CN2498703Y

CN2498703Y - Optical pick-up drive of portable DVD player

Info

Publication number: CN2498703Y
Application number: CN 01262953
Authority: CN
Inventors: 陈建忠; 苏介祺; 徐星
Original assignee: XINKE FINE MECHANICS CO Ltd CHANGZHOU CITY
Current assignee: XINKE FINE MECHANICS CO Ltd CHANGZHOU CITY
Priority date: 2001-09-24
Filing date: 2001-09-24
Publication date: 2002-07-03
Anticipated expiration: 2011-09-24

Abstract

The utility model belongs to a CD-video optical pickup drive set. The light pickup is thin; a spindle drive motor is a thin type motor which is thinner than the optical pickup. The spindle drive motor is fixed on a metallic motherboard, and a centering cone component is directly or indirectly fixed on the shaft of the spindle drive motor; a transportable motor, a transmission organ and a slide bar component are arranged on the motherboard; the power of the transportable motor is transmitted to the transmission organ and the axis of every driving medium in the transmission organ is paralleled with that of the transportable motor shaft; a power take-off element screw mandrel of the transmission organ is meshed with a feed screw nut of the optical pickup; the optical pickup is movably connected with the slide bar; and the axis of the screw mandrel and the axis of the slide bar are parallel with the disk gripping surface of a rotatable disk support. The drive set works reliably, the thickness meets the requirement of a portable DVD-video or a minitype DVD-audio-video and the transmission organ is structured simply.

Description

The portable DVD optic disk machine drive of optical picker

Technical field

The utility model relates to a kind of DVD video disc player drive of optical picker, is applicable to portable DVD optic disk machine or mini DVD audio frequency and video unit mahine.

Background technology

Thickness is an important index to portable DVD optic disk machine, if the thickness of a portable DVD player is no more than 40 millimeters still acceptables.The existing portable DVD optic disk machine drive of optical picker that is used for adopts slim or extra-thin light picker, and use the corresponding construction form gear train, promptly adopt worm and gear to carry out transmission and move by the rack drives light picker.The thickness of the drive of optical picker of this structure is bigger 4～7 millimeters than the thickness of the light picker that it adopted, and the thickness of ultrathin light picker is usually less than 8 millimeters, and the thickness of thin optical pick-up is approximately 8～12 millimeters.Though this drive of optical picker can satisfy the requirement of portable DVD optic disk machine to thickness, the structure of gear train is comparatively complicated.

Summary of the invention

The purpose of this utility model is, provides the structure of requirement that a kind of thickness meets portable DVD optic disk machine or mini DVD audio frequency and video unit mahine and gear train comparatively simple, the drive of optical picker of reliable operation.

The technical scheme that realizes the utility model purpose is, this drive unit has metal base plate, rotating moving part, slides drive disk assembly, slide bar assembly and light picker; Rotating moving part has spindle motor, centering cone assembly and web member; Slide drive disk assembly and have holder, slide motor and gear train; Spindle motor is fixed on the base plate by web member and is positioned at the front side of base plate; The slide bar assembly is arranged on the base plate and is positioned at a side of base plate left and right sides, and the holder of rotating moving part is fixed on the base plate and is positioned at the opposite side of base plate left and right sides; Sliding motor and gear train is arranged on the holder; The motor shaft that slides motor is fixedlyed connected with the power input component of gear train; An end of holding about light picker by its groove seat be dynamically connected with the slide bar of slide bar assembly, about the end the other end be connected with the power output of gear train; Its design feature is: rotating moving part also has belt rubber blanket, and spindle motor is a brushless electric machine, and the centering cone assembly is directly or indirectly fixedlyed connected with the motor shaft of spindle motor; Belt rubber blanket is fixed on the upper surface of spindle motor casing, forms the video disc clamping face; The end that power output that hold about light picker and gear train is connected has linking arm and the feed screw nut who is fixed on the linking arm; The power output of gear train is a screw mandrel, and screw mandrel is slidingly connected and is meshed with the feed screw nut with the linking arm front and back of light picker; The axis of each driving member on the gear train driving-chain parallels with the axis of the motor shaft that slides motor; The axis of screw mandrel all parallels with the video disc clamping face of rotating moving part with the axis of the slide bar of slide bar assembly; Light picker is a thin optical pick-up; Spindle motor is slim brushless electric machine, its thickness thickness less than light picker.

