JPH02216660A - Disk player on vehicle - Google Patents

Abstract

PURPOSE:To place a disk in the center of a disk insertion hole to prevent relative collision between the disk and a centering pin by arranging a centering mechanism which places the disk in the center of the disk insertion hole by the centering pin. CONSTITUTION:A centering mechanism 12 to place a disk 106 in the center of a disk insertion hole 2 is arranged in the vicinity of the disk insertion hole on the inside of a frame. Centering pins 18 and 19 of the centering mechanism 12 are arranged on the outside of the oscillation range of a disk 106 fixed on a turntable 29 supported in the floating state. Thus, a disk 106 is easily placed in the center of the disk insertion hole 2 without deflecting by centering pins 18 and 19. A fear of relative collision between the disk 106 and centering pins 18 and 19 during reproducing of music recorded on the disk 106 is dissipated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a disc player with a centering mechanism that positions the disc at the center of the disc insertion slot when the disc is inserted into the disc insertion slot of a vehicle-mounted disc player. The present invention relates to an in-vehicle disc player.

[Conventional technology]

In recent years, disc-shaped compact discs (hereinafter simply referred to as discs) have been developed in which analog sound is converted into digital signals and bits corresponding to the digital signals are formed in the recording layer. This disc optically reproduces analog sound using a laser beam irradiated from a read head of a CD player. Furthermore, since this disc provided dramatically superior sound quality and operability compared to conventional LP records, it rapidly became popular along with CD players. Therefore, CD players especially for use in vehicles have been developed, and examples of such CD players for use in vehicles include the one shown in FIG. 11. In the same figure, the reference numeral 101 indicates a diameter of 12 mm.
It is a disk shaped like a cm in size, and music is recorded on it. When this disc 101 is inserted into the disc insertion slot 102, the loading mechanism 103 moves it to a predetermined position (C
At this predetermined position, the turntable 105 is moved by the clamper arm 104.
fixed on top. Disc 1 on turntable 105
01 is rotated by a spindle motor (not shown) and plays music recorded on the disc 101 by a read head (not shown). In the vehicle-mounted CD player, the clamper arm 104, turntable 105, reading head, etc. are supported in a floating manner to withstand vibrations during driving.

Incidentally, recently, a disk 106 with a diameter of 8 (up to), which is much smaller than the disk 101 with a diameter of 12 cm, has been developed.

[Problem to be solved by the invention]

In such conventional in-vehicle CD players, not only is it difficult to insert the disc into the center of the insertion slot 102 while the vehicle is running, but also a centering mechanism is required. When attempting to insert the disc into the disc insertion slot 102, the opening of the disc insertion slot 102 is wide, making it difficult to insert the disc into the center. Therefore, if the disc 106 is inserted not in the center of the disc insertion slot 102 but offset, it will not be possible to position it at a predetermined position on the turntable.

Therefore, it is conceivable to provide a centering mechanism near the disk insertion slot 102 that allows the disk to be positioned at the center of the disk insertion slot 102 even if the disc is inserted unevenly. That is, this is a method in which the centering pin of the centering mechanism restricts the uneven insertion of the disk and positions it at the center of the disk insertion slot 102. However, if the centering pin is arranged near the disk insertion slot 102 in this way, the disk 101, which has a particularly large diameter of 12clI+, can be placed on the turntable 102.
When placed on the disk 101, there is a risk that the centering pin and the disk 101 will collide with each other due to vibrations while the vehicle is running.

In view of the above, the present invention provides that even if the in-vehicle disc player vibrates violently while the vehicle is running, the discs 101, 10
6 can be easily inserted into the center of the disk insertion slot 102, and even if a large diameter disk 1 from a country of 12
It is an object of the present invention to provide a disc player in which a disc and a centering pin of a centering mechanism do not relatively collide even when using a disc player.

[Means to solve the problem]

Therefore, in the present invention, a disc is inserted through the disc insertion slot, and when the disc reaches a predetermined position in the player, the clamper arm is operated to fix the disc on the turntable, and the turntable is rotated to play back the recording. In the in-vehicle disc player in which the reproduction device such as the clamper arm and the turntable is supported in a floating manner, a centering mechanism for positioning the disc by a centering pin is disposed in the center of the disc insertion slot, and the centering mechanism The centering pin is arranged outside the vibration range of a disk fixed on a floating turntable.

