JPS6180556A - Automatic loading disc player - Google Patents

Abstract

PURPOSE:To attain ease of assembling work and very solid fixing by selecting an interval between a holder lower face and a support upper face smaller than the shaft outer diameter in fixing a guide shaft. CONSTITUTION:A guide shaft 30a is fixed by a holder 112 deformed elastically, the 1st support 111 and a pillar member 113 being the 2nd support. Then an interval A between the lower face 112a of the holder 112 and the upper face 111a of the pin 111 is set slightly smaller than the outer diameter of the guide shaft 30a. Through the constitution above, the shaft 30a is inserted to the holder 112 and a screw 114 is tightened, then the holder 112 is deformed elastically and fixed solidly. Thus, the assembling work is attained easily and solid fixing is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc player, and more particularly to an autoloading disc player equipped with a disc transport mechanism that automatically transports a disc to a playing position.

BACKGROUND ART Disc players for playing information recording discs such as digital audio discs have already been developed and have recently come to be widely used in ordinary households.

However, since such conventional disc players are designed with the premise of being installed in a quiet place indoors, they are not suitable for outdoor use. Requirements for a disc player used outdoors include ease of loading discs, overall compactness, and good vibration resistance and dust resistance.

In particular, when considering installation in a car, there is a strong demand for downsizing since the space inside the car is limited, and when downsizing, it is desirable to be able to reduce even one part. On the other hand, miniaturization may complicate the assembly work and impair assemblability, so it is important to prevent assemblability from being impaired in order to promote miniaturization.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an autoloading disc player that can contribute to miniaturization and is easy to assemble.

The autoloading disc player according to the present invention comprises:
A housing having a slot for inserting and ejecting a disc, a playing means provided in the housing, and a disc transport mechanism that transports the disc to a performance position, including a disc holding part that supports the disc at a predetermined position. An autoloading disc player, wherein the performance means includes a carriage carrying an optical pickup means, a guide means for guiding the carriage, and a drive mechanism for driving the carriage, the guide means comprising: A pair of guide shafts are provided parallel to each other so as to sandwich the carriage on both sides in the moving direction of the carriage, and a pair of holding means for holding each of the pair of guide shafts to the housing. , at least one of the pair of holding means includes an elastically deformable holding part that fits into and holds one end of the guide shaft, and a holding part that is provided near the holding part and that holds the guide shaft on the top surface thereof. a first support part that supports the shaft; a second support part that supports the other end of the guide shaft;
and a fixing means for fixing to the supporting part by screw tightening, the distance between the inner surface of the fitting top part of the holding part and the top surface of the second supporting part being slightly smaller than the diameter of the guide shaft. The present invention is characterized in that the second support portion is small and provided at a position where the second support portion can engage with an end surface of the carriage in the movement direction when the carriage reaches a movement limit position.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An automotive autoloading disc player as an embodiment of the present invention will be described below 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 forming a part of the housing 2 is provided with a slot 3a extending in the left-right direction into which a disc 5 to be played is inserted. 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. The disk 5 is of a type that records and reads signals using laser light, and has an outer diameter of about 12 cm. 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 support member, ie, 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. 1, only the two left-hand vibration isolating members 8 are shown. 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 10b screwed to the right end of the main body. A bracket 12 is fixed to the left end of the chassis 7, and a bin 10c protruding from the left end of the tray 10 slides into an elongated hole 12a formed in the bracket 12 to extend in the lyJ direction. They are supported by movably 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 slidably supported by a guide bar 15 that is fixed and extends in the front-rear direction.

Specifically, the movable member 14 is supported by a long hole 14a formed in the movable member extending in the front-rear direction and slidably engaged with a bin 10e protruding from the right end of the tray 10. There 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 formed in the moving member, and a bin is provided at the left end of the tray 10. 10c1. :tW
They are supported by freely engaging each other. The right end of the tray 10 is slidably engaged with and supported by a guide bar 15 at two support points spaced apart in the tray movement direction, that is, the front-rear direction. An interlocking shaft 17 having arms 17a and 17b fixed to both ends thereof is provided at the rear end of the tray 10 and extends in the left-right direction, and is rotatably supported by the tray 10. Arms 17a, 17
Bottles 17c and 17d are respectively protruded from the inner surface of the tip end of the movable member 13.14. 1IJllJ freely engaged. A power transmission mechanism 19 consisting of a plurality of rotatably supported gears is provided at the right end of the chassis 7. A motor 20 is fixedly installed in front of the power transmission mechanism 19, and as is particularly clear in FIG. are doing.

Further, the final stage gear 19b of the power transmission mechanism 19 is meshed with a rack portion 14d formed at the lower end of the left side surface of the moving member 14 in the moving direction of the moving member, that is, in the front-rear direction. The engagement position between the final stage gear 19b and the rack portion 14d is near the midpoint of the two support points at which the tray 10 is slidably engaged with and supported by the idler bar 15.

