JPH081726B2 - Disc player - Google Patents

Description

TECHNICAL FIELD The present invention relates to a disc player.

BACKGROUND ART A disc player for playing an information recording disc such as a digital audio disc has already been developed and has recently come into widespread use in ordinary households. However, since such a conventional disc player is designed on the assumption that it is installed indoors in a quiet place, it is not suitable for outdoor use. The conditions required for a disc player used outdoors include easy loading of the disc, small size as a whole, and good vibration resistance and dust resistance.

OBJECT OF THE INVENTION It is an object of the present invention to provide a disc player suitable for outdoor use and having particularly good vibration resistance.

"Structure of the Invention" The disc player according to the present invention has a housing,
A disk player comprising at least a playing means for playing a disk and a chassis carrying the playing means, wherein the playing means carries an optical pickup means and a positioning means for carrying and positioning the optical pickup means. And a disk rotating means having a turntable for carrying and rotating the disk, and a supporting member supporting the positioning means and the disk rotating means, wherein the positioning means carries the optical pickup means and A carriage movable along a recording surface of a disk carried on the turntable for a predetermined section, and a drive mechanism for driving the carriage, and a midpoint of a moving locus of a center of gravity of the carriage moving in the predetermined section. From the midpoint between the rotation axis of the turntable and the carriage movement direction. That on both sides of equidistant, it is characterized by having a damping member for coupling the said support member chassis.

Embodiment Hereinafter, an on-vehicle auto-loading disc 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 auto loading disc player.

As shown in FIG. 1, a front panel 3 forming a part of the housing 2 is provided with a slot 3a for inserting a disc 5 to be played, extending in the left-right direction. However, the left-right direction referred to here is toward the front indicated by the arrow Y. Therefore, the arrow X direction in the drawing indicates the left side, and the arrow Z direction is the upper side. In addition,
The disk 5 is of a type that records and reads a signal using laser light and has an outer diameter of about 12 cm.
The front panel 3 is also provided with an operation button group 6 for operating the disc player, for example, play start and eject.

As shown in FIGS. 2 to 6, the housing 2
A chassis 7 as a support member is provided inside. The chassis 7 is composed 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,
In FIG. 1, only the two left vibration isolator members 8 are shown. The chassis 7 is provided with a tray 10 movably in a direction parallel to a rotation surface of a turntable, which will be described later, in this case, a front-back direction (arrow Y direction and the opposite direction). As is particularly clear in FIG. 6, the tray 10 is L
It is composed of a main body 10a formed in a letter shape and a side wall member 10b screwed to the right end portion 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 in a long hole 12a formed by a pin 10c protruding from the left end extending in the front-rear direction on the bracket 12. It is supported by freely engaging.

On the other hand, a pair of moving members 13 are provided on both left and right sides of the chassis 7.
And 14 are arranged. The right moving member 14 is made of resin or the like, and is attached to the right end portion of the tray 7 slidably supported by a guide bar 15 fixed to the right end portion of the chassis 7 by extending in the tray moving direction, that is, the front-rear direction. It is installed. Specifically, the moving member 14 is supported by slidably engaging a long hole 14a formed in the moving member in the front-rear direction with a pin 10e protruding from the right end of the tray 10. Is there. The left moving member 13 is the tray.
A long hole 13a which is located between the bracket 10 and the moving member 12 and extends in the front-rear direction is slidably engaged with a pin 10c provided at the left end of the tray 10. It is supported by. The right end of the tray 10 is slidably engaged with and supported by the guide bar 15 at two support points separated in the tray moving direction, that is, the front-rear direction.
An interlocking shaft 17 having arms 17a and 17b fixed to both ends is provided at the rear end of the tray 10 so as to extend in the left-right direction, and is rotatably supported by the tray 10. arm
Pins 17c and 17d are projectingly provided on the inner surfaces of the tip end portions of 17a and 17b, and the pins are elongated holes 13b and 14b formed by vertically extending at the rear end portions of the moving members 13 and 14, respectively. Are slidably engaged with each other. A power transmission mechanism 19 composed of a plurality of gears rotatably supported is provided at the right end of the chassis 7. A motor 20 is fixedly installed in front of the power transmission mechanism 19, and as is particularly clear in FIG. 4, the worm 20a fitted to the output shaft of the motor meshes with the first stage gear 19a of the power transmission mechanism 19. are doing. The final stage gear 19b of the power transmission mechanism 19 is meshed with a rack portion 14d formed at the lower end of the left side surface of the moving member 14 in the moving direction of the moving member, that is, the front-rear direction. At the meshing position between the final stage gear 19b and the rack portion 14d, the tray 10 has a guide bar 15
It is near the midpoint of the above-mentioned two support points which are slidably engaged with and supported by.

