JPH0753168Y2 - Disc player disc loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention relates to a disc mounting device of a disc player for reading a digital signal recorded on a disc by a laser pickup and reproducing the digital signal.

"Prior Art" Conventionally, as shown in Japanese Patent Application Laid-Open No. 60-80159, a tray for loading and withdrawing a disc is provided, and the tray is withdrawn to exchange and eject the disc. There was a technique to hold the disc on the turntable.

[Problems to be solved by the invention] In the conventional technology, a clutch surface for making a half-clutch contact with the tray is formed in the disk loading / unloading gear, and the tray is slightly retracted by the rotation of the gear, Since the gear was started to mesh with the rack, the tray ejection operation time until the gear meshed with the rack was indefinite, and the tray ejection operation was caused by the time gap between the tray ejection operation and the rack ejection. Had a problem of becoming slow.

"Means for Solving Problems" However, according to the present invention, a rack is formed on a tray on which a disk is placed, and a disk loading / unloading gear that starts meshing with the rack when the tray is slightly moved in the retracted direction from the storage position is provided. In the disc mounting device of the provided disc player, a notch is formed in the tray, and a lock roll attached to a member pivotally rotatably provided with a rotational urging force is provided to the chassis of the main body, and the lock roll is provided. Engaging with the notch at the meshing start position of the rack and the disk loading / unloading gear, and applying the direction of rotation in the direction of the notch of the tray in accordance with the rotation biasing direction of the member. , The tray is pushed further toward the storage position as the lock roll enters the notch, and the tray moves by the lock roll entering the deepest part of the notch. Is moved to the storage position, and the tray is provided with a leaf spring that causes the rack to come into contact with the rack at the meshing start position of the rack and the gear to start flexural deformation. The flexural deformation amount is increased in accordance with the above, and the flexural deformation amount is maximized when the rock roll enters the deepest part of the notch.

[Operation] Therefore, according to the present invention, the elastic force of the leaf spring is the strongest when the lock roll is fitted in the deepest part of the notch and the tray is moved from the meshing start position of the rack and the loading / unloading gear to the storage position. Then, when the tray is operated in the exit direction, that is, when the lock roll is removed from the notch, the tray moves smoothly and instantaneously from the storage position in the exit direction due to the strong repulsive force of the leaf spring, and Because the trays mesh with each other, the tray can be ejected quickly, and the amount of flexural deformation of the leaf springs becomes almost zero at the meshing start position of the rack and the in-out gear. Without adding, the meshing between the rack and the loading / unloading gear can be favorably started, and the loading / unloading operation of the tray that reacts swiftly to the loading / unloading operation of the tray can be obtained.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First
FIG. 2 is a plan view with a tray mounted, FIG. 2 is a schematic plan view, and FIG. 3 is an exploded perspective view. A turntable is provided on the lower surface side of the center of the chassis (2) of the main body of the disc player case (1). The drive motor (3) is fixedly mounted, the output shaft (3a) of the motor (3) is projected substantially perpendicularly to the upper surface of the chassis (2), and the turntable (5) for rotating the disk (4) is provided. It is fixed to the upper end of the output shaft (3a).

Further, two columnar rails (8) and (8) are laterally laid on the chassis (2) on the rear side of the motor (3) through the receiving members (6) and (7) and supported by the turntable (5). A laser pickup (9) for reading a recording signal of a disc (4) to be rotated is movably attached to the rail (8) through a pedestal (9a), and the pickup (9) is linearly attached to the turntable (5). It is configured to be brought into and out of contact with each other.

