CN1747049A - Disk drive, optical picker and disk box - Google Patents

Abstract

An optical disc driver consists of main body, connection terminal connected with one end of said driver, main shaft, pick up unit of swing arm type and control unit for controlling pick up unit. A light pick up device and relative optical case consists of swing arm hinged with optical disc driver body, tracking exciter using hinge point as reference to form counter side to swing arm, base plate optical system on swing arm, suspension unit fixed on swing arm, focusing lens on suspension unit and refracting lens on swing arm tail end.

Description

CD drive and optical take-up apparatus and optical disk cartridge

(1) technical field

The invention relates to CD drive and optical take-up apparatus and optical disk cartridge, but refer in particular to a kind of CD drive and optical take-up apparatus and the optical disk cartridge of a kind of attaching/detaching on other equipment.

(2) background technology

CD drive is to utilize laser to preserve or the device of played data, can read the pit that forms on the CD or utilizes phase change or utilize optomagnetic etc.

Such CD keeping is easy, and recording capacity is big, and cheap, therefore as the assisted memory device of desk-top computer or notebook computer etc., is used widely.

Recently, be applicable to that the assisted memory device in these mobile devices has also obtained flourish along with the universalness of movable computer etc.; Using now is CF (Compact flash) storage card more widely, that is, and and flash card.Though these flash cards are easy to realize miniaturization, along with the increase of capacity, its price also can promote greatly, therefore not too is fit to widespread use.

In order to solve such problem, the CD drive that people begin one's study miniaturization and can carry, only these devices all are isolated plants, therefore are difficult to be installed in the mobile device.

(3) summary of the invention

Purpose of the present invention will address the above problem exactly, a kind of CD drive and optical take-up apparatus and optical disk cartridge are provided, CD drive among the present invention has only the pcmcia card size, therefore be easily mounted in other equipment, and can be applied in the mobile device as cheap, jumbo assisted memory device.

In order to achieve the above object, the CD drive among the present invention mainly comprises following parts:

A kind of CD drive is characterized in that comprising with lower member:

CD drive main body with the formation of PCMCIA size;

Splicing ear combines with the PCMCIA groove of described CD drive main body one end;

Main shaft is arranged on the described CD drive main body;

Optical take-up apparatus is arranged on the described CD drive main body, and adopts the rocking arm mode;

Control device is controlled described optical take-up apparatus, and links to each other transmission/received signal with described splicing ear.

, also to comprise the optical disk cartridge attaching/detaching device that is arranged on above-mentioned CD drive main body top here, can mounting box type CD by this device.

In addition, the optical take-up apparatus of a kind of CD drive of the present invention is characterized in that comprising with lower member:

The rocking arm that combines with CD drive main body hinge;

With the hinge point is that benchmark is formed at the tracking driver that described rocking arm is tossed about;

Be arranged on the substrate optical system on the described rocking arm;

One end is fixed on the suspender on the described rocking arm;

Laser head is installed in the other end of described suspender, and condenser is installed;

Refracting telescope is arranged on the end of described rocking arm, and will be from the beam reflection of described substrate optical system or described laser head in described laser head or described substrate optical system.And described laser head is formed with the gas suspension surface towards the face of CD.

In addition, above-mentioned laser head is provided with the focus actuator that can utilize distance between electrostatic force adjustment and the CD; And above-mentioned condenser is installed in sowing on the device of above-mentioned focus actuator.

On the other hand, the optical disk cartridge of the CD drive described in the present invention, when the main part of described CD drive met PCMCIA II specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA II groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to CD in the described optical disk cartridge to satisfy following specification requirement: diameter d o be 22mm-40mm, thickness t be 0.9mm following, meet tE0.0051d _o ^4/3Condition.

On the other hand, the optical disk cartridge described in the present invention, when the main part of described CD drive met PCMCIA I specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA I groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to CD in the described optical disk cartridge to satisfy following specification requirement: diameter d o be 22mm-46mm, thickness t be 0.3mm following, meet tE0.0051d _o ^4/3Condition.

On the other hand, the optical disk cartridge of the CD drive described in the present invention, when the main part of described CD drive met PCMCIA II specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA II groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to that the CD in the described optical disk cartridge will satisfy following specification requirement: external diameter 22mm-40mm, internal diameter 2.2mm-8.4mm.

On the other hand, the optical disk cartridge of the CD drive described in the present invention, when the main part of described CD drive met PCMCIA I specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA I groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And be applicable to that the CD in the described optical disk cartridge will satisfy following specification requirement: external diameter is that 22mm-46mm, internal diameter are 3.2mm-8.3mm.

Effect of the present invention:

Tell about as the front, CD drive of the present invention and optical take-up apparatus and optical disk cartridge have following various effect.

At first, the CD drive among the present invention can be installed in the PCMCIA groove, therefore can attaching/detaching in various device, carry out the assisted memory apparatus function.

In addition, than flash card have cheap, preserve advantage capacious.

And, be formed with the gas suspension surface on the laser head of optical take-up apparatus, therefore need not to possess the focus control device that can adjust the rocking arm height; Owing to possess on the laser head focus actuator arranged, can control because of making the focusing error of the generations such as error on the engineering.

On the other hand, the CD in the embodiment of the invention has adopted the minor structure that can be installed on the CD drive of the present invention, and has existing CD or dynamic characteristic and the more superior characteristics of fastening characteristic of being same as.

For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.

(4) description of drawings

Fig. 1 and Fig. 2 are the CD drive structural maps in the embodiment of the invention:

Fig. 1 is the CD drive oblique view;

Fig. 2 is the part exploded perspective view of CD drive among Fig. 1.

Fig. 3 to Fig. 9 is the structural map of optical take-up apparatus among Fig. 2:

Fig. 3 is the optical take-up apparatus oblique view;

Fig. 4 is the substrate optical system outboard profile of Fig. 3;

Fig. 5 (a) is the front view (FV) that Fig. 4 collimates layer;

Fig. 5 (b) is the planimetric map that Fig. 4 collimates layer;

Fig. 5 (c) is the bottom surface figure that Fig. 4 collimates layer;

Fig. 6 (a) is Fig. 4 beam split hologram layer front view (FV);

Fig. 6 (b) is Fig. 4 beam split hologram layer planimetric map;

Fig. 7 (a) is the front view (FV) of Fig. 4 polarizing layer;

Fig. 7 (b) is the planimetric map of Fig. 4 polarizing layer;

Fig. 8 (a) is the servo hologram layer front view (FV) of Fig. 4;

Fig. 8 (b) is the servo hologram layer planimetric map of Fig. 4;

Fig. 8 (c) is the servo hologram layer bottom surface of Fig. 4 figure;

Fig. 8 (d) is the enlarged drawing of the holographic pattern of Fig. 8 (a);

Fig. 9 is the cambial oblique view of Fig. 3 optical element.

Figure 10 is the operating concept figure of displayed map 4 optical take-up apparatus optical systems operation

What Figure 11 was extremely shown in Figure 12 is focus control method:

Figure 11 is the outboard profile of servo holography and focal point control photo detector;

Figure 12 is the planimetric map of focal point control photo detector among Figure 11.

What Figure 13 was extremely shown in Figure 23 is laser head structure and operating process among Fig. 1:

Figure 13 is the exploded perspective view of laser head;

Figure 14 is the cross-sectional side view of optomagnetic laser head bonding state among Figure 13;

Figure 15 is the planimetric map of Figure 13 laser head;

Figure 16 is according to the sectional drawing of tangent line XVI-XVI among Figure 15;

Figure 17 is the lower curtate amplification oblique drawing that indicates Figure 14 Wiring connected state;

But Figure 18 is the embodiment sign picture of other distortion of Wiring connected state;

Figure 19 is the enlarged drawing of elastic supporting member for supporting optical member among Figure 13;

Figure 20 and Figure 21 are the elastic supporting member for supporting optical member zone sign pictures in the different embodiments of the invention;

Figure 22 and Figure 23 are the drawings that optomagnetic laser head effect among Figure 13 is described separately.

