JPH09106602A - Disc transfer mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly reduce the number of parts and the assembling man-hour thereby to cut the cost by separately and continuously driving a tray and a traverse unit by one driving device. SOLUTION: In the main body 1 of the disc-driving mechanism, a driving device 4 drives a tray 2 and a traverse unit 3 having a signal-reading part, etc., separately and continuously. A first association means takes in and out the tray 2 in association with the driving device 4, and a second association means moves the traverse unit 3 up and down. A first regulation means for regulating a position of the tray 2 and a second regulation means for regulating the up/down movement of the traverse unit 3 when the tray 2 is stored are arranged in the main body. The second regulation means consists of an engagement part 1b set in the main body, an engagement hook 8b formed integrally with a part of a second coupling means, an urging means 8a for urging the engagement hook which are corresponding to the engagement part 1b, and an opening means for opening the engagement hook. In this constitution, the number of parts and the of assembling man-hour are reduced and the cost is cut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk transport mechanism of an optical disk drive, and more particularly, to cost-effectively drive individual trays and traverse units continuously by one drive. The structure of the linking means having various configurations.

[0002]

2. Description of the Related Art As shown in FIG. 5, a disk transport mechanism of a conventional optical disk drive is a tray in which a disk (not shown) is mounted on a mounting surface 2a and is removably housed in a main body 1. 2, a traverse unit 3 including a signal reading unit that moves up and down facing the tray 2, and a drive device 4 that drives the tray 2 and the traverse unit 3 individually and continuously. A belt 4a for loading and unloading the tray 2 in association with the device 4 and a pulley 5 provided with a first gear 5a, and a pulley 5 and a rotary shaft are shared so as to rotate. An intermediate gear 6 which is axially supported by one end of an arm 8 and which meshes with the first gear 5a, and an end of the arm 8 on a linear extension connecting the intermediate gear 6 and the rotation axis of the pulley 5 to each other. It is pivotally supported to the intermediate gear 6 A second gear 7 to case, same as the third gear 7a which is attached integrally to the second gear 7, the fourth gear sharing the rotating shaft and the Puryi 5 meshed with the third gear 7a 9
When the tray 2 is housed in the main body 1 by the first series engaging means including the first rack 2b that meshes with the fourth gear 9 and is provided on the back surface of the tray 2 and extends in the front-rear direction. Both sides of the tray 2 are slidably held by the main body 1 and the rear end portion of the first rack 2b and the fourth gear 9 are meshed with each other,
The drive device 4 is driven to sequentially link the pulley 5, the first gear 5a, the intermediate gear 6, the second gear 7a, the third gear 7, and the fourth gear 9 to each other. The tray 2 is configured to be conveyed and housed by rotation. Next, with the above configuration, the arm 8 and the arm 8
A semicircular fifth gear 8e provided on one side of the
A moving rod 10 that is provided with a second rack 10a that meshes with 8e and that is slidably held in the left-right direction of the main body 1 and that extends left and right;
The slanted portion 10b and the slanted portion 10b provided on the movable rod 10.
Corresponding to the above, the protrusion provided on the traverse unit 3
When the traverse unit 3 is moved upward by facing the tray 2 housed and positioned in the main body 1 by the moving means composed of 3d, the second gear 7a and the third gear 7 and the rotary shaft Is provided with a locking claw 8b and a release pin 8c at the tip, and the spring 11 locks the locking portion 1b of the main body 1.
Locking lever 8a that is biased toward, and a protrusion that is provided on the back surface of the tray 2 so as to face the release pin 8c.
When the tray 2 is conveyed, accommodated and positioned in the main body 1 by the release means composed of 2d, the release pin 8c is pressed against the biasing force of the spring 11 by the protrusion 2d, The locking claw 8b is released from the locking portion 1b so that the arm 8 can be rotated, and the driving force by the driving device 4 is applied to the pulley 5, the first gear 5a, the intermediate gear 6, and the The second gear 7a, the third gear 7, and the fourth gear 9 are sequentially linked, and the arm 8 is rotated while the rotation of the fourth gear 9 is stopped, and the fifth gear 8e and the second rack The moving rod 10 is moved by 10a, and the traverse unit 3 is moved by the moving means. However, with the above configuration, the locking lever 8a and the spring 11 that constitute the releasing means are
There is a problem in that the number of parts and the number of assembling steps are increased and the cost is disadvantageous because they are individually provided without being integrally formed with the arm.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a disk transport mechanism of an optical disk device which is advantageous in terms of cost by reducing the number of parts and the number of assembling steps. To aim.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a tray on which a disc is placed and which is accommodated in the main body so that the disc can be freely taken in and out, and a tray which faces the tray. A traverse unit including a vertically moving signal reading unit and the like, a drive device for individually and continuously driving the tray and the traverse unit, and a first series engaging means for inserting and removing the tray in association with the drive device, Second linkage means for moving the traverse unit up and down,
