JPH0646473B2 - Automatic disc loading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an automatic disk mounting apparatus having a relatively simple structure and robustness.

Further, the present invention relates to an automatic disc loading device which is applied when a pull-out type disc carrier is used for carrying a disc in a disc reproducing device for reading music written on the disc with a laser beam or the like.

(B) Conventional technology In a conventional so-called pull-out type disc mounting device, the disc carrier and the clamping means move substantially orthogonally,
Since it is difficult to match the timing of both, it has changed from using two independent drive systems to a single drive system.

For example, Japanese Patent Application Laid-Open No. 57-88560 (G11B 17/04) discloses a side plate having a crank groove for driving a carrier, and a clamp operation is performed by moving a guide pin in the crank groove. There is. However, if the crank groove is steeply inclined, the drive gear, etc. will be overloaded and it will not work due to biting, or the pin may even be broken. It may move and damage the disc, causing mechanical troubles.

Further, in Japanese Patent Application Laid-Open No. 58-14366, there is disclosed a method in which a mounting table nut and a clamping nut are attached to a feed screw and clamped after the mounting table has finished sliding. However, since the feed screw system has a strong force, if it is rotated too much, the disc is easily damaged, and a crank or the like for moving up and down by horizontal feed is a three-dimensionally large device, which is not preferable.

Furthermore, since these devices tend to move in the vertical direction only by the driving force in the horizontal direction, they require many mechanical parts such as a plate-like body, are difficult to assemble, are expensive, and have a high failure rate. high.

(C) Problems to be Solved by the Invention The present invention has been made in view of the above points, and provides an automatic disk mounting apparatus that has relatively few components and does not cause timing errors.

(D) Means for Solving the Problems An automatic disc mounting apparatus according to the present invention includes a turntable that rotationally drives the disc, a disc mounting portion that mounts the disc, and the disc mounting portion includes the disc. A disc transporter that is movably supported between a disc mounting position for mounting a disc and a playing position in which the disc mounted on the disc mounting portion is driven to rotate by the turntable, and forms a rack over the moving direction. A body, and a clamp means rotatably supported so as to move to a position where the disk mounted on the disk mounting portion is rotatably clamped on the turntable and a position where the holding is released. , A gear meshing with a rack of the disk carrier, and a sliding engagement with the clamp means in association with the rotation of the gear to clamp the sliding operation. And timing means for converting the rotational motion of the stage, characterized by comprising a single rotary drive unit for rotationally driving the gear and timing means.

(E) Action Since the clamp means can be rotated integrally with the operation of the gear, no timing error occurs and the device does not become large.

(F) Embodiment FIGS. 1 to 3 are views of an automatic disk mounting apparatus according to an embodiment of the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b), and FIG.
FIG. 3 and FIG. 3 are cross-sectional views in the case where the disc carrier is delivered, the carrier is retracted, and the disc is in a reproducible state (playing state), and FIG. 1 (c) is an explanatory diagram of a gear meshing state.

In the figure, (1) is a disc carrier that can slide back and forth, and the mounting part (11) of the carrier (1) is a frame (12) with a spring (13).
It is urged upwards by (13) ..., and is supported so that it is higher than the turntable (2) at the time of ejecting (disk mounting position), and it is slidable below both sides of the frame (12). Racks (14) (14) are provided. (3) (3) is a timing means (31) (31) for driving the carrier (1) and comprising timing pins
Is a partial gear having a gear portion on the circumference and meshes with the racks (14) and (14). The gears (3) (3) are driven by a plurality of reduction gears (34) (34) ... (35) (35) which mesh with the rotary shaft (33) of one motor (32), Of the reduction gears, low speed gears (35) (35)
The gears (35) (35) and the rotary shaft (3
6) is coaxially fixed so that it rotates together.

(4) is a clinging body (clamping means), which is made of sheet metal or the like having arm portions (41) and (41) on both sides, and the V-shaped bent portion is a shaft rod (47).
Is supported by. Also, the arm of this clamping means (4)
Rotating claws (42) and (42) are provided at the tips of (41) and (41), and these rotating claws (42) and (42) are timing means (31) and (31) for the gears (3) and (3).
It is always arranged within the movement radius of the timing means (31) (31) so that it can come into contact with. Also, push-down pieces (43) (43) for pushing down the mounting table (1) downwardly are provided on both sides of the plate-like portion of the clamp means (4), and at a position corresponding to the turntable (2) in the center. A center cap (44) is provided. From these things, the clamp means (4) is supported by the shaft rod (47) and the rotation claws (42) (42).
Timing means (31) (31) The contact point is the force point, the pressing piece (43)
(43) is the point of action. Clamping means
(4) is pulled to the position of the chassis (46) by the spring (45) so that the push-down pieces (43) and (43) are usually located above the carrier (1) behind the shaft rod (47). ing.

The operation of the above configuration will be described. First, in the ejection (eject) state, as shown in FIG.
(43) (43) is above, the first gear of the partial gear of the gear (3) meshes with the first gear of the rack (14). In this state, even if the operator pushes part or the whole of the front surface of the carrier (1), the gears (3), (3), (34) and (34) are used to move the gears (35) (35)
The rotation amount of the rotary shaft (36) is exactly the same, and the carrier (1) is housed in the main body without being biased or tilted. At this time, if the high speed side of the reduction gear is used to coaxially support the left and right gears, a load is applied to the gears, which is not preferable.

