CN2884420Y

CN2884420Y - Portable optical head driving device

Info

Publication number: CN2884420Y
Application number: CN 200620055626
Authority: CN
Inventors: 曾荣生; 赖余霞; 李丰军; 骆名灯
Original assignee: Foryou Multimedia Electronics Co Ltd
Current assignee: Foryou Multimedia Electronics Co Ltd
Priority date: 2006-02-28
Filing date: 2006-02-28
Publication date: 2007-03-28
Anticipated expiration: 2016-02-28

Abstract

The utility model relates to a drive unit for DVD/VCD core optical head, in particular to a structure improvement to a portable optical head drive unit. The utility model comprises a discus basalis pedestal. A rotation unit which drives CD to rotate, a feeder assembly which drives the optical head to move, and a slide bar assembly which bears the optical head to move, are set up in the discus basalis pedestal. The feeder assembly comprises a drive motor. A worm assembly is connected with an output shaft of the drive motor. The output terminal of the worm assembly is connected with a rack. The rack is connected with the optical head, and belongs to the half height optical head drive unit. The utility model drive unit has advantages of simple organization, easy assembly, high reliability, thin holistic thickness, compact structure, convenient installation and adjustment, and low cost.

Description

A kind of portable light head driving apparatus

Technical field

The utility model relates to a kind of DVD/VCD movement shaven head drive unit, and specifically a kind of portable light head driving apparatus improves structure.

Background technology

Along with development of science and technology, the DVD/VCD CD drive more and more has been subjected to people's welcome.The quality that driver reads CD except with CD-ROM drive in shaven head read outside the Pass effect has, also closely related with each gear train transmission performance.Wherein bare headed drive unit is a pith, traditional bare headed drive unit comprises a CD-ROM drive motor, motor output shaft is fixed with a gear, gear again with another gearing mesh, and this gear is fixed on the screw mandrel, screw mandrel is directly connected on the shaven head, the type of belt drive of this gear screw mandrel transmission, ratio of gear is little, and higher to the accuracy requirement of gear and screw mandrel, and noise is bigger.

China CN03272957.X patent name discloses a kind of improvement project for " load bearing seat of disc accessing ", and at above-mentioned structure, its main improvement is to increase by a fixed gear between two gears, has increased ratio of gear.Though this structure can increase ratio of gear, still there are some shortcomings of gear drive itself, difficult people's will to the greatest extent.

The utility model content

The purpose of this utility model provides a kind of portable light head driving apparatus that has adopted worm and gear and tooth bar as gear train.

According to the above-mentioned purpose requirement, the utility model is realized by the following technical solutions:

A kind of portable light head driving apparatus, comprise the basal disc seat, the slide bar assembly of the rotary components that drives CD and rotate, the feeder assembly that drives the shaven head motion and the motion of carrying shaven head is installed in the basal disc seat, feeder assembly comprises CD-ROM drive motor, be connected with worm component on the CD-ROM drive motor output shaft, the worm component output terminal connects a tooth bar, and tooth bar is connected with shaven head.

Above-mentioned worm component comprise one be fixed on the CD-ROM drive motor output shaft worm screw and with the duplicate gear of worm mesh, the duplicate gear bottom is that worm gear, top are gear, the duplicate gear axle center is interspersed with a universal driving shaft, worm screw axle center and duplicate gear axle center are orthogonal, and wheel and rack directly meshes.

Above-mentioned slide bar assembly comprises two slide bars that are placed in parallel in the basal disc seat, and slide bar interts in shaven head versatilely, and by being fixed on the gib screw on the basal disc seat and placing the contacted adjustment spring of basal disc seat and slide bar to fix.

As preferred form, be provided with grab and the pin that stretches out towards bare headed direction at the tooth bar back side, pin cooperates with the bare headed back side by the tooth bar spring, and grab cooperates with side on the shaven head, and tooth bar also is provided with two and is used for the unthreaded hole of interspersed slide bar versatilely towards bare headed side.