Figure 24 to Figure 30 is the pie graph of optical disk cartridge attaching/detaching device:

Figure 24 is the CD drive oblique view;

Figure 25 is the amplification oblique drawing that optical disk cartridge attaching/detaching device is released parts among Figure 24;

Figure 26 is an oblique view of releasing conveying member among Figure 25;

Figure 27 is the oblique view of conveying member padlock components among Figure 25;

Figure 28 is the oblique view that triggers spring members among Figure 25;

Figure 29 is the oblique view of bolt device among Figure 24;

Figure 30 is the oblique view of return utensil among Figure 24.

Figure 31 to Figure 33 is the structural map of optical disk cartridge:

Figure 31 is the exploded perspective view of optical disk cartridge;

Figure 32 is the oblique view of the dimmer open state of Figure 31;

Figure 33 is the oblique view of the dimmer closed condition of Figure 31.

Figure 34 is that optical disk cartridge is installed in the state cross-sectional view on the CD drive.

Figure 35 is the chart that indicates the disc size scope.

Figure 36 is mounted in the sign sectional drawing of the CD on the main shaft.

The symbol description of major part in the accompanying drawing:

1: CD drive 13: spindle motor

14: splicing ear 40: sow device

50: condenser 100: optical take-up apparatus

101: substrate optical system 102: follow the tracks of driver

105: suspender 106: laser head

109: rocking arm 170: refracting telescope

200: optical disk cartridge main body 210: exposed parts

300: dimmer 400: CD

500: optical disk cartridge attaching/detaching device 501: the open parts of dimmer

520: release conveying member 524: the padlock bulge-structure

530: conveying member padlock components 533a: padlock face

535: trigger padlock 540: trigger spring members

542: padlock sheet 550: the latch utensil

560: returning device 561: link member

562: torsion spring 575: agent structure

(5) embodiment

With reference to the accompanying drawings, the embodiment to CD drive of the present invention and optical take-up apparatus and optical disk cartridge is elaborated.

Just, in to explanation of the present invention,, putative function and formation no longer are described in detail in order not influence explanation to main idea of the present invention.

Fig. 1 and Fig. 2 are the CD drive structural maps in the embodiment of the invention; Fig. 1 is the CD drive oblique view; Fig. 2 is the part exploded perspective view of CD drive among Fig. 1.

Just as shown in these figures, but the size of the CD drive 1 in the embodiment of the invention and the pcmcia card of attaching/detaching optical disk cartridge main body 200 be complementary.

Specifically comprise following parts: the CD drive main body 11 that is complementary with the pcmcia card size; Be arranged on the spindle motor 13 on above-mentioned CD drive main body 11 recessed faces 12; Rocker arm type optical take-up apparatus 100; Splicing ear 14 is formed at an end of CD drive main body 11, and is installed in the PCMCIA groove, can pass on electric property signal; Control device (not shown), control optical take-up apparatus 100 and spindle motor 13, and the work of control CD drive 1 for example are being inserted into record material on the CD or are reading record material on the CD.The main body 11 of above-mentioned CD drive is told about as the front, is complementary with the size of pcmcia card.Regulation to the pcmcia card specification has reached specification III now; The embodiment of the invention then meets the specification II of pcmcia card.

The specific requirement of the II specification of pcmcia card is as follows: width (W1) 48mm of length (L) 85.6mm, integral width (W2) 54mm, stepped central portion, two-end thickness (h1) 3.3mm, central portion thickness (h2) 5mm.But the present invention has more than the II specification that is confined to pcmcia card, also goes for the specification of other pcmcia cards.

In addition, but CD drive main body 11 above be provided with the optical disk cartridge attaching/detaching device 500 that can protect inner lid 2 and attaching/detaching optical disk cartridge main body 200.

Fig. 3 to Fig. 9 is the structural map of optical take-up apparatus among Fig. 2; Fig. 3 is the optical take-up apparatus oblique view; Fig. 4 is the substrate optical system outboard profile of Fig. 3; Fig. 5 (a) is the front view (FV) that Fig. 4 collimates layer; Fig. 5 (b) is the planimetric map that Fig. 4 collimates layer; Fig. 5 (c) is the bottom surface figure that Fig. 4 collimates layer; Fig. 6 (a) is Fig. 4 spectroscope hologram layer front view (FV); Fig. 6 (b) is Fig. 4 spectroscope hologram layer planimetric map; Fig. 7 (a) is the front view (FV) of Fig. 4 polarizing layer; Fig. 7 (b) is the planimetric map of Fig. 4 polarizing layer; Fig. 8 (a) is the servo hologram layer front view (FV) of Fig. 4; Fig. 8 (b) is the servo hologram layer planimetric map of Fig. 4; Fig. 8 (c) is the servo hologram layer bottom surface of Fig. 4 figure; Fig. 8 (d) is the enlarged drawing of the holographic pattern of Fig. 8 (a); Fig. 9 is the cambial oblique view of Fig. 3 optical element.

Above-mentioned optical take-up apparatus 100 comprises following parts: the rocking arm 109 that combines with CD drive main body hinge by hinge means 103; With hinge means 103 is that the center is formed at the tracking driver 102 that above-mentioned rocking arm 109 is tossed about; Be arranged on the substrate optical system 101 on the above-mentioned rocking arm 109; One end is fixed on the suspender 105 on the above-mentioned rocking arm 109; Be installed in the laser head 106 of the other end of above-mentioned suspender 105; Refracting telescope 170 (shown in Figure 10) is arranged on the end of above-mentioned rocking arm 109, and the beam path between substrate optical system 101 and the laser head 106 is reflected processing.

Here, above-mentioned driver 102 adopts the VCM driver.

Also comprise among Fig. 2: toughness printed circuit board (PCB) 107 and CD fixed part 108.

So-called VCM (VCM:Voice Coil Motor) is exactly the drive unit that utilizes Fu Laiming lefft-hand rule (F=Bli), when promptly being in the conductor upper reaches electric current in the magnetic field, produces the principle of magnetic force; Owing to adopted and the identical mode of audio frequency sound amplifier (Loud Speaker), so VCM also is called voice coil motor.The VCM driver can move to required CD position with laser head 106 by rotation rocking arm 109.

Aforesaid substrate optical system 101 is made up of following parts: optical element cambium layer 150; The tab-like space 152 that is formed on the above-mentioned optical element cambium layer 150; The stacked servo hologram layer 140 that is formed at 152 tops, above-mentioned space; The stacked polarizing layer 130 that is formed at above-mentioned servo hologram layer 140 tops; The stacked beam split hologram layer 120 that is formed at above-mentioned polarizing layer 130 tops; The stacked collimation layer 110 that is formed at above-mentioned beam split hologram layer 120 tops.Above-mentioned layer structure (110-150) is formed centrally in the catoptrical light wave guide shaft 161 of guided wave CD being.

The top of above-mentioned optical element cambium layer 150 is provided with light-emitting component 153; The light-emitting device of above-mentioned light-emitting component 153 is provided with reflecting body 154 (the 154th, photo detector also is a reflecting body simultaneously), makes the refraction of optical beam that light-emitting device sends and along 161 irradiations of light wave guide shaft.And the top of above-mentioned optical element cambium layer 150 then disposes most photo detectors 154,157-160; For the signal with above-mentioned photo detector 154,157-160 is communicated to control device, also be provided with distribution 155 and contact pins 156 on the above-mentioned optical element cambium layer.

