JP3044675B2 - Disc loading device - 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 loading device for performing a disk suction operation and a clamping operation by a single drive source.
The present invention relates to a disk loading device that mechanically detects the timing of switching between two operations.

[0002]

2. Description of the Related Art Generally, a disc loading device is
The operation of sucking the disk above the turntable from the insertion slot of the disk by the rotation of the transport roller and the clamping operation of fixing the disk on the turntable by the rotation of the clamper link are sequentially performed, thereby realizing the disk loading operation. doing. The ejecting operation of the disc is realized by performing the clamping operation in the reverse direction and subsequently performing the suction operation in the reverse direction.

Incidentally, a recent disk loading apparatus is provided with one drive source for performing a suction operation and a clamp operation in order to simplify the configuration. When such a disk loading device performs a disk loading operation, the drive source supplies a driving force to the transport roller during the disk suction operation, and the transport roller performs the suction operation. When the suction operation is completed, the transmission system of the driving force from the driving source is switched, the driving source supplies the driving force to the clamper, and the clamper starts the clamping operation.

In the above disk loading apparatus, in order to ensure excellent loading accuracy, the timing of switching between the two operations, that is, the time when the suction operation is completed, is accurately detected, and the drive from the driving source is reliably detected. It is necessary to switch the transmission system of the driving force. Therefore, conventionally, a plurality of light detection sensors for grasping the current position of the disk have been used to detect the suction operation completion, and an electromagnetic solenoid has been used to switch the driving force transmission system.

That is, when the disk is sucked to a predetermined position and the light detection sensor detects that the sucking operation has been completed, a detection signal is output to the electromagnetic solenoid, and the electromagnetic solenoid drives the driving force transmission system in accordance with the detection signal. , And the operation is reliably shifted from the suction operation to the clamp operation at an accurate timing.

[0006]

However, the following three problems have been pointed out in the above disk loading apparatus. First, the installation space for the electromagnetic solenoid is large, resulting in an increase in the size of the device. Second, since the photodetection sensor and the electromagnetic solenoid are expensive members, the manufacturing cost has increased. Third, in the above-described disc loading device, since the rotation of the transport roller is continued at the time of completion of suction, the rotating transport roller may damage the disk during the clamping operation.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above problems, and an object of the present invention is to switch the operation from sucking a disk to a clamp without using an electromagnetic solenoid. Accordingly, it is possible to provide a disk loading device which can contribute to downsizing of the device, is low in cost, and has high reliability and safety.

[0008]

In order to solve the above-mentioned problems, the present invention relates to a disk loading apparatus provided with a drive source, a transport roller for sucking a disk, and a clamper for clamping a disk. , A second gear that applies a clamping force to the clamper, a third gear that receives a rotational force from the drive source, and meshes with the third gear.
A gear unit selectively meshable with one of a gear and the second gear; a detecting unit that is pushed by the disk to move; and the gear unit and the first unit according to the movement of the detecting unit. The gear is held and released from one of the gear and the second gear, and the holding is released, and the movement of the gear means is guided while being controlled from the holding of the tooth until the release of the holding. And a cam member.

[0009]

The present invention having the above configuration operates as follows. First, when performing the suction operation of the disk, the gear means meshes the first gear with the third gear, and the cam member holds the mesh. Therefore, the driving force from the driving source is transmitted to the first gear via the third gear, and the first gear gives a rotational force to the transport roller. As a result, the transport roller rotates and sucks the disk.

When the disk is sucked by the transport roller, the disk pushes the detecting means, and the detecting means moves in the sucking direction. When the detecting means moves to a position where the suction operation of the disk is completed, the cam member releases the engagement between the first gear and the third gear in response to the movement, and shifts the gear with the second gear. The guide is performed while controlling the movement of the gear means so as to mesh with the third gear. When the gear means meshes the second gear and the third gear by the cam member performing such an operation, the cam member holds the mesh. As a result, the driving force from the driving source is transmitted to the second gear via the third gear, and the second gear applies a clamping force to the clamper. As a result, the clamper performs a clamping operation.

