Saddle Vehicle Air Intake Duct Coupling via Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing air intake structure for saddle riding vehicles is complicated to attach due to the blind end of the air box, making it difficult to secure air tightness and ensure reliable coupling with the head tube.
Innovation Solution
The air intake structure features a separate rear side intake duct with a flange portion that couples to the air box from the inside, allowing for easier attachment and improved air tightness by forming an intake passage between the main frames and the head tube, with a tubular attachment that expands radially to secure the duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distal end of the air box is inserted into the head tube to ensure coupling, then air tightness is secured, but the attachment process becomes complicated and difficult
Solution Approach 1:
The air intake system is divided into separate components: the air box, the rear side intake duct, and the head tube. The rear side intake duct acts as an independent coupling element that connects the air box to the head tube, allowing each component to be attached separately rather than requiring complex insertion of the air box distal end into the head tube.
Solution Approach 2:
The rear side intake duct serves as an intermediary component between the air box and the head tube. It provides a dedicated coupling pathway that simplifies the attachment process while ensuring air tightness, eliminating the need for direct insertion of the air box distal end into the head tube.
2Reliability
If the distal end of the air box forms a blind portion, then coupling is achieved, but attachment becomes difficult
Solution Approach 1:
Instead of inserting the distal end of the air box into the head tube, the invention inverts the approach by providing a rear side intake duct that extends from the head tube rearward and couples to the air box. This reverses the insertion direction and simplifies the attachment process while maintaining coupling reliability.
Solution Approach 2:
The rear side intake duct acts as an intermediary that provides a dedicated coupling interface between the head tube and air box, eliminating the blind portion insertion problem. The duct includes an opening that allows easy attachment while ensuring reliable coupling.
Data Source
AI summary
An air intake structure of a saddle riding vehicle is disposed in the saddle riding vehicle in which a frame including a left and right pair of main frames and an air box are disposed, an intake passage is disposed between the main frames and an outer periphery of the head tube, and the intake passage includes: a front side intake duct that extends forward; and a rear side intake duct that couples the air box to the head tube. In the air intake structure of the saddle riding vehicle, the rear side intake duct is a separate body from the air box, the air box has a front surface on which an opening inserted through the rear side intake duct is provided, and the rear side intake duct is coupled to an intake passage from an inside of the air box through the opening.