positions the disc 5 inserted through the slot 3a of the housing 2 at a predetermined position on the container 22. It also acts as a positioning means for positioning. As is clear from FIGS. 2 and 6, each positioning member 61
and 62 are arranged on both sides of the disk insertion path, and the container 22 (tray 10 and moving member 13.1/4
The disk (2) is movable in a plane substantially parallel to the holding surface.

The clamping plate 54 is a component of each positioning member 61, 62.
．． Bin members 54f, 55f, 571+ and 581) are provided protruding from the lower surfaces of 55 and synchronizing plates 57 and 58, respectively. These bin parts +, 154r.

55f, 57t+, and 58h extend substantially perpendicularly to the disk holding portion of the container 22, and act as engaging portions that engage with the outer periphery of the disk 5. In addition, the coil spring 64 is attached to each bottle portion 054'', 55f, 57h, and 5811''.
The positioning parts 061, 62 move toward the outer circumference of the disk.
is in force.

Here, as shown in FIG. 6, each bin member 54'',
55f, 57h, and 58h are formed with tapers that decrease in diameter toward the disk supporting surface of the container 22.

However, the bottle member 57h is not shown. Disc 5 when loading or ejecting the disc.
is held between the respective bin members, and at the same time as the disk 5 is held, the disk 5 is pushed toward the disk holding portion of the container 22 by a component force generated by the taper action of the respective bin members. It is suppressed.

Next, a mechanism for releasing the disc clamping state by the above-mentioned positioning means will be explained.

As shown in FIGS. 2 and 6, a small bracket 71 formed in a [-] shape is fixed to the upper end of the right moving member 14, and a bin member 72 is attached to the small bracket. It is installed protrudingly. This bin member 72 extends in the vertical direction, and the h-ray 10 is moved to a predetermined position on the turntable 45, that is, the center of rotation of the disk 5 supported on the container 22 that moves together with the tray. When it reaches a position that substantially coincides with the rotation axis of the turntable 45, it engages with the front end of a pawl 73 screwed to the tip of the arm portion 58e of the synchronizer 58, which is a component of the positioning means. It is located.

In other words, as the moving member 14 moves after the tray 10 reaches the predetermined position, the positioning members 61 and 62 are operated, and the bin portions +A34f, 55r, and 571+ provided on the positioning members 61 and 62 are moved. .

58h and the outer periphery of the disk, that is, the disk clamping condition is released.

As is clear from FIG. 6, the container 22 is attached to the turntable 4 on the bin member 72 provided on the moving member 14
A taper is formed in which the diameter decreases in a direction approaching 5, that is, downward. The positioning means (positioning member 6
1.62, etc.) slides in contact with the bin member 72 and reciprocates together with the container 22 in a direction 113 substantially perpendicular to the tray movement direction. Since the taper is formed in the bottle member, the contact between the bottle member and the positioning means is a point contact. Therefore, the resistance due to mutual contact is extremely small, and disk loading and
-The operation becomes smoother. Further, the positioning means receives a thrust force due to a component force generated by the action of the taper of the pin portion U72.

Next, from the throwers 1 to 3a of the housing 2, the disk 5 is
Each IJI 4rlt that operates when is inserted will be explained.

As shown in FIG. 13, a flexible material such as rubber is formed in the shape of a plate inside the disc insertion slot 3a formed in the front panel 3 that constitutes the nlj side of the housing. A pair of flexible longitudinal members 76 and 77 are disposed on the main surface so that one end in the hand direction faces each other and close the slot 3a. Each flexible ↑I [Longitudinal part 4: /J 76.

77 is attached to the front panel 3 in the short direction (l!! end, i.e., the non-opposing side end) by a pair of fixing members 78 and 79 having a 1-shaped cross section. There is C.

These flexible longitudinal members 76, 77 as well as the fixed members 78.
79 constitutes a closing means for closing the slot 3a.

Each of the opposing ends of the flexible longitudinal members 76 and 77 is chamfered in an arcuate shape, so that the sliding contact between each flexible longitudinal member and the disk 5 is smooth. In addition, flexible portions 76a and 77a, which are formed thin and are particularly easy to bend, are provided in the vicinity of each opposing end of the flexible longitudinal members 76, 77, respectively.

