JPH06103675A - Driving mechanism for disk changer - Google Patents

Abstract

PURPOSE:To reduce the number of parts by specifying one motor for the driving mechanism and to selectively perform the rotation of a rotary tray and the vertical movement of a disk reproducing mechanism with one selectively driving gear. CONSTITUTION:An oscillatory lever 29 is oscillated by the rotation of the driving motor 22, and the selectively driving gear 28 fitted to this lever 29 is meshed with either a gear part 5 of the rotary tray 3 or a gear part 35 of a cam member 16, so that the rotation of the motor 22 is transmitted to the tray 3 or the member 16. By the rotation of the tray 3, a disk is sent in turn, and the disk reproducing mechanism 7 is moved vertically by the rotation of the member 16 so that the disk is chucked and reproduced. A projected pin 32 on the lever 29 is made to enter a groove 37 of the member 16 to maintain the gear 28 and the gear part 35 of the member 16 in mesh. Thus, by selecting the rotation of the tray 3 and the vertical movement of the mechanism 7 with the gear 28, the tray 3 and the mechanism 7 can both be driven by one gear 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive mechanism for a rotary disc changer device, for example, a drive of a rotary disc changer for rotating a tray on which a plurality of discs are placed and moving it to a reproducing position for reproduction. It is related to the mechanism.

[0002]

2. Description of the Related Art A rotary disc changer device of this type is one in which a rotary tray having a plurality of discs mounted thereon is rotated to sequentially move the discs to a position of a disc reproducing mechanism for reproduction. A drive mechanism for driving the rotary tray and the disc reproducing mechanism is required.

A conventional drive mechanism of this type requires two motors, one for rotating the rotary tray and the other for raising and lowering the disc reproducing apparatus, which not only increases the manufacturing cost but also increases the rotary tray. However, there is a problem in that it takes a lot of time to set the timings of the rotation operation of the disk player and the lifting operation of the disk reproducing device.

In order to solve such a problem, there has been proposed a mechanism for selectively driving the rotary tray and the disk reproducing device with one motor.

[0005]

However, such a conventional drive mechanism includes a gear for rotating the rotary tray,
Since a gear for raising and lowering the disc reproducing device is required, there is a problem that the number of gears increases, the number of parts increases, and the manufacturing cost increases.

The present invention has been made in view of the above-mentioned conventional problems. One motor for the drive mechanism is used, and the rotation of the rotary tray and the raising / lowering operation of the disk reproducing mechanism are selectively driven by one drive. It is an object of the present invention to provide a rotary type disk changer drive mechanism in which the number of components is reduced and the manufacturing cost is reduced by selectively using a gear.

[0007]

According to the present invention, there is provided a rotary tray on which a plurality of discs are mounted, and a disc reproducing mechanism for reproducing a selected one of the discs mounted on the rotary tray. In a drive mechanism of a rotary type disc changer device comprising a rotary tray and a drive mechanism for driving a disc reproducing mechanism, a drive gear rotated by a drive motor and a drive gear fixed to the drive gear coaxially with the drive gear. A swing lever that swings about the axis of the, a selective drive gear that is supported by the swing lever and meshes with the drive gear, a cam groove with which one end of the disc reproducing mechanism is engaged, and the swing lever. A cam member having a groove with which a protruding pin is engaged and a gear portion with which the selective drive gear is meshed, and the swing lever is rotated by the rotation of the drive motor. And a drive mechanism for selectively engaging the selective drive gear with the gear part of the cam member and the gear part of the rotary tray to perform the chucking operation of the disk reproducing mechanism and the rotary operation of the rotary tray. It is a feature.

