JPH0991818A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of a disk reproducing device by providing the device with gears meshed with a rack disposed at a sliding guide and a tuning gear meshed with this gear, smoothing the putting in and out of a tray by the interlocking action of these gear and rack and making it possible to draw out the tray until there are no more overlapping parts with chassis. SOLUTION: A clamping member 110 of the part to relay the drawing out slides in arrow (e) direction while clamping the sliding guide 104 in a C shape when the tray 101 is drawn out to the position where a disk is attachable and detachable. The rack 121 rotates the gears 105, 106 and the turning gears 112 respectively in arrow (g), (f) and (I) directions, thereby sliding the sliding guide 104 in arrow (m) direction. Further, the clamping member 110 is drawn out in the direction (e) to the position where the disk does not remain in the chassis 100. At this time, the rack 121 attains the state of meshing with the gear 105. The rack 121 is meshed with the gear 106 via the turning gear 112 from the state that the rack is meshed with the gear 105 at the time of loading the tray 101 onto the chassis 100 to smoothly house the disk into a casing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc reproducing apparatus in which a rack is provided on a chassis and a tray that can be pulled out from the chassis, and a disc is loaded on the pulled-out tray.

[0002]

2. Description of the Related Art Conventionally, in order to mount a disk, which is a disk-shaped recording medium, on a disk reproducing apparatus, a tray is slid out from a chassis, the disk is mounted on the tray and then slid again to be stored in the tray. The (loading) method is often used. For this loading method, many loading methods that are compact and easy to use have been devised, such as an electric method by driving a motor and a mechanical method using a repulsive force of a spring. However, in recent years, the size of disk devices has become smaller and smaller, so that the size of the motors and springs that make up the disk loading mechanism has become more and more necessary. When they are downsized, sliding during loading of the tray causes a large load on the motor and spring. In other words, if the sliding portion between the tray and the chassis is not smooth, there is a problem that the tray rattles when sliding, and extra force is required, which makes it difficult to load the tray. Further, there is also a problem that the sliding portion is worn due to this.

Therefore, recently, there has been proposed a technique in which a rack is provided on a chassis and a tray, and a drawer relay section composed of a gear meshing with the rack and a sliding guide is formed. Therefore, a disc reproducing apparatus equipped with this technique will be described.
FIG. 6A is a schematic structural diagram of the conventional disc reproducing apparatus after the tray is pulled out, FIG. 6B is a partial cross-sectional view of a drawer relay portion of the conventional disc reproducing apparatus, and FIG. It is a side sectional view of a drawer relay section of the disk reproducing device. 7A is a plan view of the conventional disc reproducing apparatus before the tray is pulled out, and FIG. 7B is a plan view of the conventional disc reproducing apparatus when the tray is pushed out. FIG. 8A is a side sectional view of a drawer relay section when the tray of the conventional disk reproducing apparatus is pulled out, and FIG. 8B is a side sectional view of a drawer relay section when the tray of the conventional disk reproducing apparatus is fully pulled out. is there. 6 (a), (b), (c), FIG. 7 (a),
In FIGS. 8B and 8A and 8B, 300 is a chassis of the disc reproducing apparatus, 301 is a tray on which a disc or the like is placed, 302 is a push rod for pushing the tray 301 out of the chassis 300, and 303 is a push rod. A push spring for operating 302.

320 is a tray from the chassis 300 to the tray 301.
A tray pull-out mechanism for sliding and pulling out the slide guide 304, a second holding member 309 provided at a side end of the tray 301 for holding the slide guide 304 in a C-shape, 31
Reference numeral 0 is a first gripping member which is provided on the inner wall surface of the side portion of the chassis 300 and grips the sliding guide 304 in a C shape. First
A first rack 322 is provided on the gripping member 310, and a second rack 321 is provided on the second gripping member 309 on surfaces facing each other. 305 is provided on the sliding guide 304
A gear that meshes with the first rack of the gripping member 310 and the second rack 321 of the second gripping member 309, 306 is an optical pickup for reading the data of the disc, and 307 is the tray 3.
01 at the predetermined storage position of the chassis 300 and the hook 313.
Lock arm for locking to 308, lock arm 30 for
7 is an eject button for unlocking 7. Of the tray pull-out mechanism 320, the sliding guide 304 and the gear 30
Reference numeral 5 is a drawer relay unit that relays between the chassis 300 and the tray 301.

