Vehicle Webbing Guide Structure with Separated Fixing Portions
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Solution Overview
Problem
Existing vehicle webbing guide structures require multiple reinforcing components to achieve sufficient rigidity, leading to increased weight and manufacturing costs due to the need for multiple panel members to support loads applied during seatbelt use.
Innovation Solution
A vehicle webbing guide structure that disperses loads across a pillar member and side wall member using a guide member with separated fixing portions, forming a closed cross-section and allowing for torsion deformation, thereby enhancing rigidity without increasing the number of components, and utilizing a symmetric guide member design for cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple panel members are used to reinforce the pillar member, then the rigidity for supporting webbing load is improved, but the number of components and manufacturing cost increase
Solution Approach 1:
The guide member integrates multiple functions: it guides the webbing through its insertion hole, supports the webbing load through its fixing portions, and eliminates the need for separate reinforcing panel members. By combining the guiding and load-supporting functions into a single component, the patent achieves high rigidity without increasing the number of parts.
Solution Approach 2:
The guide member serves multiple purposes: it acts as a guide for webbing insertion, a structural support for load-bearing, and a connecting element between the pillar member and side wall member. This multi-functionality replaces what would traditionally require multiple separate components including reinforcing panel members.
2Strength
If multiple panel members are used to reinforce the pillar member, then the rigidity for supporting webbing load is improved, but the weight increases
Solution Approach 1:
By merging the load-supporting function into the guide member itself, the patent eliminates the need for additional reinforcing panel members that would add weight. The guide member's fixing portions directly engage with the pillar member and side wall member to provide the necessary structural support without extra components.
3Ease of manufacture
If a single bolt is used to fix the guide member, then the ease of manufacture is improved, but the reliability under large drawing load is worsened
Solution Approach 1:
The fixing system is segmented into multiple fixing portions on the guide member, each capable of being fixed to the vehicle body. This segmentation allows the load to be distributed across multiple attachment points rather than concentrated on a single bolt, improving reliability while maintaining manufacturing simplicity through standardized fixing mechanisms.
Data Source
AI summary
A vehicle body includes a pillar member disposed on an outer side of a cabin in a vehicle width direction and a side wall member located closer to inside in the vehicle width direction than the pillar member and coupled to the pillar member. The guide member for guiding drawing of a webbing includes a front edge fixing portion coupled to the pillar member, a rear edge fixing portion coupled to the side wall member, and a guide body whose two ends are coupled to the front and rear edge fixing portions and which forms a webbing drawing opening together with the pillar member and the side wall member. The front and rear edge fixing portions are separated from each other with an interval greater than or equal to a width of the webbing and coupled to the pillar member and the side wall member.