JPH0458109B2 - - Google Patents

Description

Detailed Description of the Invention Technical Field The present invention relates to a disk player, and more particularly to an autoloading disk equipped with a disk transport mechanism that automatically loads the disk into a performance position and automatically carries it out to a predetermined position after the performance is finished. Regarding the player.

BACKGROUND ART Disc players for playing information recording discs such as digital audio discs have already been developed and have recently come into widespread use in ordinary households. However, since such conventional disk players are designed with the premise of being installed in a quiet place indoors, they are not suitable for outdoor use. Requirements for a disk player used outdoors include ease of disk loading, overall small size, and good vibration resistance and dust resistance. Especially when considering in-vehicle disc players,
Since it is often used while driving,
It is desirable to be able to transport the disk reliably.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc player that is suitable for outdoor use, and in particular can transport discs reliably and smoothly.

An autoloading disc player according to the present invention includes a housing provided with a slot for inserting and ejecting a disc, a playing means provided in the housing, and a disc holding part for supporting the disc at a predetermined position. a disc transport mechanism for transporting the disc to a performance position; and a plate-shaped guide member disposed in the housing close to the slot and guiding the disc to the slot at the time of ejection through a longitudinal opening formed along the slot. The guide member is characterized in that it has a recessed portion approximately at the center of its longitudinal opening extending substantially perpendicularly to the disk surface and expanding toward the opening.

According to the present invention having such a configuration, a concave portion extending approximately perpendicular to the disk surface is provided at approximately the center of the guide member where the leading end of the transported disk first approaches, thereby preventing warping of the disk surface. (For example, even if there are variations in the vertical position when the disk is guided), the disk can be guided easily. Also, by making the recess into a shape that expands toward the longitudinal opening side (tapered shape), the disk can be easily guided. , when the disc comes into contact with the tapered part, a component of the contact force acts along the tapered part towards the longitudinal opening, so that the disc is smoothly guided to the longitudinal opening and the slot part. It will be taken out from.

Embodiment Hereinafter, a vehicle-mounted autoloading disk player as an embodiment of the present invention will be described 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 here refers to the front direction indicated by arrow Y. Therefore, the arrow X direction in the figure indicates leftward, and the arrow Z direction indicates upward. 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 chassis 7 serving as a support member is provided within the housing 2. As shown in FIGS. The chassis 7 includes 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, the first
In the figure, only the two vibration isolating members 8 on the left side 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 (in the direction of arrow Y and the opposite direction thereof). As is particularly clear in FIG. 6, the tray 10 includes a main body 10a formed in an L-shape 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 the left end of the tray 10 slides into a pin 10c protruding from the left end or into a long hole 12a formed in the bracket 12 and extending in the front-rear direction. It is supported by freely engaging.

On the other hand, a pair of moving members 13 and 14 are arranged on both left and right sides of the chassis 7. The right moving member 14 is made of resin or the like, and is attached to the right end of the tray 10 that is slidably supported by a guide bar 15 that is fixed to the right end of the chassis 7 so as to extend in the tray movement direction, that is, in the front-rear direction. installed.
Specifically, the movable member 14 has an elongated hole 14a formed in the movable member extending in the front-rear direction.
It is supported by being slidably engaged with a pin 10e protruding from the right end. Further, the left moving member 13 is located between the tray 10 and the bracket 12, and a long hole 13a formed in the moving member so as to extend in the front-rear direction is connected to the tray 1.
It is supported by being slidably engaged with a pin 10c provided at the left end of 0. 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. Tray 1
An interlocking shaft 17 with arms 17a and 17b fixed to both ends is provided at the rear end of the tray 10 and extends in the left-right direction, and supports the tray 10 so as to be rotatable. Pins 17c and 17d are protruded from the inner surfaces of the distal ends of the arms 17a and 17b, respectively, and the pins are elongated holes 13b formed in the rear ends of the moving members 13 and 14 and extending in the vertical direction. 1
4b in a slidable manner. Chassis 7
A power transmission mechanism 19 consisting of a plurality of rotatably supported gears is provided at the right end of. 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 connected to a rack portion 1 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.
It is engaged with 4c. 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 guide bar 15.

The motor 20, the power transmission mechanism 19, and the interlocking shaft 17 including the arms 17a, 17b and the like constitute a driving force applying means for applying driving force to the moving members 13 and 14.