Furthermore, a tray (1
0), and as shown in FIGS. 4 and 5, the disk mounting surface (10a) is formed in the approximate center of the tray (10), and the lifting plate (11) is provided on the back side of the tray (10). Set up. A pair of left and right disc lifting arms (12) (12) formed on the plate (11) are made to project upwards and backwards above the mounting surface (10a), and shafts (13) (13) of the plate (11). U-shaped bearing for tray (10) (14) (14)
The tray (10) with the locking arms (15) and (15) locked to the shafts (13) and (13), and the shaft (13) is rotatably supported by the bearing (14). There is. A plate spring (16) for raising and supporting the plate (11) is fixed to the back surface of the tray (10), and an elevating arm (11) provided on the plate (11) at the left corner of the disc mounting surface (10a). 17) is protruded, and one end of a leaf spring (18) for fixing to the tray (10) is pressed against the arm (17) from the back surface thereof. on the other hand,
A rack (19) having substantially the same length as the front-rear length is formed on the left inner surface of the tray (10), and square protrusions (20) (20) are provided on the left and right outer surfaces of the tray (10). And the sixth
As shown in the figure, guide pieces (21) are provided on the inside of the side wall (2a) of the chassis (2), and the guide pieces (21) (21) are slidably contacted with the upper and lower sides of the protrusion (20) as shown in FIG. The tray (10) is supported by the chassis (2) so that it can be inserted and removed freely, and the guide piece (21) is fitted and fixed to the support piece (22) formed by bending a part of the side wall (2a). As shown in Fig. 10, four guide pieces (21) on one side are attached to support the tray (10) by attaching eight pieces on both sides, and as shown in Fig. 6, a pair of upper and lower guide pieces (21) (2).
A guide pillar (23) is projected from the chassis (2) with respect to 1), and the vertical guide pieces (21) and (21) move the tray (10) up and down, and the upper guide piece (21) and the guide pillar (23). ) Regulates the horizontal movement of the tray (10).

Next, a clamper (24) for fixing the disc (4) on the upper surface of the tray (10) to the turntable (5) is provided, and the clamper (24) is bent into an L shape to form the clamper (24).
The horizontal part (24a) of the upper part of the turntable (5) and the vertical part (24b) of the clamper (24) along the outer surface of the side wall (2a) on the left side of the chassis (2). A chuck plate (25) for sandwiching the disc (4) with 5) is provided. As shown in Fig. 6, chuck plate shaft (25a)
Through the clamper horizontal portion (24a) from above to above, and a washer (26) is fitted to the end of the shaft (25a) so that the chuck plate (25) can freely rotate and move at the tip of the clamper horizontal portion (24a). Fit and support. And the chuck plate shaft (25
a) One end of the leaf spring (27) is pressed against the upper end from above to regulate the upward movement of the chuck plate (25), and a part of the clamper horizontal part (24a) is bent to the upper surface side to face the opposite slope. A protrusion (28) is formed, and the other end of the leaf spring (27) is engaged and supported between the inclined protrusions (28) facing each other, and the leaf spring (27) is clamped by the three protrusions (28). (24) It is fixed on the upper surface. Further, as shown in FIG. 8, the clamper vertical portion (24b) is attached to the fixed shaft (29) and the protrusion (30) of the chassis side wall (2a).
The long hole (31) and the long groove (32) of the chassis are engaged to support the clamper (24) on the left side of the chassis (2) so that the clamper (24) can move up and down, and between the protrusion (30) and the clamper (24) of the chassis (2). A clamper lowering spring (33) is stretched, the clamper (24) is lowered by the spring (33), and the chuck plate (25) is pressed against the upper surface of the turntable (5) via the disc (4). is doing.

Further, an operation lever (34) is provided on the right side of the chassis (2) so as to be slidable in the front-rear direction, and a return spring (35) is attached to the lever (34).
And connect the lever (34) with one end (36a)
An idle lever (36) for connecting the
6) An 8-shaped shaft hole (37) is opened in the middle, and a tongue piece (38) formed by erecting a part of the chassis (2) is fitted into the shaft hole (37) to form the shaft hole (37). Tongue pieces at four points (38)
The lever (36) is horizontally rotatably provided with the tongue piece (38) as a fulcrum in a state where the lever (36) abuts on the tongue (38) to restrict the horizontal movement of the lever (36).