The above-mentioned motor 20, power transmission mechanism 19, and arms 17a, 17
With the interlocking shaft 17 including b, etc., the moving members 13 and 1
A driving force applying means for applying a driving force to 4 is configured.

Below the tray 10, a container 22 carrying the disk 5 is arranged at a position sandwiched by the moving members 13 and 14. The container 22, the tray 10, and the moving members 13 and 14 form a disk carrying portion. A protective film 23 made of felt or the like is attached to the disk carrying surface of the container 22 in order to avoid direct contact between the disk carrying surface and the disk 5. A pair of four pins 22a are provided at the left and right ends of the container 22, one pair in total, extending in the left-right direction. Each of the pins 22a of the container 22 is slidably engaged with the four elongated holes 10f formed in the tray 10 by extending in the vertical direction, so that the tray 22 is in a direction perpendicular to the tray moving direction, that is, in the vertical direction. Is movably supported within a predetermined range. The pin 22a of the container 22 also
After passing through the elongated hole 10f, they are slidably engaged with cam holes 13d and 14d formed in the moving members 13 and 14, respectively. The cam holes 13d and 14d are formed in the disc insertion direction, that is, from the front toward the rear upward, that is, at the taper portion inclined in the direction in which the container 22 moves away from the turntable described later, and at the disc insertion direction end or rear end of the taper portion. It is composed of a horizontal portion that continuously extends rearward and a taper portion that continuously extends in parallel with the taper portion at the rear end of the horizontal portion. That is, the container 22 moves up and down as the moving members 13 and 14 move in the front-rear direction.

Then, until the tray 10 reaches a predetermined position on the turntable described later, that is, a position where the rotation center of the disk 5 carried by the container 22 substantially coincides with the rotation axis of the turntable, the container 22 is moved toward the tray 10. Locked and the tray 10 reaches the predetermined position, the container 22
The lock / release means for releasing the lock state with the tray 10 and locking the tray 10 with respect to the housing 2 will be described.

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 right moving member 14 is formed with a cam groove 14e so that the position in the tray moving direction coincides with the position of the recess 7c when the tray 10 is at the predetermined position on the turntable. A lever 25 is swingably provided at the rear end of the tray 10, and a recess 7c and a cam groove 14 are provided at the swing end of the lever.
A pin 26 that can engage with e is provided in a protruding manner. That is, the pin 26 selectively engages with the recess 7c and the cam groove 14e. The moving member 14 has a cam groove 14e.
A long hole 14f which is formed to continuously extend forward and is slidably engaged with the pin 26 to enable the movement of the moving member 14 after the tray 10 reaches the predetermined position on the turntable.
Are formed.

By the recess 7c, the cam groove 14e, the elongated hole 14f and the pin 26, the container 22 is locked to the tray 10 until the tray 10 reaches a predetermined position on the turntable, and when the tray 10 reaches the predetermined position. Unlock the container 22 from the tray 10 and lock the tray 10 into the housing 2
Locking / unlocking means for locking against is configured.

Further, the lock / release means, the chassis 7, and the tray
10, container 22, moving members 13 and 14, and power transmission mechanism 1
The drive force applying means including the motor 9 and the motor 20 constitutes a disk transfer mechanism for transferring the disk 5 inserted from the slot 3a of the housing 2 to the playing position, that is, the turntable.

Next, the playing means for playing a disc, which is provided in the housing 2, will be described.

As shown in FIG. 6, on the lower surface of the chassis 7 which is a part of the disc transport mechanism, a support member 28 formed in a generally square V shape as a whole is arranged, and is made of flexible rubber or the like. It is attached to the chassis 7 via the four anti-vibration members 29. Two guide shafts are provided on the support member 28 in parallel with the plane of rotation of the turntable, in this case extending in the front-rear direction, and acting as guide means.
30a and 30b are fixed. On the guide shafts 30a, 30b, sliders 31 formed in a substantially U shape are movably supported at both side portions in the moving direction, that is, both left and right end portions. As shown in FIGS. 9 and 10, the slider 31 has a screw 31 extending in the moving direction of the slider, that is, in the front-back direction.
a is provided, and a rectangular parallelepiped case 3 is formed by the screw.
3 is rotatably held. 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 disc 5 with a laser spot light and carries optical pickup means (other than the objective lens 33a, not shown) for reading information from the disc. ing. The slider 31 and the case 33 are collectively referred to as a carriage 34.

