CN100538865C - CD-ROM drive - Google Patents

Abstract

A kind of CD-ROM drive, it comprises a housing, a pallet, a rotating disk, a read head, a gear train and an over cap.Pallet is to be equipped on movably in the housing, and rotating disk is embedded on the pallet, and read head is embedded on the pallet movably, and gear train is embedded on the pallet and connects read head, and over cap is equipped on the pallet and cover gear train.Wherein, has a bulge-structure on the surface of over cap corresponding to the non-data field of discs.Pallet also can have a bulge-structure on the surface of over cap.In addition, aforesaid bulge-structure also can be replaced by pad.

Description

CD-ROM drive

Technical field

The invention relates to a kind of data access arrangement, and particularly relevant for a kind of CD-ROM drive.

Background technology

Discs have low price, easy to carry, storage volume big, preserve easily, storage life limit for length, with low costly be difficult for advantage such as infringement with data, so discs general traditional magnetic Storage Media and become the indispensable a kind of light memory medium of modern (opticalstorage medium) of replacement gradually at present.Because being extensive use of of discs, the CD-ROM drive that is used for reading the discs data also becomes the common electronic product of life.

Fig. 1 is shown as a kind of synoptic diagram of known CD-ROM drive.Please refer to Fig. 1, known CD-ROM drive 100 mainly comprises a housing 110, a pallet 120, a rotating disk 130, a read head 140, a gear train (not shown) and an over cap 160.Wherein, pallet 120 is to be equipped on movably in the housing 110, in order to carry various member turnover housings 110.Rotating disk 130, read head 140 all are embedded on the pallet 120 with gear train, and over cap 160 is equipped on the pallet 120 and cover gear train, so do not demonstrate gear train among Fig. 1.When CD-ROM drive 100 carried out data read for a discs 50, discs 50 can be immobilizated on the rotating disk 130 and with rotating disk 130 and do rotation, and gear train then drives read head 140 and moves and read data on the discs 50.

Yet when discs 50 is done when rotation with rotating disk 130, when rocking if CD-ROM drive 100 is subjected to external impacts, discs 50 contacts with pallet 120 or over cap 160 with regard to being easy to generate up and down beat and by scratch.In addition, when the user will be with discs 50 when rotating disk 130 takes off, also regular meeting's application of force is improper and cause discs 50 deflections and contact pallet 120 or over cap 160, can make discs 50 by scratch equally.In case after scratch was created in the data field 52 of discs 50, CD-ROM drive 100 just can't be read data stored on the discs 50.

Be head it off, it is the concentric circles fin 122 in the center of circle that known CD-ROM drive 100 is formed with on the surface of its pallet 120 with rotating disk 130.Wherein, the position of concentric circles fin 122 is the non-information data areas 54 corresponding to discs 50 outer rims.Therefore, even CD-ROM drive 100 is subjected to external impacts and rocks, also have only the non-data field 54 of discs 50 can contact concentric circles fin 122, and then the data field 52 of reduction discs 50 is by the probability of scratch.But known CD-ROM drive 100 does not but have the design of fin on its over cap 160, and therefore when discs 50 touched over cap 160, the data field 52 of discs 50 still can protected lid 160 scratches.Simultaneously, concentric circles fin 122 also can't solve when the user takes discs 50 and cause discs 50 by the problem of scratch.

Because data stored on the discs are very important usually for the user, therefore how to address the above problem to avoid discs to be subjected to the CD-ROM drive scratch to become the problem that needs to be resolved hurrily.

Summary of the invention

The objective of the invention is is providing a kind of CD-ROM drive, is suitable for avoiding discs by scratch.

For achieving the above object, CD-ROM drive provided by the invention comprises:

One housing;

One pallet is equipped in this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head; And

One over cap is equipped on this pallet and covers this gear train, and wherein the outer rim of this discs has a non-information data area, and has a bulge-structure on the surface of this over cap corresponding to this non-data field.