The tray (10) is provided with a disc loading / unloading lever (39) for moving the tray (10) out, and the bent end (39a) of the lever (39) is provided.
The other end (36b) of the idle lever (36) is connected to, and the elongated hole (41) of the access lever (39) is loosely fitted to the cam shaft (40) fixed to the chassis (2).

On the other hand, a single drive motor (42) for moving the pickup (9) and moving the tray (10) in and out is provided.
As shown in Fig. 11, the support shaft (4
3) via which the motor (42) is swingably supported in the horizontal direction, one end of the lever (39) is connected to the motor (42) via the shaft (44), and the pickup (9) is also attached.
Secure the rack (45) to the pedestal (9a) of the
5) Extend to the front side of the chassis (2) and spur gear (46)
The worm (51) provided on the output shaft (50) of the motor (42) is connected to the rack (45) via the (47) and (48) and the worm wheel (49), and is connected to the access lever (39). The force of the return spring (52) holds the worm (51) in mesh with the wheel (49), and the motor (42) moves the pickup (9).

Further, the large-diameter and small-diameter gears (53) (54) integrally formed are pivotally supported on the fixed shaft (55) of the chassis (2), and the spring (5
When the motor (42) is swung by the operation of the levers (34) (36) (39) against 2), the small diameter gear (56) integrally formed with the worm (51) is replaced with the large diameter gear (53). The cam shaft (4) of the chassis (2) is provided with a disk loading / unloading gear (57) that engages with the tray (10) and that starts meshing with the rack (19) when the tray (10) is moved slightly away from the storage position.
The gear (57) is rotatably supported by (0), the gear (57) is meshed with the small diameter gear (54), and the tray (10) is moved in and out by the motor (42).

Further, a clamper lifting cam (58) for controlling the lifting and lowering of the clamper (24) is provided, and the cam (58) is integrally formed under the input / output gear (57) as shown in FIG. 11, and as shown in FIG. The input / output gear (57) and the elevating cam (58) are arranged in front of the clamper (24), and the drive motor (42) is arranged in front of the mounting positions of the turntable (5) and the laser pickup (9). In addition, as shown in FIGS. 3 and 10, the clamper elevating lever (60) for bringing the elevating roll (59) at the other end into contact with the clamper elevating cam (58) having one end (60a) connected to the clamper (24). ) Is provided and the lever (60) middle is attached to the chassis side wall (2a) via the shaft (61), and the storage support notch (62) at the front end one side of the tray (10).
The elevating lever (60) is provided with a lock roll (63), which is a lock member for starting the engagement at the meshing start position of the rack (19) and the ingress / egress gear (57), and the tray (10) is moved in and out of the tray (10). 10) A lock roll (63) is brought into sliding contact with the lower surface of the clamper (24) so that the clamper (24) can be lifted and supported by the lift lever (60).

Further, as shown in FIGS. 10 and 12, the lock roll (6
3) Move the tray (10) in the storage direction and insert the notch (6
2) Enter into the notch (6) at the storage position of the tray (10).
It is fitted in the deepest part of 2) and the chassis of this machine (2)
One end of the leaf spring (18) is brought into contact with the front surface of the rack (19) at the meshing start position of the in-out gear (57) to start flexural deformation, and the lock roll (63) enters into the notch (62). According to the above, the flexural deformation amount of the leaf spring (18) is increased to maximize the flexural deformation amount of the leaf spring (18) when the lock roll (63) is fitted in the deepest part of the notch (62). The movement of the tray (10) from the meshing start position of the (19) and the loading / unloading gear (57) to the storage position is performed by the lock roll (63).
On the other hand, the rack (19) and the in / out gear (5
The leaf spring (18) moves the tray (10) to the meshing start position with the leaf spring (18), and when the fixed support of the tray (10) at the storage position by the lock roll (63) is released, the leaf spring (18) is moved. ), The rack (19) withdrawal start end of the tray (10) is configured to start meshing with the ingress / egress gear (57).