[0008]

In the present invention, the rocking lever is rocked by the rotation of the drive motor, and the selective drive gear attached to the rocking lever meshes with either the gear portion of the rotary tray or the gear portion of the cam member. The rotation of the drive motor is transmitted to the rotary tray or the cam member. The discs are sequentially fed by the rotation of the rotary tray, or the disc reproducing mechanism is moved up and down by the rotation of the cam member to chuck the discs for reproduction. The pin projecting from the rocking lever is inserted into the groove of the cam member to securely hold the mesh between the selective drive gear, the cam member and the gear portion.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views showing an embodiment of a drive mechanism of a disc changer device according to the present invention.

First, the structure will be described. 1 to 3, reference numeral 1 denotes a chassis, and a rotary tray 3 is rotatably attached to a center shaft 2 provided at the center of the chassis. The rotary tray 3 is provided with five disk mounting portions 4 radially. A rim 6 having a gear portion 5 on its inner surface is concentrically provided on the outer periphery of the rotary tray 3. Reference numeral 7 denotes a disc reproducing mechanism, which is composed of a turntable 8, an optical pickup 9 and a chucking mechanism 10 arranged below the rotary tray 3.

The chucking mechanism 10 has a chucking arm 1 whose one end is supported by a spindle 11 on the chassis 1.
The chucking arm 12 is provided with the turntable 8 and the optical pickup 9, and the pin 14 is provided at the tip end thereof to engage with a cam groove 17 of a cam member 16 described later. 40 is a chucking member fixedly supported above the rotary tray 3, and 41 is an arm that supports the chucking member 40.

Reference numeral 15 is a drive mechanism provided on the lower surface of the chassis 1, and comprises a cam member 16 and a gear mechanism 18. The gear mechanism 18 includes a shaft 19 on the chassis 1.
A pulley 21 is integrally provided on the first gear 20, and the pulley 21 and the pulley 23 of the drive motor 22 are connected by a belt 24. A second gear 26 supported by a shaft 25 meshes with the first gear 20, and a third gear 27, which is a drive gear, is provided integrally with the second gear 26. A fourth gear 28, which is a selective drive gear, meshes with the third gear 27. A swing lever 29 fixed to the third gear 27 is pivotally supported on the lower portion of the shaft 25 of the second and third gears 26 and 27, and the shaft 30 fixed to the swing lever 29 is mounted on the shaft 30. Fourth
The gear 28 is supported. A washer 31 that gives resistance to the fourth gear 28 is attached to the upper portion of the shaft 30.

A pin 32 is fixed to the tip of the swing lever 29. Reference numerals 33 and 34 are stoppers that restrict the movement of the swing lever 29.

A gear portion 35 is formed on a part of the outer periphery of the lower end of the cam member 16, and a groove 37 having an open end 36 toward the swing lever 29 is formed on the lower surface.
The pin 32 is adapted to enter. Further, the cam groove 17 is formed so as to open toward the disc reproducing mechanism 7, and the pin 14 is engaged with the cam groove 17. The cam groove 17 is shaped so as to descend clockwise (away from the chassis 1) in FIG. 3, and the pin 14 descends when the cam member 16 rotates counterclockwise in FIG. Along with this, the chucking mechanism 10 of the disc reproducing mechanism 7 is also lowered. 3 and 4 are plan views seen through in the X direction shown in FIG.

Next, the operation will be described. When the drive motor 22 is rotated in the direction indicated by the solid arrow A in FIG. 3, the first gear 20 is moved through the pulley 23, the belt 24, and the pulley 21 in the direction indicated by the solid arrow B, and the second and third gears 26, 27 are respectively indicated by the solid lines. The drive lever 29, which rotates in the arrow C direction and is fixed to the third gear 27, swings in the solid arrow D direction. The fourth gear 28 is the third
It rolls along the outer periphery of the gear 27. The swing lever 29 stops at the position where it hits the stopper 34.