A disc transport mechanism for an optical disc device, comprising: a first regulating means for regulating the position of the tray and a second regulating means for regulating the vertical movement of the traverse unit when the tray is accommodated. Includes a first positioning portion integrally formed with a part of the first series engaging means and a part of the second connecting means, respectively, and the second restricting means is integrally formed with the main body. The locking portion, the locking claw integrally formed on a part of the second linking means corresponding to the locking portion, and the biasing means for biasing the locking claw, and the locking means. It is characterized by comprising a releasing means facing each other and releasing the locking claw from the locking portion. The first series engaging means is pivotally supported at one end of a pulley that includes a first gear and is belt driven by the drive device and is driven by the drive device, and one end of an arm that rotates while sharing a rotation shaft with the pulley. An intermediate gear that meshes with the gear, a second gear that is axially supported by one end of the arm on a linear extension connecting the intermediate gear and the rotation axis of the pulley, and meshes with the intermediate gear, and a second gear An integrally attached third gear, a fourth gear that meshes with the third gear and shares a rotation shaft with the pulley, and a fourth gear that meshes with the fourth gear and extends in the front-rear direction provided on the back surface of the tray. It consists of a first rack and when the tray is stored in the main body,
Both sides of the tray are slidably held by the main body, the rear end of the first rack and the fourth gear are meshed with each other, and the drive device is driven to drive the pulley, the first gear and the intermediate gear. Gears, the second gear, the third gear, and the fourth gear are sequentially linked, and the tray is conveyed and accommodated by rotation of the fourth gear, and the tray is positioned by the first positioning portion. It is characterized by having done. Further, the second linking means includes the arm, a semicircular fifth gear provided on one side of the arm, and a second rack meshing with the fifth gear, and the second linking means has a left-right direction of the main body. A movable rod that is slidably held on the left and right, and a moving means that includes an inclined portion provided on the movable rod and a protrusion provided on the traverse unit corresponding to the inclined portion. When the traverse unit is moved upward in opposition to the tray housed and positioned in the main body, the releasing means releases the engaging pawl from the engaging portion and drives the drive device to drive the pulley. And the first gear, the intermediate gear,
The second gear, the third gear, and the fourth gear are sequentially linked, the rotation of the fourth gear is stopped by the first positioning portion, and the arm is rotated to move the fifth gear and the second gear. It is characterized in that the moving rod is moved by a rack, and the traverse unit is moved by the moving means. In addition, the first positioning portion is an arc-shaped rib that is concentric with the fourth gear that is continuously provided at the front end of the first rack that constitutes the first series engagement means, and an outer peripheral surface of the rib. It is characterized in that it comprises a stop pin that is erected at the other end of the arm that faces the second linking means, and that the tray is positioned by the rib and the stop pin. Further, the releasing means includes a releasing pin projecting from the locking claw and a projecting portion projecting from the back surface of the tray facing the releasing pin, and the tray is transported and accommodated in the main body. When the positioning is performed, the release pin is pressed against the urging means by the protrusion, the locking claw is released from the locking part, and the arm is rotatable. Characterize. Also,
When carrying out the tray to the front surface of the main body, the drive device is driven in reverse rotation, and the pulley and the first gear, the intermediate gear, the second gear and the third gear, the The fourth gear is sequentially linked, the rotation of the fourth gear is stopped by the first positioning portion, the arm is rotated, the movable rod is moved by the fifth gear and the second rack, and the movement is performed. Means to move the traverse unit downward, and the first series of engaging means sequentially connects the pulley and the first gear, the intermediate gear, the second gear and the third gear, and the fourth gear, The tray is carried out by the first rack meshed with the fourth gear by rotation of the fourth gear. Further, the tray, the pulley and the first gear, the arm, the intermediate gear, the second and third gears, the fourth gear, the fifth gear, and the first rack, It is characterized in that the movable rod provided with the second rack and the projecting piece corresponding to the movable rod are formed of synthetic resin. Further, the rib is formed to be thinner than the first rack. Further, the first rack and the rib are integrally formed with the tray. Further, the urging means is a plate-shaped spring formed in an arc shape that connects the arm and the locking claw. In addition, the locking portion and the locking claw that locks the locking portion are each formed in an acute angle shape and are locked. Further, the locking claw is formed in an inverted substantially T-shape by the locking claw, an extending portion extending from the other end of the locking claw, and the release pin. Further, the locking claw, the spring, and the fifth gear are integrally formed with the arm. Further, it is characterized in that a plurality of inclined portions of the movable rod and a plurality of protrusions corresponding to the inclined portions are provided respectively.
Further, at least one of the inclined portions of the movable rod is formed in a groove shape that regulates the vertical direction of the projecting piece.
Further, a second positioning portion for positioning the carry-out position of the tray is provided at the front end of the main body and the rear portion of the tray. Further, the second positioning portion is composed of a protrusion protruding from the main body and a tongue piece facing the protrusion and having a substantially L-shape protruding frontward on the back surface of the tray. And Also, a locking piece is hung on a horizontal portion of the tongue piece. Further, the locking piece is slightly separated from the tip of the horizontal portion of the tongue piece. Further, a through hole is provided in the tray so as to face the horizontal portion of the tongue piece. Further, the through hole is expanded to a position slightly separated from the tip of the horizontal portion of the tongue piece forward.

