CN2447904Y - Optical disk machine reading head track testing device - Google Patents

Abstract

The utility model relates to a track testing device for reading heads of an optical disk machine, which is used for testing parallel and horizontal installing qualities of movable tracks of the reading heads of the optical disk machine. The device comprises a testing base, a plurality of sensors and at least one pressure point testing mechanism, wherein, the testing base is provided with a plurality of positioning columns; vertexes of four corners of a reading mechanism of the optical disk machine to be tested are fixedly arranged; the sensors are arranged below the positioning columns and can be used for testing if the reading mechanism and a motor of the optical disk machine are arranged horizontally; the pressure point testing mechanism is provided with a plurality of piezoelectric transition elements and pressure testing bars. The pressure testing bars are respectively used for pressing at the front ends and the back ends of the tracks of the two reading heads of the reading mechanism in order to test pressure values of down pressing tracks, the piezoelectric transition elements are transformed into relative electrical signals which are supplied to a monitoring computer at a proximal end to interpret or transmitted to a computer at a distal end to interpret or record through an interface device, and thus the tracks of the reading heads of the reading mechanism of the optical disk machine to be tested are judged if arranged in horizontal and parallel directions each other.

Description

Pick-up head for optical disk player detecting of railway device

The utility model system relates to a kind of pick-up head for optical disk player detecting of railway device, refer to especially a kind of in order to detect read head track in the CD-ROM device reading mechanism be parallel to each other and horizontal axis is installed the proving installation of quality.

CD-ROM device is widely used among audio-visual, the audio-visual equipment and computing information equipment in the daily life, the major equipment that reads with audio-visual broadcast data and computer information as CD-RW discsCD-RW.In the CD-ROM device reading mechanism, of paramount importance element is the read head that reads the optical information of CD-RW discsCD-RW, yet, allow read head keep and each parallel track motion track person of CD-RW discsCD-RW, when the read head track of being located at for this in reading mechanism.Usually, stable in order to obtain mechanical equilibrium and mobile mark, this read head track is to be provided with in paired parallel mode, therefore, relevant for the read head track when making assembly, then must especially note its both parallel and be horizontally disposed with, so that the track that this read head moves in displacement correctly and steadily.

Given this, at the paralleling and horizontal installation testing mode of the read head track of CD-ROM device reading mechanism, all take artificial visual inspection, or after the CD-ROM device overall package, read data and test and studied and judged with CD-RW discsCD-RW in CD-ROM device manufacturer traditionally.And in artificial visual inspection mode, owing to visual inspection easily produces eye fatigue man-hour, manpower and the cost of test are increased, and, the collimation error that naked eyes caused or experience misjudgment are to cause the pick-up head for optical disk player track to be parallel to each other and level is installed the subject matter of Quality Detection difficulty.

Again, as after the CD-ROM device overall package, carry out the real data read test again, outside not only more time-consuming the taking a lot of work, the origin cause of formation of this CD machine data read error is quite a lot of, be not that the situation one of all CD-RW discsCD-RW read error is decided to be that the read head track is parallel to each other and level installs that quality is bad to be caused, cause tester on this production line thereby at a loss as to what to do and be difficult to do accurate judgement, check, and increase the erroneous judgement probability of its test result and make its reliable test result degree not good on foot, yet, even if can be detected this pick-up head for optical disk player track be parallel to each other and level that quality is installed is bad, when on the subsequent production line, carrying out again maintenance engineering, also must test on production line and more increase CD-ROM device again with re-assemblying again after the maintenance of CD-ROM device integral demounting, cost in the maintenance.

Fundamental purpose of the present utility model is to provide a kind of pick-up head for optical disk player detecting of railway device, it can test the whether parallel and horizontal setting of its read head interorbital, with man-hour, manpower and the cost that significantly reduces its test, and can improve the fiduciary level of its test result.

A purpose more of the present utility model is to provide a kind of pick-up head for optical disk player detecting of railway device, needn't make the CD-ROM device overall package can carry out being parallel to each other and horizontal checkout of read head track, can avoid the trouble in the follow-up maintenance.