When the eject button 308 provided on the tray 301 is pressed as shown in FIG. 7A, the claw at the tip of the lock arm 307 is disengaged from the hook 313, and the tray 3 is removed.
01 is unlocked from the predetermined storage position. Subsequently, FIG.
As shown in (b), the push rod 302 pushes the tray 301 out of the chassis 300 by the pulling force of the push spring 303. Extruded tray 301
Is automatically or manually pulled out to a position where the disc can be attached and detached. When the tray 301 is pulled out as shown in FIG. 6A, the second holding member 309 of the tray pullout mechanism 320 shown in FIGS. 6B and 6C moves the sliding guide 304 to the C position.
Hold in a letter shape and slide in the direction of arrow e. Sliding guide 3
04 is provided with a gear 305, and the second gripping member 3
It meshes with the second rack 321 provided at 09 to rotate and smooth the sliding. The gear 305 also meshes with the first rack 322 provided on the first grip member 310, and
The rotation of 5 simultaneously exerts a force for pushing the first gripping member 310 in the direction opposite to the second gripping member 309 (arrow d), so that the tray 301 can be pulled out more smoothly. When the tray 301 is pulled out to the maximum, the first gripping member 310 and the second gripping member 309 slide from the state of FIG. 8A as shown in FIG. 8B and move and stop by the stopper. At this time, the first gripping member 310 and the second gripping member 309 have an overlapping portion dimension h. The overlapping portion h is defined by the gear 305 and the first gripping member 31.
0 and the second gripping member 309 are left in mesh with each other so that the tray 301 can be slid easily when it is stored next. This is because if they are engaged, they can move smoothly. When the tray 301 is pulled out and the disc is loaded or unloaded, the tray 301 is then pushed to a predetermined position, and the claw portion of the lock arm 307 is hooked by the hook 3.
Locked at 13 and storage is complete.

[0006]

However, in the method in which the sliding guide is provided with one gear, the gear is engaged with the rack provided on the gripping member, and the tray is slid out from the chassis, the overlapping portion is formed even at the maximum withdrawal. In addition, there is a problem that it is difficult to reduce the size because a tray having a length obtained by adding the dimension to the disc diameter is required. On the other hand, if the overlapping portion is not provided, the gear and the rack are not meshed well when the tray and the rack are re-engaged, the sliding guide cannot be slid smoothly, and the tray becomes jerky when it is stowed. However, there is also a problem that rattling may occur if a space is provided so that the tray can be moved in the vertical direction for meshing while avoiding this.

Therefore, the present invention solves the above-mentioned conventional problems. The tray can be pulled out beyond the position where the chassis and the tray do not overlap each other, and the length of the tray in the pull-out direction is approximately equal to the diameter of the disc. It is an object of the present invention to provide a disk device that can be downsized to the same size, can easily engage a gear with a rack, can smoothly slide a sliding guide, and has less rattling.

[0008]

In order to achieve the above object, a disk reproducing apparatus of the present invention comprises a slide guide which slides while being held by a first gripping member and a second gripping member in a drawer relay section. It is characterized in that a first gear and a second gear that are provided on the guide and that mesh with the first rack and the second rack, respectively, and a tuning gear that meshes with the first gear and the second gear are provided.

Further, it is desirable to provide a toothed belt provided on the sliding guide and engaged with each of the first rack and the second rack, and a first roller and a second roller for suspending the toothed belt.

