KR19980021163A - Chucking and tray drive of optical disc player - Google Patents

Abstract

The present invention relates to a chucking and tray driving apparatus of an optical disc player, and in particular, divided into a first deck on which a tray into which a roulette for receiving a plurality of optical discs is placed, and a second deck on which an optical pickup is installed, wherein the first deck is installed. A chucking and tray driving apparatus of an optical disc player for driving forward and backward rotation of a driving force generated by a driving means installed in a driving means and driving the tray and chucking the second deck, wherein the driving means and And a cam that is rotated in a forward and reverse direction from a reference angle to a predetermined angle by receiving rotational force from a transmission means, meshes with the cam and drives the tray before the disc is chucked; And a second gear portion for driving the tray after chucking of the disk, and a lower portion of the tray. And a first rack sliding with the first gear, and a second rack formed under the tray, the second rack sliding with the second gear. It is about.

Description

Chucking and tray drive of optical disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chucking and tray driving apparatus of an optical disc player, and more particularly, to an apparatus for driving a tray so that a disk can be changed during chucking.

In addition, the present invention relates to a chucking and tray driving apparatus of an optical disc player having a multi-step transmission means, which reduces the number of parts used by being transmitted through a plurality of gears.

In addition, it is divided into a plurality of displacement angles within a range of one rotation, and chucking and tray driving correspond to each displacement angle one-to-one, so that driving of equipment for turning and turning is uniformly performed within each displacement angle. It relates to the chucking and tray drive of an optical disc player that simplifies the control of the motor to ensure the reliable operation of the equipment and at the same time prevents equipment failure and malfunction.

Optical disk devices typically include audio disk drivers (ODD), mini disk drivers (MD), compact disk drivers (CDP), and compact disk ROM players (CD ROM). The optical disk device is mounted on a driving mechanism to irradiate a light beam on a signal recording surface of the optical recording medium to read information recorded on the optical recording medium, or as an optical pick-up means for writing information. The device is in use.

Among such optical disc devices, an optical disc player is a device for recording or reading out necessary information by recording information on an optical disc or reproducing information stored on an optical disc through video or audio, and having various sizes in a device accommodating one type of optical disc. The optical disc player which accommodates the optical disc of the optical disc player and the optical disc player which can read a lot of information more conveniently by accommodating many optical discs at once, have been developed.

On the other hand, an optical disc player accommodating a plurality of optical discs at once is largely a loading device for loading and unloading a tray containing a roulette in which a plurality of optical discs are placed, and a chucking apparatus for setting an optical disc placed in the roulette to the optical pickup. Are distinguished.

However, the conventional optical disc player has a disadvantage in that the driving device for driving the loading device and the chucking device is provided separately, and the transmission path from the driving source is complicated, so the number of parts is high and the manufacturing cost is high. There was a problem that could occur.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a chucking and tray driving apparatus for an optical disc player capable of loading and chucking by one driving means.

Another object of the present invention is to provide a chucking and tray driving apparatus for an optical disc player which reduces the number of parts that have been used by being transmitted through a plurality of gears, having a transmission means formed in multiple stages.

Another object of the present invention is to divide into a plurality of displacement angles within one rotation range, and to allow chucking and tray drive to have a one-to-one correspondence with each displacement angle, so that the drive of the equipment for turning and reversing within each displacement angle is reduced. It is to provide a chucking and tray drive of the optical disc player to ensure the operation of the equipment by simplifying the control of the drive motor by making it uniform, and at the same time to prevent the failure and malfunction of the equipment.

1 is a schematic diagram of an optical disc player according to an embodiment of the present invention;

2 is an operation diagram showing a pre-loading state of the tray according to an embodiment of the present invention,

3 is an operation diagram showing a tray loaded state according to an embodiment of the present invention,

4 is an operation diagram showing a state in which the second deck chucked according to an embodiment of the present invention,

5 is an operation diagram showing an unloading state of a tray after chucking of a second deck according to an embodiment of the present invention;

6 is a state diagram in which the displacement angle with respect to the cam is divided in the present invention, and

FIG. 7 is a main view schematically showing a mating state of a cam and first and second gears engaged with the cam according to the present invention. FIG.