Here, above-mentioned light-emitting component 153 adopts laser diode.

Above-mentioned photo detector 154,157-160 are made up of following parts: focal point control is with the 1st focal point control photo detector 158a and the 2nd focal point control photo detector 158b; Control is followed the tracks of with the 1st tracking Control photo detector 159a and the 2nd tracking Control photo detector 159b; Detect input photo detector 157a, the 157b of CD recording signal; The light-emitting component control photo detector 160 of control light-emitting component 153 intensity.The position of above-mentioned photo detector 154,157-160 determines according to the structure of servo hologram layer 140 and beam split hologram layer 120, therefore earlier the structure of servo hologram layer 140 and beam split hologram layer 120 is elaborated.

Above-mentioned servo hologram layer 140 is constructed as follows: the body layer of being made up of disk glass 141; Be positioned at optical element cambium layer 150 opposites (hereinafter to be referred as ' following ') of aforementioned body layer 141, and handle the light absorbing zone 142 that forms through coating; Be formed at the servo hologram pattern 144-145 of aforementioned body layer 141 upside one end; Light-emitting component control reflection holography pattern 146, the reflecting surface on the above-mentioned servo hologram layer 140 makes the refract light of reflection shine above-mentioned optical element cambium layer 150 towards above-mentioned optical element cambium layer 150.

Above-mentioned servo hologram pattern 144,145 is divided into the 1st servo hologram pattern 144 and the 2nd servo hologram pattern 145; The 1st servo hologram pattern 144 passes through different gratings (grating) at interval with the 2nd servo hologram pattern 145, adjusts different refract light focal lengths; And, form different refract light focal positions by different raster shapes.Among the 1st embodiment of the present invention, servo hologram pattern 144,145 separated 2, and the texture of hologram pattern 144,145 has formed curve separately; In addition, can also be divided into most, and the texture of hologram pattern also can form straight line.

In the above-mentioned light absorbing zone 142, nickel or nickel oxide have formed the thickness of tens nanometer, prevent because some unwanted signals of reflection incide the phenomenon on photo detector 157-160 and the light-emitting component 153 with this.In addition, be formed with guided wave pore 143a-143e on the above-mentioned light absorbing zone 142, can be by shining the light that light on each photo detector 157-160 and light-emitting component 153 are dispersed out.

Above-mentioned reflection holography pattern 146, the reflected refraction optical focus position that its light of emitting of reflection light-emitting component 153 forms, different with the above-mentioned the 1st servo hologram pattern 144 and the 2nd servo hologram pattern 145.And, in order to reflect the more light beam of volume, can form metal film above the above-mentioned reflection holography pattern 146.But, if utilize the reflection of glass self, accommodation reflex hologram pattern 146, and form the reinforcement interference, even also can reach identical purpose without metal film.

Above-mentioned polarizing layer 130 is provided with plane of polarisation 132,133; This plane of polarisation be formed at according to the light by disk glass 131 and above-mentioned beam split hologram pattern form ± 1 refract light is through the disk glass below of position.

But above-mentioned plane of polarisation 132,133 is made up of the polarity grating polarity elements such as (grating) that linear polariscope or polarisation separate.Two above-mentioned plane of polarisations 132,133, its polarization direction forms the right angle mutually.And, do not form plane of polarisation on the position that polarizing layer 130 and light wave guide shaft 161 intersect.

Above-mentioned beam split hologram layer 120 is by disk glass 121 and be formed at the upper end of disk glass 121 and the beam split hologram pattern 122 in the subregion on light wave guide shaft 161 crossover locations is formed.Above-mentioned beam split hologram pattern 122 is formed by most gratings.Above-mentioned grating is formed by ball-type or tipper.

Above-mentioned collimation layer 110 is by forming with lower member: disk glass 111; Collimation lens 112 is the center with the light wave guide shaft 161 of above-mentioned collimation layer, is formed at above-mentioned disk glass 111 tops, the parallel beam refraction that above-mentioned light-emitting component 153 is dispersed; Handle through coating, be formed at the light absorbing zone 113 below the above-mentioned collimation layer 110.

Above-mentioned light absorbing zone 113 is made of the nickel or the nickel oxide of tens nanometer thickness; And the position that the optical waveguide beam warp is crossed is provided with the light wave guide hole 114 that does not form above-mentioned absorption layer 113.Above-mentioned light absorbing zone 113 can prevent the low-light that causes because of reflection, therefore can dwindle the probability that produces noise.

Above-mentioned collimation lens 112 is that (reflow) engineering that refluxes again forms by after disk glass 111 is divided into multilayer carries out etch processes.

Above-mentioned the 1st focal point control photo detector 158a is formed at, and focuses on the position of above-mentioned optical element cambium layer 150 because of 1 refract light of the above-mentioned the 1st servo hologram pattern 144 refraction formation; Above-mentioned the 1st tracking Control photo detector 159a is formed at, and focuses on the position of above-mentioned optical element cambium layer 150 because of-1 refract light of the above-mentioned the 1st servo hologram pattern 144 refraction formation.

And above-mentioned the 2nd focal point control photo detector 158b is formed at, and focuses on the position of above-mentioned optical element cambium layer 150 because of 1 refract light of the above-mentioned the 2nd servo hologram pattern 145 refraction formation; Above-mentioned the 2nd tracking Control photo detector 159b is formed at, and focuses on the position of above-mentioned optical element cambium layer 150 because of-1 refract light of the above-mentioned the 2nd servo hologram pattern 145 refraction formation.

In addition, above-mentioned light-emitting component control photo detector 160 is configured in, and because of above-mentioned light-emitting component control shines on the above-mentioned optical element cambium layer 150 with reflection holography pattern 146 beam reflected, forms on the position of refract light.

Above-mentioned input photo detector 157a, 157b are configured in, and light forms ± 1 refract light by beam split hologram pattern 122 back, focus on position on the above-mentioned optical element cambium layer 150 by plane of polarisation 132,133 again.

Have the substrate optical system of said structure, its principle of work is as follows.

Figure 10 is the work concept map that shows the optical take-up apparatus optical system workflow in the example of the present invention.

Recording operation on the CD is identical with existing optical take-up apparatus, but playing process is different.When light-emitting component 153 divergent beams, the light of dispersing, shines on the CD 400 successively by refracting telescope 170, the condenser 50 of reflection configuration along light wave guide shaft 161 again.Shine the light on the CD, because of being recorded in the signal on the optomagnetic material of CD, according to kerr rotation (rotation) phenomenon, its polarization direction changes; Then, reflected light shines in the substrate optical system by condenser 50, refracting telescope 170.

Incide the light beam in the substrate optical system, after collimation lens 112 refractions,, reflected simultaneously and interference effect, be split into most light beams again by beam split hologram pattern 122.In the divided light beam, ± 1 refract light 122a is detected by input photo detector 157a, 157b by behind the plane of polarisation 132,133.Above-mentioned plane of polarisation 132,133 because polarization direction is vertical mutually, if detect the light by these plane of polarisations 132,133 separately, and calculates its ratio, can detect the irradiates light polarization direction extent of refraction that takes place because of the tracer signal on the CD.Therefore, by calculating the signal that above-mentioned input photo detector 157a, 157b detect, can play the signal that is recorded on the CD.

