EAMR Laser Assembly Mounting on Flexure Through-Hole
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Solution Overview
Problem
Conventional energy assisted magnetic recording (EAMR) disk drives face challenges in coupling the EAMR transducer with the flexure, particularly when the laser orientation needs to be adjusted, such as a ninety-degree rotation, while maintaining the slider's support with the flexure.
Innovation Solution
A head gimbal assembly (HGA) is designed with a slider, a laser assembly mounted on the back side, and a flexure featuring a through-hole to accommodate the laser assembly, with laser leads extending over the hole for electrical and mechanical connection, allowing for robust coupling and orientation flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the laser assembly is mounted on the back side of the slider with a ninety-degree rotation, then the laser orientation is improved, but the coupling with the flexure becomes more complex
Solution Approach 1:
The flexure is divided into separate functional regions: a mounting region with a through-hole for the laser assembly and a coupling region for the slider. This segmentation allows the laser to be mounted independently on the back side of the slider with rotated orientation while maintaining simple coupling between the slider and flexure assembly.
Solution Approach 2:
The through-hole in the flexure acts as an intermediary structure that accommodates the laser assembly and allows laser leads to pass through. This intermediary element enables the rotated laser orientation and back-side mounting without requiring complex coupling mechanisms between the slider and flexure.
2Adaptability or versatility
If the laser assembly is accommodated through a through-hole in the flexure, then the orientation flexibility is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The through-hole in the flexure serves multiple functions: it accommodates the laser assembly body, allows passage of laser leads, and provides structural support. This multi-functionality reduces the need for separate alignment features and simplifies manufacturing while maintaining orientation flexibility.
3Ease of manufacture
If the laser leads extend over the through-hole for electrical connection, then the ease of manufacture is improved, but the reliability of electrical connection may be affected
Solution Approach 1:
The laser leads are configured to extend over the through-hole in advance, positioning them for electrical connection to the laser assembly before final assembly. This preliminary positioning simplifies the assembly process and ensures proper electrical connectivity is achieved during manufacturing.
Data Source
AI summary
A method and system for providing a head gimbal assembly (HGA) for an energy assisted magnetic recording (EAMR) disk drive including media is described. The HGA includes a slider, a laser assembly, and a flexure. The slider has a front side, a back side, and at least one EAMR transducer residing in proximity to the front side. The front side corresponds to an air-bearing surface (ABS) that resides in proximity to the media during use. The laser assembly includes a laser for providing energy to the EAMR transducer and is mounted on the back side of the slider. The flexure has at least one laser lead and a through-hole therein. The through-hole is configured to accommodate the laser assembly. A portion of the at least one laser lead extends over the through-hole and electrically connects the at least one laser lead with the laser.