[0005]

With the above-described structure, the number of parts and the number of assembling steps are reduced, and the disk transport mechanism of the optical disk device has a cost-effective structure.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below in detail with reference to the drawings. Figure 1, Figure 2, Figure 3 (A) (B)
In FIGS. 4C and 4B, 1 is an optical disk device main body, 1a is a front panel having an opening for inserting and removing a tray, which will be described later, attached to the front surface of the main body 1, and 1b is the main body. An engaging portion formed at the front end of 1 at an acute angle corresponding to an engaging claw described later, 1c is a protrusion provided at the front end of the main body 1 corresponding to a protruding piece described later, and 2 is the front panel It is a tray made of synthetic resin that is put in and taken out through the opening of 1a.

Reference numeral 2a is a mounting surface for mounting a disc (not shown) on the upper surface of the tray 2. 2b is a first rack that is integrally formed on the back surface of the tray 2 and extends in the front-rear direction. The first rack 2b meshes with a fourth gear described later to convey the tray 2 into the main body 1. It is configured to be housed. 2c is a rib continuously formed in a circular arc shape on the front end of the first rack 2b by concentricity with a fourth gear to be described later. The rib 2c forms a pair with a stop pin to be described later and corresponds to claim 4. The configuration is such that the first positioning portion is formed. Reference numeral 2d denotes a projection integrally provided on the front end of the back surface of the tray 2 so as to face a release pin of a locking claw described later. The projection 2d forms a pair with a release pin of the locking claw described later. Thus, the releasing means corresponding to claim 5 is formed. Reference numeral 2e is a tongue piece integrally formed in a substantially L-shape on the back surface of the tray 2 by opening the front side, and the tongue piece 2e forms a pair with the protrusion 1c, and corresponds to claim 17. The second positioning portion is formed. The tray 2 facing the horizontal portion of the tongue piece 2e is provided with a through hole having an expanded portion a as shown in FIG. 4 (A), so that the tray 2 can be easily integrally formed of synthetic resin. In addition, since the expanded portion a is provided, when the tray 2 is removed from the main body 1 by releasing the second positioning portion, tweezers or the like is inserted from the expanded portion a, The horizontal portion of the protrusion 2e is elastically deformed upward so that it can be easily released. 2f is the tray 2
With a pressing piece integrally formed at the rear of the tray, the pressing piece 2f presses a later-described first detection switch provided on the main body 1 to detect the carry-out position of the tray 2 and drive it to be described later. It is configured to stop the device. 2g is a locking piece that hangs down on the horizontal portion of the tongue piece 2e, and the locking piece 2g hangs down from the tip of the horizontal portion of the tongue piece 2e with a slight clearance, and as described above, the protrusion 1c. And the second positioning portion is formed as a pair. Further, the locking piece 2g hangs from the tip of the horizontal portion of the tongue piece 2e with a slight clearance, so that the tray 2 is released from the main body 1 by releasing the second positioning portion as described above. When detached from the tongue piece 2e, the tweezers or the like inserted from the expansion portion a can be accurately hung on the tip of the horizontal portion of the tongue piece 2e, so that the horizontal portion of the tongue piece 2e can be more easily turned upward. It is configured so that it can be elastically deformed. Incidentally, with the first rack 2b,
Since the rib 2c, the protrusion 2d, the tongue piece 2e, the pressing piece 2f, and the locking piece 2g are integrally formed with the tray 2, the dimension and shape are accurately finished. In addition, the cost is advantageous.

Reference numeral 3 denotes a traverse unit which is opposed to the tray 2 housed in the main body 1 and which is provided with a signal reading portion and the like which will be described later and which moves up and down with a base end portion which will be described later as a fulcrum. Reference numeral 3a is a base end portion which serves as a fulcrum when the traverse unit 3 moves up and down. 3b is a signal reading unit provided in the traverse unit 3, and a disc (not shown) placed on the placing surface 2a by the signal reading unit 3b.
Is configured to read signals from. 3c is a turntable provided on the traverse unit 3, and the turntable 3c is configured to be driven by a spindle motor (not shown), and is placed on the mounting surface 2a (see FIG. (Not shown) is the same turntable 3c,
It is structured such that it is sandwiched and held by a clamp (not shown) provided on the main body 1 so as to face the turntable 3c. As shown in FIGS. 2 and 4 (B), 3d is a protrusion provided on the traverse unit 3 corresponding to an inclined surface of a moving rod described later. The protrusion 3d is a moving rod described later. And the inclined surface is moved in the left-right direction of the main body 1 so that the tray 2 is moved upward, so that when the tray 2 is conveyed and stored in the main body 1, the traverse unit 3 is raised. The turntable 3c is clamped and held by the turntable 3c and a clamp (not shown) provided on the main body 1 so as to face the turntable 3c. In addition, since the protrusion 3d and the inclined surface of the moving rod described later are respectively provided in plural,
The front end of the traverse unit 3 can be raised more accurately with the base end 3a as a fulcrum. Further, at least one of the protrusions 3d is formed in a cylindrical shape and its upper and lower sides are regulated by a groove-shaped inclined surface to be described later, so that the traverse unit 3 will not be moved unless the moving rod and the inclined surface described later move to the left and right. It is configured so that the front end of does not move up and down.

Reference numeral 4 denotes a driving device composed of a motor, and the driving device 4 conveys and accommodates the tray 2 in the main body 1 via a first series engaging means and a second linking means which will be described later. Has become. 4a is the drive unit 4
Is a drive pulley provided on the drive shaft of. Reference numeral 4b is an elastic belt for transmitting the driving force of the driving device 4 from the driving pulley 4a to a first series engagement means and a second linkage means described later. 5 is the drive unit 4
Drive force from the drive pulley 4a to the belt 4b.
Is the pulley that is transmitted by the
5a is integrally attached and is rotatably supported by a support shaft erected on the main body 1. Reference numeral 6 denotes an intermediate gear that meshes with the first gear 5a, and the intermediate gear 6 is rotatably supported by a support shaft erected at one end of an arm to be described later. Reference numeral 7 is a second gear that meshes with the intermediate gear 6. The second gear 7 is integrally provided with a third gear 7a to support the pulley 5, the first gear 5a and the intermediate gear 6. It has a configuration in which it is rotatably supported by a support shaft standing on one end of an arm, which will be described later, on a straight line connecting the axes.

