Steering Apparatus Cover Retention and Debris Management
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Solution Overview
Problem
The existing steering apparatus designs face issues where the cover member can unintentionally fall out during installation, and flying debris such as water, dirt, or dust accumulates in the gap between the protective wall and the cover member, leading to potential corrosion and ventilation restrictions.
Innovation Solution
A steering apparatus with a cover member that has a breathable cover member with a ventilation mechanism, including a protective wall with cutouts along its outer circumference to prevent the cover member from falling out and to direct airflow, while also preventing debris accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective wall is provided along the outer circumference of the cover member to prevent it from falling out, then the cover member is secured in position, but flying debris such as water, dirt, or dust accumulates in the gap between the protective wall and the cover member
Solution Approach 1:
The protective wall is divided into multiple segments along its height: an upper portion that extends upward to prevent cover member displacement, and a lower portion with cutouts that allows debris to drain downward. This segmentation resolves the contradiction by providing both retention function and debris prevention function in different spatial zones of the same structure.
Solution Approach 2:
Different portions of the protective wall have different structural qualities: the upper portion has a continuous structure for retention, while the lower portion has cutouts for drainage. This local differentiation allows each portion to perform its specific function optimally, preventing both cover member fall-out and debris accumulation simultaneously.
2Use of energy by moving object
If the cover member is made breathable to ensure ventilation, then airflow is maintained, but the cover member becomes more susceptible to external forces that may cause it to fall out
Solution Approach 1:
The protective wall extends in the vertical dimension beyond what would be minimally required for retention alone. By providing sufficient height and appropriate structural configuration in this dimension, the wall can simultaneously provide retention support and maintain ventilation functionality without compromising either objective.
Data Source
AI summary
A steering apparatus includes: a rotation shaft that is caused to rotate by steering of a steering unit; a housing that accommodates at least a part of the rotation shaft; an opening that is formed in the housing so as to communicate an inside of the housing with an outside thereof; a cover member that covers the opening while ensuring ventilation via the opening; and an outer circumferential wall that is provided along an outer circumference of the cover member, wherein the outer circumferential wall has a cutout in a lower portion in a vertical direction of the outer circumferential wall.