JP2534123Y2 - Disc mounting device for disc players - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk mounting apparatus for a disk player in which a tray on which a disk is placed is inserted horizontally on a turntable, and then the tray holder is lowered vertically to support the disk on the turntable. .

[0002]

2. Description of the Related Art Conventionally, a tray holder is provided between the left and right side walls of a chassis, and a cam plate is provided between the left and right side walls of the chassis and the left and right side walls of the tray holder. The tray holder is raised and lowered vertically by moving the cam plate back and forth through vertical guide holes formed on the left and right side walls of the chassis through inclined guide holes formed in the cam plate.

[0003]

In the prior art, the clearance between the left and right side walls of the chassis and the cam plate and the clearance between the cam plate and the left and right side walls of the tray holder are reduced as much as possible to prevent the tray holder from rattling. Therefore, unless the dimensional accuracy of the chassis, cam plate, and tray holder is increased, the left and right play will increase and the camera will not move. there were.

[0004]

According to the present invention, a tray holder is provided between the left and right side walls of the chassis and a cam plate is provided between the left and right side walls of the chassis and the left and right side walls of the tray holder. A disc player in which a guide pin projecting outward is inserted into a vertical guide hole formed in the left and right side walls of the chassis through an inclined guide hole formed in the cam plate, and the tray holder is moved up and down by moving the cam plate back and forth. In the disk mounting device, a pair of flanges having a gap obtained by adding a gap required for the thickness of the left and right side walls of the chassis and a slide are formed on the outer peripheral surface of the tip of the guide pin on the left or right side of the tray holder,
The guide pin between the flanges is moved up and down in the vertical guide hole, and the left and right play of the tray holder is stopped only by the dimensional control of the specific part, and the operation of the tray holder can be stabilized, and the dimensional control of each part can be easily performed. It is something that can be done.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an entire tray removable disk player, in which a tray (2) for mounting a disk (1) is provided separately from a player body (2), and the tray (2) is formed in a substantially square flat plate shape. doing.

In a case (4) of the player body (3), a tray holder (5) for accommodating a tray (2), a chassis (6) for mounting the holder (5), and a disk (1) are rotated. Various drive mechanisms including an electric motor and various components, including a turntable (7), a pickup (8) for reading recorded information on the disc (1), a chassis (9) for mounting the turntable (7) and the pickup (8), and the like. When a tray (2) on which a disc (1) is mounted and a disc (1) is inserted into the holder (5), the holder (5) is lowered and the disc (1) is placed on the turntable (7). The disc (1) is chucked on the turntable (7) by the chuck provided on the chuck plate (10) which is supported and descends in synchronization with the holder (5). When playback operation by the data,
The turntable (7) rotates to rotate the disk (1), and the pickup (8) moves in the diameter direction of the disk (1) to reproduce the information recorded on the disk (1). .

[0007] The above-mentioned disc player detaches the tray (2) manually or by an automatic disc exchanging device, and a notch (11) for the automatic exchanging device is formed substantially at the center of the front edge of the tray (2). In addition, the holder (5) has a structure in which two trays (2) can be accommodated in two upper and lower tiers in order to shorten the time for automatically changing the disc (1).

The disc (1) is a combination of two discs, information is recorded on both sides, and the pickup (8) is mounted on the disc (1) to correspond to the disc (1). The upper and lower surfaces of the disk (1) can move in the diameter direction of the disk (1).

FIG. 2 is an explanatory plan view of the tray accommodating portion, FIG. 3 is an explanatory front view thereof, and FIG. 4 is an explanatory side view thereof. Tray guide grooves (12) for connecting the left and right side edges of the tray (2) to the inner surface of each guide frame (12). A tray guide rail (15) made of synthetic resin is provided to form (14) in two upper and lower stages.

The tray (2) and each guide groove (14)
Each guide groove (1
4) A guide rail (15) that sets the height and depth and projects from the front end of the guide frame (12).
The entrance (15a) at the front end is enlarged in the left-right and up-down directions from the rear, and the tray (2) at the entrance (16) is formed.
The margin between the guide groove (14) and the guide groove (14) is made larger than the margin on the rear side thereof, so that the tray (2) can be easily attached and detached.