Numeral 8 shares the center of rotation with the spindle of the pulley 5 and the first gear 5a, like the hatched portion shown in FIGS. 2, 3A, 3B and 3C, and the intermediate portion Gear 6
And an elastic synthetic resin arm rotatably supporting the second gear 7 and the third gear 7a. 8a
Is a plate-shaped spring that extends one end of the arm 8 toward the locking portion 1b so as to have a biasing force, and has a locking claw facing the locking portion 1b at the tip of the spring 8a. 8b is integrally formed. The locking claw 8b forms an extending portion 8d extending rearward of the locking claw 8b, and also extends the extending portion 8d.
Further, a release pin 8c is integrally provided upright in a substantially middle portion of the locking claw 8b to form a reverse T-shape, and the tray 2 is transported and housed in the main body 1. At this time, by pushing the release pin 8c rearward with the protrusion 2d,
The locking claw 8b is released from the locking portion 1b, and as described above, the releasing means corresponding to claim 5 is formed. In addition, since the extending portion 8d extending rearward of the locking claw 8b is formed, the release pin is formed by the protrusion 2d.
When the 8c is pushed out backward, the release pin 8c is prevented from tilting backward so that the locking claw 8b can be smoothly released from the locking portion 1b. The fifth gear 8e is an arc-shaped fifth gear continuously formed on the rear side of the arm 8 around the rotation center position of the arm 8. The fifth gear 8e is the first of the moving rods described later. Mesh with Nirac,
The movable rod is configured to be moved in the left-right direction of the main body 1. 8f is a stop pin integrally erected at the other end of the arm 8, and the stop pin 8f forms a pair with the rib 2c when the arm 8 rotates, as described above. The first positioning portion corresponding to claim 4 is formed. Since the stop pin 8f is formed integrally with the arm 8, the size and shape of the stop pin 8f can be accurately finished and the stop pin 8f has a cost-effective configuration. The spring
8a, the locking claw 8b, the release pin 8c, and the extension portion
By forming 8d and the fifth gear 8e integrally with the arm 8, the dimension and shape can be accurately finished, and compared with the case where these are individually provided to the arm 8, The number and the number of assembling steps are significantly reduced, and the configuration is advantageous in terms of cost. Reference numeral 9 denotes a fourth gear that meshes with the third gear 7a. By engaging the fourth gear 9 with the first rack 2b, the tray 2 is conveyed and stored in the main body 1. It has been configured.
With the above configuration, the arm 8 pivotally supports the intermediate gear 6 and the second gear 7 and the third gear 7a, and supports the pulley 5 and the first gear 5a and the rotation center. By rotating the arm 8, the first gear 5a, the intermediate gear 6, the second gear 7 and the third gear 7a, and the fourth gear 9, A planetary gear is formed, and a fourth series engaging means corresponding to claim 2 is formed for meshing the fourth gear 9 with the first rack 2b to convey and store the tray 2 in the main body 1. It has been configured.

The fifth gear 10 is made of synthetic resin.
A moving rod that moves in the left-right direction of the main body 1 in association with 8e. Reference numeral 10a denotes a second rack formed on the movable rod 10 and meshing with the fifth gear 8e.
By engaging the fifth gear 8e with the fifth gear 8e, the moving rod 10 moves in the left-right direction when the releasing claw 8b is released from the engaging portion 1b and the arm 8 is rotated. It is configured to do. 10b is shown in FIGS.
As shown in (B), it is an inclined surface formed on the movable rod 10, and when the movable rod 10 is moved in the direction of the arrow in FIG. 4B, the protruding piece 3d is attached to the inclined surface 10b. Slides along
The second linkage means corresponding to claim 3 is formed such that the tip of the traverse unit 3 is moved upward together with the upward movement of the protrusion 3d, and as described above, the tray is provided. When 2 is conveyed and stored in the main body 1, the turntable 3c provided on the traverse unit 3 that has been raised and a clamp (not shown) provided on the main body 1 so as to face the turntable 3c. The disk (not shown) placed on the tray 2 can be sandwiched and held. 11 is
When the tray 2 is carried out from the inside of the main body 1 by the first detection switch provided inside the main body 1 corresponding to the pressing piece 2f, the first detection switch by the pressing piece 2f at the carrying-out position. The driving device 4 is stopped by pressing 11 and turning it on. 12 is
Corresponding to the movable rod 10, a second detection switch provided in the main body 1 stores the tray 2 in the main body 1 and the movable rod 10 moves to raise the traverse unit 3. The turntable 3c and a clamp (not shown) provided on the main body 1 so as to face the turntable 3c sandwich and hold a disc (not shown) placed on the tray 2. At this time, the driving rod 4 is stopped by pressing the second detection switch 12 by the moving rod 10 to turn it on.