The above motor 20, power transmission mechanism 19, and arm 17
The interlocking shaft 17 including the movable members 13 and 17 constitutes a driving force applying means for applying a driving force to the moving members 13 and 14.

A container 22 carrying a disk 5 is arranged below the tray 10 at a position sandwiched by the moving members 13, 14. This container 22, tray 10, and moving member 13
and 14 constitute a disk holding section. It should be noted that the disk supporting surface of the container 22 is covered with a protective material such as felt to prevent direct contact between the disk supporting surface and the disk 5. 23 is attached. There are a total of four bins 22, one pair each at both left and right ends of the container 22.
a is provided extending in the left-right direction. container 22
The bins 22a are slidably engaged with four elongated holes 10f formed in the tray 10 to extend in the vertical direction, so that the tray 1o is provided with a predetermined position in the direction perpendicular to the tray movement direction, that is, in the vertical direction. It is supported so that it can move freely within the range. After passing through the elongated hole 10f, the bottle 22a of the container 22 is slidably engaged with cam holes 13d and 14d formed in the moving member 13.14, respectively. The cam holes 13d and 14d are arranged upward in the disk insertion direction, that is, from the front to the rear, that is, in the container 22.
a tapered portion that slopes in a direction away from the turntable, which will be described later; a horizontal portion that extends rearward and continuous with the end of the tapered portion in the disk insertion direction, that is, the rear end; and a horizontal portion that continues with the rear end of the horizontal portion and the tapered portion. The tapered portion extends in parallel. That is, the container 22 is configured to move up and down as the moving members 13 and 14 move back and forth.

Then, the tray 10 moves to a predetermined position on the turntable, i.e., the disc 5 carried in the container 22.
The container 22 is locked to the tray 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 locked state of the container 22 with the tray 10 is locked. A lock for releasing and locking the tray 10 to the housing 2.
The release means will 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 groove 14e is formed in the right moving member 14 so that the position in the tray movement direction coincides with the position of the four parts 7C when the tray 10 is at a predetermined position on the turntable.

A lever 25 is swingably provided at the rear end of the tray 10, and a pin 26 that can be engaged with the four portions 7C and the cam groove 14e projects from the swinging end of the lever. That is, the pin 26 is adapted to selectively engage with the recess 7C and the cam groove 14e. In addition, the moving member 14
is formed so as to extend forward continuously from the cam groove 14e, and is freely engaged with the bin 26) to prevent the movement of the moving member 14 after the tray 10 reaches the predetermined position on the turntable. A long hole 14'' is formed to allow this.

These four parts 7c, cam groove 1401 long hole 1. The container 22 is locked to the tray 10 by the IN and the bin 26 until the tray 10 reaches a predetermined position on the turntable, and when the tray 10 reaches the predetermined position, the container 22 is locked with the tray 10. A lock for releasing and locking the tray 10 to the housing 2.
A release means is configured.

Further, the lock/release means, the chassis 7, and the tray 1
0, the container 22, the movable members 13, 14, and the driving force applying means consisting of the power transmission mechanism 19, the motor 20, etc., move the disc 5 inserted through the slot 3a of the housing 2 to the playing position, that is, the turn. A disk transport mechanism is configured to transport the disc onto the table.

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

As shown in FIG. 6, a support member 28 having a substantially U-shape as a whole is disposed on the lower surface of the chassis 7, which is a part of the disk transport mechanism, and is made of flexible rubber or the like. The chassis 7 is
is attached to. Two guide shafts 30a and 30b are fixed to the support member 28, which extend in parallel to the rotating surface of the turntable, in this case in the front-back direction, and serve as guide means. A slider 31 formed in a substantially U-shape is movably supported on the guide shafts 30a and 30b at both sides in the direction of movement and 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 lfi is provided, and the rectangular parallelepiped case 33 can be rotated by the screw. held. That is, the case 33 rotates in a plane perpendicular to the slider movement direction. Incidentally, the case 33 carries an optical pickup means (other than the objective lens 33a is not shown) for reading information from the disk, including an objective lens 33a that irradiates the information recording surface of the disk 5 with a laser spot light. ing. Further, the slider 31 and the case 33 are collectively referred to as a carriage 34.