Below the tray 10 is a container 22 holding a disk 5 between the moving members 13 and 14.
is located. The container 22, the tray 10, and the moving members 13 and 14 constitute a disk holding section. In addition, container 22
A protective film 23 made of felt or the like is attached to the disk supporting surface 2 to prevent direct contact between the disk supporting surface and the disk 5. container 2
There are a total of four pins 22, one pair each on the left and right ends of 2.
a is provided extending in the left-right direction. The pins 22a of the container 22 are slidably engaged with four long holes 10f formed in the tray 10 extending in the vertical direction, so that the container 22 is moved in the direction perpendicular to the tray movement direction, i.e., in the direction perpendicular to the tray movement direction. It is supported so as to be movable within a predetermined range in the vertical direction. After passing through the elongated hole 10f, the pin 22a of the container 22 is slidably engaged with cam holes 13d and 14d formed in the movable members 13 and 14, respectively. The cam holes 13d and 14d have a tapered portion that slopes upward in the disk insertion direction, that is, from the front to the rear, that is, in a direction in which the container 22 moves away from the turntable, which will be described later, and an end of the tapered portion in the disk insertion direction, that is, the rear end. It is composed of a horizontal portion that continues and extends rearward, and a tapered portion that continues from the rear end of the horizontal portion and extends parallel to the tapered portion. That is, as the moving members 13 and 14 move back and forth, the container 22 moves up and down.

Next, the container 22 is held against the tray 10 until the tray 10 reaches a predetermined position on the turntable, which will be described later, that is, a position where the center of rotation of the disk 5 supported by the container 22 substantially coincides with the rotation axis of the turntable. When the tray 10 reaches the predetermined position, the container 22 is unlocked to the tray 10 and the tray 10 is locked 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, the tray 1 is mounted on the right moving member 14.
The cam groove 14e is formed such that the position in the tray movement direction coincides with the position of the recess 7c when the tray 0 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 recess 7c and the cam groove 14e projects from the swinging end of the lever. That is, the pin 26 is inserted into the recess 7c.
and the cam groove 14e. Further, the movable member 14 is formed to extend forward continuously from the cam groove 14e, and is slidably engaged with the pin 26, so that the movable member 14 is provided after the tray 10 reaches the predetermined position on the turntable. A long hole 14f that allows the movement of the holder 14 is formed.

These recesses 7c, cam grooves 14e, elongated holes 14f, and pins 26 lock the container 22 to the tray 10 until the tray 10 reaches a predetermined position on the turntable, and the tray 10 is kept at the predetermined position. When it reaches tray 10 of container 22
A locking/releasing means is configured to release the locked state of the tray 10 from the housing 2 and to lock the tray 10 to the housing 2.

Further, the lock/release means, the chassis 7,
tray 10, container 22, moving member 13,
14, a power transmission mechanism 19, a motor 20, etc., the housing 2 is
A disk conveyance mechanism is constructed to convey the disk 5 inserted through the slot 3a to the performance position, that is, onto the turntable.

Next, a description will be given of the performance means provided in the housing 2 for performing disk performance.

As shown in FIG. 6, a support member 28, which is generally shaped like an opening, 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. It is attached to the chassis 7 via four vibration isolating members 29. Two guide shafts 30a and 30b are fixed to the support member 28, extending parallel to the rotating surface of the turntable, in this case in the front-back direction, and serving as guide means. A slider 31 formed in a substantially U-shape is movably supported by the guide shafts 30a and 30b at both sides in the direction of movement, that is, at both left and right ends. As shown in FIGS. 9 and 10, the slider 31
is provided with a screw 31a extending in the moving direction of the slider, that is, in the front-rear direction, and the rectangular parallelepiped case 33 is rotatably held by the screw. That is, the case 33 rotates in a plane perpendicular to the slider movement direction. The case 33 includes an objective lens 33a for irradiating the information recording surface of the disk 5 with laser spot light, and carries an optical pickup means (other than the objective lens 33a is not shown) for reading information from the disk. There is. Further, the slider 31 and the case 33 are collectively referred to as a carriage 34.

