JPS60214468A - Automatic loading disc player - Google Patents

Abstract

PURPOSE:To improve the dust proof performance by providing an opening to a disc carrying mechanism so as to wipe out the dust adhered to the surface of an objective lens of an optical pickup means without detaching the disc carrying mechanism. CONSTITUTION:When the disc carrying mechanism is at the position before the disc is carried and a carriage 34 is at the home position, that is, at the still position before playing, a circular opening 10d opposed to an objective lens 33a is formed to a tray 10 being a part of the disc carrying mechanism. An optical pickup means having the objective lens 33a irradiating a laser spot light to the information recording plane of the disc 5 is carried in the case 33 of the carriage 34. The circular opening 2a is formed to the upper face of the housing 2. The cleaning of the objective lens 33a is attained without detaching the disc carrying mechanism and the housing.

Description

DETAILED DESCRIPTION OF THE INVENTION 1L1 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.

Disc players for playing information recording discs such as 11 Trap Gloss Digital ODE and IA disc have already been developed and have recently come to be widely used in ordinary households.

However, since such conventional disc players are designed and designed with the assumption that they will be installed in a quiet place indoors, they are not suitable for outdoor use. The requirements for a disc player used outdoors include ease of disc loading, overall compactness, and good vibration resistance and dust resistance.

SUMMARY OF THE INVENTION The object of the present invention is suitable for outdoor use.
It is an object of the present invention to provide a disc player that has particularly good dustproof properties.

The autoloading disc player according to the present invention comprises:
a housing provided with a slot into which a disc to be played is inserted; a playing means provided in the housing; a disc transport mechanism that transports the disc to a performance position and includes a disc carrying part that supports the disc at a predetermined position. The performance means carries a turntable and an optical pickup means including an objective lens for irradiating the recording surface of the disc with a sub-light, and is disposed below the disc transport mechanism and is arranged to support the turntable. and a sharpening ridge that is movable in a direction substantially parallel to the rotating surface, and the disc transport mechanism faces the objective lens when the disc transport mechanism is in a pre-disk transport position and the carriage is in a home position. It is characterized by having a frontage formed therein.

-1-1 Hereinafter, an in-vehicle A-loading disc play 17 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 herein refers to the front direction indicated by arrow Y. Therefore, the arrow X direction in the figure indicates the left side, and the arrow Z direction indicates the upper 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 chassis 7 serving as a support member is provided within the housing 2. As shown in FIGS. In addition,
The chassis 7 consists of a main body 7a and a sub-chassis 7b fixed to the front end of the main body. As shown in FIGS. 1 and 12, the chassis 7 is supported by the housing 2 via four vibration isolating members 8 made of rubber or the like. However, only the two vibration isolating members 8 on the left side are shown in FIG. A tray 10 is provided on the tray 17 so as to be movable in a direction parallel to the rotating surface of the turntable, which will be described later, in this case in the front-rear direction (direction of arrow Y and the opposite direction). As is particularly clear in FIG.
The main body 10a is formed into a single character shape, and the side wall member 10b is screwed to the right end of the main body. A placket 12 is fixed to the left end of the chassis 7, and the left end of the tray 10 has a length formed by extending a bin 10c projecting from the left end onto the bracket 12 in the front-rear direction. It is supported by slidably engaging the hole 12a.

On the other hand, Si1? - A pair of moving members 1 are provided on both left and right sides of the shifter.
3 and 14 are arranged. The right moving member 14 is made of resin or the like, and has a guide bar 15 fixedly attached to the right end of the chassis 7 so as to extend in the ray movement direction, that is, in the front-rear direction.
The right end portion of the tray 10, which is slidably supported by the tray 10, is marked with an arrow.