Above-mentioned base plate is the steel base plate; Light picker is that the final stage of emission prime of light path and receiving light path is arranged on the light picker on the same surface level, and the inner structure of the used light picker of the inner structure of light picker and DVDROM driver is identical, and the thickness of light picker is 8～12 millimeters; Spindle motor is that thickness is 6～10 millimeters miniature brushless electric machine, the magnet ring of spindle motor is fixed on the inwall of casing and forms rotor, the coil stationary of spindle motor main by the multilayer siliconized plate on the superimposed coil former that constitutes, coil former is fixed on the base and form stator, base is fixed on the motor mounting plate of spindle motor; Spindle motor is fixed on the base plate by web member by its motor mounting plate; Be fixed with the centering cone erection column on the medium pore of casing, be fixed with the part of motor shaft upper end on the center pit of centering cone erection column, the lower end of motor shaft is stretched in the motor axis hole of coil former and is rotatable.

Above-mentioned centering cone assembly has centering cone dish, three locking plate pawls and three locking plate stage clips; The centering cone dish be enclosed within on the centering cone erection column and with centering cone erection column wringing fit; The disk body that the centering cone dish is arranged with three locking plate seat chambeies and centering cone dish by circumference etc. is provided with corresponding three the locking plate holes that communicate with locking plate seat chamber separately, each locking plate stage clip is located in separately the locking plate seat chamber and is positioned at the inboard, each locking plate pawl is located in separately the locking plate seat chamber and is positioned at the outside, under the effect of locking plate stage clip, the head of each locking plate pawl stretches out the locking plate hole, and the shoulder of each locking plate pawl contacts with the other Pan Bi in locking plate hole under the effect of locking plate stage clip.

The web member of above-mentioned rotating moving part has 3 groups, and every group of web member has a screw, a stage clip and an adjustable column; Each adjustable column is combined in the corresponding screw of base plate by the external thread rotary of its upper end, each compression spring sleeve is on corresponding adjustable column and between the motor mounting plate of base plate and spindle motor, the motor mounting plate that each screw is upward through spindle motor screws in the inner bolt hole of corresponding adjustable column lower end, and spindle motor is fixed on the base plate.

The said fixing seat is the combined type gas-liquid-solid reservation, and the combined type gas-liquid-solid reservation is fixed on first holder by second holder and constitutes; The combined type gas-liquid-solid reservation is fixed on the base plate by first holder; First holder is provided with screw mandrel cell body and gear shaft block, and second holder is provided with motor fixing plate, motor axis hole, gear shaft and screw mandrel groove cover plate; Slide drive disk assembly and also have screw mandrel catch and screw mandrel back seat; Slide on the motor fixing plate that motor is fixed on second holder, and its motor shaft passes the motor axis hole of second holder; The power input component of gear train is a motor gear; The transmission gear of gear train articulates with the gear shaft of second holder and is meshed with motor gear; The screw gear of gear train is fixed on the front end of screw mandrel; The part after a while of screw mandrel front end is located in the screw mandrel front stall of screw mandrel cell body and screw mandrel groove cover plate composition, and the rear end of screw mandrel is arranged in the screw mandrel back seat that slides drive disk assembly, and screw mandrel can rotate with respect to seat before and after the screw mandrel; The screw mandrel catch that slides drive disk assembly is fixed on first holder, and blocks screw mandrel from the place ahead; Screw gear is meshed with transmission gear.

Above-mentioned feed screw nut is the embedding plastic, is made up of nut and screw mandrel shell fragment; The material of nut is plastics, is the part of accepting screw mandrel institute driving force that the material of screw mandrel shell fragment is stainless steel, is the rubber-like part.