Here, for example, as shown in FIG. 2, the tray 10 forming a part of the disk transport mechanism has a carriage 34 in which the disk transport mechanism is in the pre-disk transport position (the state shown in FIG. 2). A circular opening 10d is formed which faces the objective lens 33a when the instrument is at the home position, that is, the rest position before playing. This opening 10d removes dust etc. attached to the surface of the objective lens 33a.
This is provided for wiping the disk transport mechanism without removing it. Therefore, although not described in detail, this is a member that constitutes a part of the disc transport mechanism, and is a member that is interposed between the tray 10 and the objective lens 33a when the disc transport mechanism and carriage 34 are in the pre-performance position described above. Needless to say, a frontage similar to the opening 10d is formed in the opening 10d. Further, as shown in FIG. 1, a circular opening 2a is also formed on the upper surface of the housing 2. Like the opening 10d, this opening 2a is also positioned to face the objective lens 33a when the disc transport mechanism and carriage 34 are in the above-described rest position before playing. Housing 2 also has
A lid 2b closing the opening 2a is fixed with a screw. By providing such an opening in the housing 2, the objective lens 33a can be cleaned without removing the housing. Although not described in detail, it is also possible to adjust the light irradiation power of the optical beat-up means through the openings 10d, 2a, etc.

As shown in Figure 9 and '@10,
At the end of the slider 31 in the moving direction, an elongated hole 311) is formed in a plane perpendicular to the slider moving direction, extending in the left-right direction in this case. The elongated hole 31b is provided corresponding to one end of the rotation of the case 33, and the circular head 35b of the biased screw 35 whose screw portion 35a is screwed into the case 33 is fitted into the elongated 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 35tl. In other words, this eccentric screw 35
By rotating the case 33, the support screw 31a
The rotational angle position of the case 33 can be adjusted by the biasing screw 35, which is designed to rotate slightly around the center, and the elongated hole 31b into which the circular head 35b of the biasing screw fits. In addition, an adjustment means for adjusting the so-called tangential direction of the optical pickup means (not shown) provided within the case is configured. In addition,
After this adjustment is completed, it is fixed with the screw 31c.

As shown in FIGS. 6 and 11, a screw shaft 37 is rotatably attached to both ends of the support member 28 and is arranged parallel to the guide shafts 30a and 30b. A motor 38 is disposed in front of the screw shaft 37.
7 is for the motor.

Thus, it is configured to be rotationally driven via a power transmission means including a pulley 39 and the like. As is particularly clear in FIG. 11, a leaf spring 41 is fixed to the slider 31 in the form of a cantilever, and a half nut 42 that is screwed onto the screw shaft 37 is fixed to the free end of the leaf spring. has been done.

A drive mechanism for driving the carriage 34 is constituted by the screw shaft 37, the motor 38, the power transmission means including the pulley 39, the leaf spring 41, the half nut 42, and related peripheral small members. ing.

A turntable 45 is disposed on the extension line of the movement locus of the carriage 34 and at a position sandwiched between the carriage and the drive mechanism that drives the carriage.
5 and is fixed to the support member 28. As is clear from FIG. 7, the turntable 45 is equipped with a drive mechanism that supports the turntable. It is designed to be directly rotationally driven by a spindle motor 46 which is a flI source.

As shown in FIGS. 6 and 9, the case 33, which is a part of the carriage 34, has a notch 33b into which a part facing the case 33 can be inserted behind the turntable 45 and the spindle motor 46. It is formed. 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 47a is brought into contact with the output shaft 46a of the spindle motor 46. By these holding mechanism 47a and idler 47b,
A close contact means is configured to bring the output shaft 46.8 and the bearing portion 461 supporting it into close contact. Normally, a gap of about 10 μm occurs between the output shaft 46a and the bearing portion 46b, but by providing the above-mentioned close contact means, this gap is corrected and the rotation of the output shaft 46a and therefore the rotation table 45 is improved. It will be accurate and smooth.

The above-mentioned support member 28 and guide shafts 30a, 3Q
b, the carriage 34, and the drive I including the motor 38
1. (driving the carriage 34) and a 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 member 28 to the chassis 7 will be described in detail.

The position where the vibration isolating member 29 is arranged from the four supporting points of the supporting member 28 relative to the chassis 7 is centered on the midpoint between the midpoint of the movement trajectory of the center of gravity of the carriage 34 and the rotation axis of the turntable 45. They are placed at equal distances on the arc.

The vibration isolating member 29 is provided to protect the playing means from external vibrations such as body vibrations of the automobile in which the heavy-duty auto-loading disc player is mounted, but the supporting point of the supporting member 28 is By arranging the vibration isolating member 29 at the support point in this manner, the vibration isolating effect is significantly improved. 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. Even if the support points of the support member 28 are provided on an arc centered on the center of gravity of the playing means at the midpoint and equidistant from each other, and two vibration isolators are provided at the support points, a large vibration isolation effect can be obtained. is 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 elongated holes 10 (+) formed in the tray 10 extending in the vertical direction, so that the support member 51 can be attached to the tray 10 in a direction perpendicular to the tray movement direction. That is, the bin 51a of the support member 51 is supported movably within a predetermined range in the vertical direction.
The movable member 13 is inserted into the elongated hole 10g of 0.
．． They are slidably engaged with cam holes 13G and 14g formed in 14, respectively. Cam holes 13g and 14 (
+ indicates a direction in which the support member 51 moves away from the turntable 45, that is, it is linearly inclined upward from the front to the rear. 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 horizontally.