Here, for example, as shown in FIG. 2, the tray 10 forming a part of the disc transport mechanism has the disc transport mechanism at the disc transport pre-position (the state shown in FIG. 2) and the carriage 34. Has a circular opening 10d facing the objective lens 33a when it is in the home position, that is, in the rest position before playing. The opening 10d is provided to wipe dust and the like adhering to the surface of the objective lens 33a without removing the disc transport mechanism. Therefore, although not described in detail, the tray 10 is a member that constitutes a part of the disc transport mechanism, and is provided when the disc transport mechanism and the carriage 34 are in the above-described pre-performance position.
It goes without saying that an opening similar to the opening 10d is formed in the member interposed between the objective lens 33a and the objective lens 33a.
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 opening 10d, this opening 2a is also positioned so as 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 screwed to the housing 2. By providing the housing 2 with such an opening, 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 and the like.

Although it moves back and forth, as shown in FIGS. 9 and 10, an elongated hole 31b is formed at the end of the slider 31 in the moving direction in a plane perpendicular to the slider moving direction, in this case, extending in the left-right direction. ing. The long hole 31b is provided corresponding to one end of the rotation of the case 33, and the screw portion 35a is provided in the long hole 31b of the case 3.
The circular head portion 35b of the offset screw 35 that is screwed onto the 3 is fitted.
As the name implies, the axial center of the screw part 35a of the biasing screw 35 is circular head 3
It is deviated from the axis center of 5b. That is,
By rotating the biasing screw 35, the case 33 is rotated little by little around the support screw 31a.

The bias screw 35 and the elongated hole 31b into which the circular head portion 35b of the bias screw is fitted adjust the rotational angular position of the case 33, that is, an optical pickup means (not shown) provided in the case. The adjustment means for adjusting the so-called tangential direction (1) is configured. After the adjustment is completed, the screws 31c are fixed.

As shown in FIGS. 6 and 11, a screw shaft 37 arranged parallel to the guide shafts 30a and 30b is rotatably attached to both ends of the support member 28. A motor 38 is arranged in front of the screw shaft 37, and the screw shaft 37 is rotationally driven by the motor via a power transmission means including a pulley 39 and the like. As is especially clear in FIG. 11, a leaf spring 41 is fixed to the slider 31 in a cantilever shape, and a half nut 42 screwed to a screw shaft 37 is fixed to the free end of the leaf spring. It is set up.

The screw shaft 37, the motor 38, 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. Has been done.

A turntable 45 is arranged at a position on the extension line of the movement trajectory of the carriage 34 and sandwiched by the drive mechanism for driving the carriage, and a supporting member is provided.
It is fixed at 28. As is clear in FIG.
The turntable 45 is directly driven to rotate by a spindle motor 46 which is a drive source provided so as to support the turntable. As shown in FIGS. 6 and 9, the case 33, which is a part of the carriage 34, has a cutout 33b into which a part of the turntable 45 and the spindle motor 46 facing the case 33 can be fitted. Has been formed. When the carriage 34 is at the home position of the carriage, that is, at the rest position before playing, the turntable 45 and the spindle motor 46 are fitted in the notch 33b.

As shown in FIGS. 7 and 8, an idler 47b rotatably supported by a holding mechanism 47a is brought into contact with the output shaft 46a of the spindle motor 46. The holding mechanism 47a and the idler 47b constitute a contact means for bringing the output shaft 46a and the bearing portion 46b supporting the output shaft 46a into close contact with each other. Normally about 10μ between the output shaft 46a and the bearing 46b
Although a cap of about m is produced, this gap is corrected by providing the above-mentioned close contact means, and the output shaft 46a,
Therefore, the rotation of the turntable 45 becomes accurate and smooth.

Support member 28 described above, guide shafts 30a, 30b,
With the carriage 34, the drive mechanism including the motor 38 (driving the carriage 34), the turntable 45, the spindle motor 46, the contact means including the idler 47b, and the peripheral small members related thereto, the disk is formed. A playing means for playing is configured.

Here, a method of 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 members 29 are arranged, are centered on the midpoint between the movement locus of the center of gravity of the carriage 34 and the rotation axis of the turntable 45. They are equidistant on the arc. The anti-vibration member 29 is provided to protect the playing means from external vibrations such as car body vibrations of a vehicle equipped with the on-vehicle auto loading disc player, and the support points of the support member 28 are as described above. The antivibration effect is remarkably improved by disposing the antivibration member 29 at the supporting point. The supporting point of the supporting member 28 is set as described above in consideration of the change of the center of gravity of the playing means due to the movement of the carriage 34. Even if the support points of the support member 28 are provided at equal distances on an arc centered on the center of gravity of the playing means at the midpoint and the vibration isolation member 29 is provided at the support point, a great vibration isolation effect is obtained. can get.