On the one hand, in the light beam by above-mentioned beam split hologram pattern 122, the light beam along 161 irradiations of light wave guide shaft incides in the servo hologram pattern 144,145, and the influence that is reflected and interfere, and is split into most light beams.In the divided light beam, 1 the refract light 144a that forms because of the 1st servo hologram pattern 144 refractions incides among the 1st focal point control photo detector 158a, and-1 time refract light 144b then incides among the 1st tracking Control photo detector 159b; 1 the refract light 145a that forms because of the 2nd servo hologram pattern 145 refractions incides among the 2nd focal point control photo detector 158b, and-1 time refract light 145b then incides on the 2nd tracking Control photo detector 159b.

Make up above-mentioned the 1st focal point control photo detector 158a and the 2nd focal point control photo detector 158b signal, the focus of control condenser 50; Make up the signal of above-mentioned the 1st tracking Control photo detector 159b and the 2nd tracking Control photo detector 159b, carry out tracking Control.

Focus control method uses spot diameter to survey SSD (spot size detection) method, and tracking and controlling method then uses (push-pull) method of recommending.But, except that said method, can also control focus and tracking by additive method, and this belongs to also in the extent of competence of the present invention.

What Figure 11 was extremely shown in Figure 12 is focus control method; Figure 11 is the outboard profile of servo holography and focal point control photo detector; Figure 12 is the planimetric map of focal point control photo detector among Figure 11.

As telling about the front, the 1st servo hologram pattern 144 and the 2nd servo hologram pattern 145 focal length of refract light separately are different mutually.In other words, the above-mentioned the 1st servo hologram pattern 144 is because at interval than broad, so focal point F 1 distance is also long relatively; And the 2nd servo hologram pattern 145 is closeer owing to the interval, so its focal point F 2 distances are also short relatively.Above-mentioned the 1st focal point control photo detector 158a and above-mentioned the 2nd focal point control photo detector 158b are formed on the intermediate point of above-mentioned focal point F 1 and F2 under normal condition.

When the focus between condenser 50 and the CD 400 was accurately coincide, as Figure 12 a, light beam focused on focal point control photo detector 158a, the 158b.Therefore, the Fe value that is defined as following mathematical expression 1 will become 0.At this moment need not to control the operation of focus.

[mathematical expression 1]

Fe＝(A1+A3+A5)-(A2+A4+A6)

When zoomed out gradually at the interval between condenser 50 and the CD 400, light beam focused on as Figure 12 b, and the Fe value can be greater than 0; At this moment, start driver 240 with condenser 50 CD 400 that furthers.

And when further in the interval between condenser 50 and the CD 400, light beam focuses on as Figure 12 c, and the Fe value can be less than 0; At this moment, starting driver 240 zooms out condenser 50 in CD 400.

In the tracking and controlling method, if the focus point on the CD is partial to a side of CD pit, at this moment shining the 1st tracking Control photo detector 159a will be different with amount of beam on the 2nd tracking Control photo detector 159b; Can be by the control of tracking error, make that to shine the 1st tracking Control photo detector 159a identical with amount of beam on the 2nd tracking Control photo detector 159b.

What Figure 13 was extremely shown in Figure 23 is the structure and the operating process of laser head 106 among Fig. 1; Figure 13 is the exploded perspective view of laser head; Figure 14 is the cross-sectional side view of optomagnetic laser head bonding state among Figure 13; Figure 15 is the planimetric map of Figure 13 laser head; Figure 16 is according to the sectional drawing of tangent line XVI-XVI among Figure 15; Figure 17 is the lower curtate amplification oblique drawing that indicates Figure 14 Wiring connected state; But Figure 18 is the embodiment sign picture of other distortion of Wiring connected state; Figure 19 is the enlarged drawing of elastic supporting member for supporting optical member among Figure 13; Figure 20 and Figure 21 are the elastic supporting member for supporting optical member zone sign pictures among the different embodiment of this invention; Figure 22 and Figure 23 are the drawings that optomagnetic laser head effect among Figure 13 is described separately.

As shown in the figure, the laser head 106 in the embodiment of the invention is made up of following parts: slide block 20, but in pitching under the effect of air hydrodynamic on CD 400; Focus actuator is utilized the distance between electrostatic force adjusting condenser 50 and the CD 400.

Above-mentioned focus actuator is constructed as follows: stationary installation 30 along the thickness direction of slide block 20, is distributed in the upper end of slide block 20; Sow device 40, can with stationary installation 30 relative motions, and support light beam accumulated in condenser 50 on the CD 400; Fixed electorde device 32a, 32c and sow moving electrode device 41 are formed at stationary installation 30 separately and sow on the device 40 by the retrofit technology, and utilize the electrostatic force of generation to make to sow device 40 and move about; The suspender 48 of supporting adn fixing device 30.

Slide block 20 adopts the platy morphology of almost right angles, but but also adopted the glass material of transmitted light; Its bottom is formed with gas suspension surface 22a, when CD 400 drives, under the effect of air hydrodynamic, may float on above the CD 400.Slide block 20 bottoms one side is formed with embedded coil embedded device 22b from the bottom surface along thickness direction, can bury the magnetic coil 23 of magnetization CD 400 among this coil embedded device 22b underground; Coil embedded device 22b also is provided with transparent filling shaped device 22c, combines with magnetic coil 23, has comprised transparent material condensate, Si02, any one compaction material among the Si3N4, and parallel with the bottom surface of slide block 20.Magnetic coil 23 is the parts that form concentric circles by methods such as the gold-plated processing of metal, and is connected with the side electrode pad 25 mutual electric property that are formed at slide block 20 sides by modes such as sputters.

It is tabular that stationary installation 30 forms quadrilateral, and link to each other with the top of slide block 20; And, be aligned in sequence with top fixed electorde device 32a, bottom fixed electorde device 32c and will be as top silicon material parts of sowing device 40 and bottom silicon material parts across insulation course 32b along thickness direction.One side of stationary installation 30 runs through to be formed with sows device housing piece 34, and that can accommodate quadrangle form sows device 40; Sow the marginal portion of device housing piece 34, its top by the retrofit technology be formed with top fixed electorde device 32a and be configured in the below, and with top fixed electorde device 32a across the bottom of insulation course 32b fixed electorde device 32c; These electrode assemblies and sow between the device 40 and produce electrostatic force make and sow device 40 and move about along thickness direction.

Each fixed electorde device 32a, 32c are along each limit of sowing device housing piece 34, and possessing has a plurality of top fixed fingers 33a and bottom fixed fingers 33c, and these fixed fingers and each limit meet at right angles, and keep certain distance each other; One end of stationary installation 30 tops is formed with top fixed electorde pad 35a and bottom fixed electorde pad 35b by modes such as sputters, provides power supply to top fixed electorde device 32a and bottom fixed electorde device 32c separately by these electrode pads.

Said fixing electrode pads 35a and bottom fixed electorde pad 35b link to each other by the solder splashes associated methods (Solder ball bonding) that utilizes the external power source that connects power supply from the outside to connect pad 38 and solder splashes 39a as shown in figure 17; And as shown in figure 18, also utilize electric wire 39b to be connected.

Along the cross direction of stationary installation 30, between top fixed electorde pad 35a and the bottom fixed electorde pad 35b, be formed with across stationary installation 30 and insulating space 36 and sow moving electrode pad 35c; Sow moving electrode pad 35c with run through stationary installation 30 through elastic supporting member for supporting optical member 45 with to sow the circuit that device 40 electric property are connected continuous; The one side is utilized the solder splashes associated methods, is connected pad 38 electric property connections with external power source; Here the said external power supply connects the below that pad 38 is formed at suspender 48.

The upper end of sowing moving electrode pad 35c disposes an end and is fixedly supported on the fixation construct, suspender 48 that can resiliency supported stationary installation 30; The other end of suspender 48 interfixes by the binding layer of solder splashes combination and stationary installation 30 upper ends, and above-mentioned suspender 48 can increase the degree of freedom of stationary installation 30.

