JPH0728575Y2 - Disc player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention records, for example, music or video by converting it into a digital signal, or a recorded disc is supported on a turntable, and is picked up on both sides or one side of the disc by a pickup. The present invention relates to a disc player that records information or reproduces information.

“Conventional Technology” Conventionally, there has been a technology in which a disc is supported horizontally by a turntable and a pickup is moved to the upper and lower surfaces of the disc to read information on the upper and lower surfaces of the disc.

[Problems to be Solved by the Invention] In the prior art, when a turn carriage for moving the pickup to the upper and lower surfaces of the disc is provided, the turn carriage has a left-right direction with respect to a pickup guide body that supports the pickup on the upper and lower surfaces of the disc. However, there is a problem in that the turn carriage mounting structure cannot be simplified and the mounting accuracy cannot be easily improved.

[Means for Solving the Problems] However, according to the present invention, the upper and lower deck chassis and the rear plate integrally connected to each other in a U shape in a side view and the upper and lower deck chassis are swingably mounted to guide the pickup to move in the disk radial direction. An upper and lower pickup guide body and a turn carriage which is attached to a rear plate so as to be vertically movable and rotatably move the pickup to one end side of the upper and lower pickup guide body are provided. The pickup receiving end is provided with an engaging portion that engages and disengages when the turn carriage is moved up and down, and the upper and lower pickup guides facing the pickup moving direction and the turn carriage are positioned in the horizontal direction orthogonal to the pickup moving direction. It is a thing.

[Operation] Therefore, since the turn carriage is connected to the pickup guide body by using the raising / lowering operation of the turn carriage,
Positioning of the pickup guide body and the turn carriage in the left-right direction can be easily performed with the engaging body of a simple structure, and the pickup guide body and the turn carriage are connected by the direct fitting operation of the engaging body, so there are few integration errors and positioning accuracy. Can be easily improved.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
The figure is a front view of the tray mounting part, and Fig. 2 is a plan view of the whole. The upper and lower deck chassis (2) (3) are equipped with a rectangular box-shaped case (1) and are integrally connected in a U-shape in side view. Is fixed to the inside of the case (1), the turntable motor (4) is fixed to the lower deck chassis (3), and the turntable (6) is attached to the upper end of the output shaft (5) of the motor (4). Fix it.

Also, a video disc with a diameter of 30 cm (7), a diameter of 20 cm
Disc mounting surface (11) (12) on which a small-diameter video disc (8), a compact disc (12) with a diameter of 12 cm, and a small-diameter compact disc (10) with a diameter of 8 cm are placed.
(13) with a tray (15) formed with (14),
Tray (1) via the left and right slide rails (16) (16)
5) is attached to the case (1) of this machine so that it can be freely inserted and removed.
When the tray (15) is inserted into the case (1), the tray (15) descends, puts the disks (7) to (10) on the turntable (6), and supports them 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)
The disks (7) to (10) are configured to rotate integrally with the disk.

Further, as shown in FIGS. 3 and 4, a pickup stand (21) for mounting a leather pickup (19), a traveling motor (20), etc., and discs (7), (8) supported by a turntable (6). Pick up on both sides (19)
Upper and lower pick-up guide bodies (22) (23)
The guide chassis (22) (23) is provided with a tilt adjusting fulcrum shaft (24) (25) on the front end side of the guide chassis (22) (23).
It is attached to (3) so that it can swing vertically, and the stopper is attached by its own weight so that the rear end side of the upper pickup guide body (22) has the maximum downward warp angle for tilt adjustment (about 2 degrees downward with respect to the horizontal line). While tilting down to the (26) position, use the spring (27) to stop so that the rear end of the lower pickup guide body (23) has the maximum upward warp angle for tilt adjustment (about 1 degree upward with respect to the horizontal line). (28) A disc (7) that is raised and inclined to the position and is supported by the turntable (6).
Upper and lower pickup guide bodies (22) and (23) are attached to the upper and lower surfaces of (8) so that tilt adjustment can be freely performed.

