JP2524711Y2 - Disc player - Google Patents

Description

[Detailed description of the invention] "Industrial application field" In the invention, for example, music or video is converted into a digital signal and recorded, and the recorded disk is supported by a turntable, and is picked up on both sides or one side of the disk by a pickup. The present invention relates to a disc player for recording information and reproducing information.

2. Description of the Related Art Conventionally, there has been a technique in which a disk is horizontally supported by a turntable, a pickup is moved to upper and lower surfaces of the disk, and information on upper and lower surfaces of the disk is read.

"Problems to be solved by the invention" In the prior art, since the chuck plate is mounted on a chassis different from the deck chassis on which the turntable and the pickup are provided, a mounting position error between the turntable and the chuck plate tends to occur. There was a problem that it occurred unevenly and could not be easily corrected.

"Means for solving the problem" However, the present invention includes a deck chassis for movably mounting the pickup on the upper and lower surfaces of the disk,
A chuck plate for supporting a disk on a turntable is mounted on a chuck arm, and the chuck arm is rotatably supported on both side surfaces of the deck chassis.

[Operation] Therefore, since the chuck arm is positioned in the left-right direction by the side surface of the deck chassis, the chuck plate on the chuck arm side can be easily mounted at an appropriate position with respect to the turntable on the deck chassis side, and the mounting error of the chuck plate is reduced. Thus, the chucking operation of the chuck plate can be easily reduced, and the safety and reliability of the chucking operation of the chuck plate can be easily improved.

"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a tray mounting portion, and FIG. 2 is a plan view of the entirety. The upper and lower deck chassis (2) are provided with a square box-shaped case (1) and integrally connected in a side view U-shape. 3) is fixed inside the case (1), and a turntable motor (4) is fixed to the lower deck chassis (3).
A turntable (6) is fixed to the upper end of the output shaft (5) of the motor (4).

Also, a video disc (7) with a diameter of 30 cm, a diameter of 20
Disc loading surface (11) (12) for placing a small-diameter video disc (8), a compact disc with a diameter of 12 cm (9), and a compact disc with a small diameter of 8 cm (10)
(13) A tray (15) formed with (14) is provided,
Tray (1) via left and right slide rails (16) (16)
5) is attached to the case (1) so that it can enter and exit freely.
When the tray (15) enters the inside of the case (1), the tray (15) is lowered, and the discs (7) to (10) are placed on the turntable (6) and supported by the chuck arm (17). Lower the chuck plate (18)
The discs (7) to (10) are fixed to the turntable (6) by the chuck plate (18), and the turntable (6)
And the disks (7) to (10) are integrally rotated.

Further, as shown in FIGS. 3 and 4, a pickup table (21) for mounting a razor pickup (19) and a traveling motor (20), and disks (7) (8) supported on a turntable (6). Pickup on both upper and lower sides (1
Up and down pickup guide body (22) (2)
3), and the front end side of each guide body (22) (23) is attached to the deck chassis (2) (3) by a tilt adjustment fulcrum shaft (24) (25) so as to be vertically swingable, and an upper pickup guide is provided. So that the rear end of the body (22) has the maximum downward warp angle of tilt adjustment (about 2 degrees below the horizontal line)
The spring (27) is tilted downward by its own weight to the position of the stopper (26), and the rear end of the lower pickup guide (23) has a maximum upward warpage angle of tilt adjustment (approximately 1 degree upward with respect to the horizontal line). ) To raise and incline to the position of the stopper (28). The upper and lower pickup guides (22) and (23) are attached to the upper and lower surfaces of the disks (7) and (8) to be supported on the turntable (6) so that the tilt can be adjusted. I have.

A pickup rail (29) (30) slidably fitted and inserted into the pickup table (21) and a rack gear (33) that elastically meshes an output gear (31) of the traveling motor (20) with a spring (32). ) And (34) are fixed at symmetrical positions of the upper and lower pickup guides (22) and (23), respectively, and the pickup table (2) opposite to the output gear (31) is fixed.
1) A guide roller (35) is supported on the side, and the roller (3
5) Guide grooves (36) and (37) for rolling
2) (23) Formed on one side, the pickup rails (29) (30), rack gears (33) (34), and guide grooves (36) (37) are extended substantially parallel in the front-rear direction. The pickup rails (29) (30) are arranged between the rack gears (33) (34) and the guide grooves (36) (37).

