Bicycle Cargo Pack Mounting With Anti-Rotation Wheel Clearance
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Solution Overview
Problem
Existing cargo packs for bicycles, particularly those mounted on handlebars, face challenges in maintaining stability and avoiding abrasion and noise when contents vary in volume, while also needing to be centralized to avoid interference with controls and the front wheel.
Innovation Solution
A cargo pack carrier system with an arm and adjustable mounting structure, featuring a cylindrical journal, latches, and an anti-rotation element to secure the pack in place and prevent rotation, ensuring it remains clear of the wheel and controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cargo pack is mounted on the bicycle handlebars to be easily accessible, then the rider can quickly access contents, but the pack may come into contact with the front wheel causing abrasion and buzzing noise
Solution Approach 1:
The mounting system is divided into separate components: an arm attached to the handlebars, a mounting structure with journals, and a carrier structure with attachment elements. This segmentation allows independent optimization of each component's position and function, enabling the pack to be mounted high and central while maintaining accessibility.
Solution Approach 2:
The invention transitions from a simple handlebar mount to a three-dimensional mounting system using arms extending from the handlebars, journals providing vertical positioning, and anti-rotation elements preventing unwanted movement. This multi-dimensional approach elevates the pack above the wheel contact zone while maintaining central accessibility.
2Stability of the object's composition
If the cargo pack is centralized on the handlebars to avoid imbalance, then the bicycle maintains better balance, but the pack may interfere with control elements such as brake levers and gear change controls
Solution Approach 1:
The mounting structure provides localized adjustment capabilities at specific points: the arm positioning determines horizontal centralization for balance, while the journal positioning controls vertical clearance from control elements. This local quality control allows simultaneous optimization of both balance and control element clearance.
Solution Approach 2:
The mounting system incorporates adjustable elements that can be repositioned to accommodate different pack sizes and rider preferences. The anti-rotation element dynamically prevents unwanted movement while allowing intentional adjustment, enabling the system to adapt to varying conditions while maintaining balance and avoiding interference.
3Adaptability or versatility
If the cargo pack allows varying volume contents to be stored, then the pack is more versatile for different touring needs, but the pack position becomes difficult to control and may shift during riding
Solution Approach 1:
The carrier structure includes pre-positioned attachment elements and anti-rotation abutments that are prepared in advance. When the pack is mounted, these pre-positioned elements automatically engage to secure the pack in the correct position, preventing shift regardless of contents volume. The preliminary positioning features ensure stability is established before any contents are added or removed.
Solution Approach 2:
The mounting structure acts as an intermediary between the handlebars and the cargo pack, providing a stable interface that decouples the pack's contents volume from its mounting position. The journals and anti-rotation elements serve as intermediary mechanisms that maintain consistent positioning while accommodating variable pack sizes and contents.
4Device complexity
If a simple mounting mechanism is used to attach the cargo pack, then the device complexity is reduced, but the pack may rotate or become loose during bicycle operation
Solution Approach 1:
The mounting mechanism merges multiple functions into a unified structure: the journals provide both rotational support and positioning, while the anti-rotation element combines with the latch mechanism to provide both rotation prevention and secure attachment. This merging of functions maintains relative simplicity while ensuring reliable, rotation-free mounting during bicycle operation.
Data Source
AI summary
A cargo pack carrier comprises an arm 18 for attachment at one end to a handlebar 12 of a bicycle, a mounting structure 20 which is adjustably fitted to the other end of the arm, and a carrier structure 22 for attachment to the cargo pack 14. The mounting structure comprises a mounting member 30 for receiving an attachment element 44 of the carrier structure 22, and an anti-rotation element 40 which is spaced from the mounting member 30 and is engageable with an anti-rotation abutment 60 of the carrier structure 22 to prevent rotation of the carrier structure 22 about the mounting member 30.