Next, a clamp mechanism for clamping the disk 5 conveyed on the play position, that is, the turntable 45 will be described.

As shown in FIGS. 2, 3, and 6, a plate-shaped support member 51 is provided above the container 22 and at a position sandwiched by the moving members 13 and 14. A pair of four pins 51a are provided at left and right ends of the support member 51, one pair in total, extending in the left-right direction. The support member 51 is for each of these pins.
The tray 10 is slidably engaged with the four elongated holes 10g formed in the tray 10 by extending in the vertical direction.
Further, it is movably supported within a predetermined range in a direction perpendicular to the tray moving direction, that is, in the vertical direction. The pin 51a of the support member 51 is also inserted into the elongated hole 10g of the tray 10 and the cam holes 13g and 14 formed in the moving members 13 and 14, respectively.
It is slidably engaged with g. Cam holes 13g and 14
g is linearly inclined upward in the direction in which the support member 51 is separated from the turntable 45, that is, from the front to the rear. That is, 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. Of the cam holes 13d, 13g and 14d and 14g formed in the moving members 13 and 14, the cam holes 13d and 14d that engage with the pin 22a of the container 22 are referred to as the first cam holes, and are supported by this. The cam holes 13g and 14g that engage with the pin 51a of the member 51 are referred to as second cam holes. The total length of the first cam holes 13d and 14d in the disc insertion direction is substantially equal to the total length of the second cam holes 13g and 14g in the disc insertion direction.

A pressing member 52 that cooperates with the turntable 45 to perform a disc clamping action is rotatably provided on the support portion 51. 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 contacts the surface of the disk mounted on the turntable 45 is referred to as a clamp position. The support member 51 moves between the clamped position and the unclamped position.
Similarly, as shown in FIG. 3, the pressing member 52 has an annular magnet 52a, and the magnetic force of the magnet forms a disc clamp. The pressing member 52 and the supporting member 51 for rotatably supporting the pressing member 52 are made of a magnetic material such as a steel plate. When the supporting member 51 is in the unclamped position, the pressing member 52 is supported by the magnetic force of the magnet 52a.
It is designed to be adsorbed on. Further, as shown in FIG. 6, a cushioning member 52b made of felt or the like is adhered to the upper surface of the pressing member 52, and the vibration of the supporting member 51 when the supporting member 51 is in the unclamped position or the like. This prevents the upper surface of the pressing member 52 and the housing 2 from directly contacting each other. However, the buffer member 52 is not limited to the upper surface of the pressing member 52, and may be provided in a part of the housing 2 facing the pressing member 52 when the support member 51 is in the non-clamping position.

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 so as to sandwich the pressing member 52, and three pin 54a and 55a are provided in the left-right direction. In the figure, it is movably attached to the support member 51. Arc-shaped portions 54b and 55b to be inserted into a circumferential groove 52c (shown in FIG. 3) formed on the outer periphery of the pressing member 52 are formed at the facing portions of the sandwiching plates 54 and 55, and the arc-shaped portions are formed. Two claws 54c, 5 that can engage with the bottom surface of the circumferential groove 52c of the pressing member 52.
5c is projected.

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

Positioning members 61 and 62 described above, and coil spring
64 and 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 the peripheral small members associated therewith constitute a clamping mechanism for clamping the playing position, that is, the disc 5 conveyed on the turntable 45. ing.

The positioning means including the above-mentioned positioning members 61, 62 not only positions the pressing member 52 on the support member 51, but also positions the disc 5 inserted from the slot 3a of the housing 2 at a predetermined position on the container 22. It also acts as a positioning means. As is clear from FIGS. 2 and 6, the positioning members 61 and 62 are arranged on both sides of the disc insertion path, and the container 22 (constituting the tray 10 and the moving members 13 and 14 constitutes a disc carrying portion).
It is movable in a plane substantially parallel to the disc carrying surface. Pin members 54 are provided on the lower surfaces of the holding plates 54, 55 and the synchronizing plates 57, 58, which are constituent members of the positioning members 61, 62.
f, 55f, 57h, and 58h are respectively projected. These pin members 54f, 55f, 57h and 58h extend substantially perpendicularly to the disk carrying surface of the container 22 and act as engaging portions that engage with the outer circumference of the disk 5. The coil spring 64 biases the positioning members 61, 62 in a direction in which the respective pin members 54f, 55f, 57h and 58h approach the outer circumference of the disc.