On the one hand, sow device 40 and can move, and its thickness is less than above-mentioned electrode assembly along the thickness direction of top fixed electorde device 32a and bottom fixed electorde device 32c; During plane projection, almost become the square shape.Each marginal portion be formed with pectination top fixed fingers 33a and, sow finger piece 43 by a plurality of pectinations that the retrofit technology forms; And this sows finger piece 43 and can be inserted between the fixed fingers 33c of bottom, and can mutually insulated.

The top of sowing device 40 is formed with lens mount 42, and the microminiature condenser 50 that utilizes MEMS (Micro Electrmechanical System) or micro-machine method retrofit fabrication techniques such as (Micromaching) here can be installed; Middle section also runs through and is formed with light by the hole, and the light that sees through condenser 50 can pass through this hole.

Each limit middle section of sowing device 40 is formed with elastic supporting member for supporting optical member 45, can will sow device 40 resiliency supported on stationary installation 30.Here, each elastic supporting member for supporting optical member as shown in figure 19, have the thickness identical and the width (W1) of elastically deformable, perhaps as shown in figure 20, can constitute the stationary installation 30 and the elastic supporting member for supporting optical member 55 of sowing the film morphology of the integrated connection of the top of device 40 or bottom surface with sowing device 40.In addition, as shown in figure 21, a side and stationary installation 30 connect as one, and opposite side then forms the bending of several roads, have constituted and sow the labyrinth form elastic supporting member for supporting optical member 65 that device 40 connects as one.

Because said structure, when CD 400 rotations drove, stationary installation 30 swam in the surface of CD 400 under the pitching power effect that slide block 20 gas suspensions surface 22a structure produces; Energized on the magnetic coil 23 just can be magnetized CD 400 surfaces.At this moment, the light beam that irradiation is come out in the never illustrated light source shines and reflects in CD 400 surfaces by condenser 50, with the information of this reading and recording on CD 400.

On the one hand, because factors such as the vibrations of CD 400 drive units and CD 400 record surfaces self flatness, when change takes place in the distance between condenser 50 and CD 400 record surfaces, top fixed electorde device 32a and bottom fixed electorde device 32c sow the electrostatic force of device 40 with sowing to produce to move about in the moving electrode device 41, and carry out revisal, the focus of condenser 50 accurately is formed on the record surface of CD 400.For example, when the distance between condenser 50 and CD 400 record surfaces furthered gradually, energized increased the electrostatic force that acts on top fixed electorde device 32a and sow between the moving electrode device 41 gradually; At this moment, sow device 40 as shown in figure 22, move to top fixed electorde device 32a side, and form on CD 400 record surfaces can accurate recording and the luminous point of broadcast information along thickness direction.

On the one hand, because the trickle distortion of CD 400, when seeing through the optical axis relative tilt of condenser 50, mutually insulated between top fixed electorde device 32a and the bottom fixed electorde device 32c, and the suitable potential difference (PD) of the last formation of each finger piece 33a, 33c of above-mentioned top fixed electorde device 32a and bottom fixed electorde device 32c; Work as energized, when formation can compensate the potential difference (PD) of each finger piece 33a, 33c distortion, as shown in figure 23, sow device 40 and can cause displacement corresponding to each potential difference (PD), and condenser 50 forms the constant inclination oblique angle θ of institute with rotation CL, it is vertical that the optical axis and the record surface of the distortion P of CD 400 are formed, and therefore can accurately read or recorded information.

Figure 24 to Figure 30 is the pie graph of optical disk cartridge attaching/detaching device; Figure 24 is the CD drive oblique view; Figure 25 is the amplification oblique drawing that optical disk cartridge attaching/detaching device is released parts among Figure 24; Figure 26 is an oblique view of releasing conveying member among Figure 25; Figure 27 is the oblique view of conveying member padlock components among Figure 25; Figure 28 is the oblique view that triggers spring members among Figure 25; Figure 29 is the oblique view of bolt device among Figure 24; Figure 30 is the oblique view of return utensil among Figure 24.

Just as shown in these figures, the optical disk cartridge attaching/detaching device of the CD drive among the present invention comprises following parts: attaching/detaching apparatus main body structure 575, one end combines with CD drive main body hinge, and is inserted between the latched position of playing in the drive body and can rotates in the release position that can insert optical disk cartridge and optical disk cartridge; Support the ribs 571,572 of aforementioned body structure 575 both sides; Top panel spring 510 is pushed the optical disk cartridge that fix/is inserted in above the aforementioned body structure 575 downwards; The open parts 501 of dimmer tab-likely to the inside from the side are formed in agent structure 575, and can open the dimmer that is inserted into optical disk cartridge; Ejecting device is released the optical disk cartridge that is inserted into from agent structure 575; Latch utensil 550 is arranged on the CD drive main body, and aforementioned body structure 575 is fixed on latched position; Returning device 560, one ends are arranged on the CD drive main body, and the other end then is arranged on the ribs 571, and agent structure 575 is returned to the release position.

Above-mentioned top panel spring 510 structures are as follows: main board 511; Project upwards a end, and be pressed on 2 sway braces 512 of top panel 576 downsides in aforementioned body plate 511.

Above-mentioned ejecting device then is made up of following parts: release conveying member 520, be incorporated into the side of aforementioned body structure 575, and can move between the installation site of fixing disc box and release location; Conveying member padlock components 530, one ends are the laminated springs that are fixed on agent structure 575 sides, and above-mentioned release conveying member 520 is fixed on the installation site; Trigger spring members 540,, remove the locking state of above-mentioned release conveying member 520 on conveying member padlock components 530 along with aforementioned body structure 575 is returned to the process of release position.

Comprise following parts in the above-mentioned release conveyer 520: main board 521, form gathering sill 525,526, make the slide 513 of agent structure 575 insert/slide; Release bulge-structure 522, outstanding to the inside from the end of main board 521, with the edge of this supporting CD box, and release optical disk cartridge; Padlock bulge-structure 524 protrudes in the outside of main board 521, makes to release conveying member 520 and be transferred part padlock components 530 in the installation site and pin; Spring padlock bulge-structure 523 is bent downwardly formation from the end of above-mentioned padlock bulge-structure 523; Retracing spring 527, one ends are connected with above-mentioned spring padlock bulge-structure 523, and the other end then is connected with the spring padlock bulge-structure 514 of agent structure 575.

Above-mentioned conveying member padlock components 530 structures are as follows: an end 532 of laminated spring 531 is fixed on the agent structure 575; Padlock face 533a projects upwards in the other end of laminated spring 531, and padlock bulge-structure 524 is locked on the installation site of releasing conveying member 520; Conveying member padlock 533 forms the downward-sloping dip plane 533b that slides in the upper end of above-mentioned padlock 533; Trigger padlock 535, in the lower end of conveying member padlock 533, horizontal direction is outstanding laterally forms.

Above-mentioned triggering spring members 540 structures are as follows: laminated spring 541, one end 541a are fixed on the CD drive main body, and bend to the mountain peak shape; Padlock sheet 542, the tab-like other end side that is formed in above-mentioned laminated spring 541.

The top 542a of above-mentioned padlock sheet 542 is from the downward-sloping formation in laminated spring 541 sides; And then form padlock face 542b below, pin above-mentioned triggering padlock 535 to horizontal direction.

