Integrated Motor Mount and Suspension Pivot for Compact E-Bikes
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Solution Overview
Problem
Traditional e-bikes are heavy and bulky due to the need to package motive power sources and electrical power, which affects their performance and efficiency.
Innovation Solution
A motive power source is integrated into the frame and suspension linkage of a two-wheeled vehicle, using a housing with bosses for securement and an axle assembly that allows for a compact and lightweight design, with a suspension linkage that includes multiple securement structures and instantaneous velocity centers to enhance suspension performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a separate motor mount and suspension pivot are used, then the vehicle can achieve good suspension performance, but the overall weight and bulk increase
Solution Approach 1:
The patent combines the motor mount and suspension pivot into a single integrated structure. The motor mount is designed with a pivot point that serves dual functions: securing the motor to the vehicle frame and acting as the suspension pivot point. This merging of functions eliminates the need for separate mounting brackets and suspension mounting points, thereby reducing overall weight and component count while maintaining suspension performance.
Solution Approach 2:
The motor mount structure is designed with multi-functionality, serving both as a motor securing mechanism and as a suspension system pivot point. The integrated mount includes features such as securing lugs for motor attachment and a pivot point that accommodates both motor mounting and suspension linkage rotation. This universal design allows a single component to fulfill multiple functions that traditionally required separate parts.
2Productivity
If traditional separate mounting structures are used, then installation is straightforward, but the vehicle becomes bulky and less efficient
Solution Approach 1:
The integration of motor mount and suspension pivot into a single structure reduces the volume occupied by mounting hardware. By combining multiple functions into one component, the overall space required for motor installation and suspension mounting is minimized, leading to a more compact vehicle design with improved efficiency.
Solution Approach 2:
The motor mount is designed with nested features where the suspension pivot point is incorporated within the motor mount structure itself. The pivot point is positioned such that it is nested within or integrated with the motor securing lugs and mounting features, allowing the suspension linkage to rotate about a point that is part of the motor mounting assembly, thereby saving space.
Data Source
AI summary
Disclosed herein are examples of motive power sources suitable to power a two-wheeled vehicle. The vehicle may include a suspension linkage and a suspended body. In some examples, the motive power source may include a housing with a boss extending therefrom. The boss may include a first securement structure. The securement structure may include an instantaneous velocity center of the suspension linkage when coupled to the two wheeled vehicle. In some examples, a second securement structure is formed in the suspended body, a bottom link forms a portion of the suspension linkage, the bottom link includes a third securement structure, and an axle is coupled to the first, second, and third apertures. In some examples, the first, second, and third apertures are concentric with the axle.