Here, as shown in FIG. 2, for example, the tray 10 forming a part of the disk transport mechanism includes:
The disk transport mechanism is in the pre-disk transport position (second position).
A circular opening 10d is formed which faces the objective lens 33a when the carriage 34 is in 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, it is a member constituting a part of the disk transport mechanism, and is interposed between the tray 10 and the objective lens 33a when the disk transport mechanism and the carriage 34 are in the pre-performance position described above. It goes without saying that an opening similar to the opening 10d is also formed in the member. Also, as shown in Figure 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 disk transport mechanism and the carriage 34 are in the above-described rest position before playing. 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. Although not described in detail, it is also possible to adjust the light irradiation power of the optical pickup means through the openings 10d, 2a, etc.

9 and 10, a long hole 31b is formed at the end of the slider 31 in the moving direction in a plane perpendicular to the slider moving direction, extending in the left-right direction in this case. ing. The elongated hole 31b is provided corresponding to one end of 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 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 35b. That is, by rotating the biasing screw 35, the case 33 is rotated little by little about the support screw 31a.

The offset screw 35 and the circular head 3 of the offset screw
5b fits into the elongated hole 31b, the case 3
Adjustment means is configured to adjust the rotational angular position of No. 3, that is, to adjust the so-called tangential direction of the optical pickup means (not shown) provided within the case. 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, which is disposed parallel to guide shafts 30a and 30b, is rotatably attached to the support member 28 at both ends thereof. A motor 38 is disposed in front of the screw shaft 37, and the screw shaft 37 is rotationally driven by the motor via power transmission means including a pulley 39 and the like. As is particularly clear in FIG. 11, a leaf spring 41 is fixedly fixed to the slider 31 in the form of a cantilever, and a half nut 42 screwed onto the screw shaft 37 is fixedly attached to the free end of the leaf spring. It is set up.

The above-mentioned screw shaft 37 and motor 3
8, the power transmission means including the pulley 39, the leaf spring 41, the half nut 42, and peripheral small members related thereto constitute a drive mechanism for driving the carriage 34.

A turntable 45 is disposed on an extension of the movement trajectory of the carriage 34 and sandwiched between the carriage and the drive mechanism that drives the carriage, and is fixed to the support member 28. . As is clear from FIG. 7, the turntable 45 is directly rotationally driven by a spindle motor 46, which is a drive source and is provided to support the turntable. As shown in FIGS. 6 and 9, the case 33, which is a part of the carriage 34, includes a turntable 45 and a spindle motor 46.
Notch 3 that faces the case 33 and can be inserted into the part
3b is formed. When the carriage 34 is in its home position, that is, in its rest position before playing, the turntable 45 and spindle motor 46 are fitted into the cutout 33b.

As shown in FIGS. 7 and 8, the output shaft 46a of the spindle motor 46 has a holding mechanism 47a.
The handle 47b, which is rotatably supported by the handler 47b, is brought into contact with the handler 47b. These holding mechanism 47a and idler 47b constitute a close contact means for bringing the output shaft 46a and the bearing portion 46 that supports 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 turntable 45 is accurate. And it will be smooth.

The support member 28 described above and the guide shaft 30
a, 30b, the carriage 34, and the drive mechanism including the motor 38 (driving the carriage 34);
Turntable 45 and spindle motor 46
and the above-mentioned close contact means consisting of an idler 47b etc.
These and related peripheral small members constitute a playing means for performing disk performances.

Here, a method for attaching the support member 28 to the chassis 7 will be described in detail.

The four support points of the support member 28 relative to the chassis 7, that is, the positions where the vibration isolating member 29 is arranged are 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 an 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 in-vehicle autoloading disc player is mounted. By arranging the vibration isolating member 29 at the support point, 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 the vibration isolator 29 is provided at the support points, a large vibration isolation effect can be obtained. can get.