The holder (5) is provided between the left and right side walls (6a) and (6b) of the chassis (6) for fixing the holder (5) to the case (4), and the left and right side walls (6a) of the chassis (6) are provided.
A cam plate (17) is provided between the left and right side walls (5a) and (5b) of the holder (5) and the left and right side walls (5) of the holder (5).
a) Front and rear guide pins (1) projecting outward from (5b)
8) penetrate through the front and rear inclined guide holes (19) formed in the cam plate (17) and pass through the left and right side walls (6) of the chassis (6).
a) The holder (5) is inserted into a vertical guide hole (20) formed in (6b), and is moved up and down by moving the cam plate (17) back and forth.

Horizontal guide holes (21) and (22) are communicatively connected to the upper and lower ends of the inclined guide hole (19), and the guide pin (18) is connected to the upper horizontal guide hole (2).
1), the holder (5) is supported at a raised position for supporting the tray (2) at a position higher than the turntable (7), and the guide pin (18) is positioned at the lower horizontal guide hole ( 22), the holder (5) is supported at a lower position where the tray (2) is supported at a position lower than the turntable (7).

The chuck arm (10) is also supported in the same manner as the holder (5), and is provided between the left and right side walls (5a) and (5b) of the holder (5) and the cam plate (17) from above. 10) Left and right side walls (10a) (10b)
And hang down the left and right side walls (10) of the chuck arm (10).
a) The front and rear guide pins (23) projecting outward from (10b) are inserted into front and rear inclined guide holes (24) formed in the cam plate (17), and the front guide pins (2) are inserted.
3) is inserted into the vertical guide holes (25) formed in the left and right side walls (6a) and (6b) of the chassis (6) through the front inclined guide holes (24) of the cam plate (17). )
The chuck arm (10) is moved up and down in synchronization with the holder (5) by the front-back movement of the chuck arm (5).

Further, horizontal guide holes (26) and (27) are connected to the inclined upper and lower ends of the inclined guide hole (24), and the guide pin (23) is connected to the lower horizontal guide hole (2).
7) Positioning the turntable (7)
The chuck arm (10) is supported at a lower position for chucking the disc (1), and the guide pin (2) is supported.
By positioning 3) in the upper horizontal guide hole (26), the chuck arm (10) is supported at an ascending position where chucking is released.

The front and rear guide pins (28) projecting from the outer side surface of the cam plate (17) are inserted into front and rear horizontal guide holes (29) formed in the lower portions of the left and right side walls (6a) and (6b) of the chassis (6). The cam plate (17) is supported on the left and right side walls (6a) and (6b) of the chassis (6) so as to be movable back and forth, and the holder lifting / lowering D is provided on the bottom surface (6c) of the chassis (6).
The C motor (30) is fixed and the left cam plate (1
7) A rack gear (31) is fixedly mounted on the inner surface side, and a gear (32) provided on the rotating shaft of the DC motor (30) is interlocked via a transmission mechanism (not shown) including a plurality of gears, cams, clutches, and the like. The left cam plate (17) is connected and moved in the front-rear direction.

An operation arm (34) for rotatably supporting an intermediate portion is provided on a support shaft (33) projecting from the bottom surface (6c) of the chassis (6), and an inner surface of the left cam plate (17) is provided. One end of the operation arm (34) is connected to the left arm (35) to be further protruded through the long hole (36) and the locking pin (37), and the right arm protruded from the inner surface of the right cam plate (17). Operation arm (34) on arm (38)
Is connected via a long hole (39) and a locking pin (40), and an operation arm (34) is inclinedly extended between the left and right cam plates (17). The right and left cam plates (17) are moved in the opposite direction to the left cam plate (17) by swinging the operation arm (34) about the support shaft (33) by the forward and backward movement of ()). ing.

The inclination guide holes (19) and (24) of the right cam plate (17) are formed so that the inclinations thereof are opposite to the inclination guide holes (19) and (24) of the left cam plate (17). I have.

FIG. 5 is an explanatory view of the right and left play preventing structure of the holder (5). The left and right side walls (6a) of the chassis (6) are provided on the outer peripheral surface of the tip of the left or right guide pin (18) of the holder (5). ) The gap (T) (t1 +) obtained by adding the plate thickness (t1) of (6b) and the gap (G) (G1 + G2) necessary for sliding.
G), a pair of flanges (41a) and (41b) having opposite shapes are formed.
b) Left or right side wall (6a) (6b) of chassis (6)
, The guide pin (18a) between the flanges (41a) and (41b) is moved up and down in the vertical guide hole (20), and the right and left play of the holder (5) is performed only by controlling the dimensions of the flanges (41a) and (41b). It is configured so that the operation of the holder (5) can be stabilized and the dimensions of the parts such as the holder (5), the chassis (6), and the cam plate (17) can be easily controlled. ing.