Note that the cam holes 13d formed in the moving members 13 and 14
, 13o and 146 and 14g, container 22
The cam holes 13d and 14d that engage with the pin 22a of the support member 51 are referred to as first cam holes, whereas the cam holes 13 (+ and 149) that engage with the pin 51a of the support member 51 are referred to as second cam holes. The total length of the first cam holes 13d and 14d in the disk insertion direction and the total length of the second cam holes 13 (+ and 11+) in the disk insertion direction are approximately equal.

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 when the support member 51 moves downward by a predetermined amount and the pressing member 52 comes into contact with the surface of the disk placed on the turntable 45 is referred to as a clamp position. Support member 5
1 moves between the clamped position and the unclamped position. As also shown in FIG. 3, the pressing member 52 has a ring-shaped 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 pressing member 52 is pushed against the supporting member 51 by the magnetic force of the magnet 52a. It is designed to be absorbed by Further, as shown in FIG. 6, a buffer member 52 made of felt or the like is provided on the upper surface of the pressing member 52.
b is attached to prevent the upper surface of the pressing member 52 from coming into direct contact with the housing 2 due to vibration of the supporting member 51 when it is in the non-clamped position. However, this buffer member 52 is
2, but may be provided on a part of the housing 2 that faces the pressing member 52 when the supporting member 51 is in the non-clamping position.

As is particularly clear in FIG. 2, a pair of left-hand holding plates 54 and 55 are arranged on the lower surface of the support member 51, sandwiching the pressing member 52, and each hold three bottles 54a and 55.
Support member 51 is movable in the left and right direction via 5a.
is attached to. I! l! A circumferential groove 520 formed on the outer periphery of the pressing member 52 is provided in each opposing portion of the holding plates 54 and 55.
(3rd illustration) Arc parts 54b and 55b inserted into the inside
is formed, and the circular arc portion has two pawls 54c and 55C that can engage with the bottom surface of the circumferential groove 52C of the pressing member 52.
is installed protrudingly.

A pair of left and right synchronizing plates 57 and 58 are also disposed on the lower surface of the support member 51 in the direction of the clamping plates 54 and 55, and are rotatably attached to the support member 51 via bins 57a and 58a, respectively. It is being Each synchronizing plate 57, 58 has three arm parts 57c, 57d, 57eitt and 58c,
58d and 58e. A long hole 57r is formed at the tip of the arm portion 570, and a bottle 58'' protruding from the tip of the arm portion 58c is slidably engaged therein. Elongated holes 57111.58!I+ are also formed at the tips of the parts 57d and 58d, and these elongated holes are slidably engaged with the bottles 54e and 55e, respectively, which are protruded from the clamping plates 54.55. In other words, the synchronizing plates 57 and 58 are configured to synchronize the operations of the clamping plates 54 and 55. Note that the clamping plates 54 and the synchronizing plates 57 are connected to the first positioning member 61. , and on the other hand, the clamping plate 55 and the synchronizing plate 58
are collectively referred to as the second positioning member 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 positioning member 61, 62 is provided so as to be movable in a plane substantially perpendicular to the rotation axis of the suppressing member 52.
can be engaged with the outer periphery of the

In addition, each of the positioning members 61 and 62 is attached in a direction in which the engaging portion of the clamping plate 54, 55 that is a part of the positioning member and the outer periphery of the pressing member, that is, the claws 54c and 55c approaches the outer periphery of the pressing member. It is biased by a coil spring 64 which is a 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 pressing member 52, and the supporting member 5
1 and related peripheral small members constitute a clamping mechanism that clamps the disc 5 conveyed onto the performance position, that is, the turntable 45.

The positioning means including the above-described positioning members 61, 62, etc. not only positions the pressing member 52 on the support member 51, but also positions the disk 5 inserted from the thrower 1-3a of the housing 2 on the container 22. It also acts as a positioning means for positioning at a predetermined position. 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 are movable in a plane substantially parallel to the disk holding surface of the container 22 (which together with the tray 10 and the moving members 13 and 14 constitute the disk holding section). .

The clamping plate 54 is a component of each positioning member 61, 62.
．． 55 and each lower surface of the synchronizing plates 57 and 58 t:'
Inner w materials 54f, 55f, 57h and 58h are provided in a protruding manner, respectively. These bin members 54''.