In addition, a pickup rail (29) (30) slidably fitted and inserted into the pickup base (21) and a rack gear (33) for elastically meshing an output gear (31) of a traveling motor (20) with a spring (32). ) (34) are fixed to symmetrical positions of the upper and lower pickup guide bodies (22) and (23), respectively, and the pickup stand (2) opposite to the output gear (31) is provided.
1) A guide roller (35) is supported on the side surface, and the roller (3
5) Roll the guide grooves (36) (37) into each guide body (2
2) It is formed on one side of (23), and the pickup rails (29) (30), the rack gears (33) (34), and the guide grooves (36) (37) are extended substantially parallel to the front-rear direction. The pickup rails (29) (30) are arranged between the rack gears (33) (34) and the guide grooves (36) (37).

Further, as shown in FIG. 5, a pressure roller (39) is attached to the side surface of the pickup table (21) provided with the guide roller (35) through a leaf spring (38), and an upper pickup guide body (22) is provided. The pressure roller (39) is brought into pressure contact with the guide groove (36) surface on the side where one side is bent, and the guide roller (35) is provided on the guide groove (36) surface on the same side where the pickup rail (29) is provided. The guide roller (35) is mounted on the same surface as the pickup rail (29) mounting surface to improve the support position accuracy of the pickup (19) and to mount the pickup rail (29) mounting parts. The same structure as the lower pickup rail (30) 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 guide bodies (22) and (23), and a rear surface of the deck chassis (2) (3) is provided. The turn carriage (40) is attached to the rear plate (41) fixed to the center plate (42) via the center pin (42). The long hole (40) of the turn carriage (40) is substantially vertical at the pickup / removal position (21). The center pin (42) is slidably and rotatably engaged with the 43), and the turn carriage (40) is moved up and down between the upper and lower surfaces of the disks (7) and (8) supported by the turntable (6). Is configured as follows.

The turn carriage (40) also includes front and rear spherical guide bodies (45) and (46) slidably fitted in the bearing holes (44) of the pickup base (21) like the pickup rails (29) and (30). When the pickup base (21) is moved in and out of the pickup guides (21), the spherical guide bodies (45) (45) ( 46) is fixed to the turn carriage (40), and the front spherical guide body (45) facing the frustoconical heads (29a) (30a) of the pickup rails (29) (30) is formed into a rugby ball shape. The rear spherical guide body (46) is formed in a truncated cone shape, and the pickup carriage (21) is turned through the rack gears (33) (34) of the pickup guide bodies (22) (23) to the turn carriage (40). )
The spherical guide bodies (45) (46) are fitted into the bearing holes (44) of the pickup base (21), and the rack gears (33) (3) (3) are rotated by reversing the output gear (31).
The pickup table (21) is made to retreat from the turn carriage (40) to the pickup guide bodies (22) and (23) via 4).

Further, a pin (48) to be engaged with the engaging notch (47) of the turn carriage (40) is fixed to the pickup base (21), and the notch (47) and the pin (48) are engaged with each other to guide the spherical guide. Pickup stand (2) centered on the body (45) (46)
The rotation of 1) is blocked and the pickup base (2
1) A lock body (50) for engaging and disengaging in a fixed notch (49) on the bottom side is provided, and the lock body (50) is slidably attached to a turn carriage (40), and a turn carriage (40). The upper and lower tapered surfaces (51) of the rear plate (41) at the lifting end of
When the lock body (50) is brought into contact with (52), the spring (53)
To move the lock body (50) to the unlock position,
While the pickup carriage (21) is moved in and out of the turn carriage (40), at other times, the lock body (50) is held by the notch (49) by the spring (53), and the pickup carriage (21) is moved in and out. It is configured to prevent movement.