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

As shown in Figures 2, 3 and 6,
Above the container 22, the movable members 13 and 1
A plate-shaped support member 51 is provided at a position sandwiched between the two. A total of four pins 51a, one pair each, are provided at both left and right ends of the support member 51, extending in the left and right direction. The support member 51 is configured such that each of the pins 51a is slidably engaged with four elongated holes 10g 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, it is supported so as to be movable within a predetermined range in the vertical direction. Pin 51a of support member 51
is also inserted through the elongated hole 10g of the tray 10, and is slidably engaged with cam holes 13g and 14g formed in the moving members 13 and 14, respectively. The cam holes 13g and 14g are arranged in the direction in which the support member 51 leaves the turntable 45,
That is, it slopes linearly upward from the front to the rear. That is, as the movable members 13 and 14 move back and forth, the support member 51 moves toward the turntable 45.
It is designed so that it can move up and down. Note that among the cam holes 13d, 13g, 14d, and 14g formed in the moving members 13 and 14, the cam holes 13d, 14d that engage with the pin 22a of the container 22 are referred to as the first cam holes, and there are no support holes for this. Cam hole 1 that engages with pin 51a of member 51
3g and 14g are called second cam holes. The total length of the first cam holes 13d, 14d in the disk insertion direction is approximately equal to the total length of the second cam holes 13g, 14g 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 ramp action. Note that the position shown in FIG. 3 is referred to as the unclamped position of the support member 51. 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 an annularly formed magnet 52a, and the magnetic force of the magnet forms a disk clamp. The pressing member 52 and the supporting member 51 that rotatably supports it are made of a magnetic material such as a steel plate, and when the supporting member 51 is in the non-clamped position, the pressing member 52 is supported by the magnetic force of the magnet 52a. It is adapted to be attracted to the member 51. Further, as shown in FIG. 6, a buffer member 52b made of felt or the like is attached to the upper surface of the pressing member 52, and vibrations of the supporting member 51 when the supporting member 51 is in the non-clamped position are suppressed. This prevents the upper surface of the pressing member 52 from coming into direct contact with the housing 2. However, the buffer member 52 is not limited to the upper surface of the pressing member 52, 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-clamped position.

As is particularly clear in FIG.
A pair of left and right holding plates 54 and 55 are arranged on the lower surface of the holding member 51 with a pressing member 52 in between. There is. A pressing member 5 is provided at each opposing portion of the holding plates 54 and 55.
Circumferential groove 52c formed on the outer periphery of 2 (as shown in the third diagram)
Circular arc portions 54b and 55b are formed to be inserted into the press member 52c, and the diurnal groove 5 is formed in the circular arc portion.
2 claws 54c, 55 that can engage with the bottom surface of 2
c is provided protrudingly.

Also on the lower surface of the support member 51 are clamping plates 54, 5.
A pair of left and right synchronizing plates 57 and 58 are arranged behind the synchronizing plate 5, and are rotatably attached to the support member 51 via pins 57a and 58a, respectively. Each synchronizing plate 57, 58 has three arm portions 57c, 5.
7d, 57e and 58c, 58d and 58e. A long hole 5 is provided at the tip of the arm portion 58c.
8f is formed, and a pin 57f protruding from the tip of the arm portion 57c is slidably engaged. In addition, arm portions 57d, 5 protruding approximately forward.
Elongated holes 57g and 58g are also formed at the tip of each of the pins 8d, and these elongated holes are slidably engaged with pins 54e and 55e protruding from the holding plates 54 and 55, respectively. That is, the periodic plates 57 and 58 are configured to synchronize the operations of the holding plates 54 and 55. Note that the clamping plate 54 and the synchronizing plate 57 are collectively referred to as a first positioning member 61, whereas the clamping plate 55 and the synchronizing plate 58 are collectively referred to as a second positioning member 62. That is, these pair of positioning members 61 and 62 are the pressing member 52.
They are provided movably in a plane substantially perpendicular to the axis of rotation of the press member 52, and can each engage with the outer periphery of the pressing member 52 at, for example, two points (claws 54c, 55c).
Further, each of the positioning members 61 and 62 is biased in a direction in which the engaging portions of the clamping plates 54 and 55, which are a part of the two positioning members, with the outer periphery of the pressing member, that is, the claws 54c and 55c approach the outer periphery of the pressing member. It is biased by a coil spring 64 as a means.

The above-described positioning members 61 and 62 and the coil spring 64 constitute a positioning means for positioning the pressing member 52 at a predetermined position on the support member 51. Further, the positioning means;
The pressing member 52, the supporting member 51, and peripheral small members related thereto constitute a clamping mechanism that clamps the disc 5 transported to the performance position, that is, the turntable 45.

The positioning means including the above-mentioned positioning members 61, 62, etc.
In addition to positioning housing 2,
It also acts as a positioning means for positioning the disk 5 inserted through the slot 3a at a predetermined position on the container 22. As is clear from FIGS. 2 and 6, the positioning members 61 and 62 are arranged on both sides of the disk insertion path, and the positioning members 61 and 62 are arranged on both sides of the disk insertion path, and the positioning members 61 and 62 are arranged on both sides of the disk insertion path.
It is movable in a plane substantially parallel to the disk-supporting surface of the disk-carrying section (which together constitute the disk-carrying section).
Pin members 54f, 55f, 57h, and 58
h are provided in a protruding manner. These pin members 54
f, 55f, 57h, 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 is connected to each pin member 54f,
55f, 57h, and 58h urge the positioning members 61, 62 in the direction toward the outer periphery of the disk.