Incidentally, the flexible longitudinal members 76 and 77 are electrically conductive and are grounded, for example, via fixing members 78 and 79, respectively. By doing this, static electricity can be removed from the disk 5 inserted through the slot 3a, and dust attached to the surface of the disk 5 due to static electricity is prevented from entering into the housing 2.

Note that when the material of the flexible longitudinal members 76, 77 is, for example, rubber, an effective method for imparting conductivity to the material is to mix carbon particles or the like.

As shown in FIGS. 2, 5, and 6, a lever 85 extending approximately in the front-rear direction is disposed on the right side of the bracket 12 fixed to the left end of the chassis 7, and a pin 85 is disposed on the right side of the bracket 12.
5a, it is rotatably attached to the bracket 12 at approximately the center in the longitudinal direction. This lever 85
is adapted to rotate in conjunction with the moving member 13. On the other hand, in front of the lever 85, a prevention part 4A86 is provided so as to be movable in the downward direction (in the direction of the arrow Z and in the opposite direction). A pin 8 is attached to the left end of the prevention member 86.
A protruding pin 6a is provided, and the pin is slidably engaged with a long hole 85b formed in the front end of the lever 85. These levers 85 and the prevention part 4A86 have Jζ,
A disk double insertion prevention means is configured to prevent double insertion of disks from the thrower 1-38. In other words,
As the prevention member 86 moves up and down with the rotation of the lever 85, the prevention member provided on the prevention member 861
crosses the slot 3a to prevent insertion of a disk from the slot 3a.

By the way, the lever 85 is designed to move in conjunction with the movement of the moving member 13, which is a component of the disk transport mechanism described above, or in this way, a part of the power for transporting the disc is used to insert the disc into the disc. By using the power to drive the prevention means, there is no need for a special drive [li] for driving the disk double insertion prevention means. Therefore, it is easier to downsize and reduce the cost of the entire player.

As shown in FIGS. 2, 6, and 14 (ω, (C)), the disk 5 inserted through the slot 3a is inserted into the container 2 at the deep part of the housing 2 and on the disk insertion path.
A guide member 91, which acts as a guide means for guiding the container 22 to a predetermined position, is arranged so as not to face the disk supporting surface of the container 22, and is fixed to the lower surface of the tray 10, for example. The guide member 91 is formed by bending a steel plate, for example, and has a tapered portion 91a formed at its front end so as to approach the disk supporting surface of the container 22 in the disk insertion direction.

As shown in FIGS. 2, 6, and 14 (al), the disk 5 inserted through the slot 3a and positioned at the predetermined position on the container 22 is inserted into the rear end of the tray 10 in the disk insertion direction. A play (W play) start switch 93 is provided so as to engage with the outer periphery of the disc when pressed slightly.However, this play start switch 93 is An intermediate member 94 (see Fig. 14+b
+ is also shown) to engage the disk outer periphery.

As shown in FIG. 2, a support shaft 96 extending vertically is fixed to the lower surface of the right end of the water body 10a of the tray 10. An arm 97 formed in a substantially dogleg shape is rotatably attached to the support shaft 96 at a substantially central portion thereof. Bins 97a, 9 are provided on the lower surface of both ends of the arm 97.
The bins 97a on the left end side are positioned on the disk 22 and can be engaged with the outer periphery of the Iζ disk 5. A switch holding member 99 that holds the detection switch 98 so as to be able to engage with the left end portion of the arm 97 is also swingably mounted on the support @96. This switch holding member 99 is provided with a bias bias in the n1 direction when the switch is pulled by J34 in FIG. 2 by a coil spring (not shown). Note that the arm 97 that engages with the switch holding member 99 via the detection switch 98 also
This coil spring (not shown) applies a repulsive force in the same direction as the switch holding member 99.

The above-mentioned support shaft 96, arm 97, detection switch 98,
The switch holding member 99 and the peripheral small members related thereto constitute a mechanical detection means for detecting that the disk 5 is positioned on the container 22. Further, when the tray 10 moves a predetermined amount backward from the position shown in FIG. 2 and reaches a predetermined position, the arm 97
A bottle 971) protruding from the right end of the chassis 7 is adapted to come into contact with a cut-and-raised portion 7' provided near the rear end of the chassis 7.