The front end of the slide bar of above-mentioned slide bar assembly is located in the slide bar front stall sliding rod hole of slide bar assembly, with slide bar front stall transition fit and can rotate with respect to the slide bar front stall; The body of rod of slide bar passes the gap of spacing groove seat up and down of light picker, and light picker and slide bar are dynamically connected; The rear end of slide bar stretches in the eccentric bushing of slide bar assembly, with the eccentric bushing transition fit and can rotate with respect to eccentric bushing; The eccentric trepanning of the slide bar back seat of slide bar assembly is passed in the rear end of eccentric bushing, eccentric bushing and slide bar back seat transition fit and can rotate with respect to the slide bar back seat; The slide bar front stall by screw retention on base plate and be positioned at forward position, the slide bar back seat by screw retention on the base plate and be positioned at position after leaning on.

This drive unit also has lead limit switch and regulates contact element; Regulate contact element and have switch contact and slide bar shell fragment; Lead limit switch is fixed on the motor fixing plate of spindle motor, and its shift knob is towards the rear; Regulate contact element and be fixed on the light picker, and the switch contact of regulating contact element is regulated the slide bar shell fragment and the slide bar Elastic Contact of contact element towards the place ahead.

The utlity model has positive effect: (1) is 13～16 millimeters by the thickness of the resulting drive of optical picker of structure of the present utility model, belong to thin optical pick-up driving device, its thickness can better satisfy the requirement of portable DVD optic disk machine or mini DVD audio frequency and video unit mahine.(2) the utility model adopts the steel base plate, sliding drive disk assembly is directly installed on the base plate, the gear train that slides drive disk assembly then adopts the version of the driving member transmission that parallels to the axis, and not only gear train is comparatively simple, and easy to assembly, compact conformation, reliable operation.(3) rotating moving part of the present utility model has adopted the structural design of thin type, directly on the upper surface of the casing of motor, paste and go in ring rubber blanket and replace original rotary-tray, by the version that centering cone dish and locking plate pawl take the clamping video disc, these measures all help the slimming of drive unit.(4) motor fixed connecting piece of the present utility model can be adjusted the video disc clamping face of rotary-tray, and the slide bar assembly can be adjusted the movement locus of light picker.By the adjustment of two mechanisms, with the axis of the axis of screw mandrel and slide bar all with the laser beam that the video disc clamping face parallels, light picker sends when keeping using of rotary-tray all the time with the realization of the perpendicular technique effect of video disc.(5) the slide bar shell fragment that is fixed on the adjusting contact element on the light picker of the present utility model applies an elastic force from downside to slide bar, helps eliminating the gap between slide bar and the light picker; The feed screw nut of light picker adopts embedding to mould structure, and its screw mandrel shell fragment applies an elastic force that makes progress by nut to screw mandrel, helps preventing the play of screw mandrel; These measures all help improving the utility model reliability during operation.(6) employed slim or ultrathin light picker is exclusively used in portable DVD optic disk machine usually, its inner body precision, complex structure, thereby cost an arm and a leg.The light picker of the thinner thickness that the utility model adopts, can choose the used thickness of DVDROM driver thick slightly and the satisfactory light picker in mechanical connection position, its price is compared with ultrathin light picker or thin optical pick-up greatly and is reduced, thereby the cost of drive of optical picker is reduced.

Description of drawings

Fig. 1 is a kind of schematic perspective view of the present utility model.

Fig. 2 is a schematic perspective view of the present utility model during from the beneath of drive unit shown in Figure 1.

Fig. 3 is the perspective exploded view of Fig. 1.

Fig. 4 is the perspective exploded view of Fig. 2.

Fig. 5 is the centering cone assembly of rotating moving part among Fig. 1 and the schematic perspective view of spindle motor mutual relationship.

Fig. 6 is the schematic perspective view during from the beneath of Fig. 5.

Fig. 7 is the perspective exploded view of centering cone assembly among Fig. 6.

Fig. 8 is for sliding the schematic perspective view of first holder of drive disk assembly among Fig. 4.

Fig. 9 is the schematic perspective view during from the beneath of Fig. 8.