55r, 5711, and 58h extend substantially perpendicularly to the disk supporting surface of the container 22, and act as engaging portions that engage with the outer periphery of the disk 5. Note that the coil spring 64 urges the positioning members 61, 62 in a direction in which each of the bin members 54f, 55f, 57h, and 58h approaches the outer periphery of the disk.

Here, as shown in FIG. 6, each bottle member 54f
, 55f, 57h, and 58h are formed with tapers whose diameters decrease toward the disk holding portion of the container 22.

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

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, an L-shaped small bracket 71 is fixed to the upper end of the right moving member 14, and a bin member 71 is fixed to the small bracket.
2 is provided protrudingly. This bin member 72 extends in the vertical direction, and the tray 10 is at a predetermined position on the turntable 45, that is, the rotation center of the disk 5 supported by the container 22 that moves together with the tray is the rotational center of the turntable 45. It is arranged so as to engage with the front end of a pawl 73 screwed to the tip of the arm portion 58e of the synchronizing plate 58, which is a component of the positioning means, when it reaches a position that substantially coincides with the axis.

That is, 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 members 54f, 55f, and 57h 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.) is in contact with the bin member 72 and pivots, reciprocating together with the container 22 in a direction substantially perpendicular to the tray movement direction.As mentioned above, the bin member 72 is tapered. , the contact between the bottle member and the positioning means is a point contact. Therefore, the resistance caused by mutual contact becomes extremely small, and disc loading and ejecting operations become smooth. Further, the positioning means receives thrust from a component force generated by the taper action of the bottle member 72.

Next, each mechanism that operates when the disk 5 is inserted from the slot 3a of the housing 2 will be explained.

As shown in FIG. 13, inside the disk insertion slot 3a formed in the front panel 3 constituting the front part of the housing, a flexible material such as rubber is formed into a plate shape. A pair of flexible longitudinal members 76 and 77 are provided, which are arranged such that one end thereof in the hand direction faces each other and close the thrower t-3a at a main surface. Each of the flexible longitudinal members 76 and 77 has a pair of fixing members 78 and 79 each having a 1-shaped cross section at the other end in the short direction, that is, at the non-opposing end.
It is attached to the front panel 3 by.

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 arc shape, so that the contact between the flexible longitudinal members 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 lever 85 is arranged on the right side of the bracket 12 fixed to the left end of the chassis 7.
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, a prevention member 86 is provided in front of the lever 85 so as to be movable in the vertical direction (in the direction of arrow Z and the opposite direction). A bottle 86a is attached to the left end of the prevention member 86.
is provided protrudingly, and the bottle is slidably engaged with a long hole 85b formed in the front end of the lever 85.

These lever 85 and prevention member 86 constitute a disk double insertion prevention means for preventing double insertion of disks from the slot 3a. That is, the lever 85
As the prevention member 86 moves up and down in accordance with the rotation of
It is designed to cross the slot 3a and prevent the insertion of a disc from the slot 3a.

By the way, the lever 85 is designed to be linked to the movement of the moving member 13, which is a component of the disk transport mechanism described above, and in this way, a part of the power for transporting the disk is transferred to the disk double insertion prevention means. By using this as the power for driving the disk double insertion prevention means, a special drive mechanism for driving the disk double insertion prevention means is not required. 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 to face the disk carrying 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 that slopes toward the disk supporting surface of the container 22 in the disk insertion direction at its front end.

As shown in FIGS. 2, 6, and 14(a), the disk 5 inserted through the slot 3a and positioned at the predetermined position on the container 22 is inserted into the 1908 portion of the tray 10 in the disk insertion direction. A play start switch 93 is provided so as to engage the outer periphery of the disc when pressed slightly. In the past, this play start switch 93 had an intermediate member 94 (also shown in FIG. 14+b+) which was provided in front of the play start switch so as to be movable in the front and back direction and which was provided with a forward bias. It engages with the outer periphery of the disk through.

As shown in FIG. 2, a support shaft 96 extending in the vertical direction is fixed to the lower surface of the right end of the main body 1Qa of the tray 10. As shown in FIG. An arm 97 formed in a substantially dogleg shape is rotatably attached to the support shaft 96 at substantially the center thereof. Bins 97a, 9 are provided on the lower surface of both ends of the arm 97.
7b is provided protrudingly from J3, and the bottle 97a on the left end side is
It is engageable with the outer periphery of the disk 5 positioned on the container 22. The support shaft 96 also includes a detection switch 98.
Nine switch holding members are movably attached to the left end of the arm 97 so as to be engageable with the left end of the arm 97. This switch holding member 99 is biased clockwise in FIG. 2 by a coil spring (not shown). The arm 97, which is engaged with the switch holding member 99 via the detection switch 98, also holds the switch holding member 99 due to this coil spring (not shown).
It is given a repulsive force in the same direction as the other.