Here, as shown in FIG. 6, each pin member 54f, 55
The f, 57h, and 58h are formed with tapers whose diameter decreases toward the disk carrying surface of the container 22. However, the pin member 57
Not shown for h. The disc 5 is held by the pin members at the time of disc loading or ejecting. At the same time as the disc 5 is held by the pin members, the disc 5 is held by the taper action of the pin members. It is pressed toward the disk carrying surface of.

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

As shown in FIGS. 2 and 6, a small bracket formed in an L shape at the upper end of the right moving member 14.
71 is fixedly provided, and a pin member 72 is projectingly provided on the small bracket. The pin member 72 extends in the vertical direction, and the tray 10 moves at a predetermined position on the turntable 45, that is, the container 22 that moves together with the tray.
The center of rotation of the disk 5 carried on the turntable 45 is
Is arranged so as to engage with the front end portion of the claw 73 screwed to the tip of the arm portion 58e of the synchronizing plate 58, which is a constituent member of the positioning means, when it reaches a position substantially coincident with the rotation axis of . That is, the positioning members 61, 62 are operated in accordance with the movement of the moving member 14 after the tray 10 reaches the predetermined position, and the pin member 5 provided on the positioning members 61, 62.
The engagement state between the 4f, 55f, 57h and 58h and the outer circumference of the disc, that is, the state of holding the disc is released.

As is apparent from FIG. 6, the pin member 72 provided on the moving member 14 is formed with a taper whose diameter decreases in the direction in which the container 22 approaches the turntable 45, that is, in the downward direction. The positioning means (comprising positioning members 61, 62, etc.) for positioning the disk 5 at a predetermined position on the container 22 slides while coming into contact with the pin member 72 and in a direction substantially perpendicular to the tray moving direction together with the container 22. Although the pin member 72 is reciprocated, the pin member 72 is tapered as described above, so that the pin member comes into point contact with the positioning means. Therefore, the resistance due to the mutual contact becomes extremely small, and the disc loading and ejecting operations become smooth. Further, the positioning means receives thrust by the component force generated by the action of the taper of the pin member 72.

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

As shown in FIG. 13, a flexible material such as rubber is formed in a plate shape inside the disk insertion slot 3a formed in the front panel 3 which constitutes the front surface of the housing, and is made short with each other. A pair of flexible longitudinal members 76 and 77 are provided so that one ends in the hand direction are opposed to each other and close the slot 3a on the main surface. Each flexible longitudinal member 76,77
Is attached to the front panel 3 by a pair of fixing members 78 and 79 having an L-shaped cross section at the other end in the short side direction, that is, at the non-opposing side end. These flexible longitudinal members 76,7
The 7 and the fixing members 78, 79 constitute a closing means for closing the slot 3a.

The opposite ends of the flexible longitudinal members 76 and 77 are chamfered in an arc shape, and the flexible longitudinal members and the disk 5 are provided.
The sliding contact with the is smooth. Flexible portions 76a and 77a, which are thin and particularly easy to bend, are provided near the opposite ends of the flexible longitudinal members 76 and 77, respectively.

By the way, the flexible longitudinal members 76 and 77 have conductivity, and are grounded, for example, via the fixing members 78 and 79, respectively. By doing so, static electricity can be removed from the disk 5 inserted from the slot 3a, and dust that has adhered to the surface of the disk 5 due to static electricity can be prevented from entering the housing 2.
When the material of the flexible longitudinal members 76, 77 is, for example, rubber, it is effective to mix carbon particles or the like as a method for providing conductivity to the rubber.

As shown in FIGS. 2, 5, and 6, a lever 85 extending substantially in the front-rear direction is arranged on the right side of the bracket 12 fixed to the left end portion of the chassis 7, and the pin 85a
Is rotatably attached to the bracket 12 at a substantially central portion in the longitudinal direction. The lever 85 is adapted to rotate in conjunction with the moving member 13. On the other hand, a preventive member 86 is provided in front of the lever 85 so as to be movable in the vertical direction (the arrow Z direction and the opposite direction). A pin 86a is projectingly provided on the left end portion of the prevention member 86, and the pin is slidably engaged with a long hole 85b formed at the front end portion of the lever 85. The lever 85 and the prevention member 86 constitute a disc double insertion preventing means for preventing double insertion of the disc from the slot 3a. That is, when the prevention member 86 moves up and down in accordance with the rotation of the lever 85, the prevention portion 86b provided on the prevention member crosses the slot 3a and prevents the disc from being inserted from the slot 3a. -ing

By the way, the lever 85 is adapted to be interlocked with the movement of the moving member 13 which is a component member of the above-mentioned disc transport mechanism. By using it as the power for driving the disk, a special drive mechanism for driving the disk double insertion preventing means is unnecessary. Therefore, the player can be downsized and the cost can be easily reduced.

