JP2527602Y2 - Disk mounting device for disk player - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a disc mounting device for a disc player which reads and reproduces information recorded on a disc by digital signals using an optical pickup.

2. Description of the Related Art Conventionally, there has been a technique in which a tray having a disk mounting portion is provided so as to be able to be freely moved in and out, and the disk is supported by a turntable and a chuck plate, so that the disk can be moved in and out and played back.

"Problems to be Solved by the Invention" According to the conventional technology, when the movement of the tray is guided by rolling the rollers on the guide surface, at least four rollers are required, In order to reduce the operating force, it is necessary to support the roller with a bearing with extremely low frictional resistance.This is very disadvantageous in terms of cost and assembly.Therefore, the roller is provided on the guide rail provided on the tray and on the machine side. In many cases, the tray is moved and guided by the guide groove. However, if these guide rails and guide grooves are formed to be relatively long to stabilize the support posture over the entire reciprocating stroke of the tray, the sliding contact surface between the guide rails and the guide grooves becomes longer, and the sliding of the tray becomes longer. There were problems such as an increase in dynamic resistance and the necessity of a large tray in / out operation force.

However, the present invention provides left and right guide rails on both sides of a tray having a disc mounting portion, and a guide groove for slidingly guiding the left and right guide rails on the machine side. In the apparatus for slidably supporting the tray, a guide member having a width substantially equal to the width of the guide groove is provided only at one of the left and right guide rail ends, and the other guide rail is uniformly formed to have the same width. In addition, the guide groove of the guide rail on the side not having the guide member is formed sufficiently shorter than the length of the other guide groove.

[Operation] Accordingly, one guide rail is such that the guide member at this end only makes line contact with the guide groove, and the other guide rail makes surface contact with the guide groove, but the guide groove is longer than the length of the other guide groove. Since it is formed short enough, no extra contact resistance is generated, and the tray entry / extraction operation force can be reduced.When the tray is inserted, the tray swings right and left around the guide member that is in line contact with the guide groove. By doing so, even if the gap between the guide groove and the end of the guide rail is small, one of the guide rails can be easily inserted into the guide groove, and the tray can swing about the guide member even after the tray is inserted. However, in this case, the distance between the guide member serving as the swinging fulcrum of the tray and the other guide rail that regulates swinging and the surface contact portion of the guide groove becomes sufficiently long. The moving angle becomes very small, and the play of the tray can be suppressed to such an extent that there is no problem in use.

"Example" Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall plan view, FIG. 2 is a perspective view, FIG. 3 is a front view, and FIG. 4 is a cross-sectional side view. ), The output shaft (3) of the motor (2) is protruded substantially vertically on the upper surface side of the chassis (1), and the turntable (5) for rotating the disk (4) is connected to the output shaft (3). 3) It is fixed to the upper end.

An optical pickup (7) for reading a recording signal of a disk (4) to be rotated by supporting a column-shaped rail (6) on a chassis (1) on the rear side of the motor (2) and supporting and rotating the turntable (5). Is mounted on the rail (6) so as to be movable, and has a linear motor (8) for moving the pickup (7). The pickup (7) is linearly moved in the radial direction with respect to the axis of the turntable (5). It is configured so that it can come and go.

A chuck arm (9) for fixing the disk (4) to the turntable (5); an intermediate portion of the arm (9) is rotatably supported on the upper surface of the chassis (1) via a support shaft (10); The arm (9) is provided with a spring (1
1), a chuck plate (12) having a permanent magnet is rotatably and loosely supported on one end of the arm (9), and a turntable (5) and the chuck plate (1) are rotatably supported.
The disk (4) is clamped and fixed by 2), and a wiring board (13) is fixed on the upper surface of the chassis (1) behind the chuck arm (9).

Further, there is provided a synthetic resin tray (14) for loading and unloading the disk (4), and a synthetic resin tray support frame (15) is fixed on the front and upper surfaces of the chassis (1).
The tray (14) is supported through the frame (15) so as to be able to freely move in and out, and an eject arm (16) is brought into contact with the storage end of the tray (14). 1) An eject spring (18), which is rotatably mounted on the upper surface via a support shaft (17) and rotates the arm (16) to retreat the tray (14), is connected to the arm (16). Tray (14) in contact with arm (16)
A stopper (19) for restricting the retreat amount is formed on the chassis (1), and is configured to push out the tray (14) through the eject arm (16) by the force of the spring (18).

