JPH0646474B2 - 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 Conventionally, when a disc is clamped on a turntable at a disc playing position, an automatic disc mounting device that lowers the disc mounting portion to mount the disc on the turntable is JP-A-56-581
No. 67 publication. However, with this device,
Since the disc mounting portion is moved up and down based on the horizontal movement of the disc carrier, in order to move the disc mounting portion up and down, a device for moving the disc mounting portion up and down is provided. In addition, a device for moving the disk mounting portion in the left-right direction is required, which complicates the configuration and invites an increase in the size of the device.

(C) Problems to be Solved by the Invention The present invention has been made in consideration of the above points, and the disk mounting portion can be provided with a simple structure, and the movement of the clamping means can be easily controlled. An automatic disc loading device is provided.

(D) Means for Solving the Problems An automatic disc mounting apparatus according to the present invention comprises a turntable for rotationally driving a disc, a disc mounting position for mounting the disc, and a playing position for rotationally driving the disc by the turntable. A disk carrier movably supported between the disk carrier, a disk mounting portion vertically movable on the disk carrier, and the disk on a turntable when the carrier moves to the playing position. Clamping means rotatably supported for clamping and sliding engagement with the clamping means in relation to movement of the carrier,
It is characterized by comprising drive means for changing the sliding operation into rotation operation of the clamp means, and interlocking means for vertically moving the disk mounting portion based on the vertical movement due to the rotation of the clamp means.

(E) Action The present invention is configured as described above, in which the disk mounting portion is moved up and down based on the vertical movement of the clamp means, and the clamp means is rotated by the drive means. become.

(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 (41) of this clamp (4)
(41) Rotating claws (42) and (42) are provided at the tip of the rotating claw.
(42) and (42) are always arranged within the movement radius of the timing means (31) and (31) so that they can come into contact with the timing means (31) and (31) of the gears (3) and (3). 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 facts, the clamp means (4) has the shaft rod (47) as a fulcrum, the timing means (31) (31) abutting portion of the rotating claws (42) (42) is the power point, and the pressing pieces (43) (43). Is the point of action. In addition, the clamp means (4) is behind the shaft rod (47), and the pressing pieces (43) and (43) are normally positioned above the carrier (1) by a spring (45) for the chassis ((46)). It is pulled in position.

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), a protrusion (15) provided on the rack (14) or a claw in the vicinity thereof is provided on the bottom surface of the frame body (12) or the like. If the engaging projections (37) that can come into contact with the member (3) are provided, the teeth engage with each other while pushing the rack (14) as the gear (3) rotates, so that they are always engaged 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 According to the present invention, as described above, the interlocking means moves the disc mounting portion up and down based on the vertical movement of the clamping means, so that the disc mounting portion can move in one direction. It is sufficient to provide the disk carrier as described above, and the configuration can be simplified and the shape of the disk carrier can be miniaturized. or,
The driving means for slidingly engaging the rotatably supported clamp means converts the sliding motion into the rotary motion of the clamp means, and the clamp means is driven by a combination of a rack and a gear. Technical inconvenience such as gear lock can be avoided, and conversely, fine precision for avoiding such inconvenience is not required and the structure can be simplified.

[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 disc, a disc carrier movably supported between a disc mounting position for mounting the disc and a performance position for rotationally driving the disc by the turntable, and A disk mounting portion provided on the disk carrier so as to be vertically movable; and a clamp means rotatably supported so as to clamp the disk on a turntable when the carrier moves to the performance position. Drive means for moving in conjunction with the movement of the carrier and for slidingly engaging with the clamp means during the moving operation, and changing the sliding operation into a rotating operation of the clamp means; An automatic disc mounting device comprising: interlocking means for vertically moving the disk mounting portion based on vertical movement of the clamping means.