The operation of the disk carrying mechanism according to the present invention having the above structure will be described with reference to the drawings.
With the above configuration, the front panel attached to the main body 1
In the state where the tray 2 is carried out from the opening of 1a,
As shown in FIGS. 1, 2 and 3A, a disc (not shown) is placed on the placement surface 2a, and the drive device 4 is driven by a drive switch (not shown), The belt 4b, the pulley 5, the first gear 5a, the intermediate gear 6, the second gear 7 and the third gear 7a, the fourth gear 8, the first rack 2b by the first series engaging means The tray 2 is conveyed and accommodated in the main body 1.

Subsequently, as shown in FIG. 3 (B), at the accommodating position of the tray 2, the release consisting of the locking claw 8b having the projection 2d and the release pin 8c, the spring 8a and the like. By means of the means, the locking claw 8b is released from the locking portion 1b to make the arm 8 rotatable, and the fourth gear 9
Rotation is stopped, and as shown in FIGS. 3 (B) and 3 (C), the arm 8 is rotated to rotate the rib 2c and the stop pin.
The tray 2 is positioned by the first positioning portion 8f, and the movable rod 10 is moved by the second rack 10a meshed with the fifth gear 8e, and the movable rod 10 is moved.
The front end of the traverse unit 3 is lifted by the moving means composed of the inclined surface 10b provided on the upper surface and the protrusion 3d sliding on the inclined surface 10b, and the turntable provided on the raised traverse unit 3 is raised. A disc (not shown) placed on the tray 2 is sandwiched and held by 3c and a clamp (not shown) provided on the main body 1 so as to face the turntable 3c. With the above configuration,
Since the locking claw 8b having the release pin 8c that constitutes the release means, the spring 8a, etc. are integrally formed with the arm 8, the dimensional shape can be accurately finished, and the number of parts and the assembly can be improved. The disk transport mechanism of the optical disk device can reduce the man-hours significantly and is cost effective.

In the above-described structure, when the tray 2 is carried out from the inside of the main body 1, the disc carrying mechanism according to the present invention drives the driving device 4 in reverse rotation as shown in FIG. 3 (C). As a result, the operation sequence when the tray 2 is stored as described above is reversed, and the pulley 5 and the first gear 5a, the intermediate gear 6, the second gear 7 and The third gear 7a and the fourth gear 9 are sequentially linked, the rotation of the fourth gear 9 is stopped by the first positioning portion, and the arm 8 is rotated to move the fifth gear 8e and the second gear 8e. The moving rod 10 is moved in the opposite direction by the rack 10a, is moved downward with the traverse unit 3 by the moving means composed of the inclined surface 10b and the protruding piece 3d, and the pulley 5 is moved by the first connecting means.
And the first gear 5a, the intermediate gear 6, the second gear 7, the third gear 7a, and the fourth gear 9 are sequentially linked, and the rotation of the fourth gear 9 causes the teeth of the fourth gear 9. The tray 2 is carried out by the combined first rack 2b, and the disk transport mechanism of the optical disk device according to the sixth aspect of the invention is provided.

[0015]

As described above, with the configuration according to the present invention, the number of parts and the number of assembling steps can be greatly reduced, and a disk transport mechanism for an optical disk device that is cost effective can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disc transport mechanism according to the present invention.