Further, as shown in FIG. 9 and FIG. 10, a drive gear (5
4), the gear (54) is supported by the center pin (42) as an idle shaft, and the turn carriage motor (55) is fixedly mounted on the back plate (41). The output pulley (61) of the motor (55) is interlocked with the drive gear (54) through the pulley (57) and the reduction gears (58) (59) (60), and the drive gear (54) is driven by the motor (55). 54) is configured to be driven in forward and reverse directions.

A spring (62) for loosely fitting and supporting the center pin (42) on the back plate (41) and for slidingly supporting the turn carriage (40) and the drive gear (54) on the back plate (41).
Is provided for elastically supporting the turn carriage (40) on the rear plate (41) by the center pin (42) and the spring (62). When the pickup base (21) is moved in and out of the turn carriage (40), Even if the spherical guide body (45) is located higher than the pickup rail (30) as shown in FIG. 9, the turn carriage (40) causes the spring (62) to move due to the fitting force between the guide body (45) and the bearing hole (44). ) Against the pickup rail (30), the turn carriage (40) has a spring (62) while the downward displacement is caused by the spring (62). The pickup table (21) is moved to the turn carriage (40) by being displaced in the upward posture against the.

When the pickup base (21) moves from the pickup rail (29) of the upper pickup guide body (22) to the turn carriage (40), the turn carriage (40) is displaced and the turn carriage (40) is moved in the same manner as described above. 40)
When the pickup stand (21) moves from the pickup rail (29) (30) to the pickup rail (29)
The turn carriage (40) is displaced by the fitting force between the heads (29a) (30a) of the (30) and the bearing hole (44).

Further, as shown in FIG. 10 and FIG. 11, a cam groove (63) for moving the turn carriage (40) up and down and rotating is provided in the rear plate (41), and a semicircular rotation guide portion (63a) and the portion. (6
3a) is formed in the cam groove (63) with elevating guide portions (63b) (63c) communicating with both ends, and a drive groove (64) is provided in the drive gear (54), and a rotating portion (64a)
And an elevating part (64b) (64b) that communicates with both ends of the part (64a).
c) and are formed in the drive groove (64).

A moving pin (65) fixed to the turn carriage (21) is slidably engaged with the cam groove (63) and the drive groove (64), and the drive groove (54) rotates to drive the drive groove. The pin (65) moves in (64),
The pin (65) is moved up and down and rotated by the guide of the cam groove (63), and the turn carriage (40) is moved up and down with respect to the center pin (42).

Then, as shown in FIGS. 10 and 11 (a), the cam groove (63)
When the moving pin (65) is located at one end of the elevating part (64b) of the drive groove (64) at the lower end of the lower elevating guide part (63b) of the lock body (50), the lock body (50) is tapered surface (52). It is supported by the lock release position against the spring (53) against the spring (53) so that the pickup base (21) can be moved between the lower pickup guide body (23) and the turn carriage (40).

When the turn carriage (40) receives the pickup stand (21) in the state shown in Fig. 11 (a), it detects this and activates the motor (55) to turn the drive gear (54) counterclockwise (arrow). ) Direction, at this time, the pin (65) moves in the elevating part (64b), and the center pin (42)
And the long hole (43), the moving pin (65) and the lifting guide (63).
The relative movement of b) raises the turn carriage (40), and the spring (53) causes the lock body (50) to engage with the pickup base (21), and the lock body (50), the pin (48), and the spherical guide. The pickup table (21) is fixedly supported on the turn carriage (40) by the bodies (45) and (46).

Then, as shown in Fig. 11 (b), set the drive gear (54) to approx.
When rotated 180 degrees, the pin (65) moves from the lifting guide (63b) to the rotation guide (63a), and the drive groove (6
The pin (65) is held by the rotating part (64a) of 4), and the pin (65) moves in the rotation guide part (63a) as shown in Fig. 11 (c), centering on the center pin (42). The turn carriage (40) in the upward position is rotated counterclockwise.