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 1°. -ing 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 with a number marked on the left end of the tray 10. It is supported by being slidably engaged with the bottle 10c. 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. At the rear end of the tray 10, an interlocking shaft 17 with arms 17a and 1711 fixed to both ends is installed and extends in the left-right direction, and is rotatably supported by the tray 10. . Arm 17a, 1
Bottles 17c and 17d are respectively protruded from the inner surface of the tip end of the movable member 13.14, and the bins are respectively inserted into elongated holes 13b and 14b formed in the rear end of the movable member 13.14 and extending in the vertical direction. They are movably 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 1!119, and as is particularly clear in FIG. It meshes with.

Further, the final stage tooth 1i19b 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. Final stage gear 19b and rack section 14
The engagement position with d 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 above motor 20, power transmission mechanism 19, and arm 17
A, 17b, etc., and the interlocking shaft 17 constitute a driving force f] applying means for applying a driving force to the moving members 13 and 14.

A container 22 for holding the disc 5 is arranged below the tray 10 in a position sandwiched by the moving members 13, 14.

The container 22, the tray 10, and the moving members 13 and 14 constitute a disk holding section. It should be noted that a protective film 23 made of felt or the like is attached to the disk supporting surface of the container 22 in order to avoid direct contact between the disk supporting surface and the disk 5. At both left and right ends of the container 22, a pair of f bottles 22a, π14 bottles, are provided extending in the left and right direction. The container 22 is configured such that each of the bins 22a is slidably engaged with four elongated holes 10f formed in the tray 10 to extend in the vertical direction, so that the container 22 is moved to the tray 10 in a direction perpendicular to the tray movement direction, that is, in the vertical direction. It is supported so as to be movable within a predetermined 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 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 a rear end that is connected to the end of the tapered portion in the disk insertion direction. It is comprised of a horizontal part that extends rearward and continuous with the horizontal part, and a tapered part that extends parallel to the tapered part and continues from the rear end of the horizontal part. That is, the container 22 is configured to move up and down as the moving members 13 and 14 move back and forth.

Next, the tray 10 is placed at a predetermined position on the turntable which will be described later, that is, the disc 5 supported by the container 22.
The container 22 is locked to the 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 container 22 is locked to the tray 10. 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 recess 7c when the tray 16 is at a predetermined position on the turntable.

A lever 25 is swingably installed at the rear end of the tray 10, and a pin 26 that can be engaged with the recess 7C and the cam groove 148 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, moving member 1
4 is formed to extend forward continuously from the cam groove 140 and is slidably 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 14f is formed to allow this.

These four parts 7c, cam groove 14e1 long hole 14f and bottle 2
6, the container 22 is locked to the tray 10 until the tray 10 reaches a predetermined position on the turntable, and when the trays 1 to 10 reach the predetermined position, the container 22 is locked with the tray 10. A lock/release means is configured to release the tray 10 from the housing 2 and to lock the tray 10 to the housing 2.

Further, the above-mentioned driving force (=
A disk conveying mechanism for conveying the disk 5 inserted through the slot 3a of the housing 2 to the playing position, that is, onto the turntable, is constituted by the I feeding means.

Next, the playing means provided in the housing 2 for playing the disc will be explained.

As shown in FIG. 6, a supporting 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. It is attached to the sill shift via four vibration isolating members 29 consisting of. Two guide shafts 30a and 30b are fixed to the support member 28 and extend in parallel to the rotating surface of the turntable, in this case in the front-rear direction, and serve as guide means. Gaibishi 1
The fluffy l-30a, 30b has a slider 31 formed in a substantially U-shape that is movable and has side portions in the moving direction.
That is, it is supported at both left and right ends.

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

Here, as shown in FIG. 2, for example, in the tray 10 forming a part of the disk transport mechanism, the disk transport mechanism is in the pre-disk transport position (the state shown in FIG. 2) and the carriage 34 is 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 number was designed to wipe the disc 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, an opening 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 above-mentioned frontage section 10d, this opening section 2a is also positioned so as to face the objective lens 33a when the disk transport mechanism and the cartridge 34 are in the above-mentioned rest position before playing. A stud body 2b is also screwed to the housing 2 and closes the opening 2a. 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.

