Human-Powered Vehicle Drive Unit With Adjustable Battery Holder Mount
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Solution Overview
Problem
Existing drive units for human-powered vehicles do not effectively integrate battery units, leading to inefficiencies in positioning and mounting, which affects the overall performance and compatibility with different battery types and dimensions.
Innovation Solution
A drive unit with a holder mount that allows for selective mounting of a battery holder at multiple positions in a predetermined linear direction, using features like male and female threads, elongated holes, and a frame mount to ensure proper alignment and interference minimization, thereby positioning the battery unit close to the drive unit for optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery unit is mounted separately from the drive unit, then the mounting position can be adjusted, but the distance between the battery unit and drive unit increases, affecting performance
Solution Approach 1:
The holder mount is integrated into the drive unit as a unified structure, combining the battery holder function with the drive unit base. This merging allows the battery unit to be positioned close to the drive unit while maintaining mounting adjustability through the elongated hole and multiple mounting position features within the integrated structure.
Solution Approach 2:
The holder mount serves multiple functions: it provides structural support for the battery holder, enables positional adjustment through the elongated hole, and facilitates secure mounting via threads. This multi-functionality allows close positioning while maintaining adaptability for different battery units and mounting requirements.
2Device complexity
If the holder mount is fixed at a single position, then the structure is simple, but it cannot accommodate different battery unit dimensions and types
Solution Approach 1:
The holder mount incorporates an elongated hole that enables dynamic positional adjustment along the longitudinal direction, allowing the battery holder to be positioned at multiple locations. This dynamic feature provides adaptability for different battery unit dimensions while maintaining a relatively simple overall structure.
Solution Approach 2:
The holder mount is designed as a separate component that can be selectively mounted on the drive unit base, providing modular adaptability. This segmentation allows the holder mount to accommodate different battery types while keeping the main drive unit structure simple and unchanged.
3Ease of manufacture
If the holder mount and frame mount are at the same position, then the mounting process is simple, but interference occurs during mounting
Solution Approach 1:
The holder mount and frame mount are positioned at different locations along the longitudinal direction of the drive unit. This spatial separation in one dimension eliminates mounting interference while maintaining a relatively simple mounting process, as both mounts can be installed independently without conflicting with each other.
4Stability of the object's composition
If the battery holder is rigidly fixed, then the mounting is stable, but it cannot accommodate dimensional tolerances
Solution Approach 1:
The elongated hole in the holder mount provides controlled flexibility that allows adjustment for dimensional tolerances while maintaining stable mounting. The battery holder can be positioned at multiple locations within the elongated hole to accommodate variations in battery unit dimensions, ensuring stable and reliable mounting despite manufacturing tolerances.
Data Source
AI summary
A drive unit is configured to be provided to a human-powered vehicle. The drive unit includes a base on which a crankshaft is provided, and a holder mount provided on the base. The holder mount is configured to selectively mount a battery holder, which is configured to hold a battery unit, at a plurality of positions in a predetermined linear direction.