In addition, as shown in Fig. 11 (d), the drive gear (54) is approximately 36
When rotated by 0 degrees, the turn carriage (40) rotates about 180 degrees and is supported downward. The rotation guide section (63a)
Pin (65) moves to the up-and-down guide section (63c) and moves the pin (65) of the rotating section (64a) to the up-and-down section (64c) on the other side.

Then, as shown in Fig. 11 (e), set the drive gear (54) to approx.
By rotating it 270 degrees, the lifting part (64c)
5) moves, the center pin (42) and the long hole (43), and the relative movement of the moving pin (65) and the elevating guide part (63c) raises the turn carriage (40), and the elevating guide part (63).
c) When the pin (65) moves to the upper end and the end of the elevating part (64c), this is detected and the motor (55) is stopped.

Further, in the state of FIG. 11 (e), the lock body (50) contacts the tapered surface (51) and is supported at the unlocked position against the spring (53), and is picked up from the turn carriage (40). The pickup table (21) is moved to the guide body (22), and the pickup table (21) can be moved between the upper pickup guide body (22) and the turn carriage (40).

Also, when moving the pickup base (21) of the upper pickup guide body (22) to the lower pickup (23),
After receiving the pickup stand (21) in the turn carriage (40) in the state of Fig. (E), rotating the drive gear (54) in the clockwise direction opposite to the above, and lowering the turn carriage (40) in the downward position. , Rotate the clockwise 180 degrees to support the turn carriage (40) upward, and further lower the turn carriage (40) to return it to the state of FIG. 12 (a), and pick up the turn carriage (40) pickup table ( 21) is moved to the lower pickup guide body (23).

Further, as shown in FIG. 8 and FIG. 9, concave grooves (66) (67), which are engaging bodies, are integrally formed on the heads (29a) (30a) support bases of the pickup rails (29) (30). A wedge-shaped rib (68), which is an engaging body, is integrally formed with the front spherical guide body (45), and the ribs are formed in the concave grooves (66) and (67) in the state of FIGS. 11 (a) and (e). (68) is engaged to position the pickup base (21) and the upper and lower pickup guide bodies (22) and (23) left and right, directly between the concave grooves (66) (67) and the ribs (68). Due to the fitting operation, the integration error is reduced and the pickup guide (22) (23) is attached to the pickup base (2
1) are arranged to face each other.

Further, as shown in FIGS. 8 and 12, when the pin (48) of the pickup table (21) is engaged with the notch (47) of the turn carriage (40), the loading completion switch 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 reproduced as shown in FIG. 12, the tray (15) is
When the pick-up base (21) is moved to the carriage (40) by the open operation, the switch (69) is activated, and the reverse rotation of the motor (55) is started to cause the operation of FIG. 11 (d) to (b). At the same time, the loading motor (70) shown in FIG. 1 is operated by the switch (69), and the tray (15) is ejected by the opening operation of the tray (15). By raising the tray (15), the disc (7) is moved. Even if you lift up, the reinforcing plate (15a) of the tray (15) inside the disc (7) will not hit the pickup (19),
Moreover, as compared with the conventional means for exiting the tray (15) by detecting the movement of the pickup (19) to the inner circumference of the lower surface of the disk (7), the time required for exiting the tray (15) is shortened. It is constructed so that it can be taken out in 7) promptly.

Further, as shown in FIGS. 7 and 11, a turn cam (71) is formed integrally with the drive gear (54), and the rotation of the drive gear (54) determines whether a turn region is a tilt region or not. 72) is provided and Fig. 11 (a) ~
The switches (72) are turned off in the tilt areas of (b) and (d) to (e), and the switches (72) are turned on in the turn areas of (b) to (d) of FIG. ) When the switch (72) is turned on during the reproduction, the tilt adjustment is performed only in the opposite direction to prevent the drive gear (54) from rotating to the turn region.

