KR20000015561A - Loading apparatus of multi compact disk player - Google Patents

Abstract

PURPOSE: A loading apparatus of multi compact disk player is provided to reduce the quantity of component and to bring the simplification of operation by removing a tray with loading and rotation of compact disk only by the roulette. CONSTITUTION: The loading apparatus of multi compact disk player, equipped with a roulette(12), a driver unit(20) and a chucking plate(16), comprises: a guidance means formed on the upper surface of chassis(10) in the direction of loading; a slipping means(120) formed on the lower surface of the roulette(12); a link(130) installed to be movable and rotatable to the slipping means(120); a central axis(140) of the roulette installed at the place that the slipping means(120) and the link(130) are crossed; a gear means(150) installed in a part of the link(130); a power transmission means(160) connecting the gear means, the central axis and other part of links; a rack gear(170) formed so as to be incorporated with the gear means; and a driving means(180) transmitting the power.

Description

Loading device of multi compact disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi compact disk player. More particularly, the compact disk is loaded and rotated only by a roulette to reduce the number of parts and operate by eliminating a tray. The loading device of a multi-CD player can bring simplicity.

In general, a compact disk player (hereinafter referred to as a CD player) is equipped with a laser optical pickup device for reproducing recording information from a pit on a compact disk, which is an optical recording medium. When the CD is seated between the CD player's tray and the upper support, the drive unit rotates the CD, and the optical pickup device mounted at the bottom of the tray is transferred to the CD's radial direction to play the CD. .

On the other hand, the multi-CD player is to be placed so that a plurality of CDs placed in the tray and to select the desired CDs without repeatedly ejecting the tray to improve the durability and user convenience of the CD.

1 is a plan view schematically showing a conventional multi-CD player.

As shown, a conventional multi-CD player has a chassis 10, a roulette 12 in which a plurality of CDs are placed and selectively rotated, and a tray 14 for horizontally transferring the roulette 12 from the chassis 10. ), A drive unit 20 mounted with an optical pickup device for raising and reproducing the CD, and a chucking plate 16 for compressing and rotating the central portion of the CD together with the drive unit 20.

The driving mechanism for operating the multi-CD player is a tray motor installed at one end of the chassis 10 to move the tray 14 horizontally and to raise the drive unit 20 toward the chucking plate 16. (40) and drive unit motor (30), drive gear (32) addressed to the drive unit motor (30), cylindrical cam (34) extending to the drive gear (32) and having a threaded portion at the circumference; , The reduction gear unit 42 spoken to the tray motor 40, the pinion 44 delivered to the reduction gear unit 42, and the rack 46 formed on one side of the tray 14 to engage with the pinion 44. )

The roulette 12 is rotatably installed on the central axis of the tray 14, the roulette motor 52 provided on the upper surface of the tray 14, and the internal gear 54 formed concentrically on the bottom of the roulette 12. And an interlocking gear 56 installed between the roulette motor 52 and the internal gear 54 so as to transmit rotational force of the roulette motor 52.

The operation of the conventional multi-CD player having such a configuration drives the tray motor 40 when an eject signal is applied to the control circuit part of the player. The tray motor 40 is decelerated at a constant speed while passing through the reduction gear unit 42 to move the rack 46 engaged with the pinion 44. The tray 14 is horizontally conveyed and withdrawn from the chassis 10 by the rotation of the rack 46. When the tray 14 is withdrawn as much as the set, the stopper 48 formed at one end of the pinion 44 turns on the toggle switch T to stop the drive of the tray motor 40 to eject the tray 14. The mode is complete.

When the user places a plurality of desired CDs on the roulette 12 and then applies a constant force in the opposite direction from which the tray 14 is drawn out, the stopper 48 of the pinion 44 turns off the toggle switch T. The tray motor 40 is driven in the opposite direction as in the eject mode to load the tray 14 into the chassis 10 to perform the loading mode.

Thereafter, the CD mounted on the roulette 12 is rotated together with the roulette 12 by the roulette motor 52, so that the selected one CD is positioned between the drive unit 20 and the chucking plate 14.

