Hollow Welded Frame Air Venting Design
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Solution Overview
Problem
The existing hollow welded frame structures for saddle type vehicles require multiple air vent ports for air removal during welding, which compromises the vehicle's outer appearance and makes them prone to water and paint intrusion, complicating the painting process.
Innovation Solution
A hollow welded assembled frame structure with a reduced number of air vent ports, where only one atmospheric air communicating hole is provided at one end of a hollow member, and hidden air vent ports are strategically placed to facilitate air venting without being externally visible, preventing water and paint intrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple air vent ports are provided for each welded portion of hollow members, then air venting during welding is improved, but the vehicle outer appearance is compromised and water intrusion risk increases
Solution Approach 1:
Multiple air vent ports are merged into a single atmospheric air communicating hole located at one end of the hollow member. This consolidation maintains the air venting function while eliminating multiple visible ports on the vehicle exterior, thus resolving the contradiction between functional reliability and aesthetic appearance.
Solution Approach 2:
The air venting function is relocated from the lateral surfaces of hollow members to the terminal end of the structure. By positioning the atmospheric air communicating hole at one end, the design moves the vent port to a location that is less visually prominent and can be strategically placed to minimize impact on vehicle appearance.
2Reliability
If multiple air vent ports are opened to atmospheric air, then air venting during welding is improved, but water intrusion into hollow portions increases
Solution Approach 1:
Multiple air vent ports are consolidated into a single atmospheric air communicating hole, reducing the total number of openings exposed to external elements. This merger maintains adequate air venting capability while minimizing the cumulative risk of water intrusion through multiple separate ports.
Solution Approach 2:
The single atmospheric air communicating hole is strategically positioned at one end of the hollow member, away from areas prone to water accumulation. This preliminary placement decision prevents water from easily entering the hollow portions during vehicle operation, addressing the water intrusion risk before it occurs.
3Reliability
If multiple air vent ports are provided, then air venting during welding is improved, but labor and time required for paint discharge increase
Solution Approach 1:
Multiple air vent ports are merged into a single atmospheric air communicating hole, which serves as the sole exit for air and liquid paint during the dipping process. This consolidation simplifies the paint discharge process, allowing paint to exit through one centralized location rather than requiring coordination of multiple ports, thereby reducing labor and time requirements.
Solution Approach 2:
The atmospheric air communicating hole is positioned at one end of the hollow member, creating a favorable configuration for paint discharge during dipping. This preliminary positioning ensures that liquid paint can efficiently exit the hollow portion through the single port without requiring additional discharge mechanisms or extended processing time.
Data Source
AI summary
A lower frame and an upper frame, which configure a main frame, are connected to each other by a first reinforcing frame, a second reinforcing frame, a third reinforcing frame, a fourth reinforcing frame, a fifth reinforcing frame, and a sixth reinforcing frame. A first engine hanger is welded to a lower end of the lower frame such that an atmospheric air communicating hole formed in a side face of the first engine hanger communicates with the inside of the lower frame. A first air vent port and a second air vent port for the lower frame and the upper frame and third air vent port formed in a third reinforcing frame and a fourth reinforcing frame are formed in side faces of the abutting portions so that they are not observed from the outside.