The present invention also provides a kind of CD-ROM drive, also comprises:

One housing;

One pallet is equipped in this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head;

One over cap is equipped on this pallet and covers this gear train; And

At least one pad, wherein the outer rim of this discs has a non-information data area, and this pad deployment is on the surface of this over cap corresponding to this non-data field.

The present invention also provides a kind of CD-ROM drive, comprising:

One housing;

One pallet is equipped in this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head; And

One over cap is equipped on this pallet and covers this gear train, and wherein this pallet has a bulge-structure on the surface of this over cap.

The present invention also provides a kind of CD-ROM drive, comprising:

One housing;

One pallet is equipped in this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head;

One over cap is equipped on this pallet and covers this gear train; And

At least one pad is disposed at this pallet on the surface of this over cap.

Described CD-ROM drive, wherein this pad is point-like or strip pad.

Described CD-ROM drive also comprises:

One control circuit board is disposed in this housing; And

One pliability circuit connects this read head, this rotating disk, this gear train and this control circuit board.

In sum, in CD-ROM drive of the present invention, be on the surface of over cap, to have a bulge-structure, or on the surface of over cap, have a bulge-structure at pallet corresponding to the non-data field of discs.Simultaneously, bulge-structure can be replaced by pad.Therefore, can avoid discs by the CD-ROM drive scratch.

Description of drawings

Fig. 1 is shown as a kind of synoptic diagram of known CD-ROM drive.

Fig. 2 A is shown as the synoptic diagram of the CD-ROM drive of one embodiment of the invention.

The CD-ROM drive that Fig. 2 B is shown as Fig. 2 A removes the synoptic diagram behind the upper shell.

Fig. 3 A～3C is shown as the top view of three kinds of bulge-structures.

Fig. 4 is shown as the synoptic diagram of the CD-ROM drive of another embodiment of the present invention.

Fig. 5 is shown as the synoptic diagram of the CD-ROM drive of yet another embodiment of the invention.

Fig. 6 is shown as the synoptic diagram of the CD-ROM drive of further embodiment of this invention.

Embodiment

For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.

Fig. 2 A is shown as the synoptic diagram of the CD-ROM drive of one embodiment of the invention, and Fig. 2 B is shown as the synoptic diagram after the CD-ROM drive of Fig. 2 A removes upper shell.Please be simultaneously with reference to Fig. 2 A and Fig. 2 B, the CD-ROM drive 200 of present embodiment comprises a housing 210, a pallet 220, a rotating disk 230, a read head 240, a gear train (not shown) and an over cap 260.Housing 210 for example is made up of a upper shell 212 and a lower house 214, and its material is generally metal.Pallet 220 is to be equipped on movably in the housing 210, in order to carry various member turnover housings 210.Rotating disk 230, read head 240 all are embedded on the pallet 220 with gear train, and over cap 260 is equipped on the pallet 220 and cover gear train, so do not demonstrate gear train among Fig. 2 A and Fig. 2 B.When CD-ROM drive 200 carried out data read for a discs 50, discs 50 can be immobilizated on the rotating disk 230 and with rotating disk 230 and do rotation, and gear train then drives read head 240 along the moving radially of discs 50, and reads data stored on the discs 50.

Wherein, discs 50 has a data field 52 and centers on a non-information data area 54 of data field 52, that is the outer rim of discs 50 is non-information data area 54.Present embodiment is characterised in that over cap 260 has a bulge-structure 262 on the surface corresponding to the non-data field 54 of discs 50 outer rims.Because bulge-structure 262 is higher than the surface of over cap 260 other parts; even therefore CD-ROM drive 200 is subjected to external impacts and rocks; also have only the non-data field 54 meeting contact projection structures 262 of discs 50, and then solve the problem of data field 52 protected lid 260 scratches of known discs 50.Generally, the material of over cap 260 is a metal, so bulge-structure 262 can adopt the mode of carrying out punching press (punch) on over cap 260 to form.Certainly, the material of over cap 260 also can be plastics or other suitable material, and bulge-structure 262 is integrally formed on the over cap 260 position corresponding to non-data field 54 equally.