In this way, after the correct position of the playback CD is set and the play mode is set, the drive unit motor 30 is driven to rotate the drive gear 32 and the cylindrical cam 34 to raise the drive unit 20. The CD is raised together with the drive unit 20 so that the center thereof is compressed between the chucking plate 16 and the drive unit 20. The compressed CD is rotated by a drive motor mounted in the drive unit 20, and the contents recorded on the CD are reproduced by the optical pickup device.

On the other hand, since the tray 14 and the roulette 12 are independent of the drive unit 20 while the selected CD is being reproduced, the tray 14 can be ejected, and the tray 14 is ejected when the tray 140 is ejected. You can also replace the remaining CDs.

However, such a conventional multi-CD player is provided with a drive device for transporting the tray 14 and a drive device for rotating the roulette 12 is the cause of the increase in cost by increasing the number of parts, in particular, roulette Since the driving device for rotating must be mounted between the tray and the roulette, there is a disadvantage in that there is a limitation in reducing the volume of the multi-CD player.

Therefore, the present invention is to solve such a conventional problem, by reducing the number of parts by eliminating the tray by giving the roulette the role of the tray for the horizontal transfer of the multi-CD player, horizontal transfer and rotational movement only with roulette Its purpose is to provide a multi-CD player that can bring about simplicity of operation.

The present invention provides a chassis, a roulette in which a plurality of CDs are placed and selectively rotated, a drive unit mounted with an optical pickup device for raising and playing the CD, and a central portion of the CD together with the drive unit. A multi-CD player having a chucking plate which is compressed and rotated, comprising: a guide means formed in a loading direction on an upper surface of the chassis, a sliding means formed on a bottom surface of a roulette corresponding to the guide means, and a sliding means formed in a loading direction on a sliding means. A central axis of the first long hole, a link rotatably installed in the first long hole, a second long hole formed in the longitudinal direction of the link, a central axis of the roulette provided at a point where the first long hole and the second long hole intersect, A first pulley fixed to a central axis of the second pulley, a second pulley installed at one end of the link, and a first gear and a second gear installed at the other end of the link. A third pulley installed on a rotation shaft of the first gear, a power transmission member connecting the first, second and third pulleys, an arc-shaped rack gear formed to be engaged with the second gear at one end of the chassis, and the first pulley. And driving means for supplying driving force to the gear.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a plan view schematically showing a conventional multi-CD player,

2 is a plan view schematically showing a multi-CD player according to the present invention;

3 is a cross-sectional view taken along the line A-A of FIG.

4a to 4b is a state diagram used in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

10 Chassis 12 Roulette

16: chucking plate 20: drive unit

110: guide means 112: buffer member

114: guide 120: sliding means

122: Chapter 1 130: Links

132: Chapter 2 140: The central axis (of roulette)

150: gear means 152: first gear

154: second gear 156: leaf spring

160: power transmission means 162: first pulley

164: second pulley 166: third pulley

168 power transmission means 170 rack gear

180: driving means

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

2 is a plan view schematically illustrating a multi-CD player according to the present invention, and FIG. 3 is a cross-sectional view taken along the line A-A of FIG.

As shown, the multi-CD player according to the present invention includes a chassis 10, a roulette 12 in which a plurality of CDs are placed and selectively rotated, and a drive unit for mounting and reproducing the CD with an optical pickup device. 20) and a chucking plate 16 for pressing and rotating the central portion of the CD together with the drive unit 20.

The guide means 110 is formed on the upper surface of the chassis 10 in the loading direction, and the sliding means 120 is formed on the bottom of the roulette 12 corresponding to the guide means 110, and the sliding means 120 is provided. The first long hole 122 is formed in the loading direction so that the roulette 12 can be moved forward and backward in the range from the loaded position to the ejected position.

The central axis 140 of the roulette 12 is installed in the first long hole 122 of the sliding means 120 to move along the first long hole 122.

On the other hand, the central axis 140 of the roulette 12 is installed in the second long hole 132 of the link 130, the second long hole 132 is formed.