Figure 10 is for sliding the schematic perspective view of second holder of drive disk assembly among Fig. 4.

Figure 11 is the schematic perspective view of the feed screw nut of light picker among Fig. 3.

Figure 12 is the structural representation of slide bar among Fig. 4, eccentric bushing, slide bar back seat, base plate mutual relationship.

Figure 13 is the schematic perspective view of eccentric bushing among Figure 12.

Figure 14 is a schematic perspective view of regulating contact element 7 among Fig. 2.

Figure 15 to Figure 18 is for being fixed on CD the put procedure synoptic diagram on the utility model rotating moving part.

Embodiment

See Fig. 1 to Fig. 4, this drive of optical picker has steel base plate 1, rotating moving part 2, slides drive disk assembly 3, slide bar assembly 4 and light picker 5.Rotating moving part 2 has spindle motor 21, centering cone assembly 22, web member 23 and belt rubber blanket 24.Spindle motor 21 is that thickness is 6～10 millimeters miniature brushless electric machine, and the thickness of spindle motor 21 is less than the thickness of light picker 5.The magnet ring of spindle motor 21 is fixed on the inwall of casing 212 and forms rotor, the coil stationary of spindle motor 21 main by the multilayer siliconized plate on the superimposed coil former that constitutes, coil former is fixed on the base and form stator; Base is fixed on the motor mounting plate 214, and spindle motor 21 is fixed on the base plate 1 by its motor mounting plate 214 by web member 23 and is positioned at the front side of base plate 1; Be fixed with centering cone erection column 213 on the medium pore of casing 212, be fixed with the part of motor shaft 211 upper ends on the center pit of centering cone erection column 213, the lower end of motor shaft 211 is stretched in the motor axis hole of coil former and is rotatable.Centering cone assembly 22 is fixed on the centering cone erection column 213 and is connected with motor shaft 211 indirect securement of spindle motor 21; The rubber blanket 24 that goes in ring is fixed on the upper surface of spindle motor 21 casings 212, forms the video disc clamping face.Slide drive disk assembly 3 and have holder 30, slide motor 31 and gear train 32; Slide bar assembly 4 is arranged on the base plate 1 and is positioned at base plate 1 left side, and the holder 30 of rotating moving part 2 is fixed on the base plate 1 and is positioned at the right side of base plate 1; Sliding motor 31 and gear train 32 is arranged on the holder 30; The motor shaft 311 that slides motor 31 is fixedlyed connected with the power input component 321 of gear train 32; Light picker 5 is that the final stage of emission prime of light path and receiving light path is arranged on the light picker on the same surface level, and the inner structure of the light picker that the inner structure of light picker 5 and DVDROM driver are used is identical, and light picker 5 is that thickness is 8～12 millimeters thin optical pick-up; The left end of light picker 5 has can carry out spacing groove seat 56 up and down, and groove seat 56 is dynamically connected with the slide bar 40 of slide bar assembly 4, and the right-hand member of light picker 5 has linking arm 51 and the feed screw nut 52 who is fixed on the linking arm 51; The power output of gear train 32 is a screw mandrel 324, and screw mandrel 324 is slidingly connected and is meshed with feed screw nut 52 with linking arm 51 front and back of light picker 5; The axis of each driving member on gear train 32 driving-chains parallels with the axis of the motor shaft 311 that slides motor 31; The axis of screw mandrel 324 all parallels with the video disc clamping face of rotating moving part 2 with the axis of the slide bar 40 of slide bar assembly 4.

See Fig. 5 to Fig. 7, centering cone assembly 22 has centering cone dish 221, three locking plate pawls 222 and three locking plate stage clips 223; Centering cone dish 221 be enclosed within on the spindle motor 21 centering cone erection columns 213 and with centering cone erection column 213 wringing fits; The disk body that centering cone dish 221 is arranged with three locking plate seat chamber 221-1 and centering cone dish 221 by circumference etc. is provided with corresponding three the locking plate hole 221-2 that communicate with locking plate seat chamber separately, each locking plate stage clip 223 is located among separately the locking plate seat chamber 221-1 and is positioned at the inboard, each locking plate pawl 222 is located among separately the locking plate seat chamber 221-1 and is positioned at the outside, under the effect of locking plate stage clip 223, the head 222-1 of each locking plate pawl 222 stretches out locking plate hole 221-2, and the shoulder 222-2 of each locking plate pawl 222 contacts with the other Pan Bi of locking plate hole 221-2 under the effect of locking plate stage clip 223.