* Explanation of symbols used in the main part of the drawing

1: optical disc player

10: roulette

12: tray

14: the first deck

18: 2nd deck

20: drive motor

22: electric vehicle

24: belt

26: pulley

28: first electric gear

30: second electric gear

32: third electric gear

40: cam

42: first gear part

44: second gear unit

46: third gear portion

48: protrusion

50: first gear

52: first gear

54: second gear

60: second gear

62: third gear

64: fourth gear

70: first rack

72: second rack

The driving force of the forward and reverse rotation generated by the driving means installed on the first deck is divided into a first deck into which a tray on which a roulette housing a plurality of optical disks is placed and a second deck on which an optical pickup is installed. A chucking and tray driving apparatus of an optical disc player which is transmitted through a means to drive the tray and simultaneously chucks the second deck, wherein the chucking and tray driving apparatus is connected to the transmission means and receives a rotational force from the transmission means at a predetermined angle from the reference angle. A cam that rotates in the forward and reverse directions until the first gear is engaged with the cam and drives the tray before chucking of the disk, and a second gear that engages with the cam and drives the tray after chucking the disk. A lower portion of the tray, the first rack sliding with the first gear, and a lower portion of the tray. The is accomplished by providing a chuck and a tray driving device for an optical disc player, characterized by configured by comprising a second rack to the sliding portion 2 and the gear.

According to a preferred feature 1 of the present invention, the cam is sequentially divided into a pre-chucking tray driving displacement angle, a chucking driving displacement angle, and a post-chucking tray driving displacement angle during rotation in a forward direction within a range of a reference angle to a predetermined angle. Are distinguished.

According to a preferred feature 2 of the present invention, the cam has a third gear portion formed at the end of the lower circumferential surface and receiving the driving force in engagement with the transmission portion, and within the tray driving displacement angle range before the chucking. A first gear portion formed at an end of a circumferential surface of the upper portion of the third gear portion to engage with the first gear portion to drive a first gear portion, and an upper portion of the first gear portion within the tray driving displacement angle range after the chucking; And a second gear portion formed at an end portion of the circumferential surface of the second gear portion to engage with the second gear portion to drive the second gear portion.

According to a preferred feature 3 of the present invention, the first gear portion is rotatably installed on the first deck to be engaged with the first gear portion, and is provided coaxially with the first gear and the first gear. It is comprised with the 2nd gear which engages with one rack.

According to a preferred feature 4 of the present invention, the second gear portion is rotatably installed on the first deck and is engaged with the second gear portion, and is provided coaxially with the third gear and the third gear. It is comprised with the 4th gear meshed with 2 racks.

According to a preferred feature 5 of the present invention, as the cam is rotated forward and backward within the tray driving displacement angle before the chucking, the driving force of the cam is adjusted to the first gear portion, the first gear portion, and the first gear portion. The trays are loaded and unloaded from each other to the first rack.

According to a preferred feature 6 of the present invention, the second deck is chucked and unchucked as the cam is rotated forward and backward within the chucking drive displacement angle.

According to a preferred feature 7 of the present invention, as the cam is rotated forward and backward within the tray driving displacement angle after the chucking, the driving force of the cam is the second gear portion, the second gear portion, and the second gear portion. And the second rack is unloaded and loaded in the chucking state, respectively.

Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings. 1 is a perspective view schematically showing an optical disc player according to an embodiment of the present invention, Figures 2 to 5 are excerpts showing the operation of the present invention, Figure 6 is a displacement angle of the cam in Figure 1 It is a schematic diagram which shows a division, and FIG. 7: is a figure which shows the cam and gear which engages with it in FIG.

1 to 5, the first deck 14 loaded with the tray 12 in which the roulette 10 accommodates a plurality of optical disks is placed, and an optical pickup (not shown). ) Is divided into the second deck 18 is installed, the driving force of the forward and reverse rotation generated by the drive motor 20 installed in the first deck 14 is transmitted through the transmission means 22 to the tray 12 Is applied to the optical disc player 1 for chucking the second deck 18 at the same time. The above-described transmission means 22 is rotatably installed on the first deck 14 to drive the drive motor 20 and A pulley 26 connected by a belt 24, a first electric gear 28 coaxially with the pulley 26, and a first electric gear 28 rotatably mounted on the first deck 14; And a second electric gear 30 to be engaged with and a third electric gear 32 provided coaxially with the second electric gear 30.