That is, the central axis 140 of the roulette 12 is installed at the point where the first long hole 122 of the sliding means 120 and the second long hole 132 of the link 130 intersect.

Meanwhile, the first pulley 162 is fixed to the central axis 140 of the roulette 12, and the second pulley 164 is installed at one end of the link 130.

In addition, the gear unit 150 is installed at the other end of the link 130. That is, the gear means 150 is configured such that the first gear 152 and the second gear 154 mesh with each other on the opposite side of the link 130 on which the second pulley 164 is installed.

The third pulley 166 is installed on the rotation shaft of the first gear 152.

Meanwhile, the third pulley installed on the first gear 152, the first pulley 162 provided on the central axis 140 of the roulette 12, and the second pulley 164 provided on one end of the link 130 may be interlocked. A power transmission member 168 is provided to connect at the same time.

On the other hand, the power transmission means 160 for rotating the roulette 12 is composed of a first pulley 162, a second pulley 164, a third pulley 166 and a power transmission member 168 connecting them. .

The leaf spring 156 is interposed between the first gear 152 and the link 130 so that a frictional force can be applied to move the link 130 in the rotational direction when the first gear 152 starts to rotate. The second gear 154 may be engaged with the rack gear 170.

Meanwhile, an arc-shaped rack gear 170 is formed at one end of the chassis 10 so as to be engaged with the second gear 154 of the gear means 150, and a driving means for transmitting power to the gear means 150. 180 is installed to mesh with the first gear 152.

The operation of the present invention configured as described above will be described.

4A is a view illustrating a state in which the roulette 12 is ejected, and FIG. 2 is a view illustrating a state in which only the link 130 is moved while the roulette 12 is loaded, and FIG. 4B is a link 130. And the sliding means 120 is a view showing a state in which the loading is completed at the same time moved.

As shown in FIG. 4A, when the loading mode is set in a state in which the roulette 12 is ejected, the driving means 180 is driven by a controller not shown to rotate the first gear 152 counterclockwise. The second gear 154 is rotated clockwise while interlocking.

At the same time, the leaf spring 156 interposed between the first gear 152 and the link 130 moves the link 130 in the rotation direction when the first gear 152 starts to rotate so that the second gear 154 is moved. To be engaged with the rack gear (170).

As such, when the second gear 154 is engaged with the rack gear 170, one end of the link 130 moves along the rack gear 170 by the rotation of the second gear 154, so that the link 130 is the first gear. It moves while rotating about the rotation axis of (152).

According to the rotational movement of the link 130 about the rotation axis of the first gear 152, one end of the link 130 moves in the direction of the chassis 10, and the roulette 12 coupled with the link 130 moves together. do.

At this time, the central axis 140 of the roulette 12 is moved along the first long hole 122, the displacement according to the circular motion of the link 130 is the central axis 140 of the roulette 12 is the second long hole 132 ) Will not interfere with the movement.

FIG. 2 illustrates a state in which the rotation center of the link 130, that is, the axis of rotation of the first gear and the center axis 140 of the roulette 12 are aligned to each other, and the axis of rotation of the first gear and the roulette 12 are aligned. It can be seen that the interval between them is the shortest when the central axis 140 is placed in a straight line, the link 130 also maintains a state perpendicular to the guide means 110 and the sliding means 120.

Through this operation, the roulette 12 is approximately half loaded into the chassis 10.

As such, when the rotation axis of the first gear and the central axis 140 of the roulette 12 are in a straight line, the distance between the rotation axis of the first gear and the central axis 140 of the roulette 12 gradually increases, The central axis 140 of 12 begins to return to the initial position along the second long hole 132.

On the other hand, while the sliding means 120 is kept stationary while the central axis 140 of the roulette 12 moves to the end of the first long hole 122, the central axis 140 of the roulette 12 1 After moving to the end of the long hole 122, the sliding means 120 is moved along the guide means (110).

4B is a view showing a state in which the link 130 and the sliding means 120 are moved at the same time and the loading is completed.