Another purpose of the present utility model is to provide a kind of pick-up head for optical disk player detecting of railway device, and it can make test result can be recorded and do follow-up maintenance immediately and handle.

For making detailed construction of the present utility model and application state there are further understanding, below enumerate some embodiment now, and cooperate each accompanying drawing to explain.Wherein:

Fig. 1 is the three-dimensional appearance structural drawing of the utility model;

Fig. 2 is the side view of the utility model;

Fig. 3 is a side view, shows that the utility model proving installation carries out the level correction state of reading mechanism integral body with sensor;

Fig. 4 is similar to Fig. 3, shows that the utility model proving installation is in the underproof state of the level correction of reading mechanism integral body;

Fig. 5 is a side view, shows that the pressure point mechanism for testing in the utility model proving installation carries out the state of pressure point test read head track;

Fig. 6 is similar to Fig. 5, shows that it is underproof state that the utility model proving installation carries out the pressure point test result to the read head track;

At first see also shown in Figure 1ly, be the stereographic map of the utility model pick-up head for optical disk player detecting of railway device (to call " proving installation " in the following text), in each accompanying drawing, indicate it with numbering " 100 ".This proving installation 100 comprises: a tester table 10, several sensing device 20 and at least one pressure point mechanism for testing.Wherein:

Tester table 10, it is provided with some reference columns 11, and this reference column 11 is provided with a projection 111 at least in end, and 11 of each reference columns all are the states that is provided with that keeps being same horizontal line height, its N Reference Alignment is adjusted at hereinafter detailed explanation will be arranged, and holds back Chen Ming.The projection 111 at these each reference column 11 tops then can insert fixing for the fixed orifice A1 in four corners of the reading mechanism A of a CD-ROM device to be measured, even also 11 horizontal planes that formed of reading device A horizontal axis and reference column and 10 of tester tables are the parallel, horizontal relations that keeps same, and be to place earlier with a CD-RW discsCD-RW B (seeing also shown in Figure 3) on the rotating shaft A2 ' of the motor A2 on this reading mechanism A to be measured, reflect when rotating that with mat CD-RW discsCD-RW B the level of reading mechanism A integral body and motor A2 is installed situation.

Several sensing device 20, its quantity is regardless of, and is to be the example explanation with three in the utility model.This sensor 20 is located at respectively in the zone that each reference column 11 is surrounded on the tester table 10, and comprise at least one radiated element 21 and receiving element 22, can be by radiated element 21 transmitting optics detection signal upwards, and, use fixed point height distance measurement function with certain level height by receiving element 22 its catoptrics signals of reception.The kenel of these sensors is regardless of, as constituting with laser optics signal sensing element or infrared optical signal sensing element person, even also the optical detector signal of this radiated element 21 is penetrated on CD-RW discsCD-RW B through the track mouth A3 that reads of above-mentioned reading mechanism A to be measured, and received by receiving element 22 by CD-RW discsCD-RW B catoptrics signal, with test light video disc B whether with reading mechanism A horizontal axis, whether 10 of horizontal plane that each reference column 11 is constituted and tester tables are coplanar horizontality, promptly determine a plane principle with 3, test the horizontal installment state of its reading mechanism A, test process that it is detailed and decision procedure have detailed explanation hereinafter in advance.

At least one pressure point mechanism for testing 30, it is located at this reference column 11 tops, and includes a pair of vertical movement device 31, and its type not attitude is arrested, and is to be the example explanation with the pneumatic cylinder in the utility model.Each vertical movement device 31 has an actuating strut 311, can do, vertical down moving, the end of this actuating strut 311 then links a wedge 32, its upper end has several component of piezoelectric conversion 33 respectively, it act as the pressure size conversion is become relative electrical signal, below each component of piezoelectric conversion 33, then be connected with a pressure testing rod 34 respectively, its outer cover is provided with a spring 341, pressure testing rod 34 integral body can be stretched as elasticity, contract and the elasticity involution, these pressure testing rod 34 ends then are provided with one and press the portion 342 that touches, use to press and touch tester, and the high low head of the height of mat such as tester becomes relative pressure and is conveyed to above-mentioned component of piezoelectric conversion 33 and converts relative electrical signal to.