The flanges (41a) and (41b) are alternatively formed on the left or right front and rear guide pins (18) of the holder (5), and are formed on the left side wall (6) of the chassis (6).
When a) serves as a reference plane for elevating the holder (5), the flanges (41a) and (41b) are attached to the left side wall (5) of the holder (5).
When the right side wall (6b) of the chassis (6) is formed on the front and rear guide pins (18) and serves as a reference surface for elevating the holder (5), the flanges (41a) and (41b) are connected to the holder (5). On the front and rear guide pins (18) of the right side wall (5a).

Therefore, the flanges (41a) (41)
If there is no b), the left and right side walls (6
a) The gap between the cam plate (17) and the cam plate (17) and the gap between the cam plate (17) and the left and right side walls (5a) and (5b) of the holder (5) are reduced as much as possible, so that the right and left play of the holder (5) is reduced. It is necessary to stop, so that the dimensional accuracy of the chassis (6), the cam plate (17), and the holder (5) must be increased.
Even if the right and left play of the holder (5) is not allowed to increase or conversely move, even if the dimensional accuracy of each part is improved, the right and left play of the holder (5) is a gap required for sliding of each part. , But the above-mentioned flange (41a)
Due to the presence of (41b), the left and right play of the holder (5) occurs only for the gap (G) between the flanges (41a) (41b) and the left or right side walls (6a) (6b) of the chassis (6). ing.

FIG. 6 is an explanatory plan view of the positioning structure of the tray (2), and FIG. 7 is an explanatory side view of the same. A concave portion (42) is provided on the left and right side edges of the tray (2), and FIG. The line (Y-Y ') connecting the notch centers of the left and right recesses (42) shown in FIG. 4 passes through the center (O) of the disc (1) placed on the tray (2). ) And arcuate elastic bodies (4) for holding the tray (2) from the left and right outer sides in each guide groove (14) of the guide rail (15).
8), the elastic member (4) is formed to have an arc diameter larger than the notch length (L) of the concave portion (42) as shown in FIG.
3) is formed, and a line (XX ') connecting the arc centers (P) of the left and right elastic bodies (43) coincides with the line (YY') when the tray (2) is mounted. Positions and left and right elastic bodies (43) are provided.
2) The elastic body (43) is fitted to the elastic body (43), and the elastic body (43) is brought into contact with the corners (42a) and (42a) of the concave portion (42).
The tray (2) is configured to perform positioning in the front-rear direction at four points.

The elastic member (43) has a U-shaped cut groove (44) formed on the side wall of each guide groove (14) at an intermediate portion of the guide rail (15). When the elastic body (43) is in contact with the left and right side edges other than the concave portion (42) of the tray (2), the elastic piece (43) is formed by projecting from the tip of the piece (45) into the guide groove (14). The elastic body (43) retreats from the inside of the guide groove (14) to the outside due to the curve of (45), and the elastic body (43) fits into the recess (42) by the return of the elastic piece (45) when the tray (2) is mounted. It is configured to be.

Further, the recesses (4) are sandwiched between the cut grooves (44).
The left and right positioning ribs (46) are formed in the guide grooves (14) at the intermediate portions of the guide rails (15) on the opposite side to 3) so as to protrude into the respective guide grooves (14) from the side wall ends of the respective guide grooves (14). Is configured to perform positioning in the left-right direction.

Therefore, when the tray (2) is lowered, for example, when the boss provided on the chassis (6) is fitted into the positioning hole provided on the tray (2) to position the tray (2). Since there is a margin between the tray (2) and the guide groove (14), the fitting may not be completed unless the accuracy of the positioning holes and the boss and the elevation accuracy of the holder (5) are increased. When the positioning holes slide on the boss, stick-slip occurs and the tray (2)
There is a problem that the tray (2) descends while rattling, but there is a margin between the tray (2) and the guide groove (14) to position the tray (2) directly between the holder (5). The tray (2) can be easily attached and detached as before, without allowing the tray (2) to be reliably positioned and without loosing a margin between the tray (2) and the guide groove (14). .

Further, since the tray (2) is positioned at the position closest to the center of the disk (1), the tray (2) becomes inclined due to the margin with the guide groove (14), and an angle shift occurs. Even in this case, the center (O) of the disk (1) hardly shifts in position, and can be returned to a predetermined position when the disk (1) is positioned even after the shift.