Here, as shown in FIG. 6, each pin member 54f, 55f, 57h, and 58h is formed with a taper that decreases in diameter toward the disk supporting surface of the container 22. However, the pin member 57h is not shown. At the time of disk loading or ejecting, the disk 5 is held between the above-mentioned pin members, and at the same time as the disk 5 is held, the force generated by the taper action of each of the pin members causes the disk to 5 is pressed toward the disk supporting surface of the container 22.

Next, a mechanism for releasing the disk from the sandwiched state by the positioning means described above 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 pin member 72 projects from the small bracket. It is set up. This pin member 72 extends in the vertical direction,
The above-mentioned positioning is performed when the tray 10 reaches a predetermined position on the turntable 45, that is, a position where the rotation center of the disk 5 carrying the container 22 that moves together with the tray substantially coincides with the rotation axis 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 means. 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 positioning member 6
Pin members 54f, 55f provided on 1, 62,
The engagement state between 57h and 58h and the outer periphery of the disk, that is, the disc clamping state, is released.

As shown in FIG. 6, the moving member 14
A pin member 72 provided in the pin member 72 is formed with a taper that decreases in diameter in the direction in which the container 22 approaches the turntable 45, that is, in the downward direction. The positioning means (consisting of positioning members 61, 62, etc.) for positioning the disk 5 at a predetermined position on the container 22 slides while contacting the pin member 72, and moves together with the container 22 in a direction substantially perpendicular to the tray movement direction. However, since the pin member 72 is tapered as described above, the contact between the pin 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 a thrust force due to a force component generated by the taper action of the pin member 72.

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

As shown in FIG. 13, inside a 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, and there are holes that are short to each other. A pair of flexible longitudinal members 76 and 77 are provided, which are arranged such that one end thereof faces each other and which close the slot 3a at their main surfaces. Each flexible longitudinal member 7
6 and 77 have a pair of fixing members 78 having an L-shaped cross section at the other end in the transverse direction, that is, the non-opposing end.
79 to the front panel 3. These flexible longitudinal members 76, 77 and fixed members 78, 79 constitute 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 sliding contact between the respective flexible longitudinal members and the disk 5 is smooth. In addition, flexible portions 76a and 77a, which are formed thinly and are particularly easy to bend, are provided near the opposing ends of the flexible longitudinal members 76 and 77, respectively.

By the way, the flexible longitudinal members 76 and 77 have conductivity, and, for example, the fixed members 78 and 79
are grounded through each. By doing this, static electricity can be removed from the disk 5 inserted through the slot 3a, and dust that has adhered to the surface of the disk 5 due to static electricity is prevented from entering into the housing 2. be. Note that when the material of the flexible longitudinal members 76 and 77 is, for example, rubber, an effective method for imparting conductivity to the material is to mix carbon particles or the like.

Further inside the flexible longitudinal members 76, 77, a plate-shaped guide member 110 as shown in FIG. 19 is arranged. This guide member 110 is connected to the slot 3a.
It has an opening 110a formed along the disk, and this opening 110a serves to guide the disk to the slot 3a during ejection. That is, when the disk is ejected, the distal end of the disk transported by the disk transport mechanism in the ejection direction first touches the guide member 110.
into the slot 3 by being guided by the guide member 110.
It will lead you smoothly to a. This guide member 110 may be arranged in place of the flexible longitudinal members 76, 77.

Here, if the disk is warped or bent due to its own weight, the leading end of the disk in the ejection direction may be located below the lower end of the opening 110a of the guide member 110 and may not be able to enter the opening 110a smoothly. Conceivable. In consideration of such a case, a recess 110b is formed in the guide member 110 approximately at the center of the lower end of the opening 110a, so that the leading end in the disk ejection direction is aligned with the opening 110a of the guide member 110. Even if the disk is located below the bottom edge, the tip of the disk will first reach the recess 110.
b, and is then smoothly guided to the opening 110a by the action of the recess 110b.

A cloth-like elastic material 111 made of felt or the like is adhered to the inside of the guide member 110, and a slit 111a is formed in this elastic material 111 so that the disk can pass through it smoothly. This elastic material 111 functions to prevent dust and the like from entering into the housing 2, and also functions as a protective material or a buffer material when the disk is ejected.