See Fig. 3, the web member 23 of rotating moving part 2 has 3 groups, and every group of web member 23 has a screw 231, a stage clip 232 and an adjustable column 233; Each adjustable column 233 is combined in the corresponding screw of base plate 1 by the external thread rotary of its upper end, each stage clip 232 is enclosed within on the corresponding adjustable column 233 and between the motor mounting plate 214 of base plate 1 and spindle motor 21, the motor mounting plate 214 that each screw 231 is upward through spindle motor 21 screws in the inner bolt hole of corresponding adjustable column 233 lower ends, and spindle motor 21 is fixed on the base plate 1.

See Fig. 1 to Fig. 4 and Fig. 8 to Figure 10, holder 30 is the combined type gas-liquid-solid reservation, and combined type gas-liquid-solid reservation 30 is fixed on first holder 301 by second holder 302 and constitutes; Combined type gas-liquid-solid reservation 30 is fixed on the base plate 1 by first holder 301; First holder 301 is provided with screw mandrel cell body 301-1 and gear shaft block 301-2, and second holder 302 is provided with motor fixing plate 302-1, motor axis hole 302-2, gear shaft 302-3 and screw mandrel groove cover plate 302-4; Slide on the motor fixing plate 302-1 that motor 31 is fixed on second holder 302, and its motor shaft 211 passes the motor axis hole 302-2 of second holder 302; The power input component 321 of gear train 32 is a motor gear; The transmission gear 322 of gear train 32 articulates with the gear shaft 302-3 of second holder 302 and is meshed with motor gear 321; The screw gear 323 of gear train 32 is fixed on the front end of screw mandrel 324; The part after a while of screw mandrel 324 front ends is located in the screw mandrel front stall of screw mandrel cell body 301-1 and screw mandrel groove cover plate 302-4 composition, and the rear end of screw mandrel 324 is arranged in the screw mandrel back seat 34 that slides drive disk assembly 3, and screw mandrel 324 can rotate with respect to seat before and after the screw mandrel; The screw mandrel catch 33 that slides drive disk assembly 3 is fixed on first holder 301, and blocks screw mandrel 324 from the place ahead; Screw gear 323 is meshed with transmission gear 322.

See Figure 11, feed screw nut 52 is the embedding plastic, is made up of nut 52-1 and screw mandrel shell fragment 52-2; The material of nut 52-1 is plastics, is the part of accepting 324 driving forces of screw mandrel that the material of screw mandrel shell fragment 52-2 is stainless steel, is the rubber-like part.

See Fig. 3, Fig. 4, Figure 12 and Figure 13, the front end of the slide bar 40 of slide bar assembly 4 is located in slide bar front stall 41 sliding rod holes of slide bar assembly 4, with slide bar front stall 41 transition fit and can rotate with respect to slide bar front stall 41; The body of rod of slide bar 40 passes the gap of spacing groove seat 56 up and down of light picker 5, and light picker 5 is dynamically connected with slide bar 40; The rear end of slide bar 40 stretches in the eccentric bushing 44 of slide bar assembly 4, with eccentric bushing 44 transition fit and can rotate with respect to eccentric bushing 44; The eccentric trepanning of the slide bar back seat 43 of slide bar assembly 4 is passed in the rear end of eccentric bushing 44, and eccentric bushing 44 is with slide bar back seat 43 transition fit and can rotate with respect to slide bar back seat 43; Slide bar front stall 41 is fixed on the base plate 1 by screw 42 and is positioned at the forward position of left, slide bar back seat 43 be fixed on the base plate 1 by screw 45 and be positioned at left and lean on after the position.