Simultaneously, in above-mentioned basal disc seat, be provided with the installation draw-in groove of a fixed drive motor, the draw-in groove front end be installed be provided with a front shoe, have on the front shoe and be used for the breach that the CD-ROM drive motor output shaft passes and be used for the circular hole that the CD-ROM drive motor gib screw passes.

As improvement to such scheme, in the basal disc seat in front shoe the place ahead, be provided with the pit that is used to hold worm screw, in the pit next door, also be provided with the circular hole that is used for fixing universal driving shaft.

As further improvement to such scheme, in the basal disc seat, also be provided with the groove that is used for fixing two slide bar terminations, adjust spring and be positioned in the groove, the slide bar termination laterally is pressed in to be adjusted on the spring, also has the screw that is used to install the slide bar gib screw in the outside of each groove.

Gear train of the present utility model has adopted the kind of drive of worm and gear and feed rack, and gear train is simple, and is easy to assembly, the reliability height, and integral thickness is thinner, belongs to semi-long type shaven head drive unit, compact conformation, installation, easy to adjust, cost is lower.

Description of drawings

Accompanying drawing 1 is the utility model one specific embodiment structural representation; Accompanying drawing 2 is a present embodiment decomposing state synoptic diagram; Accompanying drawing 3 is present embodiment basal disc seat and feeder assembly decomposing state structural representation; Accompanying drawing 4 is a present embodiment feeder assembly status architecture synoptic diagram; Accompanying drawing 5 is a present embodiment basal disc holder structure synoptic diagram.

Embodiment

For the ease of those skilled in the art's understanding, the utility model structural principle is further described in detail below in conjunction with specific embodiment and accompanying drawing:

Shown in accompanying drawing 1～accompanying drawing 5, present embodiment mainly comprises a basal disc seat 1, is made by plastic cement, and the slide bar assembly 4 of the rotary components 2 that drives CD and rotate, the feeder assembly 3 that drives shaven head 5 motions and 5 motions of carrying shaven head is installed in basal disc seat 1.

Feeder assembly 3 comprises CD-ROM drive motor 31, worm screw 32, duplicate gear 33, universal driving shaft 34 and tooth bar 35, duplicate gear 33 comprises worm gear 331 and gear 332, worm screw 32 is fixed on CD-ROM drive motor 31 output shafts, worm gear 331 and worm screw 32 engagements, the two axle center is orthogonal, duplicate gear 33 is interspersed with a universal driving shaft 34, tooth bar 35 and gear 332 engagements, and tooth bar 35 directly is connected with shaven head 5.CD-ROM drive motor 31 drives shaven head 5 motions by worm screw 32, worm gear 331, gear 332 and tooth bar 35 successively.Tooth bar 35 back sides are provided with grab 354 and the pin 353 that stretches out towards bare headed 5 directions, pin 353 cooperates with bare headed 5 back sides by tooth bar spring 36, grab 354 cooperates with the side of shaven head on 5, making tooth bar 35 can drive shaven head 5 moves simultaneously, tooth bar 35 also is provided with two unthreaded holes 352 that are used for versatilely interting slide bar 41 towards bare headed 5 sides, make tooth bar 35 and shaven head 5 do as a wholely to slidably reciprocate simultaneously on slide bar 41.Slide bar 41 has two, is set in parallel in basal disc seat 1 dual-side, makes shaven head 5 across between two slide bars 41, and slide bar 41 is by being fixed on the gib screw 42 on the basal disc seat 1 and placing the adjustment spring 43 of basal disc seat 1 groove fixing.

Correspondingly, basal disc seat 1 is provided with the installation draw-in groove 11 that CD-ROM drive motor 31 is installed, and draw-in groove 11 is installed is positioned at basal disc seat 1 marginal position, and its shape and size are consistent with CD-ROM drive motor 31.Be provided with a front shoe 111 in that draw-in groove 11 front ends are installed, have on the front shoe 111 and be used for the breach 112 that CD-ROM drive motor 31 output shafts pass and be used for the circular hole 113 that CD-ROM drive motor 31 gib screws pass.In the basal disc seat 1 in front shoe 111 the place aheads, be provided with the pit 12 that is used to hold worm screw 32, pit 12 next doors 1 in also be provided with the circular hole 15 that is used for fixing universal driving shaft 34.