As shown in FIGS. 5 to 9, the center of the upper surface of the rectangular tray (14) is depressed to form a disk mounting portion (20) having a circular hole shape, and the disk mounting portion (20) is formed on the disk mounting portion (20). A disk mounting / dismounting recess (21) having a bag-like shape in a plan view to be communicated with is provided at a corner of a rectangular upper surface of the tray (14), and the recess (21) is provided.
The disk (4) of the disk mounting portion (20) is supported by the disk holder (22) that allows the disk (4) to move in and out of the mounting portion (20) by inserting a finger from the upper surface opening side into and out of the mounting portion (20). Left and right disk holders (22) are provided on both sides of the disk mounting portion (20), and one end of a support shaft portion (23) on one end side of the disk holder (22) having an L-shaped end face is provided with a bearing portion ( 24) The plate spring (26) is rotatably fitted to the tray (14) and one end is fixed to the back of the tray (14) via a screw (25). The holder (22) is pivotally supported upward by a leaf spring (26), and the disk receiving portion (27) of the holder (22) is opened at both sides of the disk mounting portion (20). ), And lifts and supports the disk (4) by the disk receiving portion (27). 7) forms an inverted mountain-like gradient so that the center is depressed, and makes both ends of the disk receiving portion (27) abut against the lower surface of the outer peripheral portion of the disk (4) to receive the disk (4); A boss (29) for lowering operation is integrally formed on the lower surface of the holder (22) by molding, and by pressing the boss (29), the disk holder (20) within the vertical width of the disk mounting portion (20) of the tray (14). 22) is configured to operate in and out.

FIG. 10 is a bottom view of the chassis (1) with the tray (14) mounted. The lock arm (31) is rotatably supported on the lower surface of the chassis (1) via a support shaft (30). The return spring (32) to the lock arc (31),
A stopper (33) to be in contact with the inside of the front surface of the chassis (1) is integrally formed with the lock arm (31), and the stopper (33) is brought into contact with the chassis (1) by the force of a spring (32). The boss (34), which is a lock member provided on the back surface of the spring (18), is engaged with the lock arm (31) in a detachable manner.
The lock arm (31) has a switch arm (35) rotatably supported by a support shaft (36) so that the lock arm (31) can rotate freely.
When the boss (34) is engaged with the tray (14), the boss (34) contacts one end of the switch arm (35), and the other end of the switch arm (35) contacts the disc mounting switch (37). ), The tray (14) is fixed and the switch (37) is turned on. As shown in FIG. 13, the ejection holes (eject holes) are formed in the front of the chassis (1) and the front of the tray support frame (15). 38) and (39) are respectively opened, the operating rod (40) is inserted into the holes (38) and (39), the stopper (33) is pressed, and the lock arm (31) is pressed against the spring (32).
Is rotated to release the lock arm (31) from the boss (34), and the lock arm (31) is externally moved so that the tray (14) is retracted via the eject arm (16) by the force of the spring (32). It is arranged so that release operation is possible.

It also has a drive arm (42) that is displaced by a disk mounting motor (41), and has a slide guide pin (43) and a long hole (44), and a slide and rotation guide pin (45) and a long hole (4).
6), the drive arm (42) is slidably and rotatably provided on the lower surface side of the chassis (1), and a deformed rack gear (49) having a sliding gear portion (47) and a rotating gear portion (48). Are formed integrally with the drive arm (42).

The motor (41) is attached to the chassis (1) via a bracket (50), and a rack gear (49) is attached to the motor (41) via a worm gear (51), a worm wheel (52) and a reduction gear (53). The worm wheel (52) and the reduction gear (53) are integrally formed and supported integrally with the support shaft (54), and one end of the support shaft (54) is supported by the bracket (50). The rack gear (49)
A guide hole (55) having a shape similar to that of the motor (41) is provided in the drive arm (42), and the other end of the support shaft (54) is slidably engaged with the guide hole (55). By rotating the reduction gear (53) in the forward and reverse directions, each pin (43) (4
The drive arm (42) is slid left and right by the guide of (5), and the drive arm (4) is centered on the slide guide pin (43).
2) is configured to rotate.

Further, a stop switch (56) for returning the drive arm (42) to a position where the tray (14) is moved in and out, an eject button (56) on the front of the frame (15), and a stop switch (56) on the front of the frame (15) An eject switch (58) operated by an eject button (57) is provided. The motor (41) is reversely rotated by an on operation of the eject switch (58), and the ridge (59) of the drive arm (42) is turned off by a stop switch (58). The motor (41) is stopped by being turned on by contacting with the 56), and the left and right tapered portions (60) (60) are integrally formed at both ends of the drive arm (42) to drive as shown in FIG. When the arm (42) is slid in the left-right direction, the taper portion (60) approaches the boss (29) of the disk holder (22), and when the drive arm (42) is rotated, the boss (29) ) Comes into contact with the tapered portion (60) from the inside and the boss (29 ), The disk holder (22) is rotated against the leaf spring (26), and the disk (4) supported by the holder (22) is lowered into the disk mounting portion (20). , Disk (4)
Is mounted on the turntable (5), and the drive arm (42) is configured to move the disk holder (22) into and out of the disk mounting portion (20).