[0010]

According to the disk reproducing apparatus of the present invention, a slide guide which is held by the first gripping member and the second gripping member and slides in the drawer relay section, and the first rack and the second rack provided on the slide guide. Since the first gear and the second gear that mesh with each other and the tuning gear that meshes with the first gear and the second gear are provided, the gear and the rack can easily mesh with each other, and the sliding guide can slide smoothly. You can

The disk reproducing apparatus of the present invention is provided with a toothed belt provided on the sliding guide and engaged with each of the first rack and the second rack, and a first roller and a second roller for suspending the toothed belt. Since it has a simple structure, it is possible to arbitrarily set the distance without the overlapping portion, and the sliding guide can be slid smoothly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk reproducing apparatus according to an embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1A is a schematic structural diagram of a disc reproducing apparatus according to an embodiment of the present invention after a tray is pulled out, and FIG. 1B is a portion of a drawer relay section of the disc reproducing apparatus according to an embodiment of the present invention. FIG. 1C is a side sectional view of the drawer relay section of the disc reproducing apparatus according to the embodiment of the present invention. FIG. 2A is a side sectional view of a drawer relay section when the tray of the disc reproducing apparatus according to the embodiment of the present invention is pulled out, and FIG. 2B is a tray maximum of the disc reproducing apparatus according to the embodiment of the present invention. It is a side sectional view of a drawer relay part at the time of drawer. FIG. 3 is a plan view of the disc reproducing apparatus according to the embodiment of the present invention when the tray is fully pulled out. 1 (a), (b), (c), 2 (a), (b) and FIG. 3, 100 is a chassis of a disc reproducing apparatus, 101 is a disc and the like can be mounted and pulled out from the chassis 100. A tray 102, a push rod 102 for pushing out the tray 101 from the chassis 100, and a push spring 103 for operating the push rod 102. 110 is the tray 10
1 is a second gripping member that is provided at the side end of 1 to grip the sliding guide 104 in a C shape, and 111 is a first gripping member that is provided on the inner wall surface of the side portion of the chassis 100 and that grips the sliding guide 104 in a C shape. It is a gripping member. Reference numeral 104 denotes a sliding guide that is gripped and slid by the first gripping member 111 and the second gripping member 110,
Reference numerals 105 and 106 denote the first rack 12 of the first grip member 111.
The first and second gears mesh with the second rack 121 of the second and second gripping members 110, and 112 is a tuning gear that meshes with the first gear 105 and the second gear 106. This first
It is preferable that the gear 105 and the second gear 106 have the same diameter and the same number of teeth, and the tuning gear 112 has a smaller diameter and a smaller number of teeth than the first gear 105 and the second gear 106. Tuning gear 112
When the diameters of the first gear 105 and the second gear 106 are the same as or larger than those, the sliding contact with the first rack 122 and the second rack 121 is not smooth. Further, if the diameter of the tuning gear 112 is too small, it cannot rotate smoothly.

The first grip member 111 has a first rack 122.
However, a second rack 121 is provided on the second grip member 110 in FIG.
As shown in (c), the structure is provided at one end of each C-shape that is diagonally opposed to each other, and the other end can slide without contacting the first gear 105 and the second gear 106. Has become. 120 is a tray pull-out mechanism that slides out the tray 101 from the chassis 100.
Gripping member 111, second gripping member 110, sliding guide 10
4, first gear 105, second gear 106 and tuning gear 11
It is composed of 2 etc. An optical pickup 107 reads the data on the disc. A lock arm 108 locks the tray 101 to the hook 113. Reference numeral 109 is an eject button for unlocking the lock arm 108. Sliding guide 1 of this tray pull-out mechanism 120
04, the first gear 105, the second gear 106, the tuning gear 11
The drawer relay unit relays between the chassis 100 and the tray 101 composed of two or the like.

