Motorcycle Side Stand Layout Freedom via Opposite-Side Switch and Spring Placement
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Solution Overview
Problem
The existing motorcycle side stand systems have limited layout flexibility due to the fixed positional relationship between the side stand, return spring, and rotary side stand switch, making it difficult to arrange additional vehicle components like a quick shifter near the side stand switch.
Innovation Solution
The motorcycle design includes a side stand, a support shaft, a rotary side stand switch, a pin, a first spring stop member, and a return spring, where the return spring and side stand switch are arranged on opposite sides of the side stand, and the pin and first spring stop member are positioned to allow for higher layout freedom, enabling easier placement of components like a quick shifter without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the rotary side stand switch and return spring are arranged on the same side of the side stand, then the structure is simple, but the layout freedom is limited making it difficult to arrange additional components
Solution Approach 1:
The patent divides the switch assembly into two separate components: the rotary side stand switch and the return spring. By positioning these components on opposite sides of the side stand (switch on the outer side, spring on the inner side), each component can be independently arranged without interfering with the other, thereby increasing layout freedom while maintaining structural simplicity
Solution Approach 2:
The patent utilizes the radial dimension around the side stand pivot point to arrange components. Instead of stacking components linearly in one direction, the switch and return spring are positioned at different radial locations (opposite sides of the side stand), effectively using spatial distribution to resolve layout constraints
2Volume of moving object
If the pin and first spring stop member are positioned close together, then the structure is compact, but additional components cannot be arranged nearby
Solution Approach 1:
The patent employs asymmetric positioning of the pin and first spring stop member relative to the side stand pivot point. The pin is positioned at a specific radial distance and angle, while the first spring stop member is positioned at a different radial distance and angle. This asymmetric arrangement creates unused spatial zones that can accommodate additional components like a quick shifter, while maintaining overall structural compactness
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 provides a high degree of freedom in layout for the side stand switch and associated components, allowing for compact and interference-free arrangement of additional components like a quick shifter near the side stand switch, enhancing the overall design flexibility and usability.
Implementation Method 1
a return spring (74) arranged inward in the vehicle width direction relative to the side stand (70)
Data Source
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AI summary
A motorcycle (1) includes a support shaft (73) configured to rotatably support a base portion (71) of a side stand (70), a rotary side stand switch (80), a pin (77) extending outward in the vehicle width direction from a bracket (76), an engagement shaft (78) extending inward in the vehicle width direction from the bracket (76), and a return spring (74) configured to engage with the engagement shaft (78). The pin (77) engages with a housing (82) of the side stand switch (80) to restrict the rotation of the housing (82). The side stand switch (80) is arranged outward in the vehicle width direction relative to the base portion (71) of the side stand (70). The return spring (74) is arranged inward in the vehicle width direction relative to the side stand (70). The engagement shaft (78) is arranged at a position that is off a center line (77c) of the pin (77).