CN1104000C - Tilt adjusting device for optical disk player - Google Patents

Abstract

A disc player tilt adjustment device for adjusting the tilt angle between the disc and the optical axis of the optical head, comprising: a fixed spindle motor and a bracket that acts as a guide when adjusting the tilt angle; fixed on the machine base to fix the bracket when adjusting the tilt angle The first shaft and the second shaft; installed on the lower surface of the bracket, the fixed spring that positions the spindle motor at a given position; applies a given amount of pressure to the fixed spring to fix the fixed screw of the spindle motor; installed on the second An adjustment spring for adjusting the inclination angle between the shaft and the bracket; an adjustment screw for adjusting the inclination angle θ by applying a given pressure to the adjustment spring.

Description

Tilt adjustment for disc players

Technical field

The present invention relates to an inclination adjusting device, in particular to an inclination adjusting device for an optical disc player, which can adjust the inclination angle between the optical disc and the optical axis of the optical head, so that it can be recorded on the optical disc with high density and accurately and store data.

technical background

At present, since the optical disc player does not include a device for adjusting the inclination angle between the optical disc and the optical axis of the optical head, it is necessary to strictly control the size of each relevant part of the optical disc player and to manufacture the product precisely. As a result, yield reduction and frequent occurrence of defective products result. In addition, due to the development of DVD products that can write data at high density, the data pits have become smaller, making the regulations on the tilt angle more stringent than those on CD-ROM, so it is not enough to strictly limit the size of the relevant components. Adjust the inclination angle between the disc and the optical axis of the optical head accurately. Also, the written data stored on the optical disc cannot be read out in this case. And errors may frequently occur when reading data written on the disc.

The object of the present invention is to provide a tilt adjustment device for a CD player, which utilizes a plurality of tilt adjustment screws and the elasticity of the spring to adjust the tilt angle between the CD and the optical axis of the optical head, and can be used as a miniature drive for a notebook computer device, thus solving the above-mentioned problems.

Contents of the invention

Another object of the present invention is to provide a tilt adjustment device for an optical disc player, which can accurately read data stored in the optical disc without errors when reading the data.

In order to achieve these and other objects, the present invention provides a tilt adjustment device for a disc player to adjust the tilt angle between the disc and the optical axis of the optical head, wherein the disc player includes: a spindle motor for rotating the disc ; an optical head that reads data stored on the surface of the optical disc while moving in the tracking direction or focusing direction; and a frame with a transmission part for moving the optical head, the tilt adjustment device includes: a bracket, located on the frame Below, the spindle motor is fixed on the bracket; the first shaft, one end of which is fixed on the base, and the other end is fixed on the bracket by a fixing screw and a fixing spring, and the fixing spring is located at Between the bracket and the fixing screw, when the fixing screw is tightened, the bracket and the spindle motor fixed on the bracket can be positioned at a given position by the fixing spring; the second shaft, its One end is fixed on the base, and the other end is connected to the bracket through an adjustment spring and an adjustment screw. The adjustment spring is located between the other end of the second shaft and the bracket. When the adjustment screw is used, the inclination angle of the bracket can be adjusted through the deformation of the adjustment spring.

Description of drawings

The invention and its advantages may be better understood and made apparent by the detailed description of the invention with reference to the accompanying drawings. The same reference numerals in the figures represent the same or similar components. In the picture:

Fig. 1 is a state diagram when the spindle motor is installed in the optical disc player and the inclination angle is adjusted between the optical disc and the optical head optical axis;

Fig. 2 is a detailed structural diagram of the structure indicated by "A" in Fig. 1;

Fig. 3 is a detailed structural diagram of the structure indicated by "B" in Fig. 1 .

Detailed ways

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. First, in all the drawings, it should be noted that the same reference numerals designate the same or equivalent elements having the same function. Also, known functions and constructions that do not obscure the clarity of the present invention will not be described in detail in the present invention.

Figure 1 is a state view of the spindle motor installed on the optical disc player and adjusting the inclination angle between the optical disc and the optical axis of the optical head, Figure 2 is a detailed structural diagram of the structure indicated by "A" in Figure 1, and Figure 3 is Figure 1 The detailed structure of the structure referred to in "B".

As shown in Figure 1, the optical disc player mainly includes: a spindle motor 12, which rotates an optical disc 10 storing data at a given rotational speed; data; and a transmission component, which is installed on the machine base, so that the optical head 10 can perform reciprocating linear motion. Wherein, transmission part comprises a screw rod 46 of the optical head 30 that can read the data written on the optical disc 10, and a guide shaft 32 that guides the optical head 30 to do linear reciprocating motion when moving the optical head 30, the guide shaft is Supported on the base 16. In this case, the two ends of the screw rod 46 are fixed by the bearing housing 36 and the second screw 42 , while the guide shaft 32 is fixed by the first screw 34 . In addition, the driving motor 44 generates driving power to make the optical head 30 reciprocate linearly along one side of the screw 46 . The driving force of the drag motor 44 is transmitted to the screw 46 through the rotation of the first gear 38 and the second gear 40 .

In the optical disc player having the above structure, the means for adjusting the inclination angle between the optical disc 10 and the optical axis of the optical head has the following structure. That is, as shown in FIGS. 1-3, a bracket 14 is mounted on the lower end of the spindle motor 12 to fix the spindle motor 12 rotating the optical disc 10 at a given rate and to guide when adjusting the tilt angle. A first shaft 18 and two second shafts 24 are fixedly installed on the lower surface of the base 16 by riveting, and fix the bracket 14 when adjusting the inclination angle between the optical disc 10 and the optical axis of the optical head.