The chucking and tray driving apparatus of the optical disc player according to the present embodiment is connected to the third electric gear 32 of the power transmission means 22, and receives the rotational force from the power transmission means 22 from the reference angle to the predetermined angle. The cam 40 rotates in the forward and reverse directions, the first gear 50 is engaged with the cam 40 and drives the tray 12 before chucking of the disk, and the cam 40 is engaged with the disk. A second gear 60 for driving the tray 12 after chucking, a first rack 70 formed below the tray 12, and sliding with the first gear 50, and a tray 12. It is formed at the bottom of the), and is provided with a second rack (72) for sliding with the second gear (60).

The cam 40 described above has a tray drive displacement angle θ1 before chucking, a chucking drive displacement angle θ2, and a chucking tray as shown in FIG. 6, when the reference angle is rotated in the positive direction within a range of 0 to 360 degrees. It has the drive displacement angle (theta) 3 sequentially.

As described with reference to FIG. 7, the cam 40 is formed at the end of the lower circumferential surface of the lower portion, and is engaged with the third electric gear 32 of the electric drive to receive the driving force. And an end of the circumferential surface of the upper portion of the third gear portion 46 within the range of the tray driving displacement angle θ1 before chucking to engage with the first gear portion 50 to drive the first gear portion 50. It is formed at the end of the first gear portion 42 and the circumferential surface of the upper portion of the first gear portion 42 within the tray driving displacement angle θ3 after chucking, and meshes with the second gear portion 60 to engage with the second gear portion ( It is comprised with the 2nd gear part 44 which drives 60. FIG.

The above-mentioned first gear 50 is rotatably installed on the first deck 14 and is engaged with the first gear 42 of the cam 40, and the first gear 52. A second gear 54 is provided coaxially with the 52 and meshes with the first rack 70.

The above-described second gear 60 is rotatably installed on the first deck 14 and is engaged with the second gear 44 of the cam 40. And a fourth gear 64 provided coaxially with the 62 and engaged with the second rack 72.

Reference numeral 48 denotes a projection piece that is interlocked with the chucking device when chucking and chucking the optical disk on the second deck 18.

Hereinafter, the operation of this embodiment in the state configured as described above will be described.

First, the loading state in the tray open state will be described with reference to FIGS. 2 and 3. In the open state of the tray 12, as shown in FIG. 2, the bottom surface of the tray 12 in the gears 50 and 60 is shown. Ends of the racks 70 and 72 attached to each other are engaged with each other, and end portions of the first gear 42 of the cam 40 are engaged with the first gear 52 of the first gear. At this time, since the third gear 62 of the second gear portion does not mesh with the cam 40, the driving force of the cam 40 is not transmitted. In this state, when a driving force is generated by the driving motor 20 and the cam 40 is rotated counterclockwise (hereinafter, abbreviated as a forward direction), the driving force of the cam 40 is the first gear portion ( 42), the tray 12 is transmitted through the first gear 52, the second gear 54, and the first rack 70 of the first gear, and engages with it against the forward rotation of the cam 40. Since the first gear 50 rotates in the clockwise direction (abbreviated in the following reverse direction), the tray 12 is loaded in the state shown in FIG. 3 by moving upward in the drawing of FIG. 2. In addition, when the cam 40 rotates forward to exceed the displacement angle θ1, the engagement is released and the driving force of the cam is not transmitted. That is, the tray 12 is driven within the rotation angle of the cam 40, in which the first gear 50 is engaged with the first gear 42 of the cam 40, and the driving force is transmitted from the cam 40. Will be. On the contrary, when the cam 40 rotates in the reverse direction while the tray 12 is loaded, the first gear 50 rotates in the forward direction and the tray 12 moves downward to be unloaded. Therefore, as the cam 40 is rotated forward and backward within the tray driving displacement angle θ1 before chucking, the driving force of the cam 40 is the first gear portion 42, the first gear 52, and the first gear 52. ) And the first rack 70 to be loaded and unloaded, respectively.

Next, the state in which the second deck (not shown) is chucked while the tray 12 is loaded as described above will be described in detail with reference to FIGS. 3 and 4. When the cam 40 continues forward rotation to the displacement angle θ2 of the cam, the second piece is chucked by interlocking with the chucking device (not shown). At this time, the engagement of the first gear portion 42 is released, and thus the driving force of the cam 40 is not transmitted to the first gear portion 50 and the second gear portion 60, and eventually the tray 12 Will remain unmoved. In addition, when the cam 40 is reversely rotated after the chucking, the projection piece 48 is released in conjunction with the chucking device. Accordingly, as the cam 40 is rotated forward and backward within the chucking drive displacement angle θ2, the second deck is chucked and released.