In addition, on the surface of pallet 220 corresponding to non-data field 54, can be formed with as known equally with rotating disk 230 is the concentric circles fin 222 in the center of circle.Please refer to Fig. 2 B, an also configurable sponge sheet 216 and a wear plate 218 on the lower house 214.Concentric circles fin 222, sponge sheet 216 all have discs of preventing 50 by the effect of scratch with wear plate 218.

Moreover CD-ROM drive 200 also can comprise a control circuit board 270 and a pliability circuit 280.Wherein, control circuit board 270 for example is disposed on the lower house 214, and pliability circuit 280 then connects read head 240, rotating disk 230, gear train and control circuit board 270.When read head 240 reads data on the discs 50, control circuit board 270 will be controlled the action of rotating disk 230, gear train and read head 240, and transmit the data signals that read heads 240 are read via pliability circuit 280.

Fig. 3 A～3C is shown as the top view of three kinds of bulge-structures.Please refer to Fig. 3 A～3C, the lip-deep bulge-structure of pallet can be to be point-like (as the bulge-structure 262a of Fig. 3 A) or strip (as the bulge-structure 262b of Fig. 3 B) distribution among the present invention.Wherein, the bulge-structure 262b of Fig. 3 B for example is to be that the center of circle is the concentric circles distribution with the rotating disk.Except the bulge-structure 262a as the circular salient point of Fig. 3 A, bulge-structure also can be the bulge-structure 262c as the strip salient point of Fig. 3 C.Certainly, the distribution mode of above bulge-structure and shape are not in order to limit the present invention only for illustrating.

Fig. 4 is shown as the synoptic diagram of the CD-ROM drive of another embodiment of the present invention.Please refer to Fig. 4, the CD-ROM drive 400 of present embodiment is similar in appearance to the CD-ROM drive 200 of Fig. 2 A, and its difference is that CD-ROM drive 400 also comprises at least one pad 480, and all the other identical components will indicate with the label similar in appearance to Fig. 2 A, and omit its introduction.In CD-ROM drive 400, pad 480 is disposed on the surface of over cap 460 corresponding to the non-information data area 54 of discs 50 outer rims.In other words, in the present embodiment be the bulge-structure 262 that replaces Fig. 2 A with pad 480.Therefore, can when being subjected to external impacts and rocking, CD-ROM drive 400 avoid data field 52 protected lid 460 scratches of discs 50 equally.Certainly, the distribution mode of pad 480 is also similar to the bulge-structure of Fig. 3 A～3C to shape.In addition, pad 480 can adopt wear plate, uses the abrasion of pad 480 afterwards to avoid long-time, and the non-data field 54 that prevents pad 480 scratch discs 50.

Fig. 5 is shown as the synoptic diagram of the CD-ROM drive of yet another embodiment of the invention.Please refer to Fig. 5; the CD-ROM drive 500 of present embodiment is similar in appearance to the CD-ROM drive 200 of Fig. 2 A; its difference is that the pallet 520 of CD-ROM drive 500 has a bulge-structure 524 on the surface of over cap 560, and all the other identical components will indicate with the label similar in appearance to Fig. 2 A, and omit its introduction.Because bulge-structure 524 is higher than surface and next-door neighbour's over cap 560 of over cap 560, therefore when the user takes discs 50, can avoid discs 50 protected lid 560 scratches.The bulge-structure 524 of present embodiment is to be example to be integrally formed on the pallet 520.Certainly, bulge-structure 524 can be that spot distribution or strip distribute, and can be circular salient point or strip salient point, but is not limited thereto.

