JP3431422B2 - In-vehicle disk player - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an on-vehicle disc player, and more particularly to a mechanism for supporting two disc insertion preventing claws for preventing a disc from being erroneously inserted into a playing section. And a support and drive mechanism for the disk feed roller. 2. Description of the Related Art An example of a conventional in-vehicle disk player will be described with reference to FIGS. 4 and 5. FIG. FIG. 4A is a plan view showing a conventional on-vehicle disk player with some members seen through,
FIG. 4B is a view in the direction of arrow A in FIG. 4A.
FIG. 5 is a side view showing a portion of the in-vehicle disk player. The playing section chassis 1 shown in FIG. 1 supports a disk playing section, and is supported by the main body chassis 2 via four dampers 8, 8,... And a tension coil spring. The playing section chassis 1 has a turntable 4a.
A disk motor 4 for rotating and driving the disk is fixed. An optical pickup 3 is movably supported by the playing section chassis 1.
The disk is fed in the radial direction of the disk by the pickup feed motor 5 and the transmission mechanism supported by the disk drive. The playing section chassis 1 further supports a disk feed roller 9, a disk feed motor 6, and a gear transmission mechanism for transmitting rotation of the disk feed roller 9 to the disk feed roller 9. Arm 1 rotatably supported by playing section chassis 1
0a, 10a and arms 10b, 10b make the playing section chassis 1 float or fixed to the main body chassis 2. That is, a lever 11 slidably supported by the playing section chassis 1 and driven by a disk feed motor 6 via a drive mechanism (not shown) rotates left and right arms 10a and 10a in directions opposite to each other. And let it go into and out of the slit provided in the main body chassis 2. Arm 10b,
10b is also rotated by the same member as the lever 11. FIG.
(B) shows a state in which the arm 10b has entered the slit of the main body chassis 2. A clamper arm 12 and a roller arm 13 shown in FIG. 5 are rotatably supported by a shaft 1a erected on the playing section chassis 1, and are respectively rotated clockwise and clockwise by tension coil springs 30 suspended between them. Energized counterclockwise. The clamper arm 12 is driven by a shaft 12a erected on the clamper arm 12 being slidably supported by the playing section chassis 1 and pushed by a lever 11a driven by a disk feed motor 6 via a drive mechanism (not shown). The roller arm 13 is driven by a shaft 13 a erected on the roller arm 13 being pushed by the clamper arm 12. The roller arm 13 is provided with a claw 13b for preventing two disks from being inserted. A printed board 7 connected to the optical pickup 3, the disk motor 4, the pickup feed motor 5, and the disk feed motor 6 is fixed to the playing section chassis 1. In the above configuration, when the disc is not loaded in the apparatus, the arms 10a and 10a and the arms 10b and 10b are inserted into the slits of the main body chassis 2, and the playing section chassis 1 is fixed to the main body chassis. I have. Also, clamper arm 12 is rotated counterclockwise in FIG. 5, the roller arm 13 is rotated counterclockwise. In this state, the two-disk insertion preventing claw 13b is lowered, and the disk feed roller 9 is raised. When the disk is inserted from the disk insertion opening through the space above the two-disk insertion prevention claw 13b, the disk feeding roller 9 Presses the disk between the disk and a guide (not shown). When detecting means (not shown) detects that the disk has been inserted, the disk feed motor 6 rotates in the loading direction, and the disk feed roller 9 feeds the disk onto the turntable 4a.
Then, clamper arm 12 is rotated in the clockwise direction, further, the roller arm 13 is rotated it clockwise. Then, the clamper supported by the tip of the clamper arm 12 presses the disc against the turntable, and the disc is clamped. Further, the disk feed roller 9 is separated from the disk, and the two disk insertion preventing claws 13b close the disk insertion opening. Optical pickup 3 during loading operation
Is stopped at the disk inner peripheral position, but after the loading operation is completed, the disk feed motor 6 is further rotated in the loading direction so that the disk is fed in the disk outer peripheral direction, and the disk is reproduced. When the disc is ejected, the reverse operation is performed by rotating the disc feed motor 6 in the direction opposite to the loading direction. In the above-mentioned conventional on-vehicle disk player, since all the driving sources for loading and reproducing a disk are mounted on the playing section chassis 1, the driving source is constituted by one printed circuit board. This has the advantage that the wiring of the two disks can be performed.