FIG. 2 is a plan view of an essential part of a disc transport mechanism according to the present invention.

FIG. 3 is a plan view of a main part showing an operation sequence of the disc transport mechanism according to the present invention, (A) showing a drive unit and a first series engaging means in a state where the tray is carried out, and (B) showing the tray inside the main body. The first series of engaging means, the second interlocking means and the releasing means in the state of being transported and stored in FIG. The releasing means is shown.

FIG. 4 is an explanatory view of a main part of a disc transport mechanism according to the present invention, where (A) is a sectional view of a second positioning portion, and (B) is a front view of an inclined surface of a movable rod and a projecting piece.

FIG. 5 is a plan view of a main part of a disk transport mechanism according to a conventional example.

[Explanation of symbols]

 1 Disc transport mechanism body 1a Panel 1b Locking part 1c Projection 2 Tray 2a Mounting surface 2b First rack 2c Rib 2d Projection 2e Tongue piece 2f Pressing piece 2g Locking piece 3 Traverse unit 3a Base end part 3b Signal reading part 3c Turntable 3d Projection piece 4 Drive device 4a Drive pulley 4b Belt 5 Pulley 5a First gear 6 Intermediate gear 7 Second gear 7a Third gear 8 Arm 8a Spring 8b Locking pawl 8c Release pin 8d Extension part 8e Fifth gear 8f Stop pin 9 Fourth gear 10 Moving rod 10a Second rack 10b Inclined surface 11 First detection switch 12 Second detection switch a Expansion section

Claims (21)