As shown in FIGS. 6 and 11, the carriage 34
A detection switch 101 is provided on the right side of the player for detecting that the carriage has returned to its home position, that is, the rest position before the performance starts. This detection switch 1
01 is fixed to a support member 28 that supports the carriage 34 etc., and a slider 3 which is a component of the carriage 34
A protrusion 31e protruding from the detection switch 1 emits a detection signal by engaging and covering the actuator 101a of the detection switch.

As shown in FIG. 4, a detection switch 1 is provided at the right end of the chassis 7 for detecting that the 1-ray 10 has reached the forward movement limit W position by engaging with a part of the tray 10.
03 is fixedly installed.

Further, as shown in FIG. 6, a movable member 14 is located at the right end of the chassis 7 and behind the detection switch 103.
A detection switch 104 is fixedly installed to detect that the movable member has reached the rearward movement limit position by engaging a portion of the disk, and therefore that the disk [1-ding and cleaning] has been completed. 1!4 This detection switch 104 is connected to the chassis 7 via the LL bracket 105.

In addition, 1) the operation button group 6, play start switch 93, detection switches 98, 101, 103 and 10 described above
Each signal emitted from the housing 2 is transmitted to a control section (not shown) disposed at a predetermined position within the housing 2. The motors 20 and 38 and the spindle motor 46 operate at timings described later by operation signals sent from the control section in response to these signals.

Next, the operation of the in-vehicle all-loading disc player having the above configuration will be briefly explained along with the playing procedure. Note that Figures 1 to 5 show the disc play 17.
First JIIJ IA' (/ff is shown) before the performance.

First, insert the disk 5 into the slot 3 as shown in FIG.
Insert it into the housing 2 from a. When the disk 5 is inserted through the slot 3a, the disk 5 is inserted into the bin portion 445 provided on the positioning member 61, 62 shown in FIG. 2, for example.
4 f and 55f, both positioning members 61.62
Move forward by pressing left or right. Left and right bin members 54
When the center of rotation of the disk 5 crosses the line connecting the axial centers of f and 55[, both the bin members 54f and 55f are biased toward the outer periphery of the disk in the h direction. is drawn into the housing 2. Further, at this point, the guide member 91 effectively guides the disk 5, and the disk 5 is positioned at a predetermined position on the combiner 22. Note that the disk 5 has four wooden pin members 54r,
Since the disk is positioned while being held between the disks 55r, 57h, and 58h, the disk once positioned will not be displaced by external vibrations such as vibrations of the vehicle body.

As shown in FIG. 15(a), <kl), at the same time as the disk 5 is positioned on the combiner 22,
The outer periphery of the disk 5 engages with the left end pin 7a of the arm 97, and the arm is rotated, for example, in the counterclockwise direction as shown in FIG. Therefore, the left end of the arm 97 engages with the detection switch 98 and prevents the detection switch from operating (state of 15th question). Then motor 2
0 starts rotating, and the moving member 14 is driven rearward via the power transmission 4f419. However, as is clear from FIGS. 4 and 6, the bottle 26 protruding from the swinging end of the lever 25 swingably provided on the tray 10 is connected to the cam formed on the moving member 14. By engaging m 14 e, the moving member 14 cannot move relative to the tray 10, and the container 22 is therefore locked relative to the tray 10. Therefore, by the rotation of the motor 20, the moving members 14, 13, 1 to 10 and the container 2
Only a backward movement of 2 is made. In addition, the above-mentioned bottle 26
slides on the right end of the chassis 7 while being engaged with the cam groove 14e.

At approximately the same time when the tray 10 and the container 22 are moved rearward by a predetermined distance and the disk 5 is housed in the housing 2, as shown in FIG. The bottle 97b comes into contact with the seven cut-and-raised portions of the chassis 7. By making the bottle 97b come into contact with the cut-and-raised portion 7 in this way, the stopped state of the arm 97 and the detection switch 98 is maintained. The motor 20 continues to rotate, and the disk 5 is further transported rearward.As a result, the arm 97 is moved to the first position by the cut and raised portion 7t.
It is rotated counterclockwise as shown in Figure 5 (C).
The stopped state of the arm 97 with the disk 5 is released. In this state, the rotation center of the disk 50 substantially coincides with the rotation axis of the turntable 45.