As shown in FIGS. 2, 5 and 6,
Bracket 12 fixed to the left end of chassis 7
A lever 85 extending substantially in the front-back direction is arranged on the right side of the lever 85, and is rotatably attached to the bracket 12 at a substantially central portion in the longitudinal direction by a pin 85a. This lever 85 is the moving member 1
It is designed to rotate in conjunction with 3. 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 pin 86a projects from the left end of the prevention member 86, and is slidably engaged with a long hole 85b formed at 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 as the disc rotates, the prevention part 86b provided on the prevention member crosses the slot 3a and prevents insertion of the disk from the slot 3a. There is.

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, the disk uses a part of the power for transporting the disk to prevent double insertion of the disk. By using the power to drive the means, a special drive mechanism for driving the disk double insertion prevention means is no longer required. Therefore, it is becoming easier to downsize and reduce the cost of the entire player.

As shown in FIGS. 2, 6, and 14a and 14c, a disk insertion path located deep in the housing 2 guides the disk 5 inserted through the slot 3a to a predetermined position on the container 22. A guide member 91, which acts as a guide means, is arranged to face the disk carrying surface of the container 22, and is fixed, for example, to the lower surface of the tray 10. The guide member 91 is formed by bending a steel plate, for example, and has a tapered portion 91a at its front end that is inclined toward the disk-supporting surface of the container 22 in the disk insertion direction.

As shown in FIGS. 2, 6, and 14a, 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 start switch 93 is provided so as to engage the outer periphery of the disc when pressed slightly. However, this play start switch 93 is provided with an intermediate member 94 (FIG. 14 b
(also shown) engages the outer periphery of the disk.

As shown in FIG. 2, the main body 1 of the tray 10
A support shaft 96 extending in the vertical direction is fixed to the lower surface of the right end of Oa. An arm 97 formed in a substantially dogleg shape is rotatably attached to the support shaft 96 at substantially the center thereof. arm 97
Pins 97a and 97b are protruded from the lower surface of both ends of the container 2, and the pin 97a on the left end side
It is possible to engage with the outer periphery of the disk 5 positioned on the disk 2 . The support shaft 96 also includes a detection switch 9.
A switch holding member 99 that holds the switch 8 so as to be able to engage with the left end portion of the arm 97 is swingably attached. This switch holding member 99 is biased clockwise in FIG. 2 by a coil spring (not shown). The arm 97 engaged with the switch holding member 99 via the detection switch 98 is also given a repulsive force in the same direction as the switch holding member 99 by this coil spring (not shown).

The above-mentioned support shaft 96, arm 97, detection switch 98, switch holding member 99, and related peripheral small members constitute a mechanical detection means for detecting that the disk 5 is positioned on the container 22. ing. Further, when the tray 10 moves a predetermined amount rearward from the position shown in FIG. The cut and raised portions 7f are brought into contact with each other.

As shown in FIGS. 6 and 11, a detection switch 101 is provided on the right side of the carriage 34 to detect when the carriage has returned to its home position, that is, to the rest position before the performance starts. There is. This detection switch 101 is
A projection 31e protruding from a slider 31 which is a component of the carriage 34 engages with an actuator 101a of the detection switch to generate a detection signal. There is.

As shown in FIG. 4, a detection switch 103 is fixed at the right end of the chassis 7 to detect when the tray 10 has reached its forward movement limit position by means of a lever that engages with a portion of the tray 10. has been done.

Also, as shown in FIG. 6, the chassis 7
At the right end of the switch 103 and behind the detection switch 103, there is a mark indicating that the moving member has reached its backward movement limit position by engaging a part of the moving member 14;
Therefore, a detection switch 104 is fixedly installed to detect when disk loading and clamping are completed. However, this detection switch 104 is attached to the chassis 7 via a bracket 105.

In addition, the aforementioned operation button group 6, play start switch 93, and detection switches 98, 101, 10
Each signal emitted from 3 and 104 is transmitted to a control section (not shown) disposed at a predetermined position within the housing 2.
transmitted to. The motors 20 and 38 are controlled by operation signals sent from the control section in response to these signals.
In addition, the spindle motor 46 operates at the timing described later.