[Effect]

Since the in-vehicle disc player is installed on the front panel of the vehicle, the in-vehicle disc player also vibrates while the vehicle is running. Therefore, especially when inserting a small-diameter disk into the center of the disk insertion slot, the operator must pay sufficient attention, which is cumbersome. However, since a centering mechanism is provided near the disc insertion slot, the centering pin allows the disc to be easily positioned at the center of the disc insertion slot without being biased.

Furthermore, since the support frame that supports the playback device is buffered by the fixed frame and is in a floating state, there is a risk that the disc placed on the turntable will collide with the centering pin of the centering mechanism. This risk is particularly high for large diameter discs. However, since this centering pin is located outside the vibration range of the disc, there is no risk that the disc will collide with the centering pin while playing music recorded on the disc.

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1 to 10 are diagrams showing an embodiment of a vehicle-mounted CD player according to the present invention.

First, the configuration will be explained.

In FIG. 1, reference numeral 1 indicates an in-vehicle CD to which the present invention is applied.
This is a casing for a player, and the front surface of this casing 1 is provided with a disc insertion slot 2 for inserting a disc. A frame 3 is housed within the casing 1, and the frame 3 has a substantially flat top plate 3a and side plates 3b, 3b whose sides are bent downward. Furthermore, a support frame 4 as shown in FIG. 2 is disposed inside the frame 3, and a playback device (not shown) for playing back music recorded on the disc is mounted on this support frame 4. It is installed in Nakao. The support frame 4 is floatingly supported by the frame 3 via dampers 5, 5, . . . 5 in a cushioning manner.

Also, on the front side of the frame 3, there is a loading machine f116 for transporting the disc 11 inserted into the disc insertion slot 2 to a predetermined position (approximately the center position of the support frame 4).
A loading arm lowering mechanism 7 is provided via a loading arm 8.

The loading mechanism 6 has a drive roller 9a attached to the support frame 4. The loading mechanism 6, the loading arm lowering mechanism 7, and the locking mechanism 45, which will be described later, are described in the previously filed Utility Model Application No. 1986-1.
It is described in detail in No. 36632. Further, a loading motor 10 is provided on the front side of the frame 3, and when a drive roller 9a is rotated by the drive of the loading motor 10, it cooperates with a driven roller 9b disposed opposite to this drive roller 9a to rotate the disc. The disk 106 inserted into the insertion slot 2 is transported to a predetermined position.

Also, on the inner side of the frame 3 and near the disc insertion slot 2, a centering mechanism 1 is provided for positioning the disc 106 at the center of the disc insertion slot 2, as shown in FIG.
2 are arranged. Centering machine TL! 112 is a pair of centering arms 13, 14 as shown in FIG.
and a centering lever 15 located between the centering arms 13 and 14. The pair of centering arms 13, 14 have an oval shape as a whole, and the centering arms 13, 14 are pivotally supported on the frame 3 via support pins 16, 17 provided at the center thereof. In addition, centering arms 13, 14
The distal end of each disc insertion slot 2 side extends sufficiently to the vicinity of the disc insertion slot 2, and a centering pin 18, 19 is attached to this distal end. For this reason, the centering pins 18 and 19 are arranged at positions sufficiently separated from the center position of the support frame 4. Furthermore, a connecting pin 20.21 is attached to the inner end of the frame 3 of the centering arm 13.14.

The centering lever 15 has an inverted W-shape as a whole, and connecting grooves 22 and 23 are formed at both ends of the centering lever 15. By fitting the connecting pins 20 and 21 into the connecting grooves 22 and 23, a pair of connecting pins 20 and 21 are connected. The centering arms 13, 14 and the left and right ends of the centering lever 15 are connected. Further, a long hole 25 is formed in the center of the centering lever 15 along the disk insertion direction, and the long hole 25 has a circular head 25a on the disk insertion opening 2 side, as shown in FIG. An id pin 26, which is implanted in the frame 3, is loosely inserted into the elongated hole 25, and this guide pin 26 is relatively movable within the elongated hole 25. The centering lever 15
A guide groove 125 is provided at the center end of the player, and a guide bin 126 fixed to the frame top plate 3a is engaged with this guide groove 125.