Simultaneously, in basal disc seat 1, also be provided with the groove 13 that is used for fixing slide bar 41 ends, be placed with in the groove 13 and adjust spring 43, adjusting spring 43 contacts with bottom, slide bar 41 two ends, be may command two slide bars 41 with shaven head 5 in the object lens face and the depth of parallelism of CD, can guarantee that again shaven head 5 laser that send are vertical with cd side all the time, also guarantee shaven head action at the uniform velocity and accurately in feeding to-and-fro movement process; The next door of three grooves 13 therein also is provided with screw 14, and screw 14 is used to install and fix screw 42, and the shade of gib screw 42 can block slide bar 41 ends, prevents that slide bar 41 from dropping out from groove 13.

What the CD-ROM drive motor 31 in the present embodiment adopted is lower-cost direct-current brush motor, makes mechanical drive more stable.

Claims

1. portable light head driving apparatus, comprise basal disc seat (1), the slide bar assembly (4) of the rotary components (2) that drives CD and rotate, the feeder assembly (3) that drives shaven head (5) motion and carrying shaven head (5) motion is installed in the basal disc seat (1), feeder assembly (3) comprises CD-ROM drive motor (31), it is characterized in that: be connected with worm component on CD-ROM drive motor (31) output shaft, the worm component output terminal connects a tooth bar (35), and tooth bar (35) is connected with shaven head (5).

2. portable light head driving apparatus according to claim 1, it is characterized in that: worm component comprises a duplicate gear (33) that is fixed in the worm screw (32) on CD-ROM drive motor (31) output shaft and meshes with worm screw (32), duplicate gear (33) bottom is that worm gear (331), top are gear (332), duplicate gear (33) axle center is interspersed with a universal driving shaft (34), worm screw (32) axle center and duplicate gear (33) axle center are orthogonal, and gear (332) directly meshes with tooth bar (35).

3. portable light head driving apparatus according to claim 2, it is characterized in that: described slide bar assembly (4) comprises two slide bars (41) that are placed in parallel in the basal disc seat (1), slide bar (41) interts versatilely in shaven head (5), and by being fixed on the gib screw (42) on the basal disc seat (1) and placing basal disc seat (1) and the contacted adjustment spring of slide bar (41) (43) fixing.

4. portable light head driving apparatus according to claim 3, it is characterized in that: be provided with the grab (354) and the pin (353) that stretch out towards shaven head (5) direction at tooth bar (35) back side, pin (353) cooperates with shaven head (5) back side by tooth bar spring (36), grab (354) cooperates with the side of shaven head on (5), and tooth bar (35) also is provided with two towards shaven head (5) side and is used for the unthreaded hole (352) of interspersed slide bar (41) versatilely.

5. portable light head driving apparatus according to claim 4, it is characterized in that: the installation draw-in groove (11) that in basal disc seat (1), is provided with a fixed drive motor (31), draw-in groove (11) front end is installed is provided with a front shoe (111), have be used for that CD-ROM drive motor (31) output shaft passes lack (112) and be used for the circular hole (113) that CD-ROM drive motor (31) gib screw passes on the front shoe (111).

6. portable light head driving apparatus according to claim 5, it is characterized in that: in the basal disc seat (1) in front shoe (111) the place ahead, be provided with the pit (12) that is used to hold worm screw (32), in (1) on pit (12) next door, also be provided with the circular hole (15) that is used for fixing universal driving shaft (34).

7. portable light head driving apparatus according to claim 6, it is characterized in that: in basal disc seat (1), also be provided with the groove (13) that is used for fixing two slide bars (41) termination, adjusting spring (43) is positioned in the groove (13), slide bar (41) termination laterally is pressed in to be adjusted on the spring (43), also has the screw (14) that is used to install slide bar (41) gib screw (42) in the outside of each groove (13).