As shown in FIG. 5, a pressure roller (39) is attached via a leaf spring (38) to the side of a pickup table (21) on which the guide roller (35) is provided. The pressure roller (39) is pressed into contact with the guide groove (36) on the side with the bent side, and the guide roller (3) is inserted into the guide groove (36) on the same side as the surface on which the pickup rail (29) is provided.
5) that slides and supports the pickup rail (2
9) By pressing the guide roller (35) on the same surface as the mounting surface, the accuracy of the support position of the pickup (19) is improved, and the mounting parts of the pickup rail (29) are the same as the lower pickup rail (30). It is structured so that it can be used.

Further, as shown in FIGS. 6 to 8, a turn carriage (40) for moving the pickup table (21) is provided between the upper and lower pickup guides (22) and (23), and the rear surface of the deck chassis (2) (3). The turn carriage (40) is attached via a center pin (42) to a back plate (41) that is fixed to the back plate (41). 43) The center pin (42) is slidably and rotatably engaged with the center pin (42), and the turn carriage (40) is moved up and down and rotated between the upper and lower surfaces of the disks (7) and (8) supported on the turntable (6). It is configured as follows.

Further, like the pickup rails (29) and (30), there are front and rear spherical guides (45) and (46) which are slidably fitted in bearing holes (44) of the pickup stand (21). When the pickup table (21) is moved in and out, each spherical guide body (45) (46) is positioned so that each spherical guide body (45) (46) is positioned substantially in a row on the extension of the pickup rail (29) (30). ) Is fixed to the turn carriage (40), and the front spherical guide body (45) that faces the frustoconical heads (29a) (30a) of the pickup rails (29) and (30) is formed in a rugby ball shape. The rear rear spherical guide body (46) is formed in a truncated cone shape, and the pickup stand (21) is connected to the turn carriage (40) via the rack gears (33) (34) of the pickup guide bodies (22) (23).
And the spherical guides (45) and (46) are fitted into the bearing holes (44) of the pickup stand (21), while the output gear (31) is rotated in the reverse direction to allow the rack gears (33) and (3) to rotate.
The pickup stand (21) is configured to retreat from the turn carriage (40) to the pickup guide bodies (22) (23) via 4).

Also, a pin (48) to be engaged with the engagement notch (47) of the turn carriage (40) is fixed to the pickup stand (21), and the spherical guide is formed by the engagement of the notch (47) and the pin (48). Pick-up stand (2) centered on body (45) (46)
In addition to preventing the rotation of 1), the pickup table (2
1) A lock body (50) is provided for engaging and disengaging the fixed notch (49) on the bottom side. The lock body (50) is slidably attached to the turn carriage (40), and the turn carriage (40) The vertical taper surface (51) of the back plate (41) at the lifting end of
When the lock body (50) comes in contact with the (52), the spring (53)
Move the lock body (50) to the unlock position against
The pick-up table (21) is moved in and out of the turn carriage (40). At other times, the lock body (50) is engaged and held in the notch (49) by a spring (53) to move the pick-up table (21) in and out. It is configured to prevent operation.

Further, as shown in FIGS. 9 and 10, a drive gear (54) for raising and lowering and rotating the turn carriage (40) is provided, and the gear (54) is connected to the center pin (42).
And a turn carriage motor (55) is fixedly mounted on the back plate (41), and the belt (56), the large-diameter pulley (57), and the reduction gears (58) (59) (60) are attached. The output pulley (61) of the motor (55) is interlocked with the drive gear (54) via the motor, and the drive gear (54) is driven forward and reverse by the motor (55).

A spring (6) for loosely supporting the center pin (42) on the back plate (41) and slidingly supporting the turn carriage (40) and the drive gear (54) on the back plate (41).
2), the turn pin (42) and the spring (62) are used to resiliently support the turn carriage (40) on the back plate (41). When the pickup table (21) is moved in and out of the turn carriage (40). Even if the spherical guide body (45) is at a high position with respect to the pick-up rail (30) as shown in FIG. 9, the turn carriage (40) is formed by the fitting force between the guide body (45) and the bearing hole (44). Is displaced downward against the spring (62), and even if the spherical guide body (45) is at a lower position than the pickup rail (30), contrary to FIG. The pickup carriage (21) is configured to be displaced in an upward posture against the spring (62) and to enter the turn carriage (40).