Further, a tension spring 27.2 is provided between the pair of centering arms 1B, 14 and the protrusions 3b, 3b of the frame 3.
8 is tensioned, and this tension spring 27.28
The pair of centering pins 18, 19
are brought closer to each other.

Here, if the small-diameter disk 106 is not inserted into the center of the disk insertion slot 2 but is inserted unevenly, this disk will come into contact with one of the pair of centering pins 18 and 19. Assuming that the disk 106 abuts against the centering pin 18 as shown in FIG.
It rotates slightly counterclockwise against the urging force of 7. This rotation of the centering arm 13 causes the centering lever 15 as a whole to rotate slightly in the clockwise direction. When the centering lever 15 rotates in the clockwise direction in this way, the guide pin 26 is slightly deviated from the center of the circular head 25a of the elongated hole 25, as shown in FIG. Contact with the wall. Then, the guide bin 26 cannot move relatively within the elongated hole 25, that is, the centering lever 15 cannot move toward the disk insertion slot 2 side.

Therefore, although the centering arm 13 rotates a little by the disk 106, it does not rotate any further. Therefore, the disc 106 that has been inserted unevenly is regulated by the centering pin 18 and positioned at the center of the disc insertion slot 2.

Next, when the disk 101 is positioned at the center of the disk insertion slot 2, the disk 101 simultaneously contacts the pair of centering pins 18 and 19.

Then, the pair of centering arms [3.degree. At this time, the position of the guide pin 26 does not shift with respect to the width direction of the elongated hole 25, so the guide pin 26
becomes relatively movable within the elongated hole 25, and the centering lever 15 moves toward the disk insertion slot 2 side. When the centering lever 15 moves, the centering arm 13
．． 14 can be further rotated, and the disc 101 can be inserted into this in-vehicle CD player.

On the other hand, as shown in FIG. 2, a turntable 29 on which the disk 106 is placed is provided approximately at the center of the support frame 4, and this turntable 29 is connected to a spindle motor 30 provided on the lower surface side of the support frame 4. rotated by A small disk-shaped clamper 31 is located above the turntable 29, and this clamper 31 is attached to a clamper arm 3 that is swingably attached to the rear of the support frame 4.
It is provided at the triangular tip of 2. Clamper arm 3
A tension spring 33 is stretched between the clamper arm 2 and the support frame 4, and this tension spring 33 biases the clamper arm 32 toward the turntable 29.

5 and 6 are also provided on the lower surface of the clamper arm 32.
As shown in the figure, an actuation auxiliary plate 34 is attached, and this actuation auxiliary plate 34 operates the detection bin 41 when a small 8 cm diameter disk 106 is conveyed and positioned on the turntable 29. turntable 2
9. The actuation auxiliary plate 34 is swingably attached at pivot points 130, 130 on both sides of the front end of the clamper arm 32, and is biased downward by a leaf spring 140. On the lower surface side of the actuation auxiliary plate 34, in the center thereof, there is formed a generally arcuate disc recess 35 that fits a disc with a diameter of 8 marks. For this reason,
When the small-diameter disk 106 is conveyed toward a predetermined position, the disk 106 enters the disk recess 35. A hole 36 is formed at the rear end of the disc recess 35, and the center portion of the pressing auxiliary mechanism 37 provided on the upper surface side of the actuation auxiliary plate 34 faces the hole 36. The tip of the disk 106 guided by the disk 35 passes through the hole 36 and comes into contact with the press assist mechanism 37,
This will work.

Here, when the disk 101 with a diameter of 12 cm is conveyed onto the turntable 29, since the disk 101 has a large diameter, the disk recess 35 of the actuation auxiliary plate 34
The object is conveyed as it is by climbing over it without entering it, and after its peripheral edge directly contacts the detection bin 41 without activating the suppression assisting mechanism 37, it is placed on the turntable 29.

Also, when the disk 101 with a diameter of 12 cm is placed on the turntable 29, the centering pins 18, 1
Since the centering pins 1g and 19 are arranged at a sufficient distance from the center of the turntable 29, the centering pins 1g and 19
is sufficiently far away from the mounted disk. Therefore, the diameter placed on the turntable 29 is 1
Even if the 2cm disk 101 vibrates in the front, back, left and right directions,
The centering pins 18, 19 are arranged outside this vibration range, and there is no possibility of a relative collision between the centering pins 18, 19 and the disk.

