CN2522977Y

CN2522977Y - CD loading mechanism

Info

Publication number: CN2522977Y
Application number: CN 01271237
Authority: CN
Inventors: 黄志辉
Original assignee: Lingfeng Sci & Tech Co Ltd
Current assignee: Lingfeng Sci & Tech Co Ltd
Priority date: 2001-11-20
Filing date: 2001-11-20
Publication date: 2002-11-27
Anticipated expiration: 2011-11-20

Abstract

The utility model provides a CD loading device so as to result in simple adjuster structure, less part quantity, low manufacturing cost and simple and convenient operation process. The utility model comprises a laser-head device which generates a laser beam, so as to shoot on a CD driven by a main shaft motor to turn and receives a light beam reflected from the CD. And the utility model also comprises two parallel round guiding rods which are arranged on two opposite sides of the laser-head device and are used for guiding the laser-head device to move. The utility model is characterized in that at least the end of one guiding rod is arranged on an adjuster arranged on an under-pan; each adjuster comprises a U-shaped guiding part which allows the guiding rod to move from top to bottom and an adjusting column with a spiral rising groove having a rising height; the end of the guiding rod is arranged in the spiral rising groove and one end of the adjusting column also is provided with a device used for turning the adjusting column.

Description

The CD loader mechanism

Technical field

The utility model relates to a kind of optical disc apparatus, for example CD, CD-R, and the loader mechanism in CD-RW, VCD, DVD, the DVD-R, the optical disc apparatus of DVD-RW etc., particularly optical disc apparatus is with the structure of the degree of tilt of regulating bare headed device.

Prior art

General optical disc apparatus, it comprises that is used to rotate a drive system (generally using a Spindle Motor) and a servo control mechanism that has bare headed device that drives CD, both are two to be arranged on the underframe of optical disc apparatus independently of one another.

Servo control mechanism is connected in a pair of guide bar that is arranged in parallel to each other on the underframe movably, thereby bare headed device can move along the straight path at the center by being fixed on the CD on the rotating disk.

Shaven head device (bifocal optical pick-up) is fixed on the servo control mechanism.One CD-ROM drive motor moves back and forth servo control mechanism by a gear set.

But because the relation of mechanical component tolerance, important step is poly-be to the axle of bare headed device and driven rotary CD (or video disc) spool between adjust, making bare headed device send laser like this can be mapped on the CD, and from the CD beam reflected, can enter the object lens in the bare headed device and arrive the required standard of photo-detector.

So one of existing method of adjustment is: by adjusting the axle that drives the CD rotation, promptly adjust the pitch angle of Spindle Motor, the laser pitch angle that CD supporting plane and bare headed device are sent out changes, with satisfied or reach request for utilization.Yu finds that the pitch angle adjustment of Spindle Motor is not enough or difficult because the rotational speed of existing optical disc apparatus improves day by day.

In addition, in order to increase the resistance to shock of adjusting point, the bigger adjustment precision of tool, helping loader mechanism, the relative machining precision that reduces the Electronic Control mainboard, existing other method is, by adjusting two guide bars that be arranged in parallel that shaven head is invested, change laser that bare headed device sends and the inclination angle between the CD, for example see the oscilaltion adjustment among Fig. 3 A-E of US6285649, it has three regulators that respectively comprise screw, spring and cramping body.

Yet, a plurality of parts of adjuster structure band and the cost height of second method, and regulate again, even precision is limited by the pitch of screw and the shape of screw end, therefore occurs the long adjustment time easily, is difficult to meet fast, the requirement of low production cost.

Technology contents

The utility model purpose is, overcomes the shortcoming of prior art, makes that controller structure is simple, number of parts is few, production cost is low and simple to operation.

The utility model proposes a kind of CD loader mechanism, it comprises: one is used to produce laser light ray to penetrate on the CD that is rotated by Spindle Motor and receive the bare headed device of beam reflected from the CD; Be located at and be used to two parallel circular guide bars guiding bare headed device to move on the bare headed device two opposite sides; It is characterized in that: the end of at least one guide bar is located at the regulator on the chassis, each regulator comprises an adjustment post that is used to allow the spiral shell shape lifting groove of a U-shaped targeting part that guide bar moves up and down and a band adjustable height, the end of guide bar is located in the spiral shell shape lifting groove, and an end of this adjustment post also has one and is used to rotate the mechanism that adjusts post.