Above-mentioned bolt device 550 structures are as follows: padlock hook 552, and hinge is incorporated on the CD drive, and can rotate in padlock groove (not shown) the padlock position that is formed at top panel 576 inboards with between not by the releasing position of padlock groove (not shown) pinning; Retracing spring 553, one ends are connected on the above-mentioned padlock hook 552, and the other end links to each other with padlock post 554 on protruding in CD drive, makes padlock link up with 552 and is returned to the padlock position; Latch 551 can slide in the CD drive front, and links to each other with padlock hook 552, the user is moved to padlock hook 552 remove the position.

Above-mentioned returning device 560 structures are as follows: link member 561, one ends can slide on ribs 571, and other end hinge is incorporated on the CD drive main body; Torsion spring 562, one ends are connected in drive body one side of above-mentioned link member 561, and the other end then is fixed on the drive body, and the rotation link member is that ribs 571 is positioned at the release position.

Figure 31 to Figure 33 is the structural map of optical disk cartridge; The 31st, the exploded perspective view of optical disk cartridge; Figure 32 is the oblique view of the dimmer open state of Figure 31; Figure 33 is the oblique view of the dimmer closed condition of Figure 31.

As shown in the figure, the optical disk cartridge structure among the present invention is as follows: optical disk cartridge main body 200, inside are equipped with rotatable CD 400, and expose the center 410 of this CD 400 and corresponding to the part surface of optical take-up apparatus motion path by the portion of exposing 210; Dimmer 300 can slide on optical disk cartridge main body 200, opens/close the portion of exposing 210 that states with this.

Dimmer 300 structures are as follows: be equivalent to the corresponding body part 320 of part exposed face that CD 400 light pick up motion path; Expose the center guard block 310 of portion corresponding to the center; CD part guard member 330, the exposed face of covering/protection except that being equivalent to part exposed face that CD 400 light pick up motion path.

Said structure can minimize the rotation driving that is used for CD and optical take-up apparatus and follow the tracks of the CD that drives and expose degree; Because said structure, the optical disk cartridge among the present invention can prevent the inflow of external contamination material effectively.

In other words, the CD that can guarantee rocking arm mode laser head mobile route exposes portion and the center portion of exposing forms one, and drives by sliding of dimmer and to open/to close the portion of exposing that states.

Therefore, solved the lower problem of the ability that prevents of external contamination material, and because the densification of CD can realize the miniaturization of recording and reproducing apparatus.

Optical disk cartridge among the present invention possesses the dimmer opening/closing apparatus is arranged; One end of this apparatus main body 200 forms opening groove 204 to length direction, can insert the open parts 501 of dimmer, open dimmer 300; In addition, can open the structure of dimmer 300 automatically in the time of can adopting CD to install, but also can possess the A.C.D. (not shown) of closing dimmer 300 when CD breaks away from CD drive automatically.Above-mentioned A.C.D. has adopted coil spring to connect the structure of dimmer 300 and optical disk cartridge main body 200, makes relatively simple for structure.

In addition, main body 200 can also be appended possesses padlock block piece 220, and (Figure 32) and off-position (Figure 33) constraint dimmer 300 opens/close driving in the release position.

When dimmer 300 cut out, the padlock block piece 222 of off-position guaranteed that dimmer 300 cuts out the portion of exposing 210 fully; And the padlock block piece 221 of release position is installed dimmer 300 according to the opening of dimmer 300 on the position of guaranteeing rocking arm 109 motion paths.

The CD of internally being located at optical disk cartridge 200 below describes.

Figure 34 is that optical disk cartridge is installed in the state cross-sectional view on the CD drive.

As shown in the figure, (g1 g4) is inserted on the CD drive main body optical disk cartridge main body 200 with certain interval; And the setting of CD for drive also will with optical disk cartridge 200 form certain intervals (g2, g3).

Therefore, the diameter of CD will satisfy the condition of do≤W1-2 (t1+g1+t2+g2).Here, during according to PCMCIA II specification, W1 is 48mm; If optical disk cartridge attaching/detaching device 500 is set, g1 will be more than the 1.5mm; If CD 400 will rotate under the situation that not disturbed by optical disk cartridge 200, more than the minimum 0.5mm of g2.And (t1, when t2) being 1mm, the diameter d o of CD wants below the 40mm for optical disk cartridge 200 and CD drive thickness.

In addition, the diameter of CD will be able to preserve the size of the above data of some.With present BD recording density 16.5Ghit/in ²Be benchmark, the minimum diameter that can write down 1 above CD-ROM (650MB) capacity is about about 22mm.In other words, suppose that internal diameter is 5mm, from diameter 7mm opening entry, and the efficient of record data is about at 0.6 o'clock, and the value of taking advantage of of utilizing record area and recording density and record efficiency is the relation of record data amount, can be in the hope of minimum diameter.

And when considering concerning between optical disk cartridge attaching/detaching 500 and the spindle motor 13, the thickness of optical disk cartridge main body 200 will be in 2.5mm.Therefore, satisfy the condition of disk thickness t≤2.5-2 (g3+t3).Here, if CD 400 will rotate under the situation that not disturbed by optical disk cartridge 200, the g3 minimum is more than the 0.5mm, and the top thickness t 3 of optical disk cartridge 200 is wanted more than the 0.3mm, so the thickness t of CD is wanted below the 0.9mm.

Can represent with mathematical expression 2 by the proper vibration number that the CD rotation takes place.

[mathematical expression 2]

ω _mn＝λ _mn/(2πr _o ²)[Et ³/12ρ(1-v ²)] ^1/2

Here, ω mn is that proper vibration number, the λ mn of mn pattern are that the constant according to pattern number of times decision, external diameter radius, the E that ro is CD are that Young ' s coefficient (modulus), ρ are that the density of CD, thickness, the v that t is CD are Poisson ratios.

If simple table shows mathematical expression 2, performance is as mathematical expression 3.

[mathematical expression 3]

ω _mn|[h ³/d _o ⁴] ^1/2

Shown in mathematics 3, the proper vibration number of CD is by the function decision of external diameter and thickness.

And, when present CD, DVD, BD specification, t=1.12mm, do=120mm.The condition that satisfies minimum existing CD, DVD, BD dynamic characteristic shows as mathematical expression 4.

[mathematical expression 4]

tE0.0051d _o ^4/3

Put above-mentioned many conditions in order, be applicable to the disc size in the embodiment of the invention, diameter d o is 22mm-40mm, and thickness t then will satisfy mathematical expression 4, below the 0.9mm.If present in diagrammatic form, corresponding to the oblique line part 401 among Figure 35.

On the one hand, if the CD drive that forms according to PCMCIA I specification, driver integral body big or small as follows: length 85.6mm, width 54mm, integral thickness 3.3mm.The benchmark of telling about from the front calculates the disc size that is applicable on the CD drive that forms according to PCMCIA I specification, and is as follows: diameter 22mm-46mm, when thickness will satisfy mathematics, and will be below 0.3mm.

Tell about as the front, the CD in the embodiment of the invention adopts the small-sized specification that can be installed in the CD drive of the present invention, and has identical with existing CD or higher than existing CD dynamic characteristic.

Figure 36 is mounted in the sign sectional drawing of the CD on the main shaft.

Generality, central authorities are fixing, marginal portion CD freely, and its vertical movement (w) shows as mathematical expression 5.

[mathematical expression 5]

$w(r,\mathrm{\θ},t)=\underset{m}{\overset{^}{Q}}\underset{n}{\overset{^}{Q}}{R}_{\mathrm{mn}}\left(r\right)\{a_{\mathrm{mn}}\left(t\right)\cos \mathrm{m\θ}+b_{\mathrm{mn}}\left(t\right)\sin \mathrm{m\θ}\}$ Here, if W is CD vertical movement, m, n=0,1,2,3 ..., Rmn is the vibration shape (mode shape) of radial direction, α _MnAnd b _MnIt is the pattern constant.