According to the present invention, when the disk suction operation is completed without using the light detection sensor or the electromagnetic solenoid, the transmission system of the driving force from the driving source is reliably switched to perform the clamping operation. be able to.

When the suction operation is completed, the first
Since the engagement between the third gear and the third gear has been released, the rotational force from the drive source is not supplied to the transport roller, and the transport roller is not rotating. Therefore, the rotating transport roller does not hit the disk during the clamping operation, and the disk is not likely to be damaged.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described with reference to FIGS. This embodiment is an apparatus for loading a disk d. 1 to 7 are side views, and in each figure, the X1 side shown in FIG. 2 is the left side, and the X2 side is the right side.

FIG. 1 shows a drive source and a gear group according to this embodiment. Reference numeral 1 denotes a drive motor as a drive source, and the drive motor 1 is provided with a motor gear 1a. The transmission gear 2 is disposed on the motor gear 1a. The transmission gear 2 has a large gear 2a and a small gear 2b coaxially, and the large gear 2a meshes with the motor gear 1a. A transmission gear 3 is disposed on the upper right side of the transmission gear 2 in the drawing. The transmission gear 3 has a large gear 3 a and a small gear 3 b on the same axis, and the large gear 3 a meshes with the small gear 2 b of the transmission gear 2. The transmission gears 2, 3 and the like constitute a "third gear" described in the claims.

Further, a substantially triangular power change plate 6 is provided adjacent to the transmission gear 3. At three apexes of the power change plate 6, the idler gear 4 is mounted on the left side, the idler gear 5 is mounted on the lower side, and the guide pin 6a is mounted on the right side. The idler gear 4 meshes with the large gear 3a of the transmission gear 3, and the idler gear 5 meshes with the small gear 3b of the transmission gear 3. The power change plate 6 having the idler gears 4 and 5 constitutes "gear means" described in claims.

A small-diameter power gear 7 is arranged near the idler gear 4. Power gear 7 is idler gear 4
The conveyance roller 8 is provided on the same axis. In other words, the power gear 7 serves as a “first gear” for applying a rotational force to the transport roller 8.

On the other hand, a large-diameter power gear 9 is arranged near the idler gear 5. The power gear 9 has a large gear 9 a and a small gear 9 b on the same axis, and the large gear 9 a can mesh with the idler gear 5. Further, as shown in FIG. 2, the small gear 9b is meshed with the rack 10. That is, the power gear 9 serves as a “second gear” according to the claims, which applies a clamping force to the clamper link 15 (shown in FIG. 6).

FIGS. 2 to 5 show a gear group excluding the transmission gear 2 and three plate members movable in the left-right direction. The three plate members are a shift plate 11, a detection plate 12, and a detect plate 13.

The shift plate 11 is a long member,
A rack 10 meshing with the small gear 9a of the power gear 9 is attached to the center of the side surface. Also, the shift plate 11
A cam pin 11a is provided on the upper right side in FIG. Further, a cam pin 11b is provided below the cam pin 11a.

The detection plate 12 is provided above the shift plate 11 and is means for detecting the completion of the suction operation of the disk d. At the right end of the detection plate 12, a disk pin 12a that can contact the disk d is attached. On the left side of the detection plate 12, a protruding portion 12b that protrudes laterally and is bent is formed. Further, a cam portion 12c that is inclined from upper left to lower right in the drawing is provided on the left side of the protruding portion 12b. The cam portion 12c is provided with a guide pin 6a of the power change plate 6.
Abut from the right side. A spring (not shown) is provided at the left end of the detection plate 12 to pull the detection plate 12 to the left.

The detect plate 13 is a means for controlling the power change plate 6 to regulate the position of the idler gears 4 and 5, and is provided above the shift plate 11 and below the detection plate 12. In the upper edge of the detect plate 13, a long hole 13 is provided at the right end.
a has a contact portion 1 in the center portion that contacts the protruding portion 12b.
3b, an r-shaped cam hole 13c is formed at the left end in the figure, which is inclined in the horizontal direction. The cam pin 11a of the shift plate 11 is inserted into the elongated hole 13a, and the guide pin 6 of the power change plate 6 is inserted into the cam hole 13c.
a is inserted.