Fig. 6 is shown as the synoptic diagram of the CD-ROM drive of further embodiment of this invention.Please refer to Fig. 6, the CD-ROM drive 600 of present embodiment is similar in appearance to the CD-ROM drive 500 of Fig. 5, and its difference is that CD-ROM drive 600 also comprises at least one pad 680, and all the other identical components will indicate with the label similar in appearance to Fig. 5, and omit its introduction.In CD-ROM drive 600, pad 680 is disposed at pallet 620 on the surface of over cap 660.In other words, in the present embodiment be the bulge-structure 524 that replaces Fig. 5 with pad 680.Therefore, can when taking discs 50, the user avoid discs 50 protected lid 660 scratches equally.Certainly, the distribution mode of pad 680 is also similar to the bulge-structure 524 of Fig. 5 to shape.In addition, pad 680 can adopt wear plate, thoroughly to prevent pad 680 scratch discs 50.

In sum, in CD-ROM drive of the present invention, over cap has a bulge-structure on the surface corresponding to the non-data field of discs, and perhaps pallet has a bulge-structure on the surface of over cap, also or over cap and pallet all have bulge-structure.Simultaneously, bulge-structure also can be replaced by pad.Therefore, can avoid CD-ROM drive to be subjected to external impacts and when rocking, the protected lid scratch in the data field of discs.And, the protected lid scratch of discs in the time of can avoiding the user to take discs.With this, the protection that the data that provide the user to be stored in discs are more thorough.

Though the present invention describes as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this operator, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when the content that claim defines that look application.

Claims (12)

1. CD-ROM drive comprises:

One housing;

One pallet is equipped in this housing, and passes in and out this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head; And

One over cap is equipped on this pallet and covers this gear train, and wherein the outer rim of this discs has a non-information data area, and has a bulge-structure on the surface of this over cap corresponding to this non-data field.

2. CD-ROM drive as claimed in claim 1 is characterized in that, wherein this bulge-structure is to be point-like or strip distribution.

3. CD-ROM drive as claimed in claim 1 is characterized in that, also comprises:

One control circuit board is disposed in this housing; And

One pliability circuit connects this read head, this rotating disk, this gear train and this control circuit board.

4. CD-ROM drive comprises:

One housing;

One pallet is equipped in this housing, and passes in and out this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head;

One over cap is equipped on this pallet and covers this gear train; And

At least one pad, wherein the outer rim of this discs has a non-information data area, and this pad deployment is on the surface of this over cap corresponding to this non-data field.

5. CD-ROM drive as claimed in claim 4 is characterized in that, wherein this pad is point-like or strip pad.

6. CD-ROM drive as claimed in claim 4 is characterized in that, also comprises:

One control circuit board is disposed in this housing; And

One pliability circuit connects this read head, this rotating disk, this gear train and this control circuit board.

7. CD-ROM drive comprises:

One housing;

One pallet is equipped in this housing, and passes in and out this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head; And

One over cap is equipped on this pallet and covers this gear train, and wherein this pallet has a bulge-structure on the surface of this over cap.

8. CD-ROM drive as claimed in claim 7 is characterized in that, wherein this bulge-structure is to be point-like or strip distribution.

9. CD-ROM drive as claimed in claim 7 is characterized in that, also comprises:

One control circuit board is disposed in this housing; And

One pliability circuit connects this read head, this rotating disk, this gear train and this control circuit board.

10. CD-ROM drive comprises:

One housing;

One pallet is equipped in this housing, and passes in and out this housing movably;

One rotating disk is embedded on this pallet, in order to fixing and rotation one discs;

One read head is embedded on this pallet movably, in order to read the data on this discs;

One gear train is embedded on this pallet and connects this read head, moves in order to drive this read head;

One over cap is equipped on this pallet and covers this gear train; And

At least one pad is disposed at this pallet on the surface of this over cap.

11. CD-ROM drive as claimed in claim 10 is characterized in that, wherein this pad is point-like or strip pad.

12. CD-ROM drive as claimed in claim 10 is characterized in that, also comprises:

One control circuit board is disposed in this housing; And

One pliability circuit connects this read head, this rotating disk, this gear train and this control circuit board.

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