[mathematical expression 6]

$F=-\mathrm{\ρh}{\underset{A_0}{@}}^{2\mathrm{\π}}{\underset{A_{\mathrm{ri}}}{@}}^{\mathrm{ro}}\frac{B^{2}w}{{\mathrm{Bt}}^2}\mathrm{Erdrd\θ}$

$=-\mathrm{\&rho;hQQ}{\underset{{\mathrm{<figure-callout\; id="0"\; label="A"\; filenames="A20041005435200431.png"\; state="\{\{state\}\}">A</figure-callout>}}_0}{@}}^{2\mathrm{\&pi;}}{\underset{A_{\mathrm{ri}}}{@}}^{\mathrm{ro}}{R}_{\mathrm{mn}}\left(r\right)\{{a^o}_{\mathrm{mn}}\left(t\right)\cos \mathrm{m\&theta;}+{b^o}_{\mathrm{mn}}\left(t\right)\sin \mathrm{m\&theta;}\}\mathrm{rdrd\&theta;}$

＝0(for?m@0)

Here, F is that CD inertial force, r are radiuses.

In addition, moment of inertia shows as mathematical expression 7 in the arbitrary diameter of CD.

[mathematical expression 7]

$M_o=-\mathrm{\&rho;h}{\underset{A_0}{@}}^{2\mathrm{\&pi;}}{\underset{A_{\mathrm{ri}}}{@}}^{\mathrm{ro}}\frac{B^{2}w}{{\mathrm{Bt}}^2}\mathrm{Er}\sin (\mathrm{\&theta;}-{\mathrm{\&theta;}}_o)\mathrm{drd\&theta;}$

$=-\mathrm{\&rho;hQQ}{\underset{{\mathrm{<figure-callout\; id="0"\; label="A"\; filenames="A20041005435200431.png"\; state="\{\{state\}\}">A</figure-callout>}}_0}{@}}^{2\mathrm{\&pi;}}{\underset{A_{\mathrm{ri}}}{@}}^{\mathrm{ro}}{R}_{\mathrm{mn}}\left(r\right)\{{a^o}_{\mathrm{mn}}\left(t\right)\cos \mathrm{m\&theta;}+{b^o}_{\mathrm{mn}}\left(t\right)\sin \mathrm{m\&theta;}\}\sin (\mathrm{\&theta;}-{\mathrm{\&theta;}}_o)r^2\mathrm{drd\&theta;}$

＝0(for?m@1)

Here, Mo is a moment of inertia.

[mathematical expression 8]

${\underset{A_0}{@}}^{2\mathrm{\&pi;}}\{a_{\mathrm{mn}}\left(t\right)\cos \mathrm{m\&theta;}+b_{\mathrm{mn}}\left(t\right)\sin \mathrm{m\&theta;}\}=2\mathrm{\&pi;}{a}_{0_n}$

for?m＝0

＝0，for?m@0

[mathematical expression 9]

${\underset{A_0}{@}}^{2\mathrm{\&pi;}}\{a_{\mathrm{mn}}\left(t\right)\mathrm{consm\&theta;}+b_{\mathrm{mn}}\left(t\right)\sin \mathrm{m\&theta;}\}\sin (\mathrm{\&theta;}-{\mathrm{\&theta;}}_o)\mathrm{d\&theta;}=\mathrm{\&pi;}(b_{1n}\cos {\mathrm{\&theta;}}_o-a_{1n}\sin {\mathrm{\&theta;}}_o),$

for?m＝1

＝0， for?m@1

Utilize mathematical expression 8 and mathematical expression 9, and decide to calculate, can show as mathematical expression 10 and mathematical expression 11 by the institute of mathematical expression 6 and mathematical expression 7.

[mathematical expression 10]

F＝k ₁(r _o ²-r _i ²)

K here ₁=-π a _Onρ h

[mathematical expression 11]

M _o＝k ₂(r _o ³-r ₁ ³)

Here $k_2=-\mathrm{\&rho;}\frac{\mathrm{\&pi;}}{3}(b_{1n}\cos {\mathrm{\&theta;}}_o-a_{1n}\sin {\mathrm{\&theta;}}_o).$

On the one hand, as shown in figure 36, be applied to the fastening force Fc of equal value on the CD 400 and show as mathematical expression 12 and mathematical expression 13 according to the moment Mc of above-mentioned fastening force.

[mathematical expression 12]

F _c＝F ₁-F ₂

[mathematical expression 13]

M _c＝F ₁(c+d)/4-F ₂r _i

If CD is wanted stable driving, the fastening force and the moment that are applied to fastener are bigger than the inertial force and the moment of inertia that produce because of the CD vibration.Therefore, can draw relational expression as mathematical expression 14 and mathematical expression 15.

[mathematical expression 14]

F _c＝F ₁-F ₂＞k ₁(r _o ²-r _i ²)

[mathematical expression 15]

M _c＝F ₁(c+d)/4-F ₂r _i＞k ₂(r _o ³-r _i ³)

Here

F ₁(c+d)/4＞＞F ₂r _i, mathematical expression 15 can show as mathematical expression 16.

[mathematical expression 16]

M _c|F ₁(c+d)/4＞k ₂(r _o ³-r _i ³)

Can be from mathematical expression 14 and mathematical expression 16 in the hope of learning formula 17 and mathematical expression 18 condition equally in full.

[mathematical expression 17]

r _o ²+r _i ²＜F _c/k ₁

[mathematical expression 18]

r _o ³-r _i ³＜M _c/K ₂

On the one hand, existing DVD specification is as follows: external diameter radius 60mm, internal diameter radius 7.5mm, F1=2.0N, F2≤0.5N.As benchmark, it is as follows to try to achieve the fastening condition more stable more than existing DVD specification.

At first can draw k1 from mathematical expression 17 and mathematical expression 18, the square value of k2 and each radius and a cube value are inversely proportional to.Utilize this point, when the external diameter radius is 20mm, ask k1, k2 will be the same with mathematical expression 20 with mathematical expression 19.

[mathematical expression 19]

(k ₁) _ro＝20mm＝[(r _o) _DVD/r _o] ²S(k ₁) _DVD

＝3.81S10 ^-3

[mathematical expression 20]

(k ₂) _ro＝20mm＝[(r _o) _DVD/r _o] ³S(k ₂) _DVD

＝3.46S10 ^-3

K1 and the k2 value that to try to achieve according to mathematical expression 19 and mathematical expression 20, substitution mathematical expression 17 and mathematical expression 18, ri respectively does for oneself more than 2.5 and 3.8.Fastening surplus rate 1.1 is multiplied by 3.8, and ri is about 4.2mm, and final internal diameter diameter is 8.4mm.

Identical method, during ro=11mm, asking the internal diameter diameter is 2.2mm.

Therefore, internal diameter diameter d i scope identical with existing DVD or higher fastening performance is 2.2mm-8.4mm.

Below, the operation on optical disk cartridge attaching/detaching device describes to optical disk cartridge.

In the time of in optical disk cartridge 200 is inserted into optical disk cartridge attaching/detaching device, at first the open parts 501 of dimmer are inserted in the opening groove 204 of optical disk cartridge main body 200, and the dimmer 300 of optical disk cartridge is moved to the release position.

In addition, when optical disk cartridge 200 was inserted into optical disk cartridge attaching/detaching device, the end of optical disk cartridge 200 can promote to release the release bulge-structure 522 of conveying member 520, and moved to the optical disk cartridge installation site releasing conveying member 520.

Along with above-mentioned release conveying member 520 moves to the optical disk cartridge installation site, padlock bulge-structure 524 will be to the dip plane 533b that presses down conveying member padlock 533; Then tangled, finally release conveying member 520 and be fixed on the optical disk cartridge installation site by padlock face 533a.