A moving pin (65) fixed to the turn carriage (21) is slidably engaged with the cam groove (63) and the drive groove (64). The pin (65) moves in (64), and the pin (65) moves up and down and rotates by the guide of the cam groove (63), and moves up and down the turn carriage (40) with reference to the center pin (42). And rotated.

Then, as shown in FIGS. 10 and 11 (a), the cam groove (6
3) Drive groove (64) at lower end of lower elevating guide (63b)
When the moving pin (65) is located at the end of one of the elevating parts (64b), the lock body (50) comes into contact with the tapered surface (52) and is in the unlocked position against the spring (53). The pickup table (21) is supported and is movable between the lower pickup guide body (23) and the turn carriage (40).

Turn carriage (40) in the state of Fig. 11 (a)
When the pickup table (21) is received, the motor detects the pickup table (21) and activates the motor (55) to rotate the drive gear (54) in the counterclockwise (arrow) direction. The pin (65) moves inside and the center pin (42)
And long hole (43), moving pin (65) and lifting guide (63
By the relative movement of b), the turn carriage (40) is raised, and the lock (50) is engaged with the pickup table (21) by the spring (53), and the lock (50), the pin (48), and the spherical guide The pickup stand (21) is fixedly supported on the turn carriage (40) by the bodies (45) and (46).

Then, as shown in FIG. 11 (b), when the drive gear (54) is rotated by about 180 degrees, the pin (65) is moved from the elevation guide (63b) to the rotation guide (63a), and Groove (6
The pin (65) is held by the rotating part (64a) of 4), and the pin (65) moves in the rotating guide part (63a) as shown in FIG. Then, turn the turn carriage (40) in the upward posture counterclockwise.

Also, as shown in Fig. 11 (d), the drive gear (54)
When rotated 360 degrees, the turn carriage (40) rotates downward by about 180 degrees and is supported downward.
The pin (65) of a) moves down to the upper lift guide (63c),
Move the pin (65) of the rotating part (65) to the lifting part (64c) on the other side.

Then, as shown in FIG. 11 (e), by rotating the drive gear (54) by about 270 degrees, the pin (65) moves in the elevating part (64c), and the center pin (42) and the long hole (43) are moved. ), And the relative movement between the moving pin (65) and the lifting guide (63c) raises the turn carriage (40), and the pin (65) is placed at the upper end of the lifting guide (63c) and at the end of the lifting (64c). When it moves, it detects this and stops the motor (55).

Further, in the state shown in FIG. 11 (e), the lock body (50) comes into contact with the tapered surface (51) and is supported at the unlock position against the spring (53), and the upper pick-up from the turn carriage (40). The pickup stand (21) is moved to the guide body (22), and the pickup stand (21) can be moved between the upper pickup guide body (22) and the turn carriage (40).

Also, when moving the pickup table (21) of the upper pickup guide body (22) to the lower pickup (23),
The pickup table (21) was received in the turn carriage (40) in the state of FIG. 11 (e), and the drive gear (54) was rotated in the clockwise direction opposite to the above to lower the turn carriage (40) in the downward posture. Then, rotate the turn carriage (40) upward by rotating it approximately 180 degrees clockwise, and further lower the turn carriage (40) to the state shown in FIG. (21) is moved to the lower pickup guide body (23).

Further, as shown in FIGS. 8 and 9, concave grooves (66) and (67), which are engaging bodies, are integrally formed on the support bases (29a) and (30a) of the pickup rails (29) and (30). A wedge-shaped rib (68) as an engaging body is integrally formed with the front spherical guide body (45), and the rib is inserted into the concave grooves (66) and (67) in the state of FIGS. 11 (a) and 11 (e). (68) is engaged to position the pickup table (21) and the upper and lower pickup guide bodies (22) (23) in the left and right directions. The concave grooves (66) (67) and the ribs (68) The fitting operation reduces the integration error, and the pickup guide (22) (23)
1) is configured so as to face each other.