Next, the operation of the in-vehicle autoloading disc player having the above configuration 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, as shown in FIG. 1, the disk 5 is inserted into the housing 2 through the slot 3a. At the same time as the disk 5 is inserted from the slot 3a, the positioning member 61 shown in FIG.
It engages with pin members 54f and 55f provided on 62, and advances while pushing both positioning members 61 and 62 apart to the left and right. Left and right pin members 54f and 55
When the rotation center of the disk 5 crosses the line connecting the axial centers of the disk 5, the pin members 54f and 55f are biased toward the outer periphery of the disk, so the disk 5 will not remain inside the housing 2 even if you release your hand. I'm drawn into it. Also, at this time, the guide member 91 effectively guides the disk 5, and the disk 5 is moved toward the container 22.
is positioned at a predetermined position above. Incidentally, since the disk 5 is positioned while being held between the four pin members 54f, 55f, 57h and 58h, the disk once positioned will not shift due to external vibrations such as vehicle body vibrations.

As shown in Figure 15a and b, disk 5
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 is moved, for example, as shown in FIG.
is rotated counterclockwise at . Therefore, the left end of the arm 97 engages with the detection switch 98 to operate the detection switch (see Fig. 15b).
condition). 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 slidably 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 the container 22 is therefore locked relative to the tray 10. Therefore, by the rotation of the motor 20, only the moving members 14, 13, the tray 10, and the container 22 are moved rearward. Note that the pin 26 is inserted into the cam groove 14e.
slide over the right end of chassis 7 while being engaged with.

Almost at the same time when the tray 10 and the container 22 are moved rearward by a predetermined amount and the disk 5 is housed in the housing 2, the pin 97b protruding from the right end of the arm 97 is moved as shown in FIG. 15c. It comes into contact with the cut and raised portion 7f of the chassis 7. As the pin 97b comes into contact with the cut and raised portion 7f in this manner, the engagement state between the arm 97 and the detection switch 98 is maintained. Therefore, the motor 20 continues to rotate, and the disk 5 is further transported rearward. Along with this, the arm 97 is rotated counterclockwise in FIG. 15c by the cut and raised portion 7f, and the engagement state of the arm 97 with the disk 5 is released. In this state, the rotation center of the disk 5 substantially coincides with the rotation axis of the turntable 45.

At the same time as the engagement between the arm 97 and the disk 5 is released, the pin 26 leaves the cam groove 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.
The locked state of the container 22 and, therefore, the locked state of the container 22 with respect to the 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 pin 22a protruding from the container 22 is connected to the cam hole 13d provided in the moving members 13 and 14, respectively.
and 14d, and as shown in FIG. 18, the container 22 moves downward while carrying 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. Further, by moving only the movable members 13 and 14 backward, the pin 51a protruding from the support member 51 of the clamp mechanism slides along the cam holes 13g and 14g formed in the movable members 13 and 14, respectively. Then, as shown in FIG. 18, the support member 51
At the same time, the pressing member 52 approaches the disk 5, and the disk 5 is clamped. The vertical movement stroke of the support member 51 is about 8.5 mm, and the vertical movement stroke of the container 22 is about 6.5 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 13d and 14d, with which the pin 22a protruding from the container 22 is slidably engaged, are This is a result of having a horizontal portion in the middle of the .

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 is moved to the detection switch 10 as shown in FIG.
4 to operate the detection switch,
Motor 20 is stopped. Performance is possible in this state. Note that the lever 85 is rotated in conjunction with the rearward movement of the moving member 13, so that the prevention member 86 prevents double insertion of the disk from the disk insertion slot 3a.

Operation button group 6 arranged on the front panel 3
When the play start switch 6a is pressed and an operation signal for performance is issued, the turntable 45 rotates and at the same time the carriage 34 begins to operate and the performance begins.

When the performance ends and the carriage 34 reaches its travel limit position, the carriage 34 and turntable 45 are stopped, and at the same time, the motor 20 begins its reverse operation. Therefore, the tray 10, the moving member 1
3, 14, the container 22 and the pressing member 52 are returned to the rest position before the performance by following a process completely opposite to the operation at the time of disk loading described above. Further, the carriage 34 is also returned to the home position.

In this way, the disk 5 is recovered.

If you want to play the disc 5 again after it has been played, press the play start switch 93 slightly by pushing the disc in the disc insertion direction.
is activated and the performance is played again.

It should be noted that although the autoloading disk player is shown for use in a vehicle, it goes without saying that it can also be used indoors for home use.