Further, as shown in FIGS. 1 and 13 to 15, left and right rail bases (73) fixed to both sides of the lower deck chassis (3).
(73) and left and right loading cam plates (74) (74) for moving the tray (15) up and down and sliding in and out, and the cam plate (7)
4) Cam plate (74) via hook piece (75) ...
Is attached to the rail base (73) so that it can slide back and forth, and the interlocking shaft (78) is connected to the rack gears (76) (76) of each cam plate (74) (74) via the pinion gears (77) (77). , The cam plates (74) (74) are slid together, and the loading motor (70) is fixedly mounted on the right rail base (73) via the motor chassis (79), and the belt (80) and pulley ( 81),
The output gear (88) of the motor (70) is connected to the loading gear (87) through the reduction gears (82) (83) (84) (85) (86), and the rack gear (of the right cam plate (74) ( The loading gear (87) is engaged with the motor 89 (89), and the left and right cam plates (74) (74) are slid back and forth by the motor (70).

In addition, the pins (90) (90) of the slide rail (16) are passed through the rail base (73) and the cam plate (74), and the rail base (7)
3) Vertical guide grooves (91) (91) and the cam plate (7)
4) The slanting cam groove (92) (92) and the pin (90) (9
(0) is slidably inserted and slide rail (1
6) The receiving plate (93) which is erected substantially parallel to the above is held between the rail (16) and the cam plate (74), and the pin (94) of the receiving plate (93) is held.
(95) is slidably inserted into the horizontal guide grooves (96) (96) of the rail (16), and the lifting guide groove (9) of the rail base (73) is inserted.
7) and the cam plate (74) in the oblique cam groove (98).
3) Insert one of the pins (95) so that it can slide freely.

Then, as the cam plate (74) advances, the slide rail (16) and the receiving plate (93) are lifted and supported as shown in FIG. 15, and the cam plate (74) further advances to substantially eliminate the receiving plate (93). The slide rail (16) is moved forward at the same speed and by moving the cam plate (74) backward in the state shown in FIG.
Then, the receiving plate (93) descends, the tray (15) descends, and the disc (7) is placed on the turntable (6). Then, the reproduction state shown in FIG. 12 is reached. At this time, the disc stands on the left rail stand (73). The post (99) thus set is fitted in the opening (100) of the tray (15) so that the tray (15) is prevented from moving in the horizontal direction at the lowered position.

Further, an entrance / exit 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.
Attach the tray (15) to the rail (101) via the (103) so that it can slide back and forth.

In addition, the receiving plate (93) is pivotally supported by the in-out gear (104),
Rack gear (105) of slide rail (16) and rack gear (106) of rail rail (101)
And the sliding rail (1) is slid at the double speed mechanism (107) formed by the gears (104), (105) and (106) to slide the door rail (101) at the double speed of the cam plate (74).
6) Rack gear (108) and tray (15) rack gear (109) in / out rail (101) pinion gear (110)
The tray (15) is slid at the double speed of the entrance / exit rail (101) by the double speed mechanism (111) formed by meshing the gears (108) (109) (110). The tray (15) is connected to the cam plate (74) via (107) and (111), and the sliding speed of the cam plate (74) moving in and out by the motor (70) is increased four times to increase the tray (15). Is configured to slide in and out.

Further, as shown in FIG. 13, FIG. 17 and FIG. 18, the chuck plate (18) is attached to the tips of the left and right chuck arms (17) (17) having an L-shaped side view through the holder (112), and the deck chassis is attached. (2) (3) Left and right chuck arms (17) on both sides
(17) are slidably contacted to each other so that the left and right widths of the chassis (2) and (3) are substantially equal to the mounting widths of the left and right chuck arms (17) and (17), and the L-shaped middle of the chuck arm (17) is supported by the support shaft (113). The upper deck chassis (2) is pivotally supported, 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 formed by the elongated hole (114).
The amount of rocking is regulated, and the arm (17) is rocked using the deck chassis (2) and (3) as a guide. A spring (116) for lifting and supporting the chuck plate (18) is connected to the arm (17). There is.

