Sidestand Structure Space Optimization
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Solution Overview
Problem
The existing sidestand structure in two-wheeled motor vehicles requires a large space to accommodate the step, sidestand support portion, and spring lock portion, leading to inefficiencies in design and functionality.
Innovation Solution
The sidestand structure is redesigned with the spring lock portion located above the pivot frame and overlapping the swing arm, allowing the sidestand support portion and spring lock portion to be positioned adjacently without interfering with each other, utilizing the space effectively and optimizing the placement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the spring lock portion is located in a position to protrude outward of the outer surface of the pivot frame, then the sidestand support portion and spring lock portion can be easily arranged, but the space required to accommodate the step, sidestand support portion, and spring lock portion becomes large
Solution Approach 1:
The spring lock portion is repositioned from a lateral arrangement (protruding outward from the pivot frame) to a vertical arrangement (above the pivot frame), utilizing the vertical dimension to reduce the horizontal space footprint. This dimensional shift allows the step holder to be more compact while maintaining all necessary functional components.
2Area of stationary object
If the step holder is positioned to accommodate both the step and sidestand support portion with the spring lock portion, then the space requirement is reduced, but the components may interfere with each other
Solution Approach 1:
By moving the spring lock portion to a vertical position above the pivot frame, the patent creates spatial separation between the step (which remains in the horizontal plane) and the spring lock portion. This vertical displacement eliminates potential interference while maintaining a compact overall structure.
Solution Approach 2:
The step holder is designed as an integrated component that separately accommodates the step and sidestand support portion in distinct spatial zones. The step protrudes horizontally while the sidestand support portion is positioned vertically, with the spring lock portion located above, creating clear functional segmentation that prevents interference.
3Area of stationary object
If the spring lock portion is located above the pivot frame overlapping the swing arm, then the overall space is reduced, but the spring durability may be affected
Solution Approach 1:
Positioning the spring lock portion vertically above the pivot frame allows the spring to be arranged in a compact configuration that reduces overall space while maintaining adequate clearance and mounting geometry for reliable spring operation and durability.
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 reduces the overall space required for the sidestand and spring lock components, enhances the durability of the spring, and improves the stability and ease of operation of the sidestand, while maintaining the retracted position effectively.
Implementation Method 1
a coil-shaped spring is provided between the sidestand and a spring lock portion fixedly located on the body frame side
Data Source
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AI summary
To provide a structure which prevents a space to arrange a step (38), a sidestand support portion (39d), and a spring lock portion (39a) from being large in a two-wheeled motor vehicle in which a step holder for supporting the step is abuttingly fixed on an outer surface of a lower portion of a pivot frame (17), a spring (41) is provided between a sidestand (40) and the spring lock portion (39a), the sidestand (40) can rotate between a usage position and a retracted position, and the spring lock portion (39a) is fixedly located on the body frame side. A step holder (39) located either left or right of a body frame (FA) includes the sidestand support portion (39d) and the spring lock portion (39a) located above the sidestand support portion (39d). The spring lock portion (39a) is located in a position to overlap a pivot frame (17) when viewed from back in the vehicle longitudinal direction and at least partially overlap a swing arm (24) as seen in the side view.