During normal disk loading, a switch (not shown) is operated, so that the motor (32) is energized and starts to rotate. The rotation of the rotary shaft (33) of the motor (32) is controlled by the reduction gear (3
4) (34) ... (35) ... are transmitted to the gears (3) (3), so that the rack (14) is sent to the main body (5) side, and the carrier (1) is stored in the main body. It

When the tip of the carrier (1) is aligned with the front surface of the body (5) and the carrier (1) moves to a predetermined position (playing position) such that the center of the disc is the position of the turntable (2), Second
As shown, the last tooth of the rack (14) meshes with the last tooth of the partial gear of the gear (3). At this time, the timing means (31) (31) is located right above the rotating claws (42) (42). Further rotation of the gears (3) (3) causes the partial gear to disengage from the rack (14), while the timing pins (31) (31)
Contacts the rotating claws (42) (42) and pushes it down. Therefore, the clamp means (4) rotates, and the push-down pieces (43) (43) push down the placing portion (11) of the carrier (1). Then, as shown in FIG. 3, the surface of the mounting portion (11) is located below the surface of the turntable (2), and the center cap (44) is located on the turntable.
(2) Cover the top of the disc (not shown) with the center cap.
(44) and the turntable (2) are clamped, and the rotation of the motor (32) is stopped by a detection means (not shown) such as a limit switch.

The above is the loading operation of the disc, but the ejecting operation is the motor
(32) reverses to perform the above-mentioned reverse operation. However, the start of meshing between the partial gear of the gear (3) and the rack (14) may fail due to a timing shift. In this case, if the number of gears is a few, the feeding amount of the carrier (1) is small,
It is not preferable because it will not move if it gets caught. Therefore, as shown in FIG. 4, at the engagement start portion of the gear (3) with the rack (14), the projection (15) provided on the rack (14) or the claws or frame bodies (12) bottom surface in the vicinity of the projection (15), etc. If the engaging projections (37) that can come into contact with the member (3) are provided, the teeth mesh with each other while pushing the rack (14) as the gear (3) rotates, so that they are always meshed accurately.

As described above, according to the present invention, a carrier of a disc that can slide forward and backward, a gear that drives the carrier and has a timing pin, and a bent portion of which is pivotally supported in a substantially V-shaped side surface.
It is an automatic disc mounting apparatus that is provided with a sandwiching body, one end of which is rotated by contact with a timing pin of a gear, and the other end of which has a push-down piece that pushes down the disc mounting portion. It is simple, it is not damaged even if the operator directly pushes the carrier, and since the clasp uses a lever, the device is robust because it can be operated with a small force.

(G) Effect of the Invention Since the present invention moves and clamps the carrier by the gear and the timing means that are rotationally driven by the single rotational drive unit as described above, the configuration can be simplified and a failure can be prevented. The number of devices can be reduced and the size of the device itself can be reduced. Also, no timing error occurs. Since the timing means is slidably engaged with the clamp means in association with the rotation of the gear and converts the sliding motion into the rotary motion of the clamp means, the clamp means is combined with the rack and the gear. Since it is possible to avoid technical inconveniences such as gear locks like those driven, and conversely, precise precision is not required to avoid such inconveniences, therefore, for those that perform similar clamping operation in this way It will have a special effect. Further, since the disc carrier is moved by the combination of the rack and the gear, the gear and timing means can be fixedly provided with respect to the movement of the disc carrier, and as a result, the disc carrier moves to the disc mounting position. In this case, the clamping means can be prevented from moving to the disc mounting position in conjunction with the disc carrier, and the disc can be easily mounted without being disturbed by the clamping means.

[Brief description of drawings]

1 to 3 are views of an automatic disc mounting apparatus according to an embodiment of the present invention. FIG. 1 (a) is a plan view, and FIG. 1 (b), FIG. 2 and FIG. Sending out, pulling in the carrier,
Sectional view when the disc can be played (playing position), No. 1
FIG. 4C is an explanatory view of the meshed state of the gears, and FIG. 4 is a front view of the main parts of the gear and the rack. (1) …… Disk carrier, (11) …… Disk rest, (1
2) …… Frame, (13) (13) …… Spring, (14) (14) …… Rack, (2) …… Turntable, (3) …… Gear (for driving conveyor), ( 31) (31) …… Timing means, (32) …… Motor, (33) …… (motor's) rotating shaft,
(34) (34)… (35) (35) …… Reduction gear, (36) …… Rotary axis, (3
7) …… Mating projection, (4) …… Clamping body, (41) (41) …… Arm, (42) (42) …… Rotating claw, (43) (43) …… Pressing piece , (44) …… Center cap, (4
5) …… Spring, (46) …… Chassis, (47) …… Axis rod.

Claims (1)

[Claims] 1. A turntable for rotationally driving a disk, a disk mounting section for mounting the disk, and a disk mounting position for mounting the disk on the disk mounting section and a mounting section for the disk mounting section. A disc carrier which is movably supported between a playing position where the disc is driven to rotate by the turntable and which forms a rack in the moving direction; and a disc which is placed on the disc placing portion. Clamping means rotatably supported so as to move to a position where the turntable is rotatably driven and a position where the holding is released.
A gear that meshes with a rack of the disc carrier and a gear that is provided so as to rotate together with the gear and that is slidably engaged with the clamp means in association with the rotation of the gear and that performs a sliding operation by rotating the clamp means. An automatic disk mounting apparatus comprising: a timing means for converting into a dynamic operation; and a single rotary drive section for rotationally driving the gear and the timing means.