Further, a lifting arm (61) for controlling the lifting and lowering of the chuck plate (12) is provided, and a guide pin (62) and a long hole (63) are provided.
The lift arm (61) is slidably and rotatably supported by the chassis (1), and one end of the lift arm (61) is rotated on one end of the drive arm (42) via a support shaft (64). 1 and 4, a downward tongue piece (65) of one end of the chuck arm (9).
An upward tongue piece (66) that can be freely attached to and separated from the upper surface is integrally formed with the other end of the lifting arm (61), and the lifting arm (6) is formed.
1) is superimposed on the chuck arm (9) to support the chuck plate (12) upward while the drive arm (4)
The lifting arm (61) is slid by the rotating operation of 2), and the chuck plate (12) is lowered by the force of the spring (11) by separating the lifting arm (61) from the chuck arm (9). Yes, the lifting arm (61)
Thus, the vertical movement of the chuck arm (9) is restricted.

Further, a lock release lever (67) for releasing the operation of inserting and fixing the tray (14) by the lock plate (31) and the boss (34) is provided.
8), the lever (67) is rotatably supported on the bearing base (68) via a support shaft (69), and the lever (67) is attached to the drive arm (42). A return spring (70) is connected to the lever (67). When the tray (14) is inserted, the lever (67) is retracted by being pushed by the boss (34) as shown in FIG. When the drive arm (42) slides and rotates as shown in FIGS. 11 and 12, the spring (70) returns and supports the lever (67), and the drive arm (42) returns to the position shown in FIG. When moving, the lock arm (31) is rotated by the lever (67), and the lock arm (31) is detached from the boss (34).

Further, a stopper (71) in the form of a quadrangular prism is integrally formed on the bearing stand (68), and when the drive arm (42) slides as shown in FIG. 11, the stopper is positioned opposite to the boss (72) of the tray (14). Even if the lock arm (31) is detached from the boss (34), the tray (14) is supported at the insertion position by the contact between the stopper (71) and the boss (72), and the drive arm (42) When the arm (4) rotates, the arm (4
2) The step (73) is brought close to the lock arm (31), and the lock arm (31) is brought into contact with the step (73) to prevent the arm (31) from coming off the boss (34). It is configured to prevent it.

Further, as shown in FIGS. 14 and 15, left and right guide rails (74) and (75) are integrally formed on both sides of the tray (14), and guide grooves for slidingly guiding the guide rails (74) and (75). (76) and (77) are formed on the tray support frame (15) on the main unit side, and a plurality of pressing pieces (78) to be in sliding contact with the upper surfaces of the guide rails (74) and (75) are formed on the frame ( A plurality of guides (79), which are formed integrally with the guide rails (74) and (75) and are in sliding contact with inner edges of the guide rails (74) and (75), are formed integrally with the frame (15). The guide rails (74) and (75) are slidably supported by regulating the displacement in the vertical and horizontal directions, and a reinforcing iron plate (81) is fixed by baking on the back of the rail extension (80) of the tray (14). Let me.

Further, a retaining screw (82) is fixed to the inside of the tip of the right guide rail (75) of the tray (14), and the screw (82) is brought into contact with the guide body (79). To prevent the tray (14) from detaching from the frame (15), and to prevent the tray (14) from leaving the left guide rail (7).
4) A guide projection (83), which is a guide member, is integrally formed at the tip, and the guide projection (83) is slidably fitted into the guide groove (76), and is guided into the guide groove (76). The guide rail (74) is configured to be loosely fitted and supported via the projection (83).

As shown in FIG. 16, a guide roller (85) as a guide member is provided at the tip of the left guide rail (74) via a support shaft (84) in place of the guide protrusion (83). 85) can be slidably fitted into the guide groove (76), and the guide rail (74) can be loosely supported by the guide groove (76).

A guide member (83) (85) having a width substantially equal to the groove width of the guide groove (76) is provided at only one end of the guide rail (74) of the left and right guide rails (74) and (75). The rail (75) is uniformly formed to have the same width, and the guide groove (77) of the guide rail (75) on the side not having the guide members (83) and (85) is longer than the other guide groove (76). It is formed sufficiently short.

In this embodiment, the disk (4) is placed on the disk mounting portion (20) with the tray (14) retracted as shown in FIG. By pushing and inserting the tray (14), the eject arm (16) comes into pressure contact with the end of the rail extension (80), and the boss (34) engages with the lock arm (13) as shown in FIG. Then, the disk mounting switch (37) is turned on via the switch arm (35), and the disk mounting motor (41) is turned on.
To rotate the drive arm (42) via the sliding gear portion (47) of the rack gear (49) as shown in FIG. 11, and as shown in FIG. 12, the rotating gear portion of the rack gear (49). The drive arm (42) is rotated through (48) and the tray (14)
Put the disc holders (22) (22) on both sides into the arm (42)
, The disc (4) supported by the holder (22) is lowered, and the disc (4) is placed on the turntable (5). The upward tongue (66) of the lifting arm (61) is disengaged from the downward tongue (65) of the chuck arm (9) by the rotation of the drive arm (42), and the spring (11)
Then, the chuck arm (9) is rotated, the chuck plate (12) is lowered, the disk (4) is clamped between the plate (12) and the turntable (5), and the disk (4) is reproduced. .