In addition, as shown in FIG. 2, a fixing spring 20 for positioning the spindle motor 12 at a given position is mounted on the lower surface of the frame 14 on which the first shaft 18 is mounted. Now, the fixed spring 20 can be replaced by a leaf spring to generate a large force when there is a small displacement in a small space. The two surfaces of the fixed spring 20 are in contact with the lower surface of the bracket 14, so that the fixed spring 20 generates A force of a given magnitude is applied to the bracket 14 . In addition, a fixing screw 22 that applies a given magnitude of pressure (pressure P) to a fixing spring 20 that fixes the spindle motor 12 is inserted into a hole inside one end of the first shaft 18 .

Referring to FIG. 3, likewise, an adjustment spring 26 is installed between the second shaft 24 and the bracket 14 as means for adjusting the inclination angle between the optical disc 10 and the optical axis of the optical head. Here, the adjustment spring 26 can be replaced by a leaf spring, so as to generate a large force for a small displacement in a narrow space. Both surfaces of the adjustment spring 26 are in contact with the upper surface of the bracket 14 to apply a force of a given magnitude by the tilt adjustment screw 28 to the bracket 14 . The tilt adjustment screw is inserted into the inner hole of the second shaft 24, and the position of the spindle motor 12 is adjusted in the range of the tilt angle θ relative to the support 14, which will give A certain amount of power is transmitted to the adjustment spring 26. Then, as shown in Fig. 1, the tilt adjusting screw 28 has a first tilt adjusting screw 28a for adjusting the radial tilt angle between the optical disc 10 and the optical axis of the optical head, which is positioned on the central axis of the adjusting screw 28; The second tilt adjustment screw 28b for adjusting the tangential tilt angle between the optical disc 10 and the optical axis of the optical head is located above the central axis.

The operation process of adjusting the inclination angle between the optical disc and the optical axis of the optical head by the inclination adjusting device of the optical disc player of the embodiment of the present invention with the above-mentioned structure will be described in detail below.

At first, as shown in Figures 2 and 3, the end of the first shaft 18 fixed on the support 16 is inserted into the surface on which the spindle motor 12 is installed on the support 14, and the other side of the support 14 is located on the support 16. The lower surface of the second shaft 24. Then, the fixing spring 20 is installed between the bracket 14 embedded with the first shaft 18 and the fixing screw 22 , and the adjusting spring 26 is installed between the second shaft 24 and the bracket 14 . In this way, due to the elasticity of the adjusting spring 26, the bracket 14 is tilted at a given angle (θ), that is, the tilt adjustment amount.

Next, install the spindle motor 12 on the machine base 16, and tighten the fixing screw 22 at the same time to generate an upward force P. Then, the position where the first tilt adjusting screw 28a is assembled is set as a reference point, slowly turn the first tilt adjusting screw 28a to adjust the radial tilt angle between the optical disc 10 and the optical head optical axis, and slowly press The second tilt adjustment screw 28b is moved to adjust the tangential tilt angle between the optical disc 10 and the optical axis of the optical head, so that the tilt angle of the disc player is precisely adjusted.

As can be seen from the above description, the present invention can precisely adjust the tilt angle between the optical disc and the optical axis of the optical head by using a plurality of tilt adjustment screws and a leaf spring that can generate a large force for a small displacement, so it can precisely adjust the tilt angle of the notebook computer. The tilt angle of the drive unit. In addition, the leaf spring is installed on the bracket to fix the spindle motor, which can absorb the vibration generated during high-speed movement and has the function of dust prevention. Furthermore, since the inclination angle between the optical disc and the optical axis of the optical head can be precisely adjusted, errors will no longer occur when reading data stored on the optical disc, and therefore, the data can be read accurately.

Obviously, the invention is not limited to the present invention as a preferred embodiment for carrying out the invention, nor to the specific embodiment described in the specification, but the invention is determined by the appended claims.

Claims (5)

1. A tilt adjustment device for adjusting the inclination angle between the optical disc and the optical axis of the optical head in the optical disc player, the optical disc player comprises: a spindle motor that rotates the optical disc; An optical head for outputting data stored on the surface of the optical disc; and a base with a transmission part for moving the optical head, wherein the adjusting device includes: a bracket, located below the machine base, the spindle motor is fixed on the bracket; One end of the first shaft is fixed on the base, and the other end is fixed on the bracket by a fixing screw and a fixing spring, and the fixing spring is located between the bracket and the fixing screw, when the screw is tightened When fixing the screw, the bracket and the spindle motor fixed on the bracket can be positioned at a given position by the fixing spring; The second shaft, one end of which is fixed on the base, and the other end is connected to the bracket through an adjustment spring and an adjustment screw, and the adjustment spring is located between the other end of the second shaft and the bracket , when the adjustment screw is turned, the inclination angle of the bracket can be adjusted through the deformation of the adjustment spring. 2. The device according to claim 1, wherein said first shaft and said second shaft are fixedly mounted on said frame by riveting. 3. according to the described device of claim 1, it is characterized in that, comprise two second axles, described inclination adjustment screw comprises the first inclination adjustment screw and A second tilt angle adjusting screw for adjusting the tangential tilt angle between the optical disc and the optical axis of the optical head. 4. The device according to claim 1, wherein the fixing spring and the adjusting spring comprise leaf springs capable of generating a large force for a small displacement in a narrow space. 5. The device according to claim 4, wherein the surfaces of the fixing spring and the adjusting spring are in contact with the surface of the bracket.

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