Finally, a state in which the tray 12 is unloaded in the state where the second deck is chucked will be described with reference to FIGS. 4 and 5. In the initial state of the displacement angle θ3, the projection piece 48 is separated from the chucking device, and the second gear portion 44 of the cam 40 engages with the second gear portion 60. When the cam 40 rotates forward in such a state, the driving force of the cam 40 is reduced by the third gear 62, the third gear 62 of the second gear 60, the fourth gear 64, and the like. The tray 12 is transferred to the tray 12 through the second rack 72, and the tray 12 moves downward in the drawing of FIG. 4, and the tray 12 is unloaded during chucking. In addition, when the cam 40 rotates in the reverse state in the unloading state of the tray 12, the second gear 60 is rotated forward to load the tray 12. Accordingly, as the cam 40 is rotated forward and backward within the tray driving displacement angle θ3 after chucking, the driving force of the cam 40 is increased by the second gear portion 44, the second gear portion 60, and the second gear portion. The tray 12 is unloaded and loaded in the chucking state by being transferred to the 60 and the second rack 72, respectively.

As described above, according to the chucking and tray driving apparatus of the optical disk player according to the present invention, the loading and chucking is possible by one driving means, and the cam is formed in multiple stages so that it is transmitted through a plurality of gears. Due to the reduction of the number of parts used, the chucking and tray drive are operated uniformly according to the forward and reverse rotation of the cam by dividing it into multiple displacement angles for the rotation of the cam, thus simplifying the control of the drive motor, thus ensuring reliable operation of the machine. It is effective in preventing equipment breakdown and malfunction.

Claims (8)

The driving force of the forward and reverse rotation generated by the driving means installed on the first deck is divided into a first deck into which a tray on which a roulette housing a plurality of optical disks is placed and a second deck on which an optical pickup is installed. A chucking and tray drive of an optical disc player which is transmitted through a means to drive the tray and simultaneously chuck the second deck: A cam which is connected to the transmission means and receives rotational force from the transmission means to rotate in a forward and reverse direction from a reference angle to a predetermined angle; A first gear portion engaged with the cam and driving the tray before chucking of the disk; A second gear part engaged with the cam and driving the tray after chucking the disk; A first rack formed under the tray and sliding with the first gear; And The chucking and tray driving apparatus of the optical disc player, which is formed under the tray, and comprises a second rack sliding with the second gear. The method according to claim 1, wherein the cam, Chucking and tray driving apparatus of an optical disc player, characterized in that it is sequentially divided into a tray drive displacement angle before chucking, a chucking drive displacement angle, and a tray drive displacement angle after chucking during rotation in a forward direction within a range of a reference angle. . The method according to claim 1, wherein the cam, A third gear part formed at an end portion of the lower circumferential surface and receiving a driving force by meshing with the transmission part; A first gear portion formed at an end of a circumferential surface of the upper portion of the third gear portion within the tray driving displacement angle range before the chucking to engage with the first gear portion to drive a first gear portion; And And a second gear portion formed at an end portion of the circumferential surface of the upper portion of the first gear portion within the tray driving displacement angle after the chucking, and engaged with the second gear portion to drive the second gear portion. Player's chucking and tray drive. The method of claim 1, wherein the first gear portion, A first gear rotatably installed on the first deck and engaged with the first gear part; And And a second tooth installed coaxially with the first tooth and engaged with the first rack. The method of claim 1, wherein the second gear portion, A third gear rotatably installed on the first deck and engaged with the second gear part; And And a fourth gear installed coaxially with the third gear and engaged with the second rack. The method according to claim 1, As the cam is rotated forward and backward within the tray driving displacement angle before the chucking, the driving force of the cam is transmitted to the first gear unit and the first gear unit, the first gear unit and the first rack, respectively, so that the tray is Chucking and tray drive of an optical disc player, characterized in that the loading and unloading. The method according to claim 1, And the second deck is chucked and unchucked as the cam is rotated forward and backward within the chucking drive displacement angle. The method according to claim 1, As the cam is rotated forward and backward within the tray driving displacement angle after the chucking, the driving force of the cam is transmitted to the second gear portion and the second gear portion, and the second gear portion and the second rack, respectively, to chuck the state. Chucking and tray drive of an optical disc player, characterized in that the tray is unloaded and loaded.