Since the playing portion 3b is supported by the playing section chassis 1, there is a problem that the two disc insertion preventing claws 13b float during the performance, and the disc insertion slot is not completely closed. For this reason, when the disc is loaded in the apparatus, there is a risk that the disc may be further inserted through the insertion slot, and the disc may be damaged or may not be ejected. SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to mount all the driving sources for loading and reproducing a disc on a playing section chassis 1 and to further dispose the disc. An object of the present invention is to provide an in-vehicle disc player in which an insertion slot is reliably closed. In a vehicle-mounted disc player according to the present invention, a playing section chassis is fixed to a main body chassis during non-playing, and a playing section chassis is supported by the main body chassis via an elastic member during playing. In an in-vehicle disc player, all the power sources required for disc loading and disc playback are mounted on the playing section chassis, the disc feed roller is rotatably supported, and an arm having two disc insertion preventing claws is pivoted to the main body chassis. freely supported, provided a shaft having a fitting portion to be driven shaft end in the rotation axis direction rotation is transmitted to the power source to the playing unit chassis is engageable with the fitting portion, the fitting Joint
The rotation is transmitted from the shaft via the shaft, and a rotating member for transmitting the rotation to the feed roller is rotatably provided on the main body chassis. In the above configuration, since the drive unit for loading the disc is provided in the playing unit chassis, the wiring of the drive source can be performed on one printed circuit board. Since the arm having the two disc insertion preventing claws is supported by the main body chassis, the disc insertion opening is securely closed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An on-vehicle disk player according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an on-vehicle disk player according to an embodiment of the present invention with some members seen through. The playing section chassis 1 shown in FIG. 1 supports a disk playing section, and is supported by the main body chassis 2 via four dampers 8. The playing section chassis 1 includes a turntable 4a.
A disk motor 4 for rotating and driving the disk is fixed. An optical pickup 3 is movably supported by the playing section chassis 1.
The disc is fed in the radial direction of the disc by a disc feed motor 15 supported on the disc. The disk feed motor 15 further drives the disk feed roller 9 to rotate. The disk feed roller 9 is rotatably supported by a roller arm 13 rotatably supported by the main body chassis 2. The playing section chassis 1 is set in a floating state or a fixed state with respect to the main body chassis 2 by a lock mechanism and a disk feed motor 15 similar to the conventional example shown in FIG.
FIG. 1 does not show this locking mechanism. The worm 15a fixed to the rotating shaft of the disk feed motor 15 meshes with the helical gear of the second gear 16, and the large gear of the second gear 16 is the second gear. It meshes with 17 small gears. The small gear of the two-stage gear 17 is a two-stage gear 1
The small gear of the second gear 18 meshes with the large gear of the second gear 19. The large gear of the second gear 19 meshes with the helical gear 20 and the helical gear 20 is a worm 21.
Is engaged with. The large gear of the two-stage gear 17 also meshes with a worm 14a for rotating the lead screw 14. The worm 14a rotates the lead screw 14 via a clutch mechanism (not shown). The optical pickup 3 is screwed with a lead screw 14 and is fed by the lead screw 14 in the disk radial direction. The worm 21 is rotatably and axially supported on the playing section chassis 1 by a shaft 22 (FIG. 2).
The key groove 22b (shown in detail in FIG. 2) transmits the rotation to the shaft 22. The axial movement of the worm 21 is restricted by a stopper (not shown). The gear transmission mechanism driven by the disk feed motor 15 is supported by the playing section chassis 1. A gear 23 disposed at a position facing the shaft 22 is rotatably supported by the main body chassis 2. The gear 23 transmits the rotation to the disk feed roller 9 also shown in FIG. A gear 9 a is fixed to the disk feed roller 9, and the gear 9 a is OO by the main body chassis 2 in FIG.
Roller arm 13 rotatably supported around an axis
It is supported rotatably. The roller arm 13 is provided with pawls 13b, 13b for preventing insertion of two discs, and is rotated by a disc feed motor 15 as in the conventional example shown in FIG. Gears 24 and 25 rotatably supported by main body chassis 1 transmit the rotation of gear 23 to gear 9a. In addition,
There is a clamper arm similar to the conventional example which is rotated by the disk feed motor 15, but is not shown in FIG. Next, the axial driving mechanism of the shaft 22 will be described. The slider 26 is attached to the playing section chassis 1 as shown in FIG.
The arm 27 is supported by the playing section chassis 1 so as to be rotatable in the E and F directions in FIG. Arm 2
7 is engaged with the cam groove 26a of the slider 26, and one end of the arm 27 is connected to the circumferential groove 2 of the shaft 22.
2c (shown in FIG. 2). The rack 26b of the slider 26 can mesh with the small gear of the second gear 19, and when the slider 26 is at the end position of the movement in the D direction, the engagement of the rack 26b with the small gear of the second gear 19 is released. When the shaft 28a of the arm 28 rotatably supported by the playing section chassis 1 is pushed by the disc fed to the loading position and the arm 28 rotates clockwise in FIG. Is pushed by the shaft 28b of the arm 28 and moves to a position where the rack 26b and the small gear of the two-stage gear 19 mesh. Rack 26b
When the slider 26 is driven by meshing with the small gear of the two-stage gear 19, the slider 26 sends the shaft 22 via the arm 27 in the direction A or B in FIG. Since the shaft 22 is rotated by the worm 21 as described above, one point on the outer surface of the shaft 22 moves along the spiral AB shown in FIG. When the fitting portion 22a of the shaft 22 fits with the cross groove 23a of the gear 23 by such movement, the rotation of the shaft 22 is transmitted to the gear 23. The shaft 22 is made of an easily deformable member such as a synthetic resin. Even when the fitting portion 22a does not match the cross groove 23a, the shaft 22 rotates while deforming, and the fitting portion 22a enters the cross groove 23a. I will get into it. Although not shown, a printed circuit board connected to the optical pickup 3, the disk motor 4, and the disk feed motor 15 is fixed to the playing section chassis 1. In the above configuration, the playing section chassis 1 is fixed to the main body chassis when the disc is not loaded in the apparatus. Further, the clamper has been rotated to a position away from the turntable 4a. In addition, the shaft 22 and the gear 23 are fitted with the fitting portion 22a and the cross groove 23a.
