Motorcycle Air Bag Cover Retention via Segmented Hooks
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Solution Overview
Problem
Existing air bag support belt cover structures for motorcycles are prone to coming off or flying off during the expansion and deployment of the air bag, and they require complex assembly processes and additional parts for fixation.
Innovation Solution
The air bag support belt cover structure features bosses on its rear face, which are deformed to fix a plate, and engaging hooks that secure the cover between the fuel filler lid and top shelter, allowing for easy assembly and reduced parts count, with adjustable tension load through varying hook configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hook protrusions are used to connect the cover member to the storage section, then the cover member can be attached to protect the support belt, but the cover member may come off due to impact or fly off when the air bag deploys
Solution Approach 1:
The connection structure is divided into multiple independent engagement points: hook protrusions for attachment and multiple recesses (first, second, and third recesses) for securing. This segmentation distributes the retention forces across multiple locations, preventing the cover member from coming off during air bag deployment.
Solution Approach 2:
The cover member is designed with pre-positioned hook protrusions and recesses that create preliminary engagement before any impact or deployment occurs. The first recess engages with the hook protrusion in advance, and additional recesses provide backup engagement points, preventing the cover member from flying off during unexpected events.
2Reliability
If multiple fixing parts and complex assembly processes are used to prevent the cover member from coming off, then the retention reliability improves, but the device complexity and assembly time increase
Solution Approach 1:
Multiple fixing functions are merged into a single integrated cover member structure. The hook protrusions and multiple recesses (first, second, and third recesses) are all part of the same cover member, eliminating the need for separate fixing parts and reducing assembly complexity while maintaining high retention reliability.
Solution Approach 2:
The cover member serves multiple functions simultaneously: it protects the support belt from weather, attaches to the storage section via hook protrusions, and secures itself through multiple recesses that engage with corresponding structures. This multi-functionality reduces the need for additional specialized components.
3Productivity
If the support belt storage position is not predetermined during assembly, then flexibility in assembly is maintained, but assembly errors increase and working processes become longer
Solution Approach 1:
The cover member is designed with pre-positioned hook protrusions and multiple recesses that automatically guide the support belt to the correct storage position during assembly. This preliminary positioning structure ensures accurate placement without requiring complex assembly instructions or multiple adjustment steps.
Solution Approach 2:
The cover member's structure with hook protrusions and recesses creates a self-aligning, self-positioning system. During assembly, the components naturally fit together in the correct position without requiring external guidance or complex procedures, improving both precision and efficiency.
Data Source
AI summary
An air bag support belt cover structure is suitable for an air bag attached to a motorcycle. A right air bag support belt cover covers the top of a storage space for a support belt connected to an air bag. The belt cover is fixed to the support belt by set plates and squeezed portions each formed by squeezing a boss on the rear face of the belt cover. Therefore, the belt cover does not fly off when the support belt deploys along with the expansion and deployment of the air bag. A plurality of engaging hooks provided in the outer edge of the belt cover come off engaging slots located in the vehicle body at the instant when the tension load of the support belt reaches a predetermined value. The support belt can be fixed to the belt cover by a fitting groove formed on the boss and a collar.