Above-mentioned the utility model proving installation 100 more includes an interface device 40, is located at the appropriate position of tester table 10, and it is for having data conversion and communication transfer function, in order to test data and the result that sensor 20 is measured.Each component of piezoelectric conversion 33 of above-mentioned pressure point mechanism for testing 30 test and the pressure electrical signal of highly high low head, transfer in near-end computer or the far-end computer (figure shows) and make interpretation and record.

Cooperate again shown in Figure 3, for proving installation 100 of the present utility model as shown in Figures 1 and 2 at the state of the surface level N Reference Alignment that carries out reading mechanism A.Be positioned over by a CD-RW discsCD-RW B on the rotating shaft A2 ' of the motor A2 on this reading mechanism A to be measured, to drive CD-RW discsCD-RW B running in advance by motor A2, and in the surface level N Reference Alignment operation of this proving installation 100, system inject datum plate 40 bottom surfaces with an optical detector signal by radiated element 21 emission of each sensor 20 certain a bit, promptly with an incident wave X directive CD-RW discsCD-RW B, mat CD-RW discsCD-RW B produces a catoptrics signal, be a reflection wave Y, make the receiving element 22 of sensor 20 receive this signal, and use and make each sensor 20 produce level height distance measuring signals to be transferred to the elevation of water data that near-end computer or far-end computer are compared this standard through interface device 40.At the judgment mode of the utility model is that height range finding result by three sensors 20 among this Fig. 3 is when being unanimity, promptly decide planar fashion at 3, assert that this reading mechanism A is by the state of level storing, be consistent promptly, to avoid not putting the follow-up test result's that caused erroneous judgement with level because of reading mechanism A with the horizontal axis line of standard.

Please cooperate shown in Figure 4 again, promptly as shown in Figure 3 the utility model proving installation 100 when reading mechanism A makes the surface level N Reference Alignment, reading mechanism A takes place do not place level or the crooked underproof state of installation quality of motor A2 installation, be that motor A2 installs crooked and departs from horizontal axis line with reading mechanism A, during the formed parallel, horizontal reference field of 10 of plane that each reference column 11 forms and tester tables, make motor A2 when driving CD-RW discsCD-RW B rotation, this CD-RW discsCD-RW B is not to be to be the permanent running of horizontality that is, but with the installation angle excursion of showing motor A2, and on being tiltedly, the deflection of swing fluctuated running down, so for sensor 20, the incident wave X that its radiated element 21 is launched is still constant, but from the reflection wave Y ' of CD-RW discsCD-RW receiving element that B is reflected back into 22 then with the difference to some extent of the reflection wave Y shown in original the 3rd figure, and be the function that becomes for the moment but not be certain value.In the same manner, this sensing value also can transfer to near-end computer or far-end computer confession interpretation and record by interface device 40, and 3 not coplanar sensing value by this, judge in advance that reading mechanism A is not put by level or this motor A2 level quality is installed is defective, and can put the correction of position or directly notify maintainer on the production line to carry out earlier motor A2 level installed and overhaul.

Please consult shown in Figure 5ly again, carry out being parallel to each other and the situation of horizontal checkout of the read head track C of reading mechanism A and C ' for proving installation of the present utility model 100 is actual.Can carry out this test again after must proofreading and correct by the datum water level of above-mentioned reading mechanism A shown in Figure 3 earlier.When test, then take off the CD-RW discsCD-RW B on original rotating shaft A2 ' that places motor A2 shown in Figure 3, be shifted downward vertically with the vertical movement device 31 in this pressure point mechanism for testing 30 again, and the pressure that makes each pressure testing rod 34 end touch portion 342 press respectively two read head track C touching in this reading mechanism A and C ' before, the rear end, and make the feedback of this its pressure of component of piezoelectric conversion 33 mats and convert this force value to relative electrical signal, deliver to the near-end computer or transfer to far-end computer to come through interface device 40 for interpretation and record, and read head track C as shown in Figure 5 and C ' are for being parallel to each other and when being the normal configuration of surface level, then each component of piezoelectric conversion 33 change and electrical signal should be consistent identical, represent that promptly this read head track C and C ' are for being parallel to each other and being the configuration of surface level.

