Articulating Bicycle Rack With Crank Restraint for Easy E-Bike Loading
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Solution Overview
Problem
Traditional vehicular bicycle racks are difficult to load, lack stability, especially when handling heavy or cumbersome bicycles like e-bikes, and fail to provide adequate retention, posing risks during transport.
Innovation Solution
A bicycle rack design featuring an articulating wheel support and crank restraint that allows bicycles to be rolled onto the rack with minimal lifting, providing increased security and stability through a mounting post configured for a hitch of a towing vehicle, with adjustable articulating wheel support and a crank restraint that securely holds the bicycle without additional straps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional vehicular bicycle racks are used, then the structure is simple, but the ease of operation deteriorates due to difficulty in loading heavy e-bikes
Solution Approach 1:
The wheel support is designed to be articulating rather than fixed, allowing it to rotate between a loaded position (supporting the bicycle wheel) and an unloaded position (clear of the ground). This dynamic component enables easy loading of heavy e-bikes by rolling them onto the rack without requiring lifting, while maintaining structural simplicity when not in use.
Solution Approach 2:
The rack is divided into distinct functional components: a fixed wheel support and an articulating wheel support. The articulating support can be independently positioned, allowing the loading mechanism to be activated only when needed. This segmentation provides the loading assistance feature without making the entire rack structure complex.
2Reliability
If traditional vehicular bicycle racks are used, then the device complexity is low, but the reliability deteriorates due to lack of stability during transport
Solution Approach 1:
The articulating wheel support provides dynamic stability adjustment. During transport, the support rotates to a locked position that secures the bicycle firmly. The ability to adjust the support angle and position allows the rack to adapt to different bicycle types and weights, enhancing reliability without requiring an overly complex multi-component system.
Solution Approach 2:
The crank arm restraint mechanism is integrated with the wheel support structure rather than being a separate component. This merging of functions provides both wheel support and crank restraint capabilities within a unified structure, improving reliability through multiple retention points while avoiding the complexity of entirely separate systems.
3Adaptability or versatility
If traditional vehicular bicycle racks are used, then the structure is simple, but the retention capability deteriorates due to inadequate security for different bicycle types
Solution Approach 1:
The articulating wheel support serves multiple functions: it supports the bicycle wheel during loading, provides stable support during transport, and can be adjusted to accommodate different wheel sizes and bicycle types. The integrated crank arm restraint adds another retention function. This multi-functionality achieves versatile retention capability without requiring entirely separate systems for each function.
Solution Approach 2:
The articulating support can be positioned at different angles and locked into place, allowing the same structure to accommodate various bicycle frame geometries, wheel sizes, and weight distributions. This dynamic adjustability provides universal retention capability across different bicycle types without needing multiple fixed configurations.
4Force
If traditional vehicular bicycle racks are used, then the loading process is simple, but the weight handling capability deteriorates when transporting heavy e-bikes
Solution Approach 1:
The articulating wheel support is designed to rotate downward under its own weight when not supporting a bicycle, creating a gravity-assisted loading ramp effect. When a bicycle is placed on the rack, the support rotates upward to a locked position, using mechanical advantage to support heavy e-bike weights without requiring the user to apply excessive lifting force. This dynamic mechanism dramatically reduces the force needed compared to static racks.
Data Source
AI summary
Bicycle racks configured to be secured to a vehicular hitch of a towing vehicle. A bicycle rack includes a mounting post configured to be secured within a vehicular hitch of a towing vehicle. The bicycle rack includes a stationary wheel support attached to the mounting post, wherein the stationary wheel support is attached to the mounting post such that a longitudinal axis of the stationary wheel support is substantially parallel to a ground plane when the mounting post is secured within the vehicular hitch of the towing vehicle. The bicycle rack includes an articulating wheel support attached to the mounting post, wherein the articulating wheel support comprises a joint enabling the articulating wheel support to rotate about an axis disposed along a longitudinal axis of the mounting post.