As shown in FIG. 4, the fourth gear 28 and the gear portion 25 of the cam member 16 are engaged with each other by driving the swing lever 29, and at the same time, the pin 32 is inserted into the groove 37. Cam member 1
6 rotates by the fourth gear 28 in the direction of the solid line arrow E, and the pin 14 engaged with the cam groove rises, so that the chucking arm 12 moves up with the support shaft 11 as a fulcrum, and the turntable 8 moves up. Chucks while lifting the disc on the tray 3.

Next, when the drive motor 22 is rotated in the opposite direction, the fourth gear 28 rotates in the direction of the dotted arrow F, the cam member 16 also rotates in the direction of the dotted arrow G, and the chucking arm 12 descends. Chucking is released. When the cam member 16 rotates in the direction of the dotted arrow G and the position of the open end 36 of the groove reaches the position of the pin 32, the pin 32 is disengaged from the groove 37, whereby the swing lever 29 swings in the direction of the dotted arrow H. . In addition, when the drive motor 22 is rotated in the reverse direction, the swing lever 2
Although a force to swing in the direction of the dotted arrow H acts on 9,
The engagement between the pin 32 and the groove 37 prevents the rocking, the rotation of the fourth gear 28 is transmitted to the cam member 16, and the rocking is started after the pin 32 is disengaged from the open end 36 of the groove 37.

The swing lever 29 stops at a position where it hits the stopper 33 (position in FIG. 3), and at this position, the fourth gear 28 meshes with the gear portion 5 of the rotary tray 3, and the rotary tray 3 has a dotted arrow I. It rotates in the direction and transfers the next disc onto the disc reproducing mechanism 7. When the drive motor 22 rotates in the direction of the solid arrow A, the gear portion 5 and the fourth gear 28 are disengaged and the next disk is chucked by the above-mentioned operation.

As described above, the fourth gear 28 serves as a selective drive gear for selectively rotating the rotary tray 3 and moving the disc reproducing mechanism 7 up and down, whereby one selective drive gear 28 is used for the rotary tray 3. It is possible to drive both the disk reproducing mechanism 7 and the disk reproducing mechanism 7.

[0020]

As described above, according to the present invention,
The number of parts is reduced and the manufacturing cost is significantly reduced by using only one motor for the drive mechanism and by selectively rotating the rotary tray and raising / lowering the disc reproducing mechanism with one selection drive gear. It can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a drive mechanism of a disc changer device according to the present invention.

FIG. 2 is a side view of a main part of the embodiment shown in FIG.

FIG. 3 is a plan view of the embodiment shown in FIG. 2 seen transparently from the X direction.

FIG. 4 is a plan view showing an operation state as seen transparently from the X direction of the embodiment of FIG.

[Explanation of symbols]

 3 Rotary Tray 7 Disc Playback Mechanism 15 Drive Mechanism 16 Cam Member 20 First Gear 22 Drive Motor 26 Second Gear 27 Third Gear (Drive Gear) 38 Fourth Gear (Drive Select Gear) 29 Swing Lever 32 Pin 35 Gear Part 37 groove

Claims (1)

[Claims] 1. A rotary tray on which a plurality of discs are mounted, and a disc reproducing mechanism for reproducing a selected one of the discs mounted on the rotary tray,
In a drive mechanism of a rotary type disc changer device comprising a rotary tray and a drive mechanism for driving a disc reproducing mechanism, a drive gear rotated by a drive motor and a drive gear fixed to the drive gear coaxially with the drive gear. A swing lever that swings about the axis of the, a selective drive gear that is supported by the swing lever and meshes with the drive gear, a cam groove with which one end of the disc reproducing mechanism is engaged, and the swing lever. A cam member having a groove with which a protruding pin is engaged and a gear portion with which the selective drive gear is meshed, and the swing lever is swung by the rotation of the drive motor to shift the selective drive gear to the cam member. Drive mechanism that selectively engages with the gear part of the rotary tray and the gear part of the rotary tray to perform the chucking operation of the disk reproducing mechanism and the rotary operation of the rotary tray. The drive mechanism of the disc changer apparatus characterized by comprising.