FIG. 9 is an explanatory plan view of the tray detecting section, and FIG.
FIG. 9 is a view for explaining a tray detection operation. A switch frame (4) is provided at the rear end of the guide frame (12) on the left side of the holder (5).
7) Via the upper tray detection switch (48), the actuator (49) of this switch (48), the lower tray detection switch (50) and this switch (50)
Actuator (51) is mounted.

The upper switch (48) and the actuator (49) and the lower switch (50) and the actuator (51) are turned upside down so that the cross section of the switch frame (47) has a convex shape (47a). Since the structure and operation are the same only by being attached to the right and left side walls of the upper switch (48) and the actuator (4) for the upper stage,
9) will be described, and the description of the lower switch (51) and the actuator (50) will be omitted.

The switch (48) is attached to the rear of the right side of the zigzag part (47a) of the switch frame (47), and the switch lever (48a) protrudes from the front lower surface of the switch (48).

The actuator (49) is rotatably supported at its intermediate portion via a support shaft (52) to a front portion on the right side of the zigzag portion (47a) of the switch frame (47). A contact portion (54) is formed at the tip of the front arm (53) so as to abut on the end surface of the tray (2) so as to ride on the upper surface of the tray (2), and the contact portion (54) is formed by the guide frame (12) and the guide. A tray (2) is attached to a stopper (55) formed by bending the end of the rail (15) inward.
A cam which is provided at a position where it comes into contact with the tray (2) immediately before the insertion end of the actuator comes into contact with the tray (2), and which is a switch pressing arc portion which presses a lever (48a) of a switch (48) on the rear end surface of the actuator (49). The cam surface (56) is formed on a circumference having a diameter wrapped around the lever (48a) of the switch (48) on a circumference centered on the support shaft (52). Even if the lever (48a) of the switch (48) comes into contact with any position of (56), the stroke of pressing the lever (48a) is not changed.

As shown in FIG. 10 (a), when the tray (2) is not in contact with the actuator (49) in the tray non-detection state, the actuator (49) includes the return spring (57) and the stopper. By (58), the cam surface (56) is supported at a turning position located above the lever (48a) of the switch (48). That is, the switch (4
8) The lever (48a) is not pushed by the cam surface (56), and the switch (48) is in the off state.

When the tray (2) is inserted as shown in FIGS. 10 (a), (b) and (c), the contact portion (5) of the actuator (49) immediately before the end of the insertion stroke.
4) rides on the upper surface of the tray (2), and the return spring (5)
The entire actuator (49) is opposed to the cam surface (5) against 7).
6) is turned downward, and the lever (48a) of the switch (48) is pressed by the cam surface (56), and the switch (4) is pressed.
8) is turned on.

Since there is a margin between the tray (2) and the guide groove (14) as shown in FIGS. 10 (b) and (c), the guide groove (14) is formed as shown in FIG. 10 (b). When the tray (2) is inserted in a proper state in which the lower surface of the tray (2) is in contact with the bottom surface of the tray (2), as shown in FIG. The amount of rotational displacement of the actuator (49) is different between the case where the tray (2) is inserted in an inappropriate state where
As described above, the cam surface (56) of the actuator (49) pressing the lever (48a) of the switch (48) keeps the lever (48a) of the switch (48) constant regardless of the amount of rotational displacement of the actuator (49). , The switch (48) is properly turned on or off at a fixed timing even when the tray (2) is mounted on the holder (5) in an appropriate state or an inappropriate state. You can do it.

That is, the switch (4) is directly connected to the tray (2).
8) When the tray is detected by pressing the lever (48a), the case where the tray (2) is mounted on the holder (5) in an appropriate state, and the case where the tray (2) is improperly mounted on the holder (5). ) Does not allow the switch (48) to operate incorrectly or not, and the return force is applied to the lever (48a) of the switch (48). When the tray (2) rattles, the switch (48), which has been turned on once, is turned off, and the returning force of the lever (48a) acts as a force for displacing the tray (2). Since the switch (48) is operated via the actuator (49), the detection operation of the tray (2) can be stabilized, and the return force of the actuator (49) shifts the tray (2). Do not act as that force is to a adversely affecting the positioning of the tray (2) can be prevented.

1, 2 and 6, only the appearance of the tray (2) is shown for convenience, and the entire tray (2) is shown in FIG.