However, as shown in FIGS. 9 and 10, the slider 31 has elongated holes 31 extending in the horizontal direction in a plane perpendicular to the slider movement direction at both ends of the slider 31.
b is formed. The long holes 31 and b are numbered in correspondence with one end of rotation of the case 33, and the circular head 35b of the biased screw 35 whose threaded portion 35a is screwed into the case 33 is fitted into the long hole. are doing. 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. By rotating the biasing screw 35, the case 33 is slightly rotated around the support screw 31a.The biasing screw 35 and the circular head 35b of the I screw Adjustment of the rotational angle position of the elongated hole 31b and the nyo'c1 coos 33 that fit together, that is, adjustment of the so-called tangential direction of the optical pickup means (not shown) installed in stages in the case. Adjustment means is configured to perform the adjustment.After the adjustment is completed, it is fixed with a 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 arranged in front of the screw shaft 37.
7 is adapted to be rotationally driven by the motor (via a power transmission means including a pulley 39, etc.).As is particularly clear in FIG. The free end of the plate spring has a half nut 4 screwed onto the screw shaft 37.
2 is permanently installed.

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 an extension of the movement trajectory of the carriage 34 at a position 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 in a GJ to support the turntable.

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 portion of the turntable 45 and the spindle motor 46 facing the case 33 can be inserted. It is formed. When the kick ridge 34 is at the home position of the main 11, that is, at a rest position before playing, the turntable 45 and spindle motor 46 are fitted into the cutout 33b.

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

These holding mechanism 47a and idler 47b constitute a close contact means for bringing the output shaft 46a and the bearing portion 46b that supports it into close contact with each other. Normally, a gap of about 10 μm occurs between the output shaft 46a and the bearing portion 46b, but this gap is corrected by using the above-mentioned contact means, and the rotation of the output shaft 46a and therefore the turntable 45 is improved. The process becomes accurate and smooth.

- The above-mentioned support member 28 and guide shafts 71 to 30a, 3
0b, the carriage 34, the driving machine 4F4 (driving the carriage 34) including the motor 38, the close contact means consisting of the turntable 45, the spindle motor 46, the idler 47b, etc., and the surrounding small members related to these. These 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 four support points of the support member 28 with respect to the chassis 7, that is, the positions where the vibration isolating member 29 is arranged are centered on the midpoint between the movement trajectory of the center of gravity of the carriage 34 and the rotation axis of the turntable 45. It is provided at equal distance N1 on the arc. The vibration isolating member 29 is provided to protect the performance means from external vibrations such as body vibrations of the automobile in which the in-vehicle autoloading disc player is mounted, and the supporting point of the supporting member 28 is as described above. By placing the vibration isolating member 29 in stages at the support point, the vibration damping 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. A support point of the support member 28 is provided on an arc centered on the center of gravity of the playing means when it is at the midpoint, and equidistant from it, and a vibration isolating member 29 is provided at the support point. Effects can be obtained.

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

As shown in FIGS. 2, 3, and 6, a plate-shaped support member 51 is provided above the =1 antenna 22 at a position sandwiched between the moving members 13 and 14. As shown in FIGS. At both left and right ends of this support member 51, there are 14 bottles 5, one pair each.
1a is provided extending in the left-right direction. Support member 5
1, each of these bins 51a is slidably engaged with four elongated holes 109 formed in the tray 10 to extend in the vertical direction, so that the tray 10 can be moved in a direction perpendicular to the tray movement direction, that is, in the vertical direction. It is supported movably within a predetermined range. The bottle 518 of the support member 51 is also inserted into the elongated hole 10c+ of the tray 10, and is also inserted into the moving part 4.
Cam holes 130 and 14g formed in 113 and 14 respectively
is slidably engaged with. The cam holes 130 and 14g are linearly inclined upward in the direction in which the support member 51 moves away from the turntable 45, that is, from the front to the rear. In other words, the support member 51 moves up and down with respect to the turntable 45 as the moving members 13 and 14 move back and forth.

