Apparatus for fixing shaft rod for bearing optical pick-up head

Abstract

This invention relates to an apparatus for fixing shaft rod for bearing optical pick-up head, which comprises: a fixing base with a press notch and a location notch with one side connected to one side of the fixing base to form an opening and let the rod cross the opening and locate in the notch, and a lock groupware in the press notch to be guided by the notch wall and lock the rod on notch bottom with some angle for location.

Description

technical field [0001] The invention provides a fixing device for a shaft rod carrying an optical reading head, in particular to a fixing device that can effectively fix the shaft rod carrying the reading head to avoid deviation due to external force impact. Background technique [0002] The transmission structure of the general existing optical drive reading head, such as figure 1 As shown, it mainly includes an optical pick-up head 1 for reading discs, a drive motor group 11 for driving the displacement of the optical pick-up head, a pair of shaft rods 12 for carrying and guiding the optical pick-up head, 13 and a base 14; where the optical pick-up head 1 is driven to move along the shaft rods 12, 13 by the driving motor group 11 arranged on the side of the base 14, and the disc is tracked, focused and read Action (not shown on the figure), therefore, the parallelism formed between the plane formed between the shaft rods 12, 13 and the data surface of the disk has a great...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned method of fixing the shaft rods 12, 13 to the base plate 14 is difficult to control the screw head 15 to the optimum angle because there is no structure that can guide the screw 15 to lock into the base plate 14 at an optimal angle during actual assembly on the production line. The optimal angle is pressed on the shaft rods 12, 13, so that during each operation, the force of each screw head 15 pressed on the shaft rods 12, 13 is not the same; Drop... etc. At this time, the external impact force borne by the shaft rods 12, 13 is likely to be concentrated on the screw 15, so that the screw 15 is likely to be deflected, and the shaft rods 12, 13 cannot be fixed firmly. The plane formed between the shaft rods 12 and 13 is deflected, so that the laser beam emitted by the optical pickup head 1 is not projected on the surface of the disc at a vertical angle, resulting in poor reading effect. The shaft rods 12, 13 accidentally disengage from the pressure of the screw 15 and break away from the distance between the positioning ribs 142, 142.

[0006] In addition, since the shaft rods 12, 13 are only pressed and fixed by the edge of the screw head of the screw 15, no matter the angle at which the screw 15 is locked into the base plate 14 is not good, or the screw 15 is deflected due to impact or collision Factors such as inclination will affect the ability of the screw 15 to lock the shaft rod, thereby affecting the reading effect of the optical drive

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