FIG. 11 is a plan view of the tray (2). The outer edge other than the notch (11) and the recess (42) of the square iron plate having the notch (11) and the recess (42) is made of synthetic resin. The metal plate is fitted with an edge cover (59), and the metal plate is punched out of all excess portions to reduce the weight, and a large number of holes are formed. In addition to the holes, a turntable ( A hole (60) for inserting the same (7) is formed, and a trapezoidal concave portion (61) for the pickup (8) is provided from the middle of the insertion edge (rear edge) to the vicinity of the center.

A C-shaped rib (62) made of synthetic resin and having an upper surface substantially flush with the upper surface of the edge cover (59) is attached to the outer periphery of the hole (60) on the upper surface of the iron plate.
A plurality of ribs (63) are integrally formed on the upper surface of the iron plate from the edge cover (59), and the center of the lower surface of the disk (1) is formed by the rib (6).
2), and the outer peripheral edge of the disk (1) is
Supported in 3).

The disk (1) is positioned by a wall (64) projecting from the upper surface of each rib (63) on the same circumference having a diameter slightly longer than the disk diameter.

[0038]

As is apparent from the above embodiment, the present invention provides a tray holder (5) between left and right side walls (6a) and (6b) of a chassis (6), and a left and right side wall (6a) of a chassis (6). ) (6b) and a cam plate (17) provided between the left and right side walls (5a) and (5b) of the tray holder (5), and a guide pin projecting outward from the left and right side walls (5a) and (5b) of the tray holder (5). (18) is passed through the inclined guide hole (19) formed in the cam plate (17) and the chassis (6)
In the disk mounting device of the disk player, the tray holder (5) is inserted into the vertical guide holes (20) formed in the left and right side walls (6a) and (6b) and moved up and down by moving the cam plate (17) back and forth. Tray holder (5)
A gap obtained by adding the thickness (t) of the left or right side wall (6a) (6b) of the chassis (6) and the gap (G) necessary for sliding to the outer peripheral surface of the left or right guide pin (18) of the left or right side. (T), a pair of flanges (41a) and (41b) are formed to face each other, and the guide pin (18a) between the flanges (41a) and (41b) is moved up and down in the vertical guide hole (20). Because of the configuration, the flange (4
Left and right play of the tray holder (5) can be stopped only by controlling the dimensions of specific parts such as 1a) and (41b), and the operation of the tray holder (5) can be stabilized.
Tray holder (5), chassis (6), cam plate (17)
It has a remarkable effect such as easy management of dimensions of each part.

[Brief description of the drawings]

FIG. 1 is a plan view of an entire tray removable disk player.

FIG. 2 is an explanatory plan view of a tray housing unit.

FIG. 3 is an explanatory front view of a tray housing unit.

FIG. 4 is an explanatory side view of a tray housing unit.

FIG. 5 is an explanatory view of a left and right play preventing structure of a holder.

FIG. 6 is an explanatory plan view of a tray positioning structure.

FIG. 7 is an explanatory side view of a tray positioning structure.

FIG. 8 is a partially enlarged explanatory view of a tray positioning structure.

FIG. 9 is an explanatory plan view of a tray detection unit.

FIG. 10 is an explanatory diagram of a tray detection operation.

FIG. 11 is a plan view of a tray.

[Explanation of symbols]

 (1) Disc (2) Tray (3) Player body (5) Tray holder (6) Chassis (7) Turntable (8) Pickup (17) Cam plate (18) Guide pin (19) Inclined guide hole (Cam plate) (20) Inclined guide hole (of chassis) (41a) (41b) Flange

Claims (1)

(57) [Scope of request for utility model registration] A tray is provided between left and right side walls of a chassis, and a cam plate is provided between left and right side walls of the chassis and the left and right side walls of the tray holder. In the disc loading device of the disc player, the tray guide is formed by penetrating the inclined guide hole formed in the right and left side walls of the chassis and inserting the same into the vertical guide holes formed on the left and right side walls of the chassis so that the tray moves up and down by moving the cam plate back and forth. Alternatively, a pair of flanges having a gap obtained by adding a gap necessary for sliding and the thickness of the left and right side walls of the chassis are formed on the outer peripheral surface of the right end of the guide pin tip, and a guide pin between the flanges is formed in a vertical guide hole. A disk mounting device for a disk player, characterized in that the disk mounting device is configured to be moved up and down within the disk player.