[Claims] 1. A tray in which a disc is placed and accommodated in a main body so that the disc can be taken out and put in freely, a traverse unit including a signal reading unit and the like which moves vertically to face the tray, and the tray and the traverse unit. A driving device that drives individually and continuously, a first series of engaging means that moves the tray in and out by linking with the driving device, a second connecting means that moves the traverse unit up and down, and a tray of the tray when the tray is accommodated. A disc transport mechanism for an optical disc device, comprising: a first regulating means for regulating the position and a second regulating means for regulating the vertical movement of the traverse unit, wherein the first regulating means is the first series engaging means. A first positioning portion integrally formed on a part of the second linking means, and a second positioning means integrally formed on the main body. Corresponding to the stop portion and the locking portion, a locking claw integrally formed on a part of the second linking means, a biasing means for biasing the locking claw, and a facing portion of the biasing means. And a releasing mechanism for releasing the locking claw from the locking portion. 2. The first series engaging means is rotatably supported at one end of a pulley that includes a first gear and is belt-driven by the drive device and is driven by the pulley, and an arm that rotates by sharing a rotation shaft with the pulley. An intermediate gear that meshes with the first gear, a second gear that is axially supported by one end of the arm on a linear extension connecting the intermediate gear and the rotation axis of the pulley, and meshes with the intermediate gear; A third gear integrally attached to the two gears, a fourth gear that meshes with the third gear and shares a rotation shaft with the pulley, and a third gear that meshes with the fourth gear and is provided on the back surface of the tray. A first rack extending in the front-rear direction, and when the tray is housed in the main body, both sides of the tray are slidably held by the main body and the rear end portion of the first rack and the fourth gear To drive the drive device to engage the pulley and the first gear, An intermediate gear, the second gear, the third gear, and the fourth gear are sequentially linked, and the tray is conveyed and accommodated by rotation of the fourth gear, and the tray is positioned by the first positioning portion. The disk transport mechanism according to claim 1, wherein 3. The main body, wherein the second linking means includes the arm, a semicircular fifth gear provided on one side of the arm, and a second rack meshing with the fifth gear. Of the movable rod that is slidably held in the left-right direction and that extends to the left and right, and the moving means that includes the inclined portion provided on the movable rod and the protrusion provided on the traverse unit corresponding to the inclined portion. When the traverse unit is moved upward while facing the tray housed and positioned in the main body, the releasing means releases the engaging pawl from the engaging portion and drives the drive device. The pulley and the first gear, the intermediate gear, the second gear and the third gear, and the fourth gear are sequentially linked, and the rotation of the fourth gear is stopped by the first positioning portion to move the arm. Rotate to move the fifth gear and Serial in the second rack to move said moving rod, disk transfer mechanism of claim 1, wherein it has to move the traverse unit by said moving means. 4. The arc-shaped rib, wherein the first positioning portion is concentric with the fourth gear continuously provided at the front end of the first rack that constitutes the first series engagement means, and 7. A stop pin standing upright on the other end of the arm that constitutes the second linking means so as to face the outer peripheral surface, and the storage position of the tray is positioned by the rib and the stop pin. The disk transport mechanism described in 1, 2, and 3. 5. The releasing means comprises a releasing pin projecting from the locking claw and a projecting portion projecting from the back surface of the tray so as to face the releasing pin and convey the tray into the main body. Then, when housed and positioned, the projecting portion presses the release pin against the biasing means, releases the locking claw from the locking portion, and enables the arm to rotate. The disk transfer mechanism according to claim 1, 3, or 4, wherein 6. When the tray is carried out to the front surface of the main body, the drive device is driven in reverse rotation, and the pulley and the first gear, the intermediate gear,