The suppression auxiliary mechanism 37 has a pair of swing arms 38 and 39, and base end portions of the pair of swing arms 38 and 39 are pivotally mounted on the operation auxiliary plate 34. A tension spring 40 is stretched between the pair of swinging arms 38 and 39, and the tip portion 38a,
39a are engaged in a mutually gripping manner as shown in FIG. Therefore, the small diameter disk 106 is inserted through the hole 36.
When the tips 38a, 39a are pushed by the tips of the swing arms 38, 39, the pair of swing arms 38, 39 open like doors and swing, respectively. A protruding piece 38b is integrally formed on the swinging arm 38, and a detection pin 41 is disposed at a position opposite to this protruding piece 38b.As the swinging arm 38 swings, this protruding piece 38b presses the detection pin 41. do.

As shown in FIG. 8, the detection pin 41 is attached to one end of a first link 42 that is pivotally installed on the rear end side of the frame 3, and the other end of the first link 42 is slidable in the disk insertion direction. It is connected to a second link 43 provided therein. When the detection pin 41 is pressed via the swing arm 38 in the case of a small-diameter disk 106 or directly by the periphery of the disk in the case of a large-diameter disk 101, the second link 43 is slid and the loading arm mechanism 7 is pressed. The locked state is released and the clamper arm 32 can be lowered.

On the other hand, as shown in FIGS. 1 and 2, the support frame 4
A lock bin 44 is installed at the side end of the frame 3 and projects laterally. A lock mechanism 45 is provided on the frame 3 from which the lock bin 44 protrudes, and the lock bin 44 is locked by the lock mechanism 45 until the inserted disk is transported to a predetermined position, and the support frame 4 is fixed to the frame 3. . Loading arm actuation mechanism 7
When the loading arm 8 is moved downward by the operation of Ru.

In addition, a movable lid 4 is provided on the frame 3 near the disc insertion slot 2.
6 is attached so that it can be opened and closed freely, and when this in-vehicle CD player is in use, a movable cover 46 moves to the disc insertion slot 2 to prevent accidentally inserting another disc into the disc insertion slot 2. ing.

Next, the effect will be explained.

The centering mechanism 12 of the present invention is particularly suitable for a small diameter disk 1.
Since it is effective when using 06, the small diameter disk 1
This will be explained using 06 as an example.

When a small-diameter disk 106 is inserted into the disk insertion slot 2, a sensor 47 (FIG. 1) provided at the front of the top plate 3a is activated.
detects insertion of the disk 106 and drives the loading motor 10. Here, when the small-diameter disk 106 is inserted, if it is inserted not in the center of the disk insertion slot 2 but off-centered, it will come into contact with one of the pair of centering pins 18 and 19 of the centering mechanism 12 . When the disk 106 comes into contact with either of the pair of centering pins 18, 19, the centering mechanism 12 positions the disk 106 at the center of the disk insertion slot 2, as described above.

Next, the driving roller 9a is rotated by the driving of the loading motor 10, and the inserted disk 106 is conveyed toward the turntable 29 in cooperation with the driven roller 9b. When the disc 106 is conveyed to the vicinity of the center of the turntable 29, the disc 106 has a diameter of 8 cm.
m, it enters into the disc recess 35 of the actuation auxiliary plate 34.

When the disk 106 enters the disk recess 35, the tip of the disk 106 is inserted into the hole 36 as shown in FIG.
The detection bottle 41 is
Press. That is, as described above, the disk 106
swings the swinging arm 38, and its protruding piece 38b presses the detection pin 41.

When the detection bottle 41 is pressed, the first
The link 42 swings about the pin 142, slides the second link 43, and operates the loading arm mechanism 7, and the clamper arm 32 shown in FIG. When the pin 150 descends, the disc 10 is lowered by the biasing force of the tension spring and placed on the turntable 29.
6 is suppressed and fixed by the clamper 31.

While the disk 106 is fixed by the clamper 31, the lock mechanism 45 releases the locked state of the lock pin 44 in conjunction with the operation of the loading arm mechanism 7.
The support frame 4 is supported by the frame 3 via the damper 5 in a cushioning manner, and is in a floating state. In this way, the preparation for the playback operation is completed, and the spindle motor 30 is driven to drive the disc 106 through the turntable 29.
Rotate. When the disc 106 is rotated, a reading head (not shown) emits laser light, and the reading head moves in the radial direction of the disc 106, thereby reproducing the music recorded on the disc 106.

