Optical Disc Drive Feeding Base Design for Cost Reduction
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Solution Overview
Problem
Conventional optical disc drive feeding base structures are either costly due to the need for multiple parts or require complex mold structures, which increase production costs and part variability.
Innovation Solution
A simplified feeding base structure using a press-processed SECC steel plate with a rectangular rim shape, featuring guides with funnel and cone sections for aligning components, and integrated springs for adjusting the spindle motor base, eliminating the need for separate parts and mold structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If guide parts are added to assemble parts at regular positions, then assembly precision is improved, but the number of parts increases and manufacturing cost increases
Solution Approach 1:
The guide parts are integrated directly into the feeding base structure rather than being separate components. The feeding base includes guide parts formed as integral portions of the base body, eliminating the need for separate guide parts and reducing the total number of components while maintaining assembly precision.
Solution Approach 2:
The feeding base serves multiple functions simultaneously: it provides the structural platform for assembling parts, incorporates guide parts for precise positioning, and integrates vibration damping features. This multi-functionality reduces the need for separate dedicated components.
2Device complexity
If an outsert mold is used to cover SECC steel plate, then the number of parts is reduced, but fabrication cost increases
Solution Approach 1:
The guide parts are formed as integral portions of the feeding base structure rather than being separate components. The feeding base includes guide parts formed as integral portions of the base body, eliminating the need for separate guide parts and reducing the total number of components while maintaining assembly precision.
Solution Approach 2:
The invention changes the manufacturing approach by forming guide parts directly in the SECC steel plate through pressing or bending operations, rather than using complex outsert molds. This simplifies the manufacturing process and reduces fabrication costs while maintaining the reduced part count advantage.
3Adaptability or versatility
If multiple separate parts are used, then assembly flexibility is improved, but manufacturing cost and part variability increase
Solution Approach 1:
The guide parts are integrated directly into the feeding base structure rather than being separate components. The feeding base includes guide parts formed as integral portions of the base body, eliminating the need for separate guide parts and reducing the total number of components while maintaining assembly precision.
Data Source
AI summary
Disclosed herein are an optical disc drive and a feeding base. The feeding base is coupled to a spindle motor base and a stepping motor base. Main and sub-shafts for guiding inner and outer circumferential movements of an optical pickup unit are mounted on the feed base. The feeding base is made of a steel plate of a rectangular rim shape having an empty center corresponding to a space in which the optical pickup unit moves, the feeding base includes two guides for guiding the coupling location of the spindle motor base, and at least one guide of the two guides is formed by protruding the steel plate to form a funnel shape such that the side cross section of the at least one guide may have a slope section corresponding to a cone and a straight-line section corresponding to a cylinder.