Note that the cam holes 13d formed in the moving members 13 and 14
, 13! Container 2 among J and 146 and 14o
The cam holes 13d and i4d that engage with the second bottle 22a are
This is called a cam hole, and the pin 51a of the support member 51 is called a cam hole.
The cam holes 13 (1 and 141J are referred to as second cam holes) that engage with the second cam holes 13a and 141.
The length is approximately equal to the total length in the disk insertion direction of No. 1.

A pressing member 52 that cooperates with the turntable 45 to perform a disc clamping action is rotatably mounted on the support member 51 in stages. 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 t and the pressing member 52 comes into contact with the surface of the disk placed on the turntable 45 is referred to as the clamp position. The support member 51 moves between the clamp position and the non-clamp position. As also shown in FIG. 3, the suppressing 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.
When in the non-clamped position, the pressing member 52 is attracted to the supporting member 51 by the magnetic force of the magnet 52a. Also, as shown in Figure 6,
A buffer member 52b made of felt or the like is adhered to the upper surface of the suppressing member 52, and vibration of the supporting member when the supporting member 51 is in the non-clamped position causes the upper surface of the suppressing member 52 and the housing 2 to contact each other. It is designed to avoid direct contact. However, this buffer member 52 is not limited to the upper surface of the pressing member 52, but is also provided on the housing 2 that faces the suppressing member 52 when the supporting member 51 is in the non-clamping position.
It may be provided in a part of.

As is particularly clear in FIG. 2, a pair of left and right holding plates 54 and 55 are arranged on the lower surface of the support member 51, sandwiching the pressing member 52, and each holding three bottles 54a and 55.
Support member 51 is movable in the left and right direction via 5a.
I'm being kicked. A circumferential groove 52c (
The circular arc portions 54b and 55b are formed to be fitted into the circumferential groove 52 of the pressing member 52.
Two protruding claws 54c and 55C that can be engaged with the bottom surface of C are provided.

A pair of left and right synchronization plates 57.58 are also provided on the lower surface of the support member 51 behind the clamping plates 54.55, and are rotatably attached to the support member 51 via bins 57a and 58a, respectively. ing. Each synchronization plate 57, 58 has three arm portions 57c, 57d, 57e and 58c, 58.
d and 58e. A long hole 57f is formed at the tip of the arm portion 57C, and a bottle 58f protruding from the tip of the arm portion 58c is slidably engaged therein.

Further, elongated holes 57Q and 58g are also formed at the tips of the arm portions 57d and 58d that protrude approximately forward, and the two step holes are filled with the bins 54.
e and 55e, respectively. In other words, the synchronizing plates 57 and 58 are configured to synchronize the operations of the clamping plates 54,55. Note that the clamping plate 54 and the synchronizing plate 57 are collectively referred to as the first positioning member 61, whereas the clamping plate 55 and the synchronizing plate 58 are referred to as the second positioning member 61.
It is collectively referred to as the position determining member 62. The 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 of them has, for example, two positions.
It can engage with the outer periphery of the suppressing member 52 at the points (claws 54C, 550).

Further, each of the positioning members 61 and 62 is arranged so that the engaging portions of the clamping plates 54 and 55, which are part of the positioning members, in the h direction where the claws 54C and 55C approach the outer periphery of the pressing member. The biasing means 1 is biased by a coil spring 64.

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

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

The positioning means including the above-mentioned positioning members 61, 62, etc. not only positions the pressing member 52 on the support member 511, but also positions the disk 5 inserted through the slot 3a of the housing 2 at a predetermined position on the container 22. It also acts as a positioning means for positioning. As is clear from FIGS. 2 and 6, the positioning members 61 and 62 are arranged on both sides of the disk insertion path, and the container 22 (together with the tray 10 and the moving members 13, 14 constitutes a disk carrier) It is movable in a plane substantially parallel to the disk supporting surface of the disk.

