Bicycle Load Carrier Pivoting Safety Bracket for Heavy-Load Retention
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Solution Overview
Problem
Existing bicycle load carriers, particularly those with spring-loaded safety bars, struggle to securely hold heavy or bulky loads, such as children, due to the spring force being overcome by the inertia of the load, leading to potential instability.
Innovation Solution
A bicycle load carrier with a pivoting safety bar that can be positively locked in multiple positions, using locking elements to ensure the bar remains secured, even under heavy loads, and can be adjusted to minimize interference during loading and unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring-loaded safety bar is used to hold the load, then the load can be secured on the loading platform, but the spring force can be overcome by the inertia of heavy loads, leading to potential instability
Solution Approach 1:
The safety bar is designed to be pivotable about a transverse axis, allowing it to dynamically adjust its position. It can pivot between a loading position (where it clears the loading platform for easy loading/unloading) and a locking position (where it engages with locking elements to securely hold the load). This dynamic positioning resolves the contradiction by providing both accessibility during loading and secure retention during transport.
Solution Approach 2:
Locking elements are introduced as intermediary components between the safety bar and the loading platform. These locking elements engage with the pivotable safety bar at specific positions to provide form-fit locking, preventing the safety bar from being displaced by heavy loads. The locking elements act as mediators that transfer and secure the load-holding function without relying solely on spring force.
2Ease of operation
If the safety bar is pivotable to allow easy loading and unloading, then accessibility is improved, but the load may not be securely held during transport
Solution Approach 1:
The safety bar's pivotability allows it to be dynamically positioned: in a first position (loading position) it clears the loading platform for easy access, and in a second position (locking position) it engages with locking elements to secure the load. This dynamic design simultaneously achieves both ease of operation and reliable load retention.
Solution Approach 2:
The safety bar system is segmented into distinct functional positions: a loading position for accessibility and a locking position for secure retention. The locking elements are also segmented, with multiple locking positions corresponding to different safety bar orientations. This segmentation allows the system to optimize for either loading ease or load security depending on the operational phase.
3Reliability
If the safety bar is locked in a fixed position, then load security is improved, but the ability to adapt to different load types and loading processes is reduced
Solution Approach 1:
The safety bar maintains form-fit locking capability while remaining pivotable about the transverse axis. The locking elements can engage at multiple positions along the pivot arc, allowing the system to be locked securely in different orientations depending on the load type and loading process requirements. This dynamic locking capability provides both security and adaptability.
Solution Approach 2:
The safety bar system is designed with universal adaptability: the pivotable safety bar can assume multiple positions, and the locking elements can engage at corresponding multiple locking positions. This multi-functional design allows the same mechanism to securely handle different load types (including heavy loads like children) and accommodate various loading processes, achieving both reliability and versatility.
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
The solution provides reliable and versatile load securing, suitable for heavy loads like children, while allowing easy access by preventing unintentional release, enhancing safety and usability.
Implementation Method 1
a pivoting, essentially U-shaped safety bar that rests on the loading platform of the front or rear luggage carrier under spring load
Data Source
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AI summary
The invention relates to a bicycle load carrier (1) with a loading platform (2) designed to accommodate cargo and with a safety bar (5). The bicycle load carrier (1) is pivotally mounted, wherein the safety bar (5) can be selectively locked in a form-fitting manner or released from the form-fitting manner in at least one pivoting position.