Next, the operation of the disc reproducing apparatus of this embodiment will be described with reference to FIGS. 1 (a), 1 (b) and 1 (c) and FIG. 2 (a).
A description will be given based on (b) and FIG. FIG. 2A is a side sectional view of the drawer relay portion when the tray is pulled out.
FIG. 7B is a side sectional view of the drawer relay section when the tray is maximally drawn. FIG. 3 is a plan view of the disc reproducing apparatus when the tray is pulled out to the maximum extent. When the eject button 109 attached to the tray 101 is pressed, the claw at the tip of the lock arm 108 is disengaged from the hook 113 and the tray 101 is unlocked. The lock arm 108 pulls the tray 101 to the chassis 1 by the pulling force of the push spring 103.
Push out from 00. The tray 101 pushed out is then automatically or manually pulled out to a position where the disc can be attached / detached. When the tray 101 is pulled out as shown in FIG. 1A, the second gripping member 110 of the pullout relay section shown in FIGS. 1B and 1C still holds the sliding guide 104 in a C-shape. It slides in the direction of arrow e. Second grip member 110
When is slid in the direction e, the second rack 121 provided on the second grip member 110 moves the first gear 105 in the direction of the arrow g to the second position.
The gear 106 rotates in the direction of arrow f, and the tuning gear 112 rotates in the direction of arrow i. At this time, the first gear 105 and the second gear 1
06 tries to push out the first gripping member 111 in the direction of arrow d, but since the first gripping member 111 is fixed to the chassis 100, the sliding guide 104 slides in the direction of arrow m. Here, since the tuning gear 112 serves as a planetary gear and smoothly rotates the first gear 105 and the second gear 106 in synchronization with each other, the first gripping member 111 and the second gripping member 110 are connected to the pull-out relay portions thereof. Thus, the sliding guide 104 can be slid smoothly.

When the second gripping member 110 is further pulled out in the direction of the arrow e, the second gripping member 1 as shown in FIG.
The end of 10 reaches the second gear 106. In this state, a part of the disc on the tray 101 is still stored in the chassis, and the second grip member 110 is further pulled out to the maximum pull-out position. FIG. 2B shows the state of the pull-out relay section when pulled out to the maximum pull-out position. The second rack 12 of the second grip member 110
1 disengages the second gear 106 and meshes only with the first gear 105, and the first rack 122 of the first gripping member 111 disengages the first gear 105 and meshes with the second gear 106. At this time, the respective ends of the first gripping member 111 and the second gripping member 110 stop beyond the position where the overlapping portion disappears. That is, as shown in FIG.
1 can be pulled out over a distance h from the position where the overlapping portion with the chassis 100 disappears. In this state, the disc is mounted on the tray 101 and the second gripping member 11
Even if the load is 0, the second rack 121 holds the first guide because the sliding guide 104 is gripped via the second gear 106.
It does not come off from the gear 105. Next, tray 101
When pushing back to load onto the chassis 100, the meshing of the second rack 121 and the first gear 105 is smooth, and the tuning gear 112 is the first gear 10.
Since the second gear 106 is rotated in synchronism with 5, the meshing with the second gear 106 can be made smooth, and the tray 101 can be stored at a predetermined position without any looseness. After the disc is loaded into or ejected from the tray 101, the tray 101 is pushed to a predetermined position of the chassis 100, and the claw portion of the lock arm 108 is hooked by the hook 1.
Locked at 13 and storage is complete.

Next, another embodiment of the present invention will be described. FIG. 4A is a partial cross-sectional view of a drawer relay unit of a disc reproducing apparatus according to another embodiment of the present invention, and FIG. 4B is a drawer relay unit of a disc reproducing apparatus according to another embodiment of the present invention. FIG. FIG. 5A is a side sectional view of a drawer relay portion when a tray is pulled out of a disk reproducing apparatus according to another embodiment of the present invention, and FIG. 5B is another embodiment of the disk reproducing apparatus according to the present invention. It is a side sectional view of a drawer relay part at the time of maximum drawer of a tray. 4 (a), (b) and 5 (a), (b), 209 is a second gripping member that is provided at the side end of the tray 101 and grips the sliding guide 204 in a C-shape, and 210 is The first gripping member is provided on the inner wall surface of the side portion of the chassis 100 and grips the sliding guide 204 in a C shape. The first grip member 210 includes a first rack 22.
2 and a second rack 221 on the second gripping member 209 in FIG.
As shown in (b), the toothed belts 205 are respectively provided at one ends of the C-shapes which are diagonally opposed to each other, and the toothed belt 205 meshes with the first rack 222 and the second rack 221.