Please cooperate shown in Figure 6ly again, show that then as shown in Figure 5 read head track C and C ' produce underproof state when test.Touching portion 342 when the pressure of each pressure testing rod 34 presses when touching in the read head track C of this reading mechanism A and C ' front and back ends, because this read head track C and between C ' do not parallel and are not the surface level configuration, so the force value of 34 sensing reflections of each pressure testing rod also is not quite similar, and each component of piezoelectric conversion 33 is changed and electrical signal also have nothing in common with each other, use deliver to the near-end computer or transfer to the far-end computer interpretation by interface device 40 after record in addition, and can notify the maintenance that the maintenance personal directly is correlated with on the line.

The creation spirit of the utility model, tie up in to simplify effective proving installation the most, come the read head track in this CD-ROM device reading mechanism is parallel to each other and level is installed quality and detected, and then can significantly save man-hour, manpower and the cost of this detection, and the fiduciary level of its detection can significantly be promoted.

Above-mentioned Fig. 1～pick-up head for optical disk player detecting of railway device of the present utility model shown in Figure 6, wherein related description that is disclosed and accompanying drawing are not the preferred embodiment that technical scheme disclosed of being convenient to illustrate the utility model, not thereby arrest limit scope of the present utility model.And, every all at the structural detail of the utility model modify, change, or the equivalent substitution of element, displacement, when the protection domain that does not break away from the utility model, its scope will be defined by appended following all claims.

Claims (8)

1. a pick-up head for optical disk player detecting of railway device comprises:

One tester table is provided with several reference columns, for reading device of optic disk machine stationary positioned to be measured, and is identical level height between each reference column;

The several sensing device, be located in the zone that each reference column surrounded in the tester table, and include at least one radiated element and receiving element, but mat transmitting optics signal and receiving optical signals detect reading mechanism to be measured on each reference column whether level put or motor horizontal device quality whether bad;

At least one pressure point mechanism for testing, be located at this reference column top, and include a pair of vertical movement device, this vertical movement device also has an actuating strut, can do, vertical down moving, the end of this actuating strut then links a wedge, its upper end has several component of piezoelectric conversion respectively, the pressure size conversion can be become relative electrical signal, below each component of piezoelectric conversion, then be connected with a pressure testing rod respectively, can stretch as elasticity, contract and the elasticity involution, use drive the pressure testing rod end and press to the read head track of reading mechanism by this vertical movement device before, the rear end, changing its force value that presses down with the mat component of piezoelectric conversion is that electrical signal is provided with judging whether this read head track is parallel to each other or is level installing.

2. pick-up head for optical disk player detecting of railway device as claimed in claim 1, it is characterized in that, at least be provided with an interface device on this tester table, with the sensing signal of the component of piezoelectric conversion of transmission sensor and pressure point mechanism for testing and result to near-end computer and far-end computer interpretation record in addition.

3. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that, each reference column end of this tester table is provided with a projection at least, for four corner stationary positioned of CD-ROM device reading mechanism.

4. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that, this sensor is made of laser optics sensing signal element.

5. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that this sensor is made of infrared optical sensing signal element.

6. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that the vertical movement device in this pressure point mechanism for testing is made of pneumatic cylinder.

7. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that, each the pressure testing rod outside in this pressure point mechanism for testing is arranged with a spring respectively, so that pressure testing rod is stretched, contracted and the elasticity involution as elasticity.

8. pick-up head for optical disk player detecting of railway device as claimed in claim 1 is characterized in that, each the pressure testing rod end in this pressure point mechanism for testing is provided with one and presses and to touch portion and touch the read head track with voltage supply.

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