See Fig. 2 and Figure 14, this drive unit also has lead limit switch 6 and regulates contact element 7; Regulate contact element 7 and have switch contact 71 and slide bar shell fragment 72; Lead limit switch 6 is fixed on the motor fixing plate 213 of spindle motor 21, and its shift knob 61 is towards the rear; Regulate contact element 7 and be fixed on the light picker 5, and the switch contact 71 of regulating contact element 7 is regulated the slide bar shell fragment 72 and slide bar 40 Elastic Contact of contact element 7 towards the place ahead.

See Fig. 1 to Fig. 4, this drive unit is when debugging, video disc clamping face by 23 pairs of rotating moving parts 2 of web member is adjusted, the one group of web member 23 that is positioned at the right side in the web member 23 is mainly used in fixed main shaft motor 21, and other two groups of web members 23 both had been used for fixing spindle motor 21, also have been used for the position of spindle motor 21 is adjusted, be in surface level thereby can be adjusted to, and the upper surface of the rubber blanket 24 that should go in ring is exactly the video disc clamping face of rotating moving part 2 to the upper surface that is arranged on the belt rubber blanket 24 on spindle motor 21 casings 212.

See Fig. 3, Fig. 4 and Figure 12, the movement locus adjustment of light picker can be realized by the adjustment to slide bar assembly 4; Because of the rear end of slide bar 40 is arranged in the eccentric bushing 44, eccentric bushing 44 is arranged on again in the slide

bar back seat

43,44 of rotating eccentric sleeves can make the rear end of slide bar 40 make circular motion around the axis of eccentric bushing 44 rear ends, thereby can adjust the position of slide bar 40, and then can adjust the movement locus of light picker.

Adjustment by above-mentioned two aspects, the technical requirement that the axis that satisfies screw mandrel 324 and the axis of slide bar 40 all parallel with the video disc clamping face of rotating moving part 2, so when keeping using this device, the laser beam that sends of light picker all the time with the realization of the perpendicular technique effect of video disc.

The process of fixed placement CD is provided by Figure 15 to Figure 18 on the rotating moving part 2 of this device.The downward pressure F1 of CD 8 acts on the inclined-plane of locking plate pawl 222 head 222-1 upper end, the resistance F2 that makes locking plate pawl 222 overcome locking plate stage clip 223 inwardly slides in rotation, CD 8 moves downward to contacting with the video disc clamping face, and three locking plate pawls 222 outwards pin CD 8 by separately head 222-1 under the effect of the elastic force F2 of locking plate stage clip 223.

See Fig. 2 and Fig. 4, when this device uses 3 rubber anti-vibration mounting circles be arranged on the corresponding Connection Block 1-1 of base plate 1 that this device then is connected with the corresponding component of main frame by the rubber anti-vibration mounting circle and is positioned in the main frame; Again the relevant interface of the circuit arrangement of main frame is connected with the corresponding interface of this device and can uses this device.Rotate, then drive light picker 5 along slide bar 40 slips when sliding motor 31 by gear train 32, light picker 5 moves to the switch contact 71 of regulating contact element 7 when touching the shift knob 61 of lead limit switch 6, then moved to the signal of inner terminal by lead limit switch 6 output light pickers 5, under the control of the control circuit of main frame, make and slide motor 31 and stop operating, and the position of inciting somebody to action light picker 5 this moment is controlled by the position of sliding 31 pairs of light pickers 5 of motor by the control circuit of main frame as reference position.

