Disc Drive Lock Release Unit Integrating Pickup Transport
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Solution Overview
Problem
The existing disc drive designs require additional space and increased manufacturing costs due to the separate installation of a solenoid for the lock release unit and the use of multiple parts, such as bushings, which complicates the lock release mechanism.
Innovation Solution
A disc drive design that integrates a lock release unit driven by the pickup transporting unit, utilizing a lock lever unit with a supporting hole formed by a burring process and a hook unit to combine with a locking protrusion, along with a link unit and spring mechanism to transmit rotational force and apply elastic force for releasing the tray from the main chassis, reducing the number of parts and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solenoid is separately installed from the lock release unit, then the locking function can be achieved, but additional space is required and manufacturing costs increase
Solution Approach 1:
The solenoid is integrated into the lock release unit as a single component rather than being separately installed. The lock release unit includes a solenoid receiving hole that receives the solenoid, forming an integrated assembly that reduces the number of parts and simplifies installation while maintaining the locking function
Solution Approach 2:
The lock release unit serves multiple functions: it provides the solenoid receiving hole for the locking mechanism, includes a supporting hole for rotational movement, and integrates the hook unit for engagement. This multi-functional design eliminates the need for separate components and reduces overall device complexity
2Ease of operation
If a bushing is caulked in a supporting hole to rotate with the tray, then rotational movement is enabled, but the overall manufacturing cost increases due to increased number of parts
Solution Approach 1:
The supporting hole is formed directly in the lock release unit body through a burring process, eliminating the need for a separate bushing component. The hole itself provides the rotational interface with the tray, combining the support and rotation functions into a single integrated structure
Solution Approach 2:
The bushing component is completely removed from the design. Instead of installing a separate bushing in the supporting hole, the patent uses the hole formed by the burring process directly, extracting the unnecessary intermediate component while maintaining the required rotational functionality
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integrated design reduces manufacturing costs and simplifies the lock release mechanism by using fewer parts and a more efficient power transmission system, ensuring secure locking and reliable tray release without additional space requirements.
Implementation Method 1
a spring which is fixed to the lock lever unit and the connecting unit and applies an elastic force in the direction in which the hook unit is combined with the locking protrusion
Implementation Method 2
the supporting hole is formed by a burring process onto the body
Data Source
AI summary
Provided is a disc drive including a tray which receives a disc thereon, slides into and out of a main chassis, and includes a pickup transporting unit which linearly moves a pickup base in a radial direction of the disc. The disc drive also includes a lock release unit which is driven by the pickup transporting unit to release locking of the tray from the main chassis, and includes a lock lever unit which includes a supporting hole for rotating the lock lever unit, and a hook unit to be combined with a locking protrusion arranged at the main chassis.