As shown in FIG. 2, FIG. 6, FIG. 14 (a) and FIG. 14 (c), the disk 5 inserted from the slot 3a is inserted into the container 22 at the deep part of the housing 2 and on the disk insertion path.
A guide member 91 that acts as a guide means for guiding to a predetermined upper position is arranged so as to face the disk carrying surface of the container 22, and is fixed to the lower surface of the tray 10, for example. The guide member 91 is formed by bending a steel plate, for example.
Tapered part 91 inclined to approach the disk carrying surface of 22
a is formed.

As shown in FIG. 2, FIG. 6 and FIG. 14 (a), at the rear end of the tray 10, the disc 5 inserted from the slot 3a and positioned at the predetermined position on the container 22 is inserted. Play start switch 93 so that it is engaged with the outer circumference of the disc when it is slightly pushed in the direction
Is provided. However, this play start switch
Reference numeral 93 denotes an outer periphery of the disc through an intermediate member 94 (also shown in FIG. 14B) provided in front of the play start switch so as to be movable in the front-rear direction and to which a forward biasing force is applied. Engage with.

As shown in FIG. 2, a support shaft 96 extending vertically is fixed to the lower surface of the right end portion of the main body 10a of the tray 10. An arm 97 formed in a substantially V shape is rotatably attached to the support shaft 96 at a substantially central portion thereof.
Pins 97a, 97b are respectively provided on the lower surfaces of both ends of the arm 97 so that the left end pin 97a can engage with the outer periphery of the disk 5 positioned on the container 22. A switch holding member 99 that holds the detection switch 98 so that it can engage with the left end of the arm 97 is swingably attached to the support shaft 96. The switch holding member 99 is given a biasing force in the clockwise direction 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 support shaft 96, the arm 97, the detection switch 98, the switch holding member 99 and the peripheral small members related thereto constitute a mechanical detection means for detecting that the disk 5 is positioned on the container 22. . When the tray 10 is moved backward from the position shown in FIG. 2 by a predetermined amount and reaches a predetermined position, a pin 97b protruding from the right end of the arm 97 is provided near the rear end of the chassis 7. The cut and raised portion 7f is brought into contact with the cut and raised portion 7f.

As shown in FIGS. 6 and 11, on the right side of the carriage 34, there is provided a detection switch 101 for detecting that the carriage has returned to the home position, that is, the rest position before the start of playing. . The detection switch 101 is fixed to a support member 28 that supports the carriage 34 and the like, and a special signal 31e protruding from a slider 31 that is a constituent member of the carriage 34 is engaged with an actuator 101a of the detection switch to detect a detection signal. It is designed to emit.

As shown in FIG. 4, a detection switch 103 for detecting that the tray 10 has reached the forward movement limit position by engaging with a part of the tray 10 is fixed to the right end portion of the chassis 7. .

Further, as shown in FIG. 6, at the right end portion of the chassis 7 and behind the detection switch 103, the moving member is brought to the backward movement limit position by engaging with a part of the moving member 14. Detection switch 104 for detecting that the disc loading and clamping have been completed.
Is fixed. However, the detection switch 104 is attached to the chassis 7 via the bracket 105.

The signals emitted from the operation button group 6, the play start switch 93, and the detection switches 98101, 103, and 104 described above are transmitted to a control unit (not shown) arranged at a predetermined position in the housing 2. The motors 20 and 38 and the spindle motor 46 operate at the timings described later by the operation signals sent from the control unit in response to these signals.

Next, the operation of the vehicle-mounted auto-loading disc player having the above-mentioned configuration will be briefly described according to the playing procedure. 1 to 5 show the initial state before the performance of the disc player.

First, slot the disk 5 as shown in FIG.
Insert from 3a into the housing 2. The disc 5 is inserted from the slot 3a, and at the same time, for example, pin members 54f and 55f provided on the positioning members 61 and 62 shown in FIG.
And pushes both positioning members 61 and 62 to the left and right to proceed. When the center of rotation of the disk 5 crosses the line connecting the axial centers of the left and right pin members 54f and 55f, both pin members 54f and 55f
The disc 5 is pulled into the housing 2 even if the hand is released, because f is urged to approach the outer periphery of the disc. At this time, the guide member 91 effectively guides the disc 5, and the disc 5 is positioned at a predetermined position on the container 22. The disk 5 has four pin members 54.
Since the disk is positioned by being sandwiched by f, 55f, 57h and 58h, the disk once positioned will not be displaced by external vibration such as vehicle vibration.

