Optical Disk Pickup Module Vibration Isolation via Elastic Mounting
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Solution Overview
Problem
Conventional optical disk devices in small mobile equipment face instability due to amplified vibrations when installed, leading to suboptimal reading and writing characteristics, and are difficult to adjust for precise performance.
Innovation Solution
The optical disk device is designed with a pickup module fixed to a chassis via multiple elastic bodies, which is then secured to the mobile information processing apparatus, reducing vibrations and allowing for adjustable settings to maintain stable performance, while the flexible cable is protected within the chassis and frame, ensuring consistent load adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pickup module is fixed to the chassis using multiple elastic bodies, then the stability of the optical disk device is improved and vibrations are reduced, but the device complexity increases
Solution Approach 1:
The patent introduces elastic bodies as intermediary elements between the pickup module and the chassis. These elastic bodies serve as mediators that provide vibration isolation and stable mounting without requiring complex fixed structures. The elastic bodies absorb vibrations and maintain stable contact, resolving the contradiction between stability and complexity by using a simple yet effective intermediary component.
2Reliability
If the flexible cable is protected within the chassis and frame, then the reliability of the cable connection is improved, but the device complexity increases
Solution Approach 1:
The patent applies the nesting principle by placing the flexible cable inside the chassis and frame structure. The cable is nested within the existing structural components, which provides protection and maintains cable connection reliability without adding separate protective elements. This nesting approach resolves the contradiction by utilizing existing structural space for cable protection.
3Ease of operation
If the optical disk device is made smaller and lighter for mobile equipment, then the ease of operation is improved, but the manufacturing precision becomes more difficult to maintain
Solution Approach 1:
The patent applies parameter changes by using elastic bodies with specific material properties and mechanical characteristics. The elastic bodies are designed with particular stiffness, damping, and geometric parameters that enable the compact device to maintain manufacturing precision despite size constraints. By carefully selecting and designing the elastic bodies with appropriate parameters, the patent achieves both compact size and high precision.
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 configuration stabilizes the optical disk device's performance, reduces external vibration impact, and allows for precise adjustments, resulting in a smaller, lighter device with improved reading and writing characteristics.
Implementation Method 1
The pickup module is fixed to the chassis only via multiple elastic bodies
Data Source
AI summary
An optical disk device which includes a pickup module; a control board for processing the electrical signal received by a pickup from an optical disk and controlling sliding of the pickup; and a flexible cable for coupling the pickup and the control board. The pickup module includes the pickup for reading information on a recording face of the optical disk; a spindle motor for retaining and rotating the optical disk; and a frame on which the spindle motor is disposed. The control board is fixed to a chassis, and the pickup module is fixed to the chassis only via elastic bodies. The cable is disposed to be surrounded by the chassis and the pickup module.