Claims

1, a kind of portable DVD optic disk machine drive of optical picker has metal base plate (1), rotating moving part (2), slides drive disk assembly (3), slide bar assembly (4) and light picker (5); Rotating moving part (2) has spindle motor (21), centering cone assembly (22) and web member (23); Slide drive disk assembly (3) and have holder (30), slide motor (31) and gear train (32); Spindle motor (21) is fixed on the front side that base plate (1) was gone up and be positioned to base plate (1) by web member (23); Slide bar assembly (4) is arranged on the side that base plate (1) left and right sides was gone up and be positioned to base plate (1), and the holder (30) of rotating moving part (2) is fixed on the opposite side that base plate (1) left and right sides was gone up and be positioned to base plate (1); Sliding motor (31) and gear train (32) is arranged on the holder (30); The motor shaft (311) that slides motor (31) is fixedlyed connected with the power input component (321) of gear train (32); About light picker (5) end of end by its groove seat (56) be dynamically connected with the slide bar (40) of slide bar assembly (4), about the other end held be connected with the power output of gear train (32); It is characterized in that: rotating moving part (2) also has belt rubber blanket (24), and spindle motor (21) is a brushless electric machine, and centering cone assembly (22) is directly or indirectly fixedlyed connected with the motor shaft (211) of spindle motor (21); The rubber blanket (24) that goes in ring is fixed on the upper surface of spindle motor (21) casing (212), forms the video disc clamping face; The end that is connected of the power output with gear train (32) of end has linking arm (51) and is fixed on feed screw nut (52) on the linking arm (51) about light picker (5); The power output of gear train (32) is screw mandrel (324), and screw mandrel (324) is slidingly connected and is meshed with feed screw nut (52) with linking arm (51) front and back of light picker (5); The axis of each driving member on gear train (32) driving-chain parallels with the axis of the motor shaft that slides motor (31) (311); The axis of screw mandrel (324) all parallels with the video disc clamping face of rotating moving part (2) with the axis of the slide bar (40) of slide bar assembly (4); Light picker (5) is a thin optical pick-up; Spindle motor (21) is slim brushless electric machine, its thickness thickness less than light picker (5).

2, portable DVD optic disk machine drive of optical picker according to claim 1 is characterized in that: base plate (1) is the steel base plate; Light picker (5) is that the final stage of emission prime of light path and receiving light path is arranged on the light picker on the same surface level, and the inner structure of the light picker that the inner structure of light picker (5) and DVDROM driver are used is identical, and the thickness of light picker (5) is 8～12 millimeters; Spindle motor (21) is that thickness is 6～10 millimeters miniature brushless electric machine, the magnet ring of spindle motor (21) is fixed on the inwall of casing (212) and forms rotor, the coil stationary of spindle motor (21) main by the multilayer siliconized plate on the superimposed coil former that constitutes, coil former is fixed on the base and form stator, base is fixed on the motor mounting plate (214) of spindle motor (21); Spindle motor (21) is fixed on the base plate (1) by web member (23) by its motor mounting plate (214); Be fixed with centering cone erection column (213) on the medium pore of casing (212), be fixed with the part of motor shaft (211) upper end on the center pit of centering cone erection column (213), the lower end of motor shaft (211) is stretched in the motor axis hole of coil former and is rotatable.

3, portable DVD optic disk machine drive of optical picker according to claim 2 is characterized in that: centering cone assembly (22) has centering cone dish (221), three locking plate pawls (222) and three locking plate stage clips (223); Centering cone dish (221) be enclosed within that centering cone erection column (213) is gone up and with centering cone erection column (213) wringing fit; The disk body that centering cone dish (221) is arranged with three locking plate seat chambeies (221-1) and centering cone dish (221) by circumference etc. is provided with corresponding three the locking plate holes (221-2) that communicate with locking plate seat chamber separately, each locking plate stage clip (223) is located in separately the locking plate seat chamber (221-1) and is positioned at the inboard, each locking plate pawl (222) is located in separately the locking plate seat chamber (221-1) and is positioned at the outside, under the effect of locking plate stage clip (223), the head (222-1) of each locking plate pawl (222) stretches out locking plate hole (221-2), and the shoulder (222-2) of each locking plate pawl (222) contacts with the Pan Bi on locking plate hole (221-2) side under the effect of locking plate stage clip (223).