Are connected by Then, the roller arm 13 rotates counterclockwise as viewed from the lower right of FIG. In this state, the two-disk insertion preventing claw 13b is lowered, and the disk feed roller 9 is raised. When the disk is inserted from the insertion opening through the space above the two-disk insertion prevention claw 13b, the disk feeding roller 9 is rotated. Is pressed between the guide and a guide (not shown). When detecting means (not shown) detects that a disk has been inserted, the disk feed motor 15 rotates in the loading direction, and the disk feed roller 9 feeds the disk onto the turntable 4a. Next, the clamper arm is turned in the disk clamping direction, and the roller arm 13 is turned clockwise in FIG. Then, the clamper supported by the tip of the clamper arm presses the disc against the turntable to clamp the disc. The disk feed roller 9 is separated from the disk, and the two disk insertion preventing claws 13b provided on the roller arm 13 block the disk insertion opening. When the disk is fed up onto the turntable 4a, the arm 28 rotates clockwise in FIG. 1, and the slider 26 is pushed in the direction C. And
When the rack 26b and the small gear of the second gear 19 come into mesh with each other, the slider 26 moves in the direction C, and the arm 27 rotates in the direction E. The arm 27 sends the shaft 22 in the direction A, and retracts the shaft 22 to a position where the shaft 22 does not contact the gear 23 even when the playing section chassis 1 and the main body chassis 2 move relatively. At this time, the playing section chassis 1 is supported by the main body chassis 2 in a floating state. However, since the roller arm 13 is supported by the main body chassis 2, the two disk insertion preventing claws 13b surely cover the disk insertion opening. During the loading operation, the optical pickup 3 is stopped at the inner peripheral position of the disk, but after the loading operation is completed, the rotation of the worm 14a is stopped by the lead screw 1.
4, the disk is fed in the outer peripheral direction by the rotation of the disk feed motor 6 in the loading direction, and the disk is reproduced. When the disc is ejected, the reverse operation is performed by rotating the disc feed motor 15 in the direction opposite to the loading direction. According to the in-vehicle disk player of the present invention, since the power source is provided in the reproducing unit chassis, the power source can be wired by one printed circuit board mounted on the reproducing unit chassis. Moreover, since the arm provided with the two disk insertion preventing claws is supported by the main body chassis, there is no gap in the disk insertion opening, and the insertion of two disks is reliably prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an in-vehicle disk player according to an embodiment of the present invention, with some members seen through. FIG. 2 is a perspective view showing a portion of the on-vehicle disk player. FIG. 3 is a perspective view showing another portion of the in-vehicle disk player. 4 (a) is a plan view showing a conventional on-vehicle disc player with some members seen through, and FIG. 4 (b) is a view showing FIG.
It is an arrow A view in (a). FIG. 5 is a side view showing a portion of the in-vehicle disk player. DESCRIPTION OF SYMBOLS 1 Performance part chassis 2 Main body chassis 3 Optical pickup 4 Disk motor, 4a Turntable 5 Pickup feed motor 6 Disk feed motor 7 Printed circuit board 8 Damper 9 Disk feed roller, 9a Gears 10a, 10b Arm 11 Lever 12 Clamper Arm 13 Roller arm, 13a shaft, 13b Disc 2
Sheet insertion prevention claw 14 Lead screw, 14a worm 15 disk feed motor, 15a worm 16, 17, 18, 19 two-stage gear 20 helical gear 21 worm 22 shaft, 22a fitting portion, 22b keyway, 2
2c circumferential groove 23 gear, 23a cross groove 24, 25 gear 26 slider, 26a cam groove, 26b rack 27 arm 28 arm 30 tension coil spring

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Yasushi Kuroda 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Inside Kenwood Co., Ltd. (56) References JP-A-7-320361 (JP, A) Shokai Sho63- 191447 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 17/04 313 G11B 17/02

Claims (1)

(57) [Claim 1] An in-vehicle disk player in which a playing section chassis is fixed to a main body chassis during non-playing and a playing section chassis is supported by the main body chassis via an elastic member during playing. All the power sources required for disc loading and disc reproduction are mounted on the playing section chassis, the disc feed roller is rotatably supported, and the arm having two disc insertion preventing claws is rotatably supported on the main body chassis. A shaft, to which the rotation of the source is transmitted and which can be driven in the direction of the rotation axis and has a fitting portion at the shaft end, is provided on the playing portion chassis, and the fitting portion can be fitted with the fitting portion.
A vehicle-mounted disc player, wherein a rotation member for transmitting rotation from the shaft via the shaft and transmitting the rotation to the feed roller is rotatably provided on the main body chassis.