The second gear, the third gear, and the fourth gear are sequentially linked, the rotation of the fourth gear is stopped by the first positioning portion, and the arm is rotated to move the fifth gear and the second gear. The moving rod is moved by a rack, the traverse unit is moved downward by the moving means, and the pulley and the first gear, the intermediate gear, the second gear and the third gear are moved by the first series engaging means. 4. The tray is carried out sequentially by the fourth gear, and the tray is carried out by the first rack engaged with the fourth gear by rotation of the fourth gear. The described disc transport mechanism. 7. The tray, the pulley and the first gear, the arm, the intermediate gear, the second and third gears, the fourth gear, the fifth gear, and the first gear. A rack, and the movable rod provided with the second rack,
The projecting piece corresponding to the movable rod is formed of synthetic resin, respectively.
The disk transport mechanism described in 5 and 6. 8. The disk transport mechanism according to claim 4, wherein the rib is formed thinner than the first rack. 9. The first rack and the rib are formed integrally with the tray.
The disk transport mechanism described in 2, 3, 4, 5, 6, 7, and 8. 10. The urging means is a plate-like spring formed in an arc shape connecting the arm and the locking claw, and the urging means is a plate-like spring. The disk transport mechanism described in 6, 7. 11. The locking part and the locking claw that locks the locking part are formed in an acute angle shape and are locked, respectively. The described disc transport mechanism. 12. The locking claw is formed in an inverted substantially T-shape by the locking claw, an extending portion extending from the other end of the locking claw, and the release pin. Claims 1, 3, 5,
The disk transport mechanism described in 10 and 11. 13. The locking claw, the spring, and the fifth gear are integrally formed with the arm. , 10, 11,
12. The disk transport mechanism according to item 12. 14. The disk transfer mechanism according to claim 3, wherein a plurality of inclined portions of the movable rod and a plurality of protrusions corresponding to the inclined portions are provided. 15. The disc transport mechanism according to claim 14, wherein at least one of the inclined portions of the movable rod is formed in a groove shape that regulates the vertical direction of the projecting piece. 16. The disc transport mechanism according to claim 1, wherein a second positioning portion for positioning a carry-out position of the tray is provided at a front end of the main body and a rear portion of the tray. 17. The second positioning portion comprises a protrusion projecting from the main body, and a tongue projecting in a substantially L-shape that is open to the front on the back surface of the tray and faces the protrusion. The disk transport mechanism according to claim 16, wherein 18. The disk transport mechanism according to claim 17, wherein a locking piece is hung on a horizontal portion of the tongue piece. 19. The method according to claim 17, wherein the engaging piece is slightly separated from the tip of the horizontal portion of the tongue piece.
The described disc transport mechanism. 20. The disc transport mechanism according to claim 17, wherein a through hole is provided in the tray so as to face the horizontal portion of the tongue piece. 21. The disk transfer mechanism according to claim 17, wherein the through hole is expanded to a position slightly spaced forward from the tip of the horizontal portion of the tongue piece.