Moreover, as shown in FIG. 8, the lower edge of the elevating lever (60) is brought into contact with the projection (39b) of the disk loading / unloading lever (39) for retracting and operating the tray (10) to restrict the rise of the clamper (24). As shown in FIG. 12, a positioning notch (65) is formed in a cylinder (64) integrally formed with the elevating cam (58) and the inlet / outlet gear (57), and the inlet / outlet gear (57) is formed. The disc loading / unloading lever (39) to be driven is provided with a protrusion (66) so that the protrusion (66) can be engaged with the notch (65) with the tray (10) stored in a fixed position. .

As shown in FIGS. 3 and 10, the pressure arm (67) is integrally formed with the clamper (24), and when the clamper (24) descends, it is applied to the lifting arm (17) of the plate (11). The pressure arm (67) is brought into contact, the lifting arms (12) (12) of the tray (10) are lowered, and the disc (4) of the tray (10) is placed on the turntable (5). .

This embodiment is configured as described above, and by pushing the operation lever (34), the access lever (39) is moved against the spring (52) via the idle lever (36), and the protrusion ( 66) is disengaged from the notch (65), the small diameter gear (56) of the drive motor (42) is meshed with the large diameter gear (53), and the gears (56) (53) (54) (57) are inserted. And the raising / lowering cam (58) is rotated by the motor (42).

The cam (58) pushes down the elevating roll (59) and swings the elevating lever (60), whereby the clamper (2
4) is lifted against the spring (33) to raise the chuck plate (25), and the lifting arm (12) (12) of the tray (10) lifts the disc (4) above the turntable (5). At the same time, the lock roll (63) of the lever (60) separates from the notch (62) of the tray (10), and the tray (10)
The roll (63) comes into contact with the lower surface of the ridge (20) of and the lever (6)
The clamper (24) is lifted and supported via 0).

When the roll (63) comes off the notch (62),
The tray (10) is pushed out by the leaf spring (18) which is pressed to the front surface of the chassis (2) and is deformed to the maximum extent, and the rack (19) of the tray (10) meshes with the entry / exit gear (57), so that the motor (42) The tray (10) is pulled out from the chassis (2) by rotation. The lever (39) (60) is prevented from returning due to the force of the spring (52) from the lever (39),
Complete the exit of the tray (10). At this point, the amount of flexural deformation of the leaf spring (18) is set to almost zero at the meshing start position of the rack (19) and the gear (57) to prevent the rack (19) and the gear (57) from colliding violently. Since it meshes, tooth spills and poor meshing can be prevented.

Then, the disc (4) on the disc mounting surface (10a) of the tray (10) is exchanged, mounted and removed, and the motor (42) is reversed by operating a tray storage switch (not shown). Stored in the chassis (2), the rock roll (63) fits into the notch (6) of the tray (10).
2), clamper (24) descends and chuck plate (2
The disc (4) is fixed to the turntable (5) by means of 5), and the protrusion (66) of the lever (39) is fitted into the notch (65) to fix the lifting cam (58), and then the lever (39). The worm (51) of the motor (42) meshes with the worm wheel (49) by the return of the motor, the pickup (9) is moved by the rotation of the motor (42), and the recording signal of the disc (4) is moved by the pickup (9). It is for reading and reproducing the disc (4).