As shown in FIGS. 15 (a) and 15 (b), the disk 5
Is positioned on the container 22, and at the same time, the outer periphery of the disk 5 is engaged with the left end pin 97a of the arm 97,
The arm is rotated counterclockwise in FIG. 15 (a), for example. Therefore, the left end of the arm 97 engages with the detection switch 98 to operate the detection switch (state of FIG. 15 (b)). 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 tray 10
Since the pin 26 projecting from the swing end of the lever 25 that is swingably provided on the engaging member engages with the cam groove 14e formed on the moving member 14, the moving member 14 moves to the tray 10. It cannot move relative to it, and therefore the container 22 is locked to the tray 10. Therefore, by the rotation of the motor 20,
Only the moving members 14 and 13, the tray 10 and the container 22 are moved rearward. The pin 26 slides on the right end of the chassis 7 while engaging with the cam groove 14e.

When the tray 10 and the container 22 are moved backward by a predetermined amount and the disc 5 is housed in the housing 2, at the same time,
As shown in FIG. 15C, a pin 97b protruding from the right end of the arm 97 comes into contact with the cut-and-raised portion 7f of the chassis 7. In this way, the pin 97b comes into contact with the cut-and-raised portion 7f, whereby 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 transported further 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 is substantially coincident with the rotation axis of the turntable 45.

At the same time when the engagement state between the arm 97 and the disc 5 is released, as shown in FIG. 16, the pin 26 moves into the cam groove 14e.
Is removed to enter the recess 7c formed in the chassis 7. This locks the tray 10 with respect to the chassis 7, and thus the housing 2, and at the same time the tray 10 of the moving member 14 is moved.
The locked state of the container 22 and thus the locked state of the container 22 with respect to the tray 10 is released. Thus, the rearward movement of only the moving members 14 and 13 is continued to reach the state of FIG. That is, the pin 22a protruding from the container 22
By sliding along the cam holes 13d and 14d provided in the moving members 13 and 14, respectively, the container 22 moves downward while carrying the disk 5 as shown in FIG. Therefore, the disc 5 is placed on the turntable 45. At this time, the disk carrying surface of the container 22 separates from the disk 5, and the disk 5 can rotate together with the turntable 45. Further, by the rearward movement of only the moving members 13 and 14, the pin 51a protruding from the supporting member 51 of the clamp mechanism slides along the cam holes 13g and 14g formed in the moving members 13 and 14, respectively. As shown in FIG. 18, the pressing member 52 approaches the disk 5 together with the support member 51, and the disk 5 is clamped. 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 moving stroke of the container 22 is 2 m longer than the moving stroke of the support member 51.
Although it is smaller, this is also because the cam holes 13d, 14d with which the pin 22a projecting from the container 22 slidably engages have a horizontal portion in the middle of the cam hole. It is the result of being taken.

When the moving member 14 reaches the rear limit position at the same time when the disk 5 is clamped, a part of the moving member engages with the detection switch 104 to operate the detection switch, as shown in FIG. The motor 20 is stopped. It becomes possible to play in this state. The lever 85 is rotated in conjunction with the rearward movement of the moving member 13, and thus the prevention member
86 prevents double insertion of the disc from the disc insertion slot 3a.

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

When the carriage 34 reaches the movement limit position after the performance is finished, the carriage 34 and the turntable 45 are stopped, and at the same time, the motor 20 starts the reversing operation. Therefore, the tray 10, the moving members 13 and 14, the container 22, and the pressing member 52 can be returned to the rest position before the performance by following a process completely opposite to the operation at the time of loading the disc. Further, the carriage 34 can also be returned to the home position.

 Thus, the disk 5 is recovered.

When it is desired to replay the disc 5 that has once finished playing, the play start switch 93 is operated by slightly pushing the disc 5 in the disc insertion direction to replay.

Although the auto loading disc player is shown as being mounted on a vehicle, it goes without saying that it can be used indoors for home use.