Description of drawings

Fig. 1 removes casing frame and with the mansion view of the optical disc apparatus of CD loader mechanism, wherein optical disc apparatus is in the state of opening or unload CD, and two positions that are in of bare headed device also are shown for of the present utility model;

Fig. 2 is the mansion view of the CD loader mechanism among Fig. 1, wherein omits Spindle Motor and CD-ROM drive motor and bare headed device;

Fig. 3 is the sectional view of the line I-I of Fig. 2;

The sectional view of the line II-II of Fig. 2 of Fig. 4;

Fig. 5 is for adjusting the side view of post.

The preferred embodiment explanation

In Fig. 1, as existing apparatus, optical disc apparatus 1 has a quadra 2, be provided with optical disc tray 3 extensible or that move in the framework, under the pallet level, be provided with fixing loader mechanism 4 by four beam (not shown), this loader mechanism 4 is provided with two

parallel guide bars

5,6, its guiding 5, establish thereon (comprising servo control mechanism) the bare headed device 7 that moves on 6, this shaven head device 7 is moved back and forth in the room groove 3A when optical disc tray 3 moves into by a gear set (not shown) by the CD-ROM drive motor on the loader mechanism 48, and also is provided with the Spindle Motor 9 that is used to rotate the driving CD on this loader mechanism 4.Because above component part is a prior art so be not described further.

Among Fig. 2-4, do not show Spindle Motor and CD-ROM drive motor for ease of understanding, has a chassis 10 on this loader mechanism 4 of the present utility model, its four jiaos have the part 11 that is connected with beam, 10 parts are provided with fixator 15 and rotating regulator 12-14 on the chassis, a pair of

guide bar

5,6 is be arranged in parallel like this, promptly can move along the straight path at the center by the light that on Spindle Motor, rotates at the bare headed device 7 on the guide bar, laser of adjusting bare headed device simultaneously and being sent and the inclination angle between the CD are to satisfy or to reach request for utilization.

Among Fig. 3-4, regulator 12-14 also is shown, it comprises that respectively is used to hold a

guide bar

5,6 the adjustment post A that does not hold and have the spiral shell shape lifting groove A4 of tool adjustable height (can referring to Fig. 5) and one are used to the U-shaped targeting part B that allows that guide bar moves up and down, this is because U-shaped targeting part B only moves up and down guide bar, so when rotating the adjustment post A of tool spiral shell shape lifting groove A4, guide bar can change in response to the gradual change height on spiral shell shape lifting groove A4 base or adjust, its adjustable height h for example is 0.9mm, produces the 0.04mm Level Change approximately so the adjustment post A of per 15 degree rotates.The size of spiral shell shape lifting groove A4 is slightly larger than the diameter of guide bar approximately, and its to make the meta height of guide bar on the chassis be H, generally for example be 6.5～7mm.

For being convenient for production, this adjustment post A is also by constituting with the lower part: one by for example its with mold method (co-injection) or embed the mold method and make upper stud body A2 be fixed on down screw A3 on the spiro column A1 because of fixing on following spiro column A1 on the chassis 10, upper stud body A2 and one, thereby one of formation is used to support the spiral shell shape lifting groove A4 that guide bar is not held between upper stud body and following spiro column.Regulate guide bar for adjustment post A can be rotated in addition, on following spiro column A1, have rotating mechanism A5 as cross groove.

But fall back minimum altitude for avoiding regulating guide bar to peak, the place also is equipped with link stopper at the peak end position, sees Fig. 5, and spiral shell shape lifting groove is the lifting groove with about pitch like this.

In addition, the meta height H of the spiral shell shape lifting groove A4 of adjustment post A can be respectively similar and different at regulator 12-14 in response to design.

Claims

1. CD loader mechanism, it comprises:

One is used to produce laser light ray to penetrate on the CD that is rotated by Spindle Motor and receive the bare headed device of beam reflected from the CD;

Be located at and be used to two parallel circular guide bars guiding bare headed device to move on the bare headed device two opposite sides;

It is characterized in that: the end of at least one guide bar is located at the regulator on the chassis, each regulator comprises an adjustment post that is used to allow the spiral shell shape lifting groove of a U-shaped targeting part that guide bar moves up and down and a band adjustable height, the end of guide bar is located in the spiral shell shape lifting groove, and an end of this adjustment post also has one and is used to rotate the mechanism that adjusts post.

2. CD loader mechanism as claimed in claim 1 is characterized in that, rotates the machine of adjusting post

Structure is a cross groove.

3. CD loader mechanism as claimed in claim 1 is characterized in that, spiral shell shape lifting groove is a tool

The lifting groove that a pitch is arranged.

4. CD loader mechanism as claimed in claim 3 is characterized in that, the liter of spiral shell shape lifting groove

Fall highly for 0.9mm's.