Also, by operating the eject button (57) to turn on the eject switch (58) and rotating the motor (41) in reverse, the drive arm (42) is rotated in reverse, and the downward tongue (65) of the chuck arm (9) is rotated. Lifting arm (61)
Lay the upward tongue piece (66) on the chuck plate (1
2) is raised, and the disk holder (22) is rotated by the leaf spring (26), and the disk (4) is lifted and supported by the holder (22).

Then, due to the sliding return operation of the drive arm (42), the lock release lever (67) comes into contact with the lock arm (31), disengages the lock arm (31) from the boss (34), and releases the spring of the eject arm (16). (18) The tray (14) is pushed out by force, and the disc (4) is replaced.

When the power is turned off in the state shown in FIGS. 1 and 10, the rod-shaped body (40) is inserted into the ejection holes (38) (39) as shown in FIG. By pressing the stopper (33), the lock arm (31) is released from the boss (34), and the tray (14) is pressed by the force of the spring (18).
Is to leave.

[Effects of the Invention] As is clear from the above embodiment, the present invention provides left and right guide rails (74) and (75) on both sides of the tray (14) having the disc mounting portion (20), A guide groove (76) (77) for slidingly guiding the 74 (75) is provided on the machine side to support the tray (14) slidably. A guide member (83) (85) having a width substantially equal to the width of the guide groove (76) is provided only at one end of the guide rail (74), and the other guide rail (75) is uniformly formed to have the same width. Along with
The guide groove (77) of the guide rail (75) on the side not having the guide members (83) and (85) is formed sufficiently shorter than the length of the other guide groove (76). ) Is such that the guide members (83) and (85) at this end only make line contact with the guide groove (76), and the other guide rail (75) makes surface contact with the guide groove (77), but the guide groove (77) 77) is formed to be sufficiently shorter than the length of the other guide groove (76), so that no extra contact resistance is generated, the input / output operation force of the tray (14) can be reduced, and when the tray (14) is inserted. By swinging the tray (14) right and left around the guide members (83) and (85) that are in line contact with the guide groove (76), the guide groove (76) and the guide rail (74)
Even if the gap at the end is small, one guide rail (74) can be easily inserted into the guide groove (76) and the tray (1
After the insertion of 4), the tray (14) remains the guide member (83) (85)
Can be swung around, but in this case the tray (14)
The guide members (83) and (85) serving as swing fulcrum of the other, the other guide rail (75) for regulating swing and the guide groove (7)
7) Since the distance from the surface contact part is sufficiently long, the swing angle of the tray (14) becomes very small, and the play of the tray (14) can be suppressed to a degree that does not cause a problem in use. Is played.

[Brief description of the drawings]

1 is an overall plan view showing an embodiment of the present invention, FIG. 2 is a perspective view, FIG. 3 is a front view, FIG. 4 is a sectional side view, and FIG.
FIG. 6 is a plan view of the tray, FIG. 6 is a bottom view thereof, FIG. 7 is a sectional side view thereof, FIG. 8 is a sectional rear view thereof, FIG.
FIG. 10 is a partial view of the rear surface of the chassis, FIGS. 11 to 13 are operation explanatory views of the previous figure, FIG. 14 is a plan explanatory view of the tray support,
FIG. 15 is a partial view showing the same, and FIG. 16 is a partial view showing a modification of the previous figure. (14) Tray (20) Disc loading part (74) (75) Guide rail (76) (77) Guide groove (83) Guide protrusion (guide member) (85) …… Guide roller (guide member)

Claims (1)

(57) [Scope of request for utility model registration] A tray (1) having a disc mounting portion (20);
4) Right and left guide rails (74) and (75) are provided on both sides, and guide grooves (76) and (77) for slidingly guiding the left and right guide rails (74) and (75) are provided on the machine side. 1
4) In a device for slidably supporting the guide member (83), a guide member (83) having a width substantially equal to the groove width of the guide groove (76) is provided only at the end of one of the left and right guide rails (74) and (75). ) And (85), the other guide rail (75) is uniformly formed to have the same width, and the guide members (83) (8)
5) Guide groove (7) of guide rail (75) on the side without
7) A disc mounting device for a disc player, wherein the length is formed sufficiently shorter than the length of the other guide groove (76).