Effects As described above in detail, in the disc player according to the present invention, the support member and the chassis are not simply connected via the vibration isolating member, but the center of gravity of the carriage is moved between the midpoint of the locus and the rotation table of the turntable. The vibration isolating members are provided at positions equidistant from both sides in the moving direction of the carriage from the middle point to couple the support member and the chassis. Therefore, it is possible to minimize the change in the load exerted on the anti-vibration member, so that the desired anti-vibration effect can be effectively exhibited.
The playing means consisting of the support member and its mounted parts is hardly affected by external vibration such as vibration of the vehicle body, so that smooth playing can be performed, and failure or damage of the disk playing means due to the vibration can be prevented. is there. That is,
The vibration resistance of the disk playing means is good.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an entire vehicle-mounted auto loading disc player according to the present invention, FIG. 2, FIG.
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 auto-loading disc player, and FIG. 6 is a perspective view of a main part of the internal structure, and FIGS. 14 (a), (b) and (c) are partial detailed views of the internal structure, and FIGS. 15 (a), (b) and (c) to 18 show the operation of the auto loading disc player. It is a figure for explaining. Explanation of symbols of main parts 2 …… Housing 2a, 10d …… Opening 2b …… Lid 3 …… Front panel 3a …… Slot, 5 …… Disc 6 …… Operation button group 6a …… Play start switch 7… … Chassis, 7a …… Main body 7b …… Subchassis 7c …… Recess 7f …… Cut-and-raise part 8 …… Vibration isolator, 10 …… Tray 10a …… Main body, 10b …… Sidewall member 10c, 10e, 17c, 17d , 22a, 26,51a, 54a, 54e, 55a, 55e, 57a, 58
a, 58f, 85a, 86a, 97a, 97b …… Pin 10f, 10g, 13a, 13b, 14a, 14b, 14f, 31b, 57f, 57g, 58g, 85b…
… Long hole 12,105 …… Bracket 13,14 …… Movement member 13d, 13g, 14d, 14g …… Cam hole 14c …… Rack part, 14 …… Cam groove 15 …… Guide bar 17 …… Interlocking shaft 17a, 17b… … Arm 19 …… Power transmission mechanism 19a …… First stage gear 19b …… Final stage gear 20 …… Motor, 20a …… Warm 22 …… Container, 23 …… Protective film 25,85 …… Lever 28,51 …… Support Member 29 …… Anti-vibration member 30a, 30b …… Guide shaft 31 …… Slider 31a, 31c …… Screw 31e …… Protrusion, 33 …… Case 33a …… Objective lens, 33b …… Notch 34 …… Carriage, 35 …… Bias screw 35a …… Screw part, 35b …… Circular head 37 …… Screw shaft 38 …… Motor, 39 …… Pulley 41 …… Plate spring 42 …… Half nut 45 …… Turntable 46 …… Spindle motor 46a …… output shaft, 46b …… bearing part 47a …… holding mechanism, 47b …… idler 52 …… pressing member 52a …… magnet 52b… … Cushioning member, 52c …… Circular groove 54,55 …… Clamping plate 54b, 55b …… Arc section 54c, 55c …… Claw 54f, 55f, 57h, 58h, 72 …… Pin member 57c, 57d, 57e, 58c , 58d, 58e …… Arm part 57,58 …… Synchronizing plate 61 …… First positioning member 62 …… Second positioning member 64 …… Coil spring 71 …… Small bracket 76,77 …… Flexible longitudinal member 76a , 77a …… Flexible part 78,79 …… Fixing member 86 …… Prevention member, 86b …… Prevention part 91 …… Guide member 91a …… Tapered part 93 …… Play start switch 94 …… Intermediate member, 96 …… Support shaft 97 …… Arm 98,101,103,104 …… Detection switch 99 …… Switch holding member 101a …… Actuator

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Okamoto 25-1 Nishimachi Yamada, Kawagoe City, Saitama Prefecture Pioneer Co., Ltd. Kawagoe Plant (72) Inventor Kouji Shimoda 4-2610 Hanazono, Tokorozawa City, Saitama Pioneer Tokorozawa Plant (72) Inventor Toshiyuki Kimoto 426-10 Hanazono, Tokorozawa-shi, Saitama Pioneer Co., Ltd. Tokorozawa Plant (72) Inventor Asano Takano 4-2610 Hanazono, Tokorozawa, Saitama Pioneer Co., Ltd. Tokorozawa Factory (56) References Open 59-5090 (JP, U) Open 56-167006 (JP, U) Open 57-803 (JP, U)

Claims (1)

[Claims] 1. A disc player comprising a playing means for playing at least a disc and a chassis carrying the playing means in a housing, wherein the playing means is an optical pickup means and the optical pickup means. And positioning means for carrying and positioning, a disk rotating means having a turntable for carrying and rotating the disk, and a supporting member supporting the positioning means and the disk rotating means, the positioning means, A carriage carrying the optical pickup means and movable along a recording surface of a disk carried on the turntable for a predetermined section, and a drive mechanism for driving the carriage, the carriage moving in the predetermined section. From the midpoint between the center of movement of the center of gravity and the rotation axis of the turntable On either side of the equidistant positions in the moving direction of the serial carriage, disk player and having a damping member for coupling the said support member chassis.