Holding plate 54 which is a component of each positioning part U61.62
．． Bin members 54f, 55f, 57h and 5811 are provided protruding from the lower surfaces of 55 and synchronizing plates 57 and 58, respectively. These bin members 54[.

55F, 5711, and 5811 extend substantially perpendicularly to the disk supporting surface of the disk 22, and act as engaging portions that engage with the outer periphery of the disk 5. Note that the coil spring 64 is attached to each bottle member 54f, 55f, 57h, and 5
Positioning part 061 in the h direction where 811 approaches the disk outer periphery
, 62 are energized.

Here, as shown in FIG. 6, each bottle member 54f
, 55r, 57h, and 58h are tapered to reduce their diameters toward the disk supporting surface of the container 22. However, the bottle member 57h is not shown. When loading or ejecting a disc, the disc 5 is clamped by the respective bin members, and at the same time as the disc 5 is clamped, the disc 5 is pushed into the container 22 by a component force generated by the taper action of each bin member. It is suppressed toward the disk carrying surface.

Next, a description will be given of the m-lateral movement for releasing the disc clamping state by the above-mentioned positioning means.

As shown in FIGS. 2 and 6, a small bracket 71 shaped like a single character is fixed to the upper end of the right moving member 14, and a bin member 72 is attached to the small bracket 1. is installed 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 moving together with the tray is the rotation 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 point t 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 571+ provided on the positioning members 61 and 62 are moved.

The engagement state between 58h and the outer periphery of the disk, that is, the disk clamping state, is released.

As is clear from FIG. 6, the bin member 72 stacked on the movable member 14 is formed with a taper whose diameter decreases in the direction in which the container 22 approaches the turntable /I5, that is, in the downward direction. The positioning means (consisting of positioning members 61, 62, etc.) that aims to position the disc 5 at a predetermined position H21 on the container 22 is located on the bin member 72.
It slides in contact with the container 22 and reciprocates with the container 22 in a direction substantially perpendicular to the direction of movement of the 1.
Since the taper is formed on the bottle member 72 as indicated by L, 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 is subjected to a compressive force due to 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, a flexible material such as rubber is formed in the shape of a plate inside the disk insertion fronts 1 to 38 formed on the front panel 3 that constitutes the front part of the housing. A pair of flexible longitudinal members 76 and 77 are provided, which are arranged such that one end in the transverse direction faces each other and close the slot 3a at the main surface. Each of the flexible longitudinal members 76 and 77 has a pair of fixing members 78. and 77.Jj at the other short end, that is, the non-opposed end thereof, and has a cross-section shaped like an angular shape.
79 is attached to the front panel 1-panel 3.

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 sliding contact between the respective flexible longitudinal members and the disk 5 is smooth. Further, a spacer is formed near each opposing end of the flexible longitudinal member 76,77.
C. Flexible parts 76a and 77a, which are particularly easy to bend, are provided, respectively.

The flexible longitudinal members 76 and 77 are electrically conductive and are grounded via fixed members 78 and 79, respectively. By doing this, static electricity can be removed from the disk 5 inserted from the fluorocarbon h3a, and dust attached 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, 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 disposed 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 8
5 is configured 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 in the opposite direction). A pin 86a is protruded from the left end of the prevention member 86, and is slidably engaged with a long hole 85b formed in the front end of the lever 85. The lever 85 and the prevention member 86 constitute a double insertion prevention means for preventing double insertion of a disk from the wrong slot 3a. That is, as the prevention member 86 moves up and down with the rotation of the lever 85, the prevention part 86b installed on the prevention member crosses the slot 3a and prevents the insertion of the disk from the slot 3a. It was made to be (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, a part of the power for transporting the disk is transferred to the disk double insertion prevention means. By using it as power to drive 1. This eliminates the need for a special drive mechanism for driving the disk double insertion prevention means. Therefore, it is easier to downsize and reduce the cost of the entire player.