Simultaneously, triggering padlock 535 adjacency/be displaced into the top 542a that triggers spring members 540 padlock sheets 542 are finally tangled by padlock face 542b.

Then, if the attaching/detaching device of closing CD box, the padlock hook 552 of bolt device 550 will move to removes the position, re-move to upper lock position again, and on the plate 576 that is fixed in the above.When the user will take out optical disk cartridge, promote latch 551 padlock hook 552 is moved to the releasing position, because returning device 560 attaching/detaching apparatus main body structures 575 will rotate to the release position.

Rotation along with aforementioned body structure 575, owing to be fixed on the triggering padlock 535 on the padlock face 542b, conveying member padlock components 530 will be crooked, and the constraint that is fixed on the padlock bulge-structure 524 on the padlock face 533a will be removed, make release conveying member 520 move to the release location, final optical disk cartridge is pushed out to the outside.

In addition, trigger spring members 540 and form bending, and triggering padlock 535 will break away from padlock face 542b because of conveying member padlock components 530.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the modification of the above embodiment.

Claims (18)

1, a kind of CD drive is characterized in that comprising with lower member:

CD drive main body with the formation of PCMCIA size;

Splicing ear combines with the PCMCIA groove of described CD drive main body one end;

Main shaft is arranged on the described CD drive main body;

Optical take-up apparatus is arranged on the described CD drive main body, and adopts the rocking arm mode;

Control device is controlled described optical take-up apparatus, and links to each other transmission/received signal with described splicing ear.

2, CD drive as claimed in claim 1 is characterized in that also will comprising:

Be arranged on the optical disk cartridge attaching/detaching device of described CD drive main body top, can the fixing disc box by described optical disk cartridge attaching/detaching device.

3, CD drive as claimed in claim 2 is characterized in that:

Described optical disk cartridge attaching/detaching apparatus structure is as follows:

One end combines with described drive body hinge, and can insert the agent structure of optical disk cartridge;

The open parts of dimmer, the dimmer that is inserted on the optical disk cartridge can be opened in the tab-like inboard that is formed in described agent structure; Described agent structure is fixed on the latch utensil of upper lock position.

4, CD drive as claimed in claim 3 is characterized in that:

Comprise also in the described optical disk cartridge attaching/detaching device that an end is connected on the described drive body, the other end then is connected on the described agent structure, makes described agent structure be returned to the returning device of release position with this.

5, CD drive as claimed in claim 4 is characterized in that also comprising:

Link member, an end can slide on ribs, and other end hinge is incorporated on the described CD drive main body;

Torsion spring, an end are connected in drive body one side of described link member, and the other end then is fixed on the drive body, and the rotation link member is that ribs is positioned at the release position.

6, CD drive as claimed in claim 3.It is characterized in that:

Also comprise in the described optical disk cartridge attaching/detaching device, when described agent structure is returned to the release position, release the ejecting device of optical disk cartridge.

7, CD drive as claimed in claim 4 is characterized in that:

Described ejecting device comprises following parts:

Release conveying member, be incorporated into described agent structure, between installation site and release location, move, and support the optical disk cartridge edge that is inserted into by the release bulge-structure that forms;

The conveying member padlock components forms the laminated spring shape that an end is fixed on the agent structure side, and described release conveying member is fixed on the installation site;

Trigger spring members,, described release conveying member is removed locking state from described conveying member padlock components along with described agent structure is returned to the release position;

The padlock bulge-structure tab-likely is formed in described release conveying member;

The padlock face is formed on the described conveying member padlock components, makes described release conveying member be in locking state;

Trigger padlock, be formed on the described conveying member padlock components;

The padlock sheet is formed on the described triggering spring members, makes described triggering padlock be in locking state.

8, as claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described CD drive, it is characterized in that:

Described optical take-up apparatus also comprises following parts:

The rocking arm that combines with CD drive main body hinge;

With the hinge point is that benchmark is formed at the tracking driver that described rocking arm is tossed about;

Be arranged on the substrate optical system on the described rocking arm;

One end is fixed on the suspender on the described rocking arm;

Laser head is installed in the other end of described suspender, and condenser is installed;

Refracting telescope is arranged on the end of described rocking arm, and will be from the beam reflection of described substrate optical system or laser head in described laser head or described substrate optical system.And described laser head is formed with the gas suspension surface towards the face of CD.

9, CD drive as claimed in claim 8 is characterized in that:

Described laser head is provided with the focus actuator that can utilize distance between electrostatic force adjustment and the CD; And described condenser is installed in sowing on the device of described focus actuator.

10, CD drive as claimed in claim 1 is characterized in that:

The main part of described CD drive meets PCMCIA II specification.

11, CD drive as claimed in claim 1 is characterized in that:

The main part of described CD drive meets PCMCIA I specification.

12, a kind of optical take-up apparatus of CD drive is characterized in that comprising with lower member:

The rocking arm that combines with CD drive main body hinge;

With the hinge point is that benchmark is formed at the tracking driver that described rocking arm is tossed about;

Be arranged on the substrate optical system on the described rocking arm;

One end is fixed on the suspender on the described rocking arm;

Laser head is installed in the other end of described suspender, and condenser is installed;

Refracting telescope is arranged on the end of described rocking arm, and will be from the beam reflection of described substrate optical system or described laser head in described laser head or described substrate optical system.And described laser head is formed with the gas suspension surface towards the face of CD.

13, the optical take-up apparatus of CD drive as claimed in claim 12 is characterized in that:

Described laser head is provided with the focus actuator that can utilize distance between electrostatic force adjustment and the CD; And described condenser is installed in sowing on the device of described focus actuator.

14, a kind of optical disk cartridge of CD drive as claimed in claim 10, when the main part that it is characterized in that described CD drive met PCMCIA II specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA II groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to CD in the described optical disk cartridge to satisfy following specification requirement: diameter d o be 22mm-40mm, thickness t be 0.9mm following, meet tE0.0051d _o ^4/3Condition.

15, a kind of optical disk cartridge of CD drive as claimed in claim 11, when the main part that it is characterized in that described CD drive met PCMCIA I specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA I groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to CD in the described optical disk cartridge to satisfy following specification requirement: diameter d o be 22mm-46mm, thickness t be 0.3mm following, meet tE0.0051d _o ^4/3Condition.

16, a kind of optical disk cartridge of CD drive as claimed in claim 10, when the main part that it is characterized in that described CD drive met PCMCIA II specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA II groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And, be applicable to that the CD in the described optical disk cartridge will satisfy following specification requirement: external diameter 22mm-40mm, internal diameter 2.2mm-8.4mm.

17, a kind of optical disk cartridge of CD drive as claimed in claim 11, when the main part that it is characterized in that described CD drive met PCMCIA I specification, the optical disk cartridge that is installed in the CD drive in the PCMCIA I groove was made up of following parts:

CD;

The optical disk cartridge main body is protected described CD, and shows described cd-rom recording surface by the portion of exposing;

Dimmer can slide on described main body, with the described portion of exposing of this opening/closing;

The dimmer opening/closing apparatus will be opened described dimmer when being installed on the CD drive, will close described dimmer automatically when dismantling from CD drive.

And be applicable to that the CD in the described optical disk cartridge will satisfy following specification requirement: external diameter is that 22mm-46mm, internal diameter are 3.2mm-8.3mm.

18, as claim 14 or 15 or 16 or 17 described optical disk cartridges:

The center of described CD is exposed and corresponding to the one side of light picker motion path in the described portion of exposing; The described portion of exposing can be opened/be closed to described dimmer fully.

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