The above-mentioned support shaft 96, arm 97, detection switch 98,
The nine switch holding members and their associated small peripheral members constitute 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 bin 97b protruding from the right end of the chassis 7 is configured to abut against a cut-and-raised portion 7f 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 a carriage 34 etc., and a slider 3 which is a component of the carriage 34.
A protrusion 31e protruding from the detection switch 1 engages with an actuator 101a of the detection switch to generate a detection signal.

As shown in FIG. 4, a detection switch 10 is provided at the right end of the chassis 7 to detect that the tray 10 has reached its forward movement limit position by engaging with a portion of the tray 10.
3 is fixed.

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 1 detects that the movable member has reached the rearward movement limit position by engaging with a portion of the movable member, and therefore that disc loading and clamping have been completed.
04 is fixedly installed. prompt, this detection switch 104
is attached to the chassis 7 via a bracket 105.

In addition, each signal emitted from the aforementioned operation button group 6, play start switch 93, detection switches 98, 101, 103, and 104 is transmitted to a control part (not shown) disposed at a predetermined position in the housing 2. be done. The motors 2o and 38 and the spindle motor 46 operate at timings to be described later by operation signals sent from the control section in response to these signals.

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

Note that FIGS. 1 to 5 show the initial state of the disc player before playing.

First, insert the disk 5 into the slot 3 as shown in FIG.
Insert into the housing 2 from a. At the same time as the disk 5 is inserted through the slot 3a, the pin member 54 provided on the positioning member 61, 62 shown in FIG.
f and 55f, and moves forward while pushing both positioning members 61 and 62 left and right. When the center of rotation of the disc 5 crosses the line connecting the axes of the left and right bin members 54f and 55f, both bin members 54r and 55f are biased toward the outer periphery of the disc, so even if you release your hand, the disc will not move. 5 is drawn into the housing 2. Further, at this time, the guide member 91 effectively guides the disk 5, and the disk 5 is positioned at a predetermined position on the container 22. Note that the disk 5 has four bin members 54'', 55r, 57
Since the disk is positioned while being held between the disks h and 58h, the disk once positioned will not be displaced by external imaging such as vehicle body vibration.

As shown in FIG. 15 (ω, city), at the same time as the disk 5 is positioned on the container 22, the outer periphery of the disk 5 engages with the left end pin 97a of the arm 97, and the arm For example, as shown in FIG.
15th appearance〉state rs〉. Then, the motor 20 starts rotating and the moving member 14 is driven backward via the power transmission mechanism 19. However, as is clear from FIGS. 4 and 6, the pin 26 protruding from the swinging end of the lever 25 swingably provided on the tray 10 is inserted into the cam groove formed in the moving member 14. By engaging 14e, the moving member 14 cannot move relative to the tray 10, and therefore
Container 22 is locked to tray 10.

Therefore, due to the rotation of the motor 20, the moving member 14.1
3, the tray 10, and the container 22 are only moved rearward. Note that the pin 26 slides on the right end of the chassis 7 while being engaged with the cam groove 14e.

Almost at the same time when the tray 10 and the container 22 move backward by a predetermined amount and the disk 5 is housed in the housing 2, a pin protruding from the right end of the arm 97 is released, as shown in FIG. 15(C). 97b is the cut-and-raised portion 7 of the chassis 7
In this way, the pin 97b comes into contact with the cut and raised portion 7.
By contacting r, the engagement state between arm 97 and detection switch 98 is maintained. Therefore, the motor 20 continues to rotate, and the disk 5t is transported further rearward. Along with this, the arm 97 is moved to the first position by the cut-and-raised portion 7 [
The arm 97 is rotated counterclockwise in FIG. 5(C), and the engagement state of the arm 97 with the disk 5 is released. In this state, the rotation center of the disc 5 is at the turntable 4.
It almost coincides with the rotation axis of No. 5.

At the same time as the engagement between the arm 97 and the disk 5 is released, the bottle 26 leaves the cam 14e and enters the recess 7C formed in the chassis 7, as shown in FIG. This locks the tray 10 with respect to the chassis 7 and therefore the housing 2, and at the same time locks the tray 10 with respect to the moving member 14.
locked state with respect to the tray 10, therefore, the container 2
The locked state of the second tray 10 is released.

In this way, only the movable members 14 and 13 continue to move backward until the state shown in FIG. 17 is reached. That is, the bin 22a protruding from the container 22 slides along the cam holes 13d and 1/ld provided in the moving member 13.14, respectively, and as shown in FIG. Move downward while carrying 5. Therefore, the disc 5 is placed on the turntable 45. At this time, the disk supporting surface of the container 22° is separated from the disk 5, and the disk 5 becomes rotatable together with the turntable 45.