A switch 14 is provided near the lower right side of the shift plate 11. This switch 14
Is pressed against the right side edge of the rack 10, and when this operation is performed, the drive motor 1 is stopped.

As shown in FIGS. 6 and 7, a clamper link 15 is provided above the shift plate 11 so that the distal end thereof can rotate vertically about a support shaft 15a. The clamper link 15 includes a clamper (not shown), and a cam portion 15b extending downward is provided at the center thereof, and the cam pin 11b of the shift plate 11 comes into contact with the cam portion 15b from the right side. ing. The clamper link 15 is urged by an elastic member (not shown) to rotate downward.

Next, the disc loading operation of this embodiment will be described. First, based on FIGS. 2 to 5, each operation of the gear group, the shift plate 11, the detection plate 12, and the detect plate 13, including the disk suction operation, will be described, and then the clamp operation will be described. .

As shown in FIG. 2, at the start of the suction operation of the disk d, the small gear 9b of the power gear 9 meshes with the right end of the rack 10, and the shift plate 11 is in a stopped state. At this time, the cam pin 11a of the shift plate 11 is in contact with the left end of the elongated hole 13a of the detect plate 13. Further, a spring (not shown) pulls the detection plate 12 to the left, and the protruding portion 12b is in contact with the contact portion 13b of the detect plate 13.

Further, the cam portion 12c of the detection plate 12 and the cam hole 13c of the detection plate 13
a is clamped from above and below to regulate the power change plate 6. Due to the regulation of the power change plate 6,
The idler gear 4 meshes with the power gear 7, and the idler gear 5 is separated from the power gear 9.

The drive motor 1 operates from such a state,
The rotational force is transmitted to the power gear 7 via the motor gear 1a, the transmission gears 2, 3 and the idler gear 4. Here, since the large gear 3a rotates counterclockwise, the power change plate 6 is also urged in the same direction, but the plate 6 is held at the position shown in FIG. Therefore, the power gear 7 rotates, and this rotation operation causes the conveying roller 8 to rotate.
Rotates, and the disk d is sucked.

As shown in FIG. 3, when the suction operation of the disk d by the transport roller 8 proceeds, the edge of the disk d abuts against the disk pin 12a of the detection plate 12 and pushes it. Therefore, the detection plate 12 moves in the suction direction against the elastic force of the spring (not shown). At this time, the protrusion 12b is
Away from the contact portion 13b.

With the movement of the detection plate 12, the cam 1
The restriction on the cam pin 6a by the 2c and the cam hole 13c is removed, and the power change plate 6 becomes rotatable.
Therefore, in a state where the cam portion 12c and the cam hole 13c sandwich the cam pin 6a from above and below, the cam pin 6a is
The power change plate 6 rises along the position c and the cam hole 13c, and rotates in the counterclockwise direction.

When the disk d is sucked above the turntable and moved to a position where the sucking operation is completed,
Due to the pressing of the disk d, the detection plate 12 moves to a predetermined position. At this time, the transmission system of the driving force from the driving motor 1 is switched. That is, when the detection plate 12 reaches the predetermined position, the idler gear 4 separates from the power gear 7 by the rotation of the power change plate 6, and the idler gear 5 meshes with the power gear 9.

As a result, the rotational force from the drive motor 1 is transmitted to the power gear 9 via the motor gear 1a, the transmission gears 2, 3 and the idler gear 5. Therefore, the rack 10 meshing with the small gear 9a of the power gear 9 moves rightward, and the shift plate 11 to which the rack 10 is attached also moves rightward. The clamp operation is started by the movement of the shift plate 11.