Effects of the Invention As detailed above, in the autoloading disc player according to the present invention, the slot-in type makes it easy to load discs, and the overall size is small, so it is suitable for outdoor use, especially for in-vehicle use. It is suitable for use.

Particularly, in the autoloading disc player according to the present invention, a guide member is provided inside the slot and has a longitudinal opening formed along the slot, and a disc surface is provided at approximately the center of the longitudinal opening. Since a concave portion is formed that extends approximately perpendicularly to the longitudinal opening side, even if the tip of the disk is bent due to its own weight during ejection, or the disk is warped, it can be guided to the slot reliably and smoothly. It is.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing the entire in-vehicle autoloading disk player according to the present invention, and FIGS. 2, 3, 4, and 5 each show the internal structure of the autoloading disk player. A plan view, a front view, a left side view, and a right side view; FIG. 6 is a perspective view of the main part of the internal structure; FIGS. 7 to 14 a, b, and c are partially detailed views of the internal structure; 15a, b, c to 18 are diagrams for explaining the operation of the autoloading disk player, and FIG. 19 is a perspective view showing a guide member disposed inside the slot. Explanation of symbols of main parts, 2...Housing, 2
a, 10d...Opening, 2b...Lid, 3...Front panel, 3a...Slot, 5...Disk, 6...Operation button group, 6a...Play start switch, 7...Chassis, 7a ...Body, 7
b...Sub chassis, 7c...Recessed portion, 7f...Cut and raised portion, 8...Vibration isolating member, 10...Tray,
10a...Main body, 10b...Side wall member, 10c,
10e, 17c, 17d, 22a, 26, 51
a, 54a, 54e, 55a, 55e, 57a,
58a, 57f, 85a, 86a, 97a, 97
b...Pin, 10f, 10g, 13a, 13b,
14a, 14b, 14f, 31b, 58f, 57
g, 58g, 85b... Long hole, 12, 105...
Bracket, 13, 14... Moving member, 13d,
13g, 14d, 14g...cam hole, 14c...
Rack part, 14e...Cam groove, 15...Guide bar, 17...Interlocking shaft, 17a, 17b...
Arm, 19...power transmission mechanism, 19a...first stage gear, 19b...last stage gear, 20...motor,
20a...Worm, 22...Container, 23...
...Protective film, 25,85...Lever, 28,51...
...Supporting member, 29...Vibration isolating member, 30a, 30b
...Guide shaft, 31 ...Slider, 31
a, 31c...Screw, 31e...Protrusion, 33...
Case, 33a... Objective lens, 33b... Notch, 34... Carriage, 35... Offset screw, 3
5a...screw part, 35b...circular head, 37...
Screw shaft, 38...Motor, 39...
Pulley, 41... leaf spring, 42... half nut, 45... turntable, 46... spindle motor, 46a... output shaft, 46b... bearing section, 47a... holding mechanism, 47b... idler,
52...Press member, 52a...Magnet, 52
b...Buffer member, 52c...Circumferential groove, 54, 55
...Holding plate, 54b, 55b...Circular part, 54
c, 55c...claw, 54f, 55f, 57h, 5
8h, 72...Pin member, 57c, 57d, 57
e, 58c, 58d, 58e...arm part, 5
7, 58... Synchronization plate, 61... First positioning member, 62... Second positioning member, 64... Coil spring, 71... Small bracket, 76, 77
...Flexible longitudinal member, 76a, 77a... Flexible portion, 78, 79... Fixed member, 86... Preventing member, 86b... Preventing portion, 91... Guide member, 91
a...Tapered portion, 93...Play start switch, 94...Intermediate member, 96...Support shaft, 97...
... Arm, 98, 101, 103, 104 ... Detection switch, 99 ... Switch holding member, 101
a... Actuator, 110... Guide member.

Claims (1)

[Claims] 1. A housing equipped with a slot for inserting and ejecting a disc, a performance means provided in the housing, and a disc transport mechanism that transports the disc to a performance position, including a disc carrying section that supports the disc at a predetermined position. , a plate-shaped guide member that guides the disc during ejection to the slot through a longitudinal opening formed along the slot and disposed close to the slot in the housing, the guide member having a longitudinal opening formed along the slot; What is claimed is: 1. An autoloading disc player having a concave portion substantially perpendicular to the disk surface and expanding toward the longitudinal opening side at a substantially central portion of the autoloading disk player.