At the same time as the arm 97 and the disk 5 are released from their resting state, the bin 26 slips out of the cam groove 14e and slides into the four portions 7 formed on the chassis 7, as shown in FIG.
Go inside C. As a result, the tray 10 is
Therefore, the housing 2 is locked, and at the same time, the locking state of the movable member 14 with respect to the tray 10, and therefore the locking state of the container 22 with respect to the tray r10, is released.

In this way, only the moving parts '+A14 and 13 continue to move backwards (being pulled to the state shown in FIG.
Cam holes 13d and 17 were installed on March 13th and 14th, respectively.
As shown in FIG. 18, the combiner 22 moves downward while holding the disk 5. Therefore, the disc 5 is placed on the turntable 45. At this time, the disk supporting surface of the container 22 separates from the disk 5, and the disk 5 becomes rotatable together with the turntable 45.

Also, by moving only the moving members 13 and 14 backward, clamp! A bottle 51a protruding from one support member 51 is inserted into a cam hole 13 (+) formed in each moving member 13.14.
and 14 (l), the pressing member 52 approaches the disk 5 together with the supporting member 51 as shown in FIG. 18, and the disk 5 is clamped.
The movement stroke in the vertical direction of J) is approximately 6.5 mm,
Further, the movement stroke of the controller 22 in the vertical direction is about 6.degree. 5 mm. The movement stroke of the container 22 is 2 mm smaller than the movement stroke of the support member 51, but this is because the cam holes 13 (1, 14) with which the bin 22a protruding from the container 22 is slidably engaged.
This is a result of the CI having a horizontal portion in the middle of the cam hole.

When the movable member 14 reaches the rear limit position at the same time as the disk 5 is clamped, a part of the movable member engages with the detection switch 104 to operate the detection switch, as shown in FIG. Motor 20 is stopped. Performance is possible in this state. In addition, the moving member, 1
The lever 85 is rotated in conjunction with the movement of No. 3 to the pickling direction,
Therefore, the disk insertion flop 1-38 is prevented by the prevention member 86.
Double insertion of disks is prevented.

Of the operation button group 6 arranged on the front panel 3,
PLAYSTAR 1 - When the switch 6a is pressed and an operation signal for playing is issued, the turntable 45 rotates,
At the same time, the carriage 34 begins to move and the performance begins.

When the performance ends and the carriage 34 reaches the movement limit position, the carriage 34 and turntable 45 are stopped, and at the same time, the motor 20 begins to reverse operation. Therefore, the tray 10, movable members 13, 14, container 22, and suppressing member 52 are returned to their rest positions before playing by following a process completely opposite to the above-described operation during disk loading. In addition, the carriage 34 also returns to its home position.
It is closed.

The disk 5 is thus recovered.

In addition, when it is desired to play again the disc 5 which has been played once, the play start switch 93 is activated by slightly pushing the disc in the disc insertion direction, and the play is performed again.

Although the autoloading disc player is shown for use in a vehicle, it goes without saying that it can also be used indoors for home use.

Effects As detailed above, in the disc player according to the present invention, the output shaft (46a) of the turntable carrying spindle motor (46) including the idler (47b) is brought into close contact with the bearing portion (46b) supporting the output shaft. The idler (47b) is provided with a close contact means, and the idler (47b) is connected to the spindle motor (4
6) is brought into direct contact with the output shaft (46a).

In a normal disc brake 17, the idler is in contact with the outer periphery of the turntable, but in this type of system, the machining accuracy of the turntable is comparable to that of the output shaft of the spindle motor or the bearing section. It needs to be high enough to cover. Therefore, in the disc player according to the present invention, the idler is brought into direct contact with the output shaft (46a), which has been previously manufactured with hole precision, so that the machining precision of the turntable (45) can be made that high. Therefore, it is easy to reduce costs.

Furthermore, in the disc player according to the present invention, in this way, the driver (47b) contacts the output (=16a) of the spindle upper controller (46). Since there is a turntable (45) and an idler (
47b) are overlapped with each other, and the idler is in contact with the outer periphery of the turntable (83), and the space occupied by the idler etc. in a plane parallel to the turntable rotation surface is reduced. 3. Therefore, it is easy to make the entire play 17 smaller.