As shown in FIG. 4, as the shift plate 11 moves to the right, the cam pins 11a of the shift plate 11 press the right end of the elongated hole 13a of the detect plate 13, and Contact part 13b
Comes into contact with the protruding portion 12b of the detection plate 12 again.
When the cam pin 11a of the shift plate 11 pushes the end of the long hole 13a of the detect plate 13 rightward, the contact portion 13b pushes the projecting portion 12b rightward and opposes the elastic force of a spring (not shown). Then, the detection plate 12 is moved rightward. Therefore, the disk pin 12a moves away from the edge of the disk d. That is, when the clamping operation is performed, there is no member that comes into contact with the disk d, and there is no possibility that the disk d is damaged.

Finally, as shown in FIG. 5, the small gear 9b of the power gear 9 moves to the left end of the rack 10,
0 presses the switch 14 and the switch 1
4, the drive motor 1 stops. At this point, the disc loading operation is completed.

Next, the clamp operation will be described. FIG. 6 shows a clamp operation start state, and shows a state of the shift plate 11 and the clamper arm 15 in FIG. At this time, the cam pin 1 of the shift plate 11
1b contacts the cam portion 15b of the clamper arm 15,
The position of the clamper arm 15 is regulated against the urging force of an elastic member (not shown).

The state shifts from this state to the state shown in FIG. That is, the shift plate 11 moves to the right, and the cam pin 11b separates from the cam portion 15b of the clamper arm 15. Therefore, the clamper arm 15 rotates counterclockwise in the drawing due to the urging force of an elastic member (not shown). The clamp operation can be performed by the operation of the clamper arm 15. Thereby, the disk d is fixed to the turntable.

Next, the disc ejection operation of this embodiment will be described. Here, first, the operation of each member that shifts from FIG. 5 to FIG. 4, the reverse operation of the clamp operation that shifts from FIG. 7 to FIG. 6, and finally the operation of each member that shifts from FIG. 4 to FIG. explain.

That is, at the time of completion of the disc loading operation shown in FIG. 5, the small gear 9b of the power gear 9 is located at the left end of the rack 10. When the ejection operation is performed from this state, the drive motor 1 rotates in the reverse direction,
This torque is transmitted to the power gear 9 via the motor gear 1a, the transmission gears 2, 3 and the idler gear 5, and the rack 10 meshing with the small gear 9a of the power gear 9 moves to the left,
The shift plate 11 moves to the left (FIG. 4).

When the shift plate 11 moves to the left in this manner, the cam pin 11b comes into contact with the cam portion 15b of the clamper arm 15, and the clamper arm 15 rotates clockwise in the drawing against the urging force of an elastic member (not shown). Rotate in the direction. Thereby, the disk d is released from being fixed to the turntable (from FIG. 7 to FIG. 6).

Subsequently, when the shift plate 11 moves leftward from the state shown in FIGS. 4 to 3, first, the cam pins 11a of the shift plate 11
Pressing the left end of the long hole 13a, the detect plate 13 moves to the left in the figure. With the movement of the detection plate 13, the detection plate 12 is also moved to the left in the drawing by the elastic force of a spring (not shown) in a state where the protruding portion 12b of the detection plate 12 is kept in contact with the contact portion 13b. Moving. Then, the disk pin 12a is
Abut the edge of

In this state, the cam pin 11a of the shift plate 11 continues to press the left end of the long hole 13a of the detect plate 13, and the cam pin 6a of the power change plate 6 is located at the middle of the cam hole 13c of the detect plate 13. Until the detection plate 13 moves. At this time, the contact portion 13b is
Away from

With the movement of the detect plate 13, the restriction on the cam pin 6a by the cam portion 12c and the cam hole 13c is removed, and the power change plate 6 becomes rotatable. Therefore, with the cam portion 12c and the cam hole 13c sandwiching the cam pin 6a from above and below, the cam pin 6a descends along the cam portion 12c and the cam hole 13c, and the power change plate 6 rotates clockwise in FIG.

When the power change plate 6 rotates clockwise, the idler gear 5 separates from the power gear 9 and the idler gear 4 meshes with the power gear 7. As a result, the rotational force from the drive motor 1 in the reverse direction is transmitted to the power gear 7 via the motor gear 1a, the transmission gears 2, 3 and the idler gear 5, and the power gear 7 and the transport roller 8
Is inverted. The disk d
Is discharged.