[Advantage of Invention] As is clear from the above embodiments, the present invention forms the rack (19) on the tray (10) on which the disc (4) is placed, and moves the tray (10) slightly in the retracted direction from the storage position. In the disc loading device of the disc player, which is provided with the disc loading / unloading gear (57) for starting the meshing with the rack (19), the notch (62) is formed in the tray (10), and the notch (62) is formed in the chassis (2) of the unit. A lock roll (63) attached to a member (60) pivotally rotatably provided with a rotation biasing force is provided, and the lock roll (63) is provided in the notch (62) as the rack (19). Engagement is started at the meshing start position with the disc loading / unloading gear (57), and the applying direction is the depth direction of the notch (62) of the tray (10). The rock roll (63) is notched as it rotates in the direction. As the tray (10) is further pushed toward the storage position as it enters the inside of 62) and the lock roll (63) enters the deepest part of the notch (62), the tray (10) moves to the storage position, This machine chassis (2)
The tray (10) is provided with a leaf spring (18) that abuts the rack (19) and the in-out gear (57) at the meshing start position to start the flexural deformation. )
When the lock roll (63) enters the deepest part of the notch (62), the amount of flexural deformation increases and the maximum amount of flexural deformation increases as the rock roll enters the notch (62). When the tray (10) is moved from the meshing start position of the rack (19) and the loading / unloading gear (57) to the storage position by fitting the tray into the deepest part of the notch (62), the elastic force of the leaf spring (18) It becomes the strongest, and then when the tray (10) is operated in the retreat direction, that is, when the lock roll (63) is removed from the notch (62), the tray (10) retreats from the storage position due to the strong repulsive force of the leaf spring (18). Moves smoothly and instantaneously in the direction, and the rack (19) and the in-out gear (57) mesh with each other, so that the tray (10) can be quickly moved out and out, and the rack (19) and the in-out gear can be moved. Deflection amount of leaf spring (18) at the meshing start position with (57) Is almost zero, the rack (19) and the entry / exit gear (57) can be meshed smoothly with each other without excessive force being applied to the engagement between the rack (19) and the entry / exit gear (57). It has a remarkable effect that the output operation of the tray (10), which reacts promptly to the entry / exit operation of (10), can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view in which a tray showing an embodiment of the present invention is mounted, FIG. 2 is a schematic plan view, FIG. 3 is an exploded perspective view, and FIG. 4 is a plan view of the tray. 5 is a bottom view of the tray, FIG. 6 is a front view of the clamper, FIG. 7 is a side view of the operating lever, and FIG.
Figure is a side view of the clamper lifting lever, Figure 9 is a partial enlarged view of the tray, Figure 10 is a partial side view of the tray, Figure 11 is a front view of the clamper loading / unloading gear, and Figure 12 is a plan view of the disk loading / unloading lever. It is a figure. (2)… Machine chassis (4)… Disc (10)… Tray (19)… Rack (57)… Disc loading / unloading gear (62)… Notch (63)… Rock roll

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References: 60-60555 (JP, U): 60-127660 (JP, U): 60-9046 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A rack (19) is formed on a tray (10) on which a disk (4) is placed, and when the tray (10) is moved slightly out of the storage position, the rack (19) starts meshing with the rack (19). In a disc mounting device of a disc player provided with a disc loading / unloading gear (57), the tray (1
A notch (62) is formed in the (0), and a lock roll (63) attached to a member (60) pivotally rotatably provided to the chassis (2) of the main body is provided with the lock roll (63). The roll (63) is started to be inserted into the notch (62) at the meshing start position of the rack (19) and the disc loading / unloading gear (57), and the applying direction is the notch of the tray (10). As the lock roll (63) enters into the notch (62) as the member (60) rotates in the rotational biasing direction in the depth direction of the (62), the tray (10) further moves toward the storage position. The lock roll (63) moves into the deepest part of the notch (62) and the tray (10) moves to the storage position.
In addition, the rack (19) and the entry / exit gear (5
7) The tray (10) is provided with a leaf spring (18) that is brought into contact with the meshing start position to start flexural deformation, and the lock spring (63) of the leaf spring (18) enters into the notch (62). Rock roll (63)
A disc mounting device for a disc player, wherein the amount of flexural deformation is maximized when the groove enters the deepest part of the notch (62).