Furthermore, in the disc brake X7 according to the present invention, as described above, the idler (47b) is in contact with the output shaft (46a) of the spindle motor, so the rotational resistance of the idler reduces the rotation of the spindle motor. The effect on

[Brief explanation of drawings]

FIG. 1 is a schematic oblique view showing the entire in-vehicle autoloading disc play V according to the present invention, FIGS. 2 and 3,
4 and 5 are respectively a plan view, a front view, a left side view, and a right side view of the internal structure of the autoloading disc player, FIG. 6 is a perspective view of the main part of the internal structure, and FIG. 7 to FIG. 14(a). Mountain 1. (C) is a partially detailed view of the internal structure, FIG. 15 (ω
. Figures (C) to 118 are diagrams for explaining the operation of the autoloading disc player. Description of symbols of main parts 2...Housing 2a, 10d...Opening 815 2b...Lid 3...Front panel 3a...Slot 5. Old... Disc 6...
...Operation button group 6a...Play start switch 7...
・Chassis 7a... Main body 7b... Sub-chassis 7C... Recessed portion 7f... Cut-and-raised portion 8... Vibration isolating member 10... ...1 ~ Ray 1
0a... Main body 10b... Side wall members 10c, 10e, 17c, 17d, 22a. 26.51a, 54a, 54e, 55a. 55e, 57a, 58a, 58f, 85a. 86a, 97a, 97b --- Pins 10f, 10q
, 13a, 13b, 14a. 14b, 14f, 31b, 57'r, 57Q. 58g, 85b... Long hole 12.105... Bracket 13.14... Moving member 13d, 130.14d, 14 (J... Cam hole 14c... ... Rack part 14e ... Cam groove 15 ... Guide bar 17 ... Interlocking shafts 17a, 17b ... Arm 19 ... Power Transmission mechanism 19a... First stage gear 19b... Final stage gear 20... Motor 20a... Arm 22... Container 23. ...Protective film 2
5.85... Lever 28.51... Support member 29... Vibration isolating members 30a, 30b... Guide shaft 31...
...Sliders 31a, 31c...Screws 31e...Protrusions 33...Case 33
a... Objective lens 33b... Notch 34... Carriage 35... Offset screw 35a... Threaded portion 35b...・Circular head 37...Screw shaft 38...Motor 39...Pulley 41...
...Plate spring 42 ... Half nut 45 ... Turntable 46 ... Spindle motor 46a ... Output shaft 46b ... Bearing section 47a ... Holding mechanism 47b ... Idler 52 ... Pressing member 52a ... Magnet 52b ... Buffer part 52G ... Circumferential grooves 54, 55... Holding plates 54b, 55b... Arc parts 54c, 55c... Claws 54f, 55f, 571+, 58tI, 72...
...Pin members 57c, 57d, 57e, 58c, 58d. 58e... Arm portion 57.58... Synchronization plate 61... First positioning member 62... Second positioning member 64... Coil spring 71. ...Small bracket 76.77...Flexible longitudinal members 76a, 77a
...Flexible part 78, 79...Fixed part 86...Preventing member 86b...Preventing part 91...Guiding member 91a. ... Taper part 93 ... Play start switch 94 ...
...Intermediate member 96...Support shaft 97...
・Arms 98.101, 103.104...Detection switch 99...Switch holding member 101a...Actuator Applicant Pioneer Corporation Agent Patent attorney Motohiko Fujimura L75 times/a + (1) Chisel (υ 輻到I+ -" Continuation of the 1st page of the exposed la figure @ Inventor Shimoda, Koji [Ai] Inventor back 1) Kenji Tokorozawa-shi Hanazono 4-261 Hatachi Pioneer Co., Ltd. Tokorozawa factory

Claims (1)

[Claims] The performance means includes a housing, and a performance means provided in the housing, and the performance means includes a turntable carrying spindle motor, and a contact means including an idler for bringing the output shaft of the spindle motor into close contact with a bearing portion supporting the output shaft. A disc player, wherein the idler is in contact with the output shaft.