Detachable Steering Post for Saddle Riding Vehicle Frame
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing saddle riding type vehicle frame structures face challenges in efficiently supporting the steering shaft above the main frame body while maintaining a suppressed height for the front wheel suspension device, which limits the arrangement of vehicle functional components and requires additional components for steering support.
Innovation Solution
A frame structure with a detachable steering post that includes a rotating support member and column members to support the steering shaft, allowing for various handle positions and reduced component weight, while also accommodating vehicle functional components like the air cleaner box within the limited space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a steering post is provided to support the steering shaft above the main frame body, then the steering shaft can be properly supported, but the vehicle height increases and space for functional components is reduced
Solution Approach 1:
The steering post utilizes the vertical dimension by extending upward from the main frame body to support the steering shaft at an elevated position. The column members are arranged vertically to provide support while minimizing horizontal space occupation, effectively using the height dimension to resolve the contradiction between support reliability and space efficiency.
Solution Approach 2:
The steering post is segmented into multiple column members (typically three or more) that are distributed around the central axis. This segmentation allows the support structure to be more space-efficient and provides multiple load paths to support the steering shaft reliably while occupying minimal vertical projection area.
2Stability of the object's composition
If multiple stays are provided to support each component in the steering post, then structural stability is improved, but the number of components and overall weight increase
Solution Approach 1:
Multiple column members are merged into a single integrated steering post structure that functions as one unified component. The column members are positioned to work together as a group, providing mutual support and stability while being manufactured and installed as a single assembly, thereby reducing the total number of separate components needed.
Solution Approach 2:
The column members serve multiple functions simultaneously: they provide structural support for the steering shaft, define the spatial envelope for functional components, and distribute loads across the main frame body attachment points. This multi-functionality reduces the need for additional specialized components.
3Device complexity
If the main frame body supports both the power unit and front wheel suspension device, then the frame structure is simplified, but the height of the main frame body must be increased to accommodate the steering shaft support
Solution Approach 1:
The steering shaft support function is added in the vertical dimension by extending the steering post upward from the existing main frame body. This allows the main frame body to maintain its compact horizontal configuration while the steering shaft is supported at an elevated position through the vertical extension of the steering post structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enables efficient support of the steering shaft, allows for different handle positions, reduces component weight, and optimizes the use of space for vehicle functional components, enhancing the structural efficiency and versatility of the saddle riding type vehicle.
Implementation Method 1
the rotating support member may be configured to support the steering shaft via a bearing that can be automatically centered
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A frame structure (100) of a saddle riding type vehicle, the frame structure (100) includes a main frame body (6) configured to support the power unit and the front wheel suspension device (4); and a steering post (13) configured to support a steering shaft (12) at above of the main frame body (6), wherein the steering post (13) includes a shaft holder (14) configured to rotatably support the steering shaft (12), and a plurality of column members (15, 16) that extend downward from the shaft holder (14) and that are fixed to the main frame body (6), and wherein the steering post (13) is detachable with respect to the main frame body (6).