First gripping member 210 and second gripping member 209
The other ends of the two are structured so that they can slide without coming into contact with the toothed belt 205. Reference numeral 204 is a sliding guide that is held by the first holding member 210 and the second holding member 209 to slide, and 211 and 212 are second rollers and first rollers that are provided on the sliding guide 204 and that suspend the toothed belt 205. Is. The first roller 212 and the second roller 211
Have the same diameter, and the size is selected such that the suspended toothed belt 205 meshes with the first rack 222 and the second rack 221. The tray pull-out mechanism 220 includes a first grip member 210, a second grip member 209, a sliding guide 204, and a first grip member 210.
Roller 212, second roller 211 and toothed belt 2
It is composed of 05 etc. The sliding guide 204, the first roller 212, the second roller 211, the toothed belt 205, and the like of the tray pull-out mechanism 220 are a pull-out relay portion between the chassis 300 and the tray 301.

When the tray 101 is pulled out as shown in FIG. 1A, the second gripping member 209 of the pullout relay section 220 shown in FIGS.
Slide in the direction of arrow e while gripping in a letter shape. When the second grip member 209 slides in the e direction, the second grip member 209
The second rack 221 installed on the toothed belt 205
The toothed belt 205 to the first roller 21.
2 is rotated in the direction of arrow g, and the second roller 211 is rotated in the direction of arrow f. At this time, the toothed belt 205 tries to push out the first holding member 210 in the direction of arrow d, but since the first holding member 210 is fixed to the chassis 100, the sliding guide 204 slides in the direction of arrow m. . Here, the first roller 212, the second roller 211 and the toothed belt 205.
Since the planetary gear is constituted by and, the first gripping member 210 and the second gripping member 209 can smoothly slide the sliding guide 204 by the drawer relay portion.

When the second gripping member 209 is further pulled out in the direction of the arrow e, the second gripping member 2 is drawn as shown in FIG. 5 (a).
The end of 09 reaches the second roller 211.
Then, the second grip member 209 is pulled out to the maximum pull-out position. FIG. 5B shows the state of the pull-out relay section when pulled out to the maximum pull-out position. The second gripping member 209 is disengaged from the second roller 211 and the first roller 21
The first gripping member 210 disengages from the first roller 212 and is in mesh with the second roller 205. At this time, the respective ends of the first gripping member 210 and the second gripping member 209 stop beyond the position where the overlapping portion disappears. That is, as shown in FIG.
1 can be pulled out over a distance h from the position where the overlapping portion with the chassis 100 disappears. In this state, the disc is mounted on the tray 101 and the second gripping member 20
Even if a load is applied to the shaft 9, since the first gripping member 210 grips the sliding guide 204, the second rack 221 does not come off from the toothed belt 205. Next, tray 101
When pushing back to load the chassis 100, the second rack 221, the first rack 222 and the toothed belt 205 are smoothly meshed with each other, and the tray 101 can be smoothly stored at a predetermined position. Also, the first
By changing the distance between the roller 212 and the second roller 211, the distance h at which the overlapping portion disappears can be arbitrarily selected. Subsequently, a disc is loaded into or removed from the tray 101, the tray 101 is pushed into a predetermined position of the chassis 100, and the claw portion of the lock arm 108 is hooked by the hook 113.
Locked at and loading is complete.

As described above, the sliding guide can be properly slid without the overlapping portion of the chassis and the tray, and the drawer relay unit can be operated smoothly. Also, since the load during loading is small and the fluctuations are small, the loading drive system can be downsized and the disc playback device can be downsized.
Can be lightweight.

[0021]

As is apparent from the above, according to the present invention, the chassis having the first gripping member provided with the first rack on the inner wall surface of the side portion and the second grip provided with the second rack are provided. Since the tray is provided with the member at the side end and is housed inside the chassis and can be pulled out, and the pullout relay portion for sliding the tray in the chassis, the disc can be easily loaded. In the drawer relay portion, a sliding guide that is gripped and slid by the first gripping member and the second gripping member, a first gear and a first gear that are provided on the sliding guide and that mesh with the first rack and the second rack, respectively. Since the two gears and the tuning gear that meshes with the first gear and the second gear are provided, the tray can be smoothly stored at a predetermined position, and when the tray is pulled out to the maximum, the overlapping portion of the tray and the chassis. Can be pulled out beyond the position where there is no.