As shown in FIGS. 2, 6, and 14 (al, <C), the disk 5 inserted from the sockets 1 to 3a is inserted into the disk insertion path 1 deep in the housing 2. 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 holding surface of the container 22, and is fixed to the lower surface of the tray 10, for example. For example, it is formed by bending a steel plate, and a tapered portion 91a is formed at the front end thereof so as to approach the Y-isk supporting surface of the diagonal disk 22 in the direction of disk insertion.

As shown in FIG. 2, FIG. 6, and FIG.
A play star switch 93 is provided so that it engages with the outer periphery of the disc when it is slightly pushed in the disc insertion direction. However, this Playstar 1
~Switch 93 is provided in front of the play start switch so as to be movable in the front and back direction, and
Intermediate member 94 to which Iasuno J has been applied (Fig. 14(b)
(also shown) engages the outer periphery of the disk.

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 10a of the tray 10. An arm 97 formed in a substantially dogleg shape is rotatably attached to the support shaft 96 at substantially the center thereof. There are bins 978.9 on the bottom surface of both ends of the arm 97.
7b are provided in a protruding manner, and the bin 97a on the left end side can be engaged with the outer periphery of the disc 5 positioned on the container 22. The support shaft 96 also includes a detection switch 98.
A switch holding member 99 that holds the switch so as to be able to engage with the left end of the 7-m 97 is swingably attached. The arm 97, which is engaged with the switch holding member 99 via the detection switch 98, is also provided with a bias in the cutting direction by this coil spring (not shown).
9 and is given an inward anti-light force.

The above-mentioned support shaft 96, arm 97, detection switch 98.
The switch holding member 99 and the peripheral small members related thereto constitute mechanical detection means for detecting that the disk 5 is positioned on the container 22. Further, when the tray 10 moves backward a predetermined distance C from the position shown in FIG. 2 and reaches a predetermined position, the arm 9
A bottle 97b protruding from the right end of the chassis 7 is provided near the rear end of the chassis 7 so as to come into contact with the cut-and-raised portion 7''.

As shown in FIGS. 6 and 11, the carriage 34
A detection switch 101 is installed on the right side of the player to detect when the carriage has returned to its home position, that is, the rest position before the performance starts. Is this detection switch 101 key 1? It is fixed to a support member 28 that supports the ridge 34, etc., and a protrusion 31e protruding from the slider 31, which is a component of the key 1ν ridge 34, engages with the actuator 101a of the detection switch to generate a detection signal Jφ. It is done like this.

As shown in FIG. 4, a detection switch 103 is fixed at the right end of the chassis 7, which detects when the trays 1 to 10 have reached the forward movement limit position by engaging with a part of the tray 10. It is set up.

Further, as shown in FIG. 6, a movable member 14 is located at the right end of the chassis 7 and behind the detection switch 103.
A detection switch 104 is fixedly installed to detect that the movable member has reached the backward movement limit position by engaging with a portion of the disc, and that disc loading and clamping have been completed. , this detection switch 10
4 is attached to the chassis 7 via the bracket 105.
]

In addition, the operation button group 6, play start switch 93, detection switches 98, 101, 103 and 10 described in fiJ
Each signal emitted from the housing ring 2 is transmitted to a control section (not shown) disposed at a predetermined position within the housing ring 2. The motors 20 and 38 and the spindle motor 46 are activated at timings described in 4 below by operating signals sent from the control section in response to these signals.

Next, the operation of the in-vehicle disc player 71-1 to 71-1 with the above-mentioned configuration will be briefly explained in accordance with the playing procedure. In addition, Figures 1 to 5 show the disc play 1.
This shows the initial state before the performance of No. 7.

First, as shown in FIG.
3a into the housing 2. At the same time as the disk 5 is inserted from the throwers 1 to 3a, it engages with the pin members 54 and 55f installed in the positioning members 61 and 62 shown in FIG. 6
Press 2 to the left or right to move forward. Left and right pin part U3
When the center of rotation of the de-f SF 5 crosses the line connecting the axial centers of 4f and 55[, release your hand because both pin parts u5'lf and 55f are biased toward the outer periphery of the disk. Even if the disk 5 is pulled into the housing 2.

