Bicycle Battery Mount with Resilient Pivot Interface
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Solution Overview
Problem
Existing bicycle frames lack an effective mechanism to securely integrate and position batteries for electric motors, leading to potential rattling and vibration issues during use.
Innovation Solution
A pivot interface is introduced between the battery and the frame, featuring an eccentric boss with a cam profile and a resilient pivot mount, providing an interference fit that secures the battery in place and accommodates slight variations in length, while a through axle and protective cover enhance stability and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid battery mount is used to securely fix the battery, then the battery positioning stability is improved, but the mount cannot accommodate variations in battery length and may cause damage
Solution Approach 1:
The pivot mount is designed with resilient properties that allow it to change its physical state under load. When the battery is inserted, the resilient material deforms to accommodate the interference fit, then maintains a stable secured position. This parameter change enables the mount to adapt to slight variations in battery length while still providing secure fixation.
Solution Approach 2:
The pivot mount utilizes resilient material that combines the properties of structural support with flexibility. This composite approach allows the mount to provide both the stability needed to secure the battery and the adaptability to accommodate manufacturing tolerances and length variations without damage.
2Reliability
If a secure interference fit is created to eliminate rattling, then the battery security is improved, but the assembly complexity increases
Solution Approach 1:
The battery mounting system is divided into distinct functional elements: the pivot mount with resilient material, the eccentric boss with cam profile, and the through axle. This segmentation allows each component to perform its specific function - the resilient mount provides accommodation and security, the cam profile enables positioning, and the through axle completes the fixation - while keeping the overall design manageable.
3Adaptability or versatility
If the pivot mount is made resilient to accommodate interference fit, then the adaptability to battery variations is improved, but the mount strength may be reduced
Solution Approach 1:
The resilient material in the pivot mount acts as a cushioning element that absorbs the stresses of the interference fit before they can damage either the mount or the battery. This beforehand cushioning allows the mount to accommodate the forced fit while protecting the structural integrity of both components.
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 effectively secures the battery, reducing rattling and vibration, and provides structural integrity and protection, enhancing the overall performance and durability of the bicycle frame.
Implementation Method 1
At least one of the pivot mount and the boss is resilient in order to accommodate the interference fit
Data Source
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AI summary
The present invention provides a bicycle comprising a pivot interface between a battery and a frame. The pivot interface includes a pivot mount defining a recess on one of the frame and the battery, and an eccentric boss on the other of the frame and the battery. The boss has a first boss width that is insertable into the recess when the battery is in a first position, and the boss further has a second boss width larger than the first boss width and creating an interference fit with the recess when the battery is in a second position. At least one of the pivot mount and the boss is resilient in order to accommodate the interference fit. Preferably, the pivot mount is on the frame and the boss is on the battery, and also the pivot mount preferably comprises a resilient material.