Insert the small diameter disc 106 into the disc insertion slot 2 while the vehicle is running.
It is difficult to insert the vehicle so that it is positioned in the center of the vehicle, and the user must pay careful attention to the vehicle, which may impede safety while driving. However, since the centering mechanism 12 is provided near the disk insertion slot 2, the centering pins 18 and 19
can be easily guided to the center of the disc insertion slot 2 without being biased. Therefore, the disc 106 inserted into the disc insertion slot 2 is conveyed onto the turntable 29, placed and fixed on the turntable 29, and a laser beam is irradiated from the reading head to read the music recorded on the disc 106. can be played.

On the other hand, when the in-vehicle CD player also vibrates, the support frame 4 is buffer-supported by the frame 3 via the damper 5 and is in a floating state, so most of the vibration is absorbed by the damper 5 and does not reach the support frame 4. Not much is communicated. However, since the support frame 4 is buffer-supported by the frame 3 and is in a floating state, the support frame 4 vibrates back and forth, left and right, and up and down relative to the frame 3, as shown in FIG. It turns out.

Therefore, in the case of a small-diameter disk 106, the mounting positions of the centering pins 18 and 19 are not restricted, but in the case of a disk 101 with a diameter of 12 cm fixed to the turntable 29, when the support frame 4 vibrates, the centering pins 18 and 19 are attached.
There is a possibility that the peripheral edge of 01 may collide with the centering pins 18 and 19.

However, these centering pins 18 and 19 have a diameter of 12
Since the disc 101 is placed outside the vibration range in the longitudinal direction of the disc 101, the disc 101 is placed outside the vibration range of the centering pin 18.1 while playing music recorded on the disc 101.
There is no risk of collision with 9. Therefore, while the music recorded on the disc 101 is being played back, the centering pins 18 and 19 do not interfere with the playback of the music.

〔Effect of the invention〕

As explained above, according to the present invention, since the centering mechanism is provided in which the disc is positioned in the center of the disc insertion slot using the centering pin, even if the disc is inserted unevenly into the disc insertion slot, the centering pin will prevent the disc from being inserted. and located in the center of the disc insertion slot. Therefore, the disc is securely placed and fixed on the turntable, and music can be played back by the reading head 1.

In addition, since the centering pin of this centering mechanism is placed outside the vibration range of the disk fixed on the turntable, even if the disk fixed on the turntable vibrates relative to the centering pin, the disk There is no risk of relative collision with the centering pin. Therefore, the centering pin does not interfere with music playback.

2...Disc insertion slot, 12...Centering mechanism, 18.19...Centering pin, 29...Turntable, 32...
- Clamper arm, 101.106...Disc (compact disc).

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a CD player according to the present invention, FIG. 2 is a perspective view of a support frame provided with a centering mechanism,
Fig. 3 is a plan view of the centering mechanism, Fig. 4 is an enlarged view of part A in Fig. 3, Fig. 5 is a perspective view of the actuation auxiliary plate and the suppression auxiliary mechanism, and Fig. 6 is the actuation auxiliary plate and the suppression auxiliary mechanism. , FIG. 7 is an enlarged view of part B in FIG. 5, FIG. 8 is a plan view showing the first and second links, and FIG. 9 is a perspective view showing the vibration of the support frame relative to the fixed frame. figure,
FIG. 10 is a diagram showing the vibration range when the disks vibrate relative to each other, and FIG. 11 is a perspective view of a conventional vehicle-mounted CD player. Applicant's representative Yasuo Ishikawa 9th/771 Brown

Claims (1)

[Claims] A disc is inserted through the disc insertion slot, and when the disc reaches a predetermined position in the player, the clamper arm is operated to fix the disc on the turntable, and the turntable is rotated to reproduce the recorded information. In an in-vehicle disc player in which playback devices such as a clamper arm and a turntable are supported in a floating manner,
A centering mechanism is provided in the center of the disk insertion slot to position the disk using a centering pin, and the centering pin of the centering mechanism is placed outside the vibration range of the disk fixed on a floating turntable. An in-vehicle disc player.