At this point, the guide portion 91 effectively guides the disk 5, and the disk 5 is positioned at a predetermined position on the container 22. In addition, the disk 5 has a pin member 54f made of four pieces of wood.
, 55f, 57h, and 58h, the disk, once positioned, will not be displaced by external vibrations such as vehicle body vibrations.

As shown in FIG. 15 (a, mountain), at the same time as the disk 5 is positioned in the soil of 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, the arm 97 is rotated counterclockwise in FIG.
Figure 15 +b+ 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 swingably provided on the tray 10 is inserted into the cam groove formed in the moving member 14. 148, the C1 moving member 14 cannot move relative to the tray 10, and therefore the controller 22 is locked relative to the tray 10. By rotation of 20, the moving member 1
4.13, only the tray r10 and the container 22 are moved rearward. Note that the pin 26 is inserted into the cam groove 140.
While still engaged in the game! -Slide the upper right edge of the shifter.

Almost at the same time when the first antenna 10 and the second antenna 22 are moved backward by a predetermined distance and the disk 5 is housed in the housing 2, the right end of the arm 97 is moved as shown in FIG. 15(C). The protruding pin 97b comes into contact with the cut and raised portion 7 of the sillage. As the pin 97b comes into contact with the cut and raised portion 7, 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 further Along with this, the arm 97 is rotated counterclockwise in FIG. 15(C) by the cut and raised portion 7f, and the engagement state of the arm 97 with the disk 5 is released.

In this state J3, 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 disc 5 is released, the pin 26 leaves the cam groove 14e and connects the four parts 7C formed in the cam groove 17 to the cam groove 7, as shown in FIG.
Go inside. As a result, the tray 10 is locked with respect to the chassis 7, and hence the housing 2, and at the same time, the locked state of the movable member 14 with respect to the tray 10, 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 slides along the cam holes 13d and 14d provided in the moving member 13. Move downwards while holding it. Therefore, the disc 5 is placed on the turntable 45. At this time, the disk supporting surface of the container 22 is tilled from the disk 5,
The disk 5 becomes rotatable together with the turntable 45.

Further, by the rearward movement of only the movable members 13.14, the bottles 51a protruding from the support member 51 of the clamp mechanism are moved into the cam holes 13 (l) formed in the movable parts 013.14, respectively.
and 1411 and J shown in FIG. 18:
The suppressing member 52 approaches the disk 5 together with the supporting member 51, and the disk 5 is clamped. J5, the movement stroke in the vertical direction of the support member 51 is approximately 8.5+
Also, the movement stroke of the annular ring 22 in the vertical direction is approximately 6°5IIIll. ” Ntep 22
The movement stroke of the support member 51 is 2HzJs smaller than that of the support member 51, but this is due to the movement stroke of the support member 51.
This is a result of the fact that the cam holes 13 (1, 14d), which are protruding from the pins 22a/At, are movably engaged with each other, and the horizontal portion is located right in the middle of the cam holes.

When the movable member 14 reaches the rear limit position at the same time as the disk 5 is clamped, a part of the movable member engages with the detection switch 104 to operate the detection switch, as shown in FIG. Motor 20 is stopped. Performance is possible in this state. Note that the moving member 13
The lever 85 is rotated in conjunction with the rearward movement of the disk, and therefore the double insertion of the disk from the disk insertion slot 3a is prevented by the prevention member 86.

Of the 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.

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, i~ray 10, moving member 13.14, content booth 22
, the suppressing member 52 is returned to its rest position before playing by following a process completely opposite to the operation at the time of disc loading described above. Furthermore, the key 1r ridge 34 is also returned to its home position.

The disk 5 is then recovered.

Incidentally, if it is desired to re-play 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 at home in a dormitory.

(Effects in detail above) As mentioned above, in the auditioning disc play 17 according to the present invention, the slot-in type makes it easy to load the disc, and
Since the overall size is small, it is suitable for outdoor use.