Further, since the toothed belt which is provided on the sliding guide and meshes with each of the first rack and the second rack, and the first roller and the second roller which suspends the toothed belt are provided, it is further smooth. The tray can be stored at a predetermined position, and the length of the tray in the pull-out direction can be reduced to be approximately the same as the diameter of the disc.

[Brief description of drawings]

FIG. 1A is a schematic structural view of a disc reproducing apparatus according to an embodiment of the present invention after a tray is pulled out. FIG. 1B is a partial cross-sectional view of a drawer relay portion of a disc reproducing apparatus according to an embodiment of the present invention. ) Side sectional view of a drawer relay section of a disc reproducing apparatus according to an embodiment of the present invention

FIG. 2 (a) is a side sectional view of a drawer relay portion when the tray of the disc reproducing apparatus according to the embodiment of the present invention is pulled out. Side sectional view of relay section

FIG. 3 is a plan view of the disc reproducing apparatus according to the embodiment of the present invention when the tray is fully pulled out.

FIG. 4A is a partial cross-sectional view of a drawer relay section of a disc reproducing apparatus according to another embodiment of the present invention. FIG. 4B is a side sectional view of a drawer relay section of a disc reproducing apparatus according to another embodiment of the present invention.

FIG. 5 (a) is a side sectional view of a drawer relay portion when the tray of the disc reproducing apparatus according to another embodiment of the present invention is pulled out. (B) When the tray of the disc reproducing apparatus according to another embodiment of the present invention is fully pulled out Side sectional view of the drawer relay section

FIG. 6A is a schematic structural diagram of a conventional disc reproducing device after a tray is pulled out. FIG. 6B is a partial cross-sectional view of a drawer relay portion of the conventional disc reproducing device. Cross section

FIG. 7A is a plan view of the conventional disc reproducing apparatus before the tray is pulled out. FIG. 7B is a plan view of the conventional disc reproducing apparatus when the tray is pushed out.

FIG. 8A is a side sectional view of a drawer relay section of the conventional disc reproducing apparatus when the tray is pulled out. FIG. 8B is a side sectional view of a drawer relay section of the conventional disc reproducing apparatus when the tray is fully pulled out.

[Explanation of symbols]

 100, 300 Chassis 101, 301 Tray 102, 302 Push rod 103, 303 Push spring 104, 204, 304 Sliding guide 105 First gear 106 Second gear 107, 306 Optical pickup 108, 307 Lock arm 109, 308 Eject button 110 , 209, 309 Second gripping member 111, 210, 310 First gripping member 112 Tuning gear 113, 313 Hook 120, 220, 320 Tray drawing mechanism 121, 221, 321 Second rack 122, 222, 322 First rack 205 Teeth Attached belt 211 Second roller 212 First roller 300 Body chassis 305 Gear

Claims (2)

[Claims] 1. A chassis provided with a first gripping member provided with a first rack on an inner wall surface of a side portion, and a second gripping member provided with a second rack provided at a side end of the chassis. The tray includes a tray that is housed and can be pulled out, and a drawer relay unit that slides the tray in the chassis. The drawer relay unit includes the first gripping member and the second gripping member.
A sliding guide that is gripped by a gripping member and slides; a first gear and a second gear that are provided on the sliding guide and that mesh with the first rack and the second rack, respectively;
A disc reproducing apparatus comprising a gear and a tuning gear that meshes with the second gear. 2. A chassis having a first grip member provided with a first rack on an inner wall surface of a side portion, and a second grip member having a second rack provided at a side end so as to be pulled out from the chassis. A tray that can be slid, and a drawer relay unit that slides the tray in the chassis, and a slide guide that is held by the first gripping member and the second gripping member and slides on the drawer relay unit; The first is provided on the sliding guide.
A disc reproducing apparatus comprising: a toothed belt that meshes with a rack and the second rack; and a first roller and a second roller that suspend the toothed belt.