When the disk d is ejected, the detection plate 12 returns to the initial position by the elastic force of a spring (not shown).

In the present embodiment as described above, the loading operation and the ejecting operation of the disk d can be reliably performed without using a light detection sensor or an electromagnetic solenoid. Therefore, the installation space occupied by the electromagnetic solenoid is not required, which can contribute to downsizing of the device. In addition, since no expensive members such as a light detection sensor and an electromagnetic solenoid are used, low cost can be realized, which is economically advantageous.

Further, no rotational force is supplied from the drive motor 1 to the transport roller 8 until the suction operation is completed and the discharge operation is started. Accordingly, the rotating transport roller 8 does not hit the disk during the clamping operation and the disk in the reverse operation of the clamping operation, and the disk d is not damaged. Therefore, the reliability and safety of the device have been greatly improved.

The disk loading apparatus of the present invention is not limited to the above embodiment, but includes another embodiment as shown in FIG. In another embodiment,
The "gear means" includes a planetary gear 16 provided on a gear 17 serving as a rotation source and a power change link 18 having a cam pin 18a, and further has a cam through which the cam pin 18a is inserted instead of the detect plate 13 of the above embodiment. A detect plate 19 having a hole 19a is provided.

According to the embodiment having such a configuration, the cam hole 19a moves the cam pin 18a up and down with the movement of the detection plate 12, and the planetary gear 16 is selectively meshed with the power gear 7 or 9 or these. Gear can be meshed with the gear. Therefore, the same function and effect as those of the above-described embodiment can be obtained, and the configuration can be further simplified. Furthermore, it goes without saying that the dimensions and the shape of the constituent members of the present invention can be appropriately changed.

[0048]

As described above, according to the disk loading device of the present invention, the switching from the disk loading operation to the clamping operation can be performed without using an electromagnetic solenoid having a large installation space. Since it can contribute and does not require an expensive member such as a light detection sensor, a low-cost disk loading device can be provided. In addition, since the drive source does not apply a rotational force to the transport roller when the suction operation is completed, there is no possibility of damaging the disk, and the reliability and safety of the apparatus are improved. Further, in response to the movement of the detecting means, the cam member holds and releases the meshing between the gear means and one of the first gear and the second gear, and further from the holding of the meshing to the holding. Since the movement of the gear means is guided while being controlled until the gear is canceled, the gear can be surely and quietly switched.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of an embodiment of the present invention.

FIG. 2 is a side view of a main part of the present embodiment (a loading operation start state).

FIG. 3 is a side view of a main part of the embodiment (in the middle of a loading operation).

FIG. 4 is a side view of a main part of this embodiment (in the middle of a loading operation).

FIG. 5 is a side view of a main part of this embodiment (in a state where a loading operation is completed).

FIG. 6 is a side view of a main part of the embodiment (in a state where a clamping operation is started).

FIG. 7 is a side view of a main part of the embodiment (in a state where a clamping operation is completed).

FIG. 8 is a side view of a main part of another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 drive motor 2, 3 transmission gear 4, 5 idler gear 6 power change plate 7, 9 power gear 8 transport roller 10 rack 11 shift plate 15 clamper link 12 detection plate 13 detect plate 14 switch 15 clamper link 16 planetary gear

Claims (1)

(57) [Claims] 1. A disk loading device comprising a drive source, a transport roller for sucking a disk, and a clamper for clamping a disk, wherein: a first gear for applying a rotational force to the transport roller; and a clamp force for applying a clamp force to the clamper. A second gear, a third gear to which a rotational force is supplied from the drive source, and meshing with the third gear, and can selectively mesh with any one of the first gear and the second gear. A gear unit; a detection unit that is pushed by the disk to move; and the gear unit and the first unit according to the movement of the detection unit.
The gear is held and released from one of the gear and the second gear, and the holding is released, and the movement of the gear means is guided while being controlled from the holding of the tooth until the release of the holding. A disc loading device comprising: a cam member.