In particular, in the A-loading disc play 17 according to the present invention, the disc transport mechanism (T-ray 1
0. The objective lens of the optical pickup means (consisting of a container 22, etc.) is set when the disc transport mechanism is in the disc transport front position and the optical pickup means 1" kittridge (34) is at the home position. (3
An opening (106, etc.) is formed opposite to 3a). By providing such an opening, it is possible to wipe off dust adhering to the surface of the objective lens (33a) through the opening without removing the disk transport mechanism. Moreover, the dustproof properties of the disc playing means are good.

[Brief Explanation of the Drawings] Figure 1 shows an on-vehicle A-Loading Day C according to the present invention.
2, 3, 4 and 5 are a plan view, a front view, a left side view and a right side view of the internal structure of the A-loading disc player, respectively. 6 is a perspective view of the main part of the internal structure, FIGS. 7 to 14 (ω. mountain), and (C) is a detailed view of a part of the internal structure,
. 1) to 18 are diagrams for explaining the operation of the A-loading disc play 17. Description of symbols of main parts 2...Housing 2a, 10d...Opening 2b...Lid 3...Front panel 3a... Slot 5...Disk 6
......Operation button group 6a...Play start switch 7...
・Chassis 7a...Main body 7b...Sub-chassis 7C...Recessed portion 71゛...Cut and raised portion 8...Vibration isolating member 10. ...1 ~ Ray 1
0a...Main body 10b...Side wall member'
IOc, 10e, 17c, 17d, 22a. 26.51a, 54a, 54e, 55a. 55e, 57a, 58a, 58f, 85a. 86a, 97a, 97b----pin 10f, IOQ
, 13a, 13b, 14a. 14b, 14f, 31b, 57f, 570° 58g, 8
5b... Long hole 12.105... Bracket 13.14... Moving member 13d, 13q, 14d, 14g... Cam hole 1
4C...Rack part 14e...Cam full 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 ... Combiner 23 ...Protective film 2
5.85...Lever 28.51...Support part 29...Vibration isolation members 30a, 30b...Guide shaft 31...
...Slider 31a, 3ic...Screw 31e...Protrusion 33...Case 33
a...Objective lens 33b...Notch 34...Ki 1? Ridge 35... Offset screw 35a... Threaded portion 35b... Circular head 37... Screw shaft 38... Motor 39... Pulley 41...
...Plate spring 42...Half spring 1 to 45...Turntable 46...Spindle motor 46a...Output shaft 46b...Bearing Part 47a... Holding mechanism 47b... Idler 52... Pressing part 52a... Magnetic screw 1 to 52b... M separate member 52c. ... Shuman Kawauchi 5
4.55...Holding plates 54b, 55b...Circular parts 54c, 55c...Claws 54f, 55f, 571+, 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... ...Taber section 93...Play start switch 94...
...Intermediate member 96...Support shaft 97...
・Arms 98.101, 103.104...Detection switch 99...Switch holding member 101a...Actuator Applicant: Pioneer Co., Ltd. Patent attorney: Motohiko Fujitoshi #15 times (1: o (b)

Claims (2)

[Claims] (1) A disc that transports the disc to a performance position, including a housing having a slot into which a disc to be played is inserted, a performance means provided within the housing, and a disc carrier that supports the disc at a predetermined position. the playing means includes a turntable and an optical pickup means including an objective lens for irradiating a spot light onto the recording surface of the disc, and is disposed below the disc transporting mechanism to move the turntable. a carriage that is movable in a direction substantially parallel to a rotational surface of the disc, and the disc transport mechanism has a carriage that faces the objective lens when the disc transport mechanism is in a pre-disk transport position and the carriage is in a home position. 1. An autoloading disc player characterized in that an opening is formed in which the disc is loaded. (2) Claims characterized in that an opening that faces the objective lens when the carriage is at the home position is formed in the housing, and a lid that can close the opening is provided. The autoloading disc player according to item 1.