As shown, at the same time the sliding means 120 is moved to the end of the guiding means 110 by the central axis 140 of the roulette 12, the second gear 154 is released from the limited gear Therefore, the driving force of the driving means 180 is not transmitted to the movement of the link 130 and the movement of the central axis 140 of the roulette 12 so that the loaded state is maintained.

Meanwhile, the rotational force generated by the driving means 180 is transmitted to the pulley of the first gear 152 through the third pulley 166 of the first gear 152 to rotate the roulette 12.

Since the distance between the second pulley 164 and the third pulley 166 is maintained in a fixed state, even if the position of the first pulley 162 varies between the second pulley 164 and the third pulley 166, it is infinite. Power transmission of the power transmission member 168 made of a track is made smoothly.

As such, the roulette 12 is rotated such that any one CD selected by the user among the plurality of CDs mounted on the roulette 12 is positioned between the drive unit 20 and the chucking plate 16.

In this state, when the user sets the play mode, the drive unit motor 30 is driven in the same manner as in the related art to rotate the drive gear 32 and the cylindrical cam 34 to raise the drive unit 20. The CD is raised together with the drive unit 20 so that the center thereof is compressed between the chucking plate 16 and the drive unit 20. The compressed CD is rotated by a drive motor (not shown) mounted inside the drive unit 20, and contents recorded on the CD are reproduced by the optical pickup device (not shown).

On the other hand, since the roulette 12 is independent of the drive unit 20 even when one selected CD is being reproduced, the roulette 12 can be ejected, and when the roulette 12 is ejected, the CD being reproduced while being reproduced is reproduced. You can also replace the remaining CDs.

Meanwhile, the operation in which the roulette 12 is ejected is performed in the reverse order of the operation in which the roulette 12 is ejected.

Meanwhile, in the exemplary drawing, the guide means 110 and the sliding means 120 are formed in the chassis 10 and the roulette 12, respectively, but the present invention is not limited thereto. It is also possible for the means 110 to be formed in the chassis 10 and the roulette 12, respectively.

On the other hand, it is advantageous that a shock absorbing member 112, for example, a rubber pad or the like, is attached to one end of the guide means 110 in contact with the sliding means 120.

In addition, the guide 114 is preferably formed on both side surfaces of the guide means 110 so that the sliding means 120 can be stably moved.

In the above description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as it merely illustrates a preferred embodiment of the present invention.

As described above, according to the present invention, the role of the tray for the horizontal transfer of the multi-CD player is reduced to the number of parts by eliminating the tray, and the horizontal movement and the rotational movement are performed only by the roulette to simplify the operation. Can be imported.

Claims (4)

The chassis, a roulette 12 in which a plurality of CDs are placed and selectively rotated, a drive unit 20 mounted with an optical pickup device to lift and reproduce the CD, and a drive unit 20 together with the drive unit 20 are crimped. In the multi-compact disc player having a chucking plate 16 to rotate the Guide means formed on the upper surface of the chassis in a loading direction; Sliding means formed on a bottom surface of the roulette corresponding to the guide means; A link provided in the sliding means so as to be moved up and down, left and right, and pivoted; A central axis of the roulette provided at a point where the sliding means and the link cross each other; Gear means installed at one end of the link; Power transmission means for connecting the gear means, the central axis of the roulette, and the other end of the link; An arc-shaped rack gear formed to be engaged with the gear means at one end of the chassis; And a driving means for transmitting power to the gear means. According to claim 1, The first long hole is formed in the sliding means in the loading direction, the link is installed rotatably in the first long hole, is formed in the longitudinal direction of the link is rotatably installed with the central axis of the roulette A loading device for a multi-compact disc player comprising a second chapter. The multi-compact of claim 1, further comprising: a first pulley fixed to the central axis of the roulette, a second pulley installed on one end of the opposite link of the gear means, and a third pulley installed on the rotation shaft of the gear means. Disc player loading device. The multi-compact disc player loading apparatus according to claim 1, further comprising a leaf spring installed so that friction force acts between the gear means and the link.