Disk Drive Driving Unit Restricting Mechanism
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Solution Overview
Problem
Existing disk changing devices lack a mechanism to prevent the optical pickup unit from moving to the driving position during transportation, leading to potential collisions and damage from external vibrations, which can apply sudden loads to the rotary member.
Innovation Solution
A disk device with a restricting mechanism that moves between a restriction position and a restriction-removed position to prevent the driving unit from pivoting to the driving position, using a common driving member to control the movement of both the driving unit and the restricting mechanism, and incorporating a link mechanism and lever to smoothly operate the restricting protrusion and movable guide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no restricting mechanism is provided, then the device structure is simpler, but the driving unit can move to the driving position during transportation causing collision and damage
Solution Approach 1:
The restricting mechanism is integrated with the driving unit itself. The restricting convex portion is formed on the driving unit, and the restricting protrusion is formed on the rotary member, combining the restricting function with existing components rather than adding separate independent mechanisms.
Solution Approach 2:
The rotary member serves dual functions: it pivots the driving unit between withdrawal and driving positions, and it also provides the restricting protrusion that prevents unintended movement during transportation. This multi-functionality reduces the need for additional dedicated restricting components.
2Reliability
If a separate restricting mechanism is added, then movement prevention is more reliable, but the number of parts increases and manufacturing cost increases
Solution Approach 1:
The restricting function is merged into the existing driving unit and rotary member structure. The restricting convex portion and restricting protrusion are formed as integral parts of these components, eliminating the need for separate restricting mechanism parts and reducing manufacturing complexity.
Solution Approach 2:
Existing components are designed to perform multiple functions. The rotary member not only pivots the driving unit but also provides the restricting protrusion. The driving unit not only holds the optical pickup but also provides the restricting convex portion, reducing total part count.
3Ease of operation
If the restricting mechanism and driving unit are controlled by separate driving members, then control is more precise, but the device complexity and manufacturing cost increase
Solution Approach 1:
A single driving member is designed to perform multiple control functions. It both pivots the driving unit between positions and controls the restricting protrusion movement, eliminating the need for separate driving members while maintaining coordinated control of both functions.
Solution Approach 2:
The control functions for the driving unit and restricting mechanism are merged into a single driving member system. This unified control approach reduces the number of actuators needed while ensuring coordinated operation of both the driving unit positioning and restriction functions.
Data Source
AI summary
A disk device includes a driving unit and a restricting mechanism that are disposed in a housing. The driving unit moves between a withdrawal position and a driving position. The withdrawal position is separated from an outer peripheral edge of a disk that is positioned in the housing, and the driving position is where the disk is rotationally driven. When the driving unit is at the withdrawal position, the restricting mechanism restricts movement of the driving unit toward the driving position.