Also, a chucking cam groove (117) is formed at the rear end of the loading cam plate (74), and a pin (118) to be engaged with the cam groove (117) is fixed to the chuck arm (17). When the cam plate (74) is moved forward by the (76) and the pinion gear (77), the chuck plate (18) rises as shown in FIG. 17 and the cam plate (74) moves by the gears (76) (77). When retracted, insert the pin (1
18) engages, and the chuck arm (1
The disk chucking operation of swinging 7) and lowering the chuck plate (18) to bond it to the turntable (6) is performed.

[Advantages of the Invention] As is apparent from the above embodiments, the present invention has upper and lower deck chassis (1) and (2) and a rear plate (41) integrally connected in a U-shape in a side view, and upper and lower deck chassis (1) (2). ), And upper and lower pickup guide bodies (22) and (23) for swingably mounting the pickup (19) in the radial direction of the disc.
A turn carriage (40) is attached to the back plate (41) so as to be able to move up and down and rotatably, and the turn carriage (40) for reversing and moving the pickup (19) to one end side of the upper and lower pickup guide bodies (22, 23) is provided. 22) (23) end of the turn carriage (40) and the turn carriage (40)
Engaging part (66) (67) (6) which is engaged and disengaged with the pick-up (19) receiving end of the turn carriage (40)
8) is provided so that the upper and lower pickup guide bodies (22) (23) and the turn carriage (40) are positioned in the left-right direction perpendicular to the moving direction of the pickup (19) with respect to the moving direction of the pickup (19). Since the turn carriage (40) is connected to the pickup guide bodies (22) and (23) by using the raising and lowering operation of the turn carriage (40), the engaging bodies (66) (67) (68) having a simple structure are used for pickup. Guide bodies (22) (23) and turn carriage (40)
The positioning of the pickup guide bodies (22) (23) and the turn carriage (40) can be performed by the direct fitting operation of the engaging bodies (66) (67) (68) while the lateral positioning of the The integration error is small, and the positioning accuracy can be easily improved.

[Brief description of drawings]

1 is a front view of a tray mounting portion showing an embodiment of the present invention, FIG. 2 is an overall plan view, FIG. 3 is a side view of a pickup mounting portion, FIG. 4 is a sectional front view of the same, and FIG. The figure is a partial side view, FIG. 6 is a front view of the turn carriage mounting portion, FIG. 7 is a plan view of the same portion, and FIG. 8 is a front view of the turn carriage.
FIG. 9 is a side view showing the movement of the pickup table, and FIG.
The figure is a rear view of the pickup mounting part, 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 part, and Fig. 14 is a rail stand. Fig. 15 is a side view of the tray mounting part,
FIG. 16 is a plan view of the slide rail, and FIGS. 17 and 18 are side views of the chuck arm attachment portion. (7) to (10) …… Disc (19) …… Pickup (22) (23) …… Pickup guide body (40) …… Turn carriage (66) (67) …… Concave groove (engagement body) ( 68) …… Rib (engagement body)

Claims (1)

[Scope of utility model registration request] 1. A pickup (1) which is swingably attached to upper and lower deck chassis (1) and (2) and upper and lower deck chassis (1) and (2) and a rear plate (41) which are integrally connected to each other in a U-shape in a side view.
Upper and lower pickup guide bodies (22) and (23) for guiding and guiding 9) in the disc radial direction, and a pickup (19) mounted on a rear plate (41) so as to be vertically movable and rotatable, and upper and lower pickup guide bodies (22) and (23). A turn carriage (40) for reversing movement is provided on one end side of the upper and lower ends of the upper and lower pickup guide bodies (22) and (23), and a pickup (19) receiving end of the turn carriage (40). The engaging portions (66) (67) (68) that are engaged and disengaged when the turn carriage (40) is moved up and down are provided on the pickup (1
9) Vertical pick-up guide body (22) for the moving direction
(23) and turn carriage (40) pickup (19)
A disc player characterized in that it is configured to perform lateral positioning orthogonal to the moving direction.