Further, as shown in FIGS. 8 and 12, when the pin (48) of the pickup stand (21) is engaged with the notch (47) of the turn carriage (40), the boarding completion switch which is switched by the pin (48). (69), the switch (69) is fixed to the turn carriage (40), and when the upper surface of the disc (7) is being reproduced as shown in FIG.
5) The pick-up table (21) is moved to the carriage (40) by the opening operation, the switch (69) is operated, and the reverse rotation of the motor (55) is started to start the motor (55).
At the same time as performing the operation of (b), the switch (69)
By operating the loading motor (70) shown in FIG. 1 and moving the tray (15) out by opening the tray (15), even if the tray (15) is raised and the disc (7) is lifted, the disc (7) is lifted. 7) Make sure that the reinforcing plate (15a) of the inner tray (15) does not hit the pickup (19), and that the pickup (19) has moved to the inner periphery of the lower surface of the disc (7) as in the past. Tray (15) compared to conventional means to detect and exit tray (15)
It is configured such that the leaving time can be shortened and the disk (7) can be quickly taken out.

Further, as shown in FIGS. 7 and 11, a turn cam (71) is formed integrally with the drive gear (54).
A discriminating switch (72) for discriminating whether the rotation of the drive gear (54) is in the turn area or the tilt area is provided.
(B) The switch (72) is turned off in the tilt region of (d) to (e), and the switch (72) is turned on in the turn region of (b) to (d) of FIG. ) When the switch (72) is turned on during reproduction, the tilt adjustment is performed only in the opposite direction, and the drive gear (54) is prevented from rotating to the turn region.

Further, as shown in FIGS. 1 and 13 to 15, left and right rail stands (73) fixedly provided on both sides of the lower deck chassis (3).
(73), and left and right loading cam plates (74) and (74) for moving the tray (15) up and down and slide in and out.
4) Cam plate (74) via hook piece (75) ...
To the rail base (73) so that it can slide back and forth, and connect the interlocking shaft (78) to the rack gears (76) (76) of each cam plate (74) (74) via pinion gears (77) (77). The cam plates (74) and (74) are slid in conjunction with each other, and the loading motor (70) is fixedly mounted on the right rail stand (73) via the motor chassis (79), and the belt (80) and the pulley ( 81),
The output gear (88) of the motor (70) is connected to the loading gear (87) via the reduction gear (82) (83) (84) (85) (86), and the rack gear (74) of the right cam plate (74) is connected. The loading gear (87) is meshed with 89), and the left and right cam plates (74), (74) are reciprocated back and forth by the motor (70).

Further, the pins (90) (90) of the slide rail (16) are passed through the rail base (73) and the cam plate (74), and the substantially vertical lifting guide grooves (91) (91) of the rail base (73) are formed. And the pin (90) in the skewed cam groove (92) (92) of the cam plate (74).
(90) is slidably inserted, and the receiving plate (93) is set up substantially in parallel with the slide rail (16).
Pin between the cam plate (74) and the receiving plate (93).
(95) is slidably inserted into the horizontal guide grooves (96) and (96) of the rail (16), and the elevating guide grooves (9
7) and the skew cam groove (98) of the cam plate (74)
3) Insert one of the pins (95) slidably.

Then, as the cam plate (74) advances, the slide rail (16) and the receiving plate (93) are raised and supported as shown in FIG.
When the cam plate (74) further moves forward, the receiving plate (93)
By moving the cam plate (74) backward in the state shown in FIG.
6) and the receiving plate (93) are lowered, and the tray (15) is lowered to place the disc (7) on the turntable (6).
In the reproduction state shown in the figure, the post (99) erected on the left rail stand (73) is the opening (100) in the tray (15).
And the tray (15) is configured to be prevented from moving in the horizontal direction at the lowered position.

Further, an access rail (101) is provided on the upper surface of the slide rail (16) so as to be slidable back and forth, and a guide roller (102) is provided.
... The tray (15) is slidably attached to the access rail (101) forward and backward via the (103).

The receiving gear (104) is supported by the receiving plate (93), and the rack gear (105) of the slide rail (16) and the rack gear (106) of the sliding rail (101) are moved in and out of the rack.
4), and the double-speed mechanism (107) formed by the gears (104), (105), (106) slides the entrance / exit rail (101) at double speed of the cam plate (74), and slides the slide rail (16). ) And the rack gear (109) of the tray (15) and the pinion gear (11) of the access rail (101).
0), and the tray (15) is slid at twice the speed of the entrance / exit rail (101) by the double speed mechanism (111) formed by the gears (108), (109), and (110). Tray (15) via double speed mechanism (107) (111) to cam plate (74)
, And the tray (15) is moved in and out by sliding the cam plate (74) in and out of the motor (70) by four times.