Also, by moving only the moving member 1:114 backward, the bottle 51a protruding from the support member 51 of the clamp mechanism is
The IM moves along cam holes 13g and 14111 formed in the moving members 13 and 14, respectively, and as shown in FIG. 18, the pressing member 52 approaches the disk 5 together with the support member 51, and the disk 5 is clamped. Note that the support member 51
The movement stroke in the vertical direction is approximately 8.5III
11, and the movement stroke of the container 22 in the vertical direction is approximately 6°51. The movement stroke of the container 22 is 21 times larger than the movement stroke of the support member 51.
I11 is smaller, but this is due to the cam hole 13d in which the bottle 22a protruding from the container 22 is slidably engaged.
, 14d have 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, causing the detection switch to operate 1FI1, as shown in FIG. , the motor 20 is stopped. Performance is possible in this state. Note that the lever 85 is rotated in conjunction with the backward movement of the movable member 13, and therefore the prevention member 86 prevents the disk insertion slot 3 from being rotated.
Insertion of the second disk from a is prevented.

Behind 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 limit position of movement, the carriage 34 and turntable 45 are stopped, and at the same time, the motor 20 starts a reversing operation. Therefore, the tray 10, the moving members 13, 14, the container 22, and the pressing member 52 are returned to the rest position before playing through a process that is completely opposite to the operation at the time of disc loading described above. Further, the carriage 34 is also returned to its home position.

In this way, the disk 5 is 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.

Further, as is clear from FIGS. 9 to 11, in the autoloading disc player, one of the pair of guide shafts 30a and 30b provided for guiding the carriage 34, one 30b is connected to the screw shaft 37 side. 34, and the other guide shaft 30a abuts against and supports the carriage 34. As shown in FIG. 11, a pin 111 as an engaging member that engages with an end surface in the moving direction of the carriage when the carriage 34 reaches its movement limit position is provided, for example, near the guide shaft 30a. . This bottle 111 is integrally provided to protrude from the support member 28 shown in FIG.

FIG. 19 shows a schematic perspective view of an example of a holding mechanism for the guide shaft 30a. In the figure, the guide shaft 30a
One end is held by, for example, a holding portion 112 that is integrally formed with the support member 28 in a substantially inverted U shape and fits into the one end. The holding part 112 is formed with a thin wall at the top, so that it can be used as the support member 28! It is elastically deformable in the straight direction. Near this holding part 112,
The bin 111 is located there. This bottle 111 performs the above-mentioned function, and the guide shaft 3 is attached to the top of the bottle 111.
It also functions as a first support section that supports Oa.

The other end of the guide shaft 30a is supported, for example, by a cross-sectional surface 113a of a columnar member 113 integrally formed with the support member 28, and this cross-sectional surface 113a serves as a second supporting portion. A guide member 115 is provided near the columnar member 113 to regulate the position of the other end of the guide shaft 30a in the left-right direction. In FIG. 20, the distance Δ between the inner surface 112a of the fitting top part of the holding part 112 and the top surface 111a of the bottle 111 is
is set to be slightly smaller than the diameter of the guide shirts 1 to 30a.

In this configuration, when fixing the guide shaft 30a, first, one end of the guide shaft 30a is fitted into the holding part 112 as shown in FIG. 21(a). Next, by pushing down the guide shaft 30a using the flange group 114a of the flange screw 114 screwed onto the top of the columnar member 113 using the top surface 111a of the bottle 111 as a fulcrum, as shown in FIG. 21(b), The other end of the guide shaft 30a is supported by the cross-sectional surface 113a of the columnar member 113 and fixed with a screw 114.

In this fixed state, the height position of the guide shaft 30a with respect to the support member 28 is
a and the cross-sectional surface 113a of the columnar member 113. Further, as shown in FIG. 22(a), both side walls of the holding part 112 are formed so that the width becomes smaller from the base to the top, so that the screw 11
When the other end of the guide shaft 30a is pushed down by 4, the one end of the guide shaft 30a moves from the base of the holding part 112 to the top, regulating the left and right position. This means that it will be securely fixed without causing any damage. Furthermore, the second
As shown in FIG. 2(b), since the top of the holding portion 112 is elastically deformed, it can be firmly fixed without using fixing means such as screws. The axial position of the guide shaft 30a is regulated by the back surface 112b of the holding portion 112 and the back surface 113b of the columnar member 113.

Note that the pin 111 is provided near the holding part 112, and the top of the holding part 112 can be easily deformed with a small force due to the principle of leverage. In addition, by forming the top part of the holding part 112 thinly, elastic deformation was made possible, but as shown in FIG.
A similar effect can be obtained by forming 16.

1.U As detailed above, the autoloading disc player according to the present invention is of slot-in type, making it easy to load discs, and the overall size is small, making it suitable for outdoor use. .