4, portable DVD optic disk machine drive of optical picker according to claim 2, it is characterized in that: the web member (23) of rotating moving part (2) has 3 groups, and every group of web member (23) has a screw (231), a stage clip (232) and an adjustable column (233); Each adjustable column (233) is combined in the corresponding screw of base plate (1) by the external thread rotary of its upper end, each stage clip (232) is enclosed within on the corresponding adjustable column (233) and is positioned between the motor mounting plate (214) of base plate (1) and spindle motor (21), the motor mounting plate (214) that each screw (231) is upward through spindle motor (21) screws in the inner bolt hole of corresponding adjustable column (233) lower end, and spindle motor (21) is fixed on the base plate (1).

5, portable DVD optic disk machine drive of optical picker according to claim 1 is characterized in that: holder (30) is the combined type gas-liquid-solid reservation, and combined type gas-liquid-solid reservation (30) is fixed on first holder (301) by second holder (302) and goes up formation; Combined type gas-liquid-solid reservation (30) is fixed on the base plate (1) by first holder (301); First holder (301) is provided with screw mandrel cell body (301-1) and gear shaft block (301-2), and second holder (302) is provided with motor fixing plate (302-1), motor axis hole (302-2), gear shaft (302-3) and screw mandrel groove cover plate (302-4); Slide on the motor fixing plate (302-1) that motor (31) is fixed on second holder (302), and its motor shaft (211) passes the motor axis hole (302-2) of second holder (302); The power input component (321) of gear train (32) is a motor gear; The transmission gear (322) of gear train (32) articulates with the gear shaft (302-3) of second holder (302) and is meshed with motor gear (321); The screw gear (323) of gear train (32) is fixed on the front end of screw mandrel (324); The part after a while of screw mandrel (324) front end is located in the screw mandrel front stall of screw mandrel cell body (301-1) and screw mandrel groove cover plate (302-4) composition, the rear end of screw mandrel (324) is arranged in the screw mandrel back seat (34) that slides drive disk assembly (3), and screw mandrel (324) can rotate with respect to seat before and after the screw mandrel; The screw mandrel catch (33) that slides drive disk assembly (3) is fixed on first holder (301), and blocks screw mandrel (324) from the place ahead; Screw gear (323) is meshed with transmission gear (322).

6, portable DVD optic disk machine drive of optical picker according to claim 1 is characterized in that: feed screw nut (52) is the embedding plastic, is made up of nut (52-1) and screw mandrel shell fragment (52-2); The material of nut (52-1) is plastics, is the part of accepting screw mandrel (324) institute driving force that the material of screw mandrel shell fragment (52-2) is stainless steel, is the rubber-like part.

7, portable DVD optic disk machine drive of optical picker according to claim 1 is characterized in that: the front end of the slide bar (40) of slide bar assembly (4) is located in slide bar front stall (41) sliding rod hole of slide bar assembly (4), with slide bar front stall (41) transition fit and can rotate with respect to slide bar front stall (41); The body of rod of slide bar (40) passes the gap of spacing groove seat (56) up and down of light picker (5), and light picker (5) is dynamically connected with slide bar (40); The rear end of slide bar (40) stretches in the eccentric bushing (44) of slide bar assembly (4), with eccentric bushing (44) transition fit and can rotate with respect to eccentric bushing (44); The eccentric trepanning of the slide bar back seat (43) of slide bar assembly (4) is passed in the rear end of eccentric bushing (44), eccentric bushing (44) and slide bar back seat (43) transition fit and can rotate with respect to slide bar back seat (43); Slide bar front stall (41) is fixed on base plate (1) by screw (42) and goes up and be positioned at forward position, and slide bar back seat (43) is fixed on the base plate (1) by screw (45) and is positioned at position after leaning on.

8, portable DVD optic disk machine drive of optical picker according to claim 1 is characterized in that: this drive unit also has lead limit switch (6) and regulates contact element (7); Regulate contact element (7) and have switch contact (71) and slide bar shell fragment (72); Lead limit switch (6) is fixed on the motor mounting plate (214) of spindle motor (21), and its shift knob (61) is towards the rear; Regulate contact element (7) and be fixed on the light picker (5), and the switch contact (71) of regulating contact element (7) is regulated the slide bar shell fragment (72) and slide bar (40) Elastic Contact of contact element (7) towards the place ahead.