Further, as shown in FIG. 13, FIG. 17, and FIG. 18, a chuck plate (18) is attached via a holder (112) to the tip of an L-shaped chuck arm (17) (17) in a side view, and a deck chassis. (2) (3) Left and right chuck arms on both sides (17)
(17) is brought into sliding contact with the chassis (2) (3) to make the left-right width substantially equal to the left-right chuck arm (17) (17) mounting width, and the L-shaped middle of the chuck arm (17) is supported by the support shaft (113). While being supported by the upper deck chassis (2), the fixing pin (115) of the chassis (2) is inserted into the elongated hole (114) of the chuck arm (17), and the arm (17) is inserted through the elongated hole (114).
The swing amount is regulated, and the arm (17) is swung by using the deck chassis (2) (3) as a guide. A spring (116) for supporting the chuck plate (18) ascending is connected to the arm (17). I have.

A chucking cam groove (117) is formed at the rear end of the loading cam plate (74), and a pin (118) engaged with the cam groove (117) is fixed to the chuck arm (17). When the cam plate (74) moves forward by the pinion gear (77) and the pinion gear (77), the chuck plate (18) rises as shown in FIG. 17 and the cam plate (74) is moved by the gears (76) (77). When retracted, insert the pin (1
18) engages and chuck arm (1) against spring (116).
7) is swung to lower the chuck plate (18) to perform a disc chucking operation for joining to the turntable (6).

"Effects of the Invention" As is apparent from the above embodiment, the present invention includes a deck chassis (2) (3) for movably mounting the pickup (19) on the upper and lower surfaces of the discs (7) (8).
A chuck plate (18) for supporting the disks (7) and (8) on the turntable (6) is attached to the chuck arm (17), and the chuck arm (17) is rotated on both sides of the deck chassis (2) (3). Since the chuck arm (17) is positioned in the left-right direction by the side surface of the deck chassis (2) (3), the chuck arm (17) is positioned freely with respect to the turntable (6) on the deck chassis (2) (3) side. The chuck plate (18) on the chuck arm (17) side can be easily mounted at an appropriate position, and the mounting error of the chuck plate (18) can be reduced more easily than in the past. It is possible to easily improve the safety and certainty of the chucking operation.

In addition, the present invention particularly includes a loading cam plate (74) for moving a disc into and out of a loading position and an ejecting position, and engaging pins (74) with either the loading cam plate (74) or the chuck arm (17). 118), and a chucking cam groove (117) for slidably engaging the engaging pin (118) is provided on the other side, and the chuck arm (17) is moved up and down by the longitudinal movement of the loading cam plate (74). Therefore, loading and chucking of the disc can be performed smoothly and at extremely accurate timing.

[Brief description of the drawings]

FIG. 1 is a front view of a tray mounting portion showing one embodiment of the present invention, FIG. 2 is a plan view of the whole, FIG. 3 is a side view of a pickup mounting portion, FIG. FIG. 6 is a partial side view, FIG. 6 is a front view of a turn carriage mounting portion, FIG. 7 is a plan view of the same portion, FIG.
FIG. 9 is an explanatory side view showing the movement of the pickup table, FIG.
FIG. 11 is a rear view of the pickup mounting portion, FIG. 11 is an explanatory view of the movement of the turn carriage, FIG. 12 is a side explanatory view showing the movement of the pickup, FIG. 13 is a plan view of the tray mounting portion, and FIG. 15 is a side view of the tray mounting portion,
FIG. 16 is a plan view of a slide rail, and FIGS. 17 and 18 are side views of a chuck arm mounting portion. (2) (3) Deck chassis (6) Turntable (7) (8) Disc (17) Chuck arm (18) Chuck plate (19) Pickup

Claims (1)

(57) [Scope of request for utility model registration] 1. A chuck arm comprising a deck chassis (2) (3) for movably mounting a pickup (19) on the upper and lower surfaces of a disk, and a chuck plate (18) for supporting the disk on a turntable (6). (17) is supported on both sides of the deck chassis (2) and (3) so as to be movable up and down, and a loading cam plate (74) for moving a disk into and out of a loading position and an eject position is provided. 74) and one of the chuck arms (17) is provided with an engagement pin (118), and the other is provided with a chucking cam groove (117) for slidably engaging the engagement pin (118). A disc player characterized in that the chuck arm (17) is moved up and down by the longitudinal movement of a loading cam plate (74).