Further, in the autoloading disc player according to the present invention, a member (bin 111) that engages with the end surface of the carriage in the movement direction when the carriage reaches the first movement limit position to prevent abnormal rocking of the carriage is attached to the carriage. Since the valve device is also used as a part of the holding means for the guide shaft as the guide means, and the number of parts is reduced, it is possible to contribute to the reduction in cost and size of the valve device. Furthermore, since a structure is adopted in which the guide shaft can be fixed with a single screw, assembly and erecting operations are extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing the entire in-vehicle A-loading disc player according to the present invention, FIGS. 2 and 3,
4 and 5 are a plan view, a front view, a left side view, and a right side view, respectively, of the internal structure of the O1 to O-Ding disk player, and FIG. 6 is an eastern perspective view of the internal structure, and FIG. Figures to 14 (key. (b), (C1 is a partially detailed view of the internal structure, Figure 15 (a). +b+, +c+ to Figure 18 explain the operation of the autoloading disc play V. FIG. 19 is a schematic perspective view showing an example of a guide shaft holding mechanism, FIG. 20 is a front view thereof, FIG. Figure (a) and +t
n is a front sectional view showing the state of the holding part before and after fixing;
FIG. 23 is a perspective view showing a modification of the holding part in FIG. 19. Explanation of symbols of main scale parts 2...Housing 2a, 10d...Opening 2b...Lid 3...Front panel 3a...・Slot 5...Disc 6...Operation button group 6a...Play start switch 7...
・Chassis 7a...Body 7b...
... Subshanige 7C ... Four parts 7f ... Cut and raised portion 8 ... Vibration isolating member 10 ... Tray 10a ... Main body 10b.・・・・・・
- Side wall members 10c, 10e, 17c, 17d, 22a. 26.51a, 54a, 54e, 55a. 55e, 57a, 58a, 58f, 85a. 86a, 97a, 97b --- Bins 10f, 1C1, 13a, 13b, 14a. 14b, 14f, 31b, 57f, 57g. 58g, 85b...Long hole 12.105...Bracket 13□ 14...Moving member 13d, 13g, 14d, 14g...Cam hole 1
4c... Rack part 14e... Cam groove 15... Guide bar 17... Interlocking shafts 17a, 17b... Arm 19... ...Power transmission structure 19a...First stage gear 19b...Final stage gear 20...Motor 20a...
Worm 22... Container 23...
...Protective film 25.85...Lever 28.51...Support member 29...Vibration isolation members 30a, 30b...Guide shaft 31...・
...Sliders 31a, 31c...Screws 31e...Protrusions 33...Case 33a...Objective lens 33t)...
...Notch 34...Kiseridge 35.
...Occurrence screw 35a ...Threaded part
35b...Circular head 37...Screw shaft 38...Motor 39...Pulley 4
1...Plate spring 42...Half nut 45...Turntable 46...Spindle motor 46a...Output shaft 46b...・
Bearing portion 47a... Holding mechanism 47b...
... Idler 52 ... Pressing member 52a ... Magnet 52b ... Buffer member 52c ...
Circumferential grooves 54, 55... Holding plates 54b, 55b... Arc parts 54c, 55c... Claws 54f, 55f, 57h, 58h, 72... Bin 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 portion 78,79...Fixing member 86...Preventing member 86b...Preventing portion 91...Guiding member 91a... ... Taper part 93 ... Play start switch 94 ...
...Intermediate member 96...Support shaft 97...
...Arm 98.101,103,104 ...Detection switch

Claims (1)

[Claims] A housing having a slot for inserting and ejecting a disc, a playing means provided in the housing, and a disc transport mechanism that transports the disc to a performance position, including a disc holding part that supports the disc at a predetermined position. The performance means is an autoloading disc player including a carriage carrying an optical pickup means, a guide means for guiding the carriage, and a drive mechanism for driving the carriage, the guide means comprising: A pair of guide shafts are provided parallel to each other so as to sandwich the carriage on both sides in the moving direction of the carriage, and a pair of holding means for holding each of the pair of guide shafts to the housing. , at least one of the pair of holding means includes an elastically deformable holding part that fits into and holds one end of the guide shaft, and a holding part that is provided near the holding part and that holds the guide shaft at its top surface. a first support part that supports the shaft; a second support part that supports the other end of the guide shaft; and a fixing means that fixes the other end of the guide shaft to the second support part by screwing. and a distance between the inner surface of the fitting top portion of the holding portion and the top surface of the second support portion is slightly smaller than the diameter of the guide shaft, and the second support portion is configured to move the carriage. An autoloading disc player, characterized in that the autoloading disc player is provided at a position where it can engage with an end face in the moving direction of the carriage when the limit position is reached.