Bicycle Frame Axial Battery Insertion Mechanism
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Solution Overview
Problem
Existing bicycle frames with integrated batteries for auxiliary drives require complex and heavy static reinforcements, leading to expensive and cumbersome designs, as known methods often necessitate thick walls and complex fastening systems for external battery attachment or orthogonal insertion into frame tubes.
Innovation Solution
A bicycle frame design featuring a frame tube with an axially extending battery receiving section and a rail system that allows axial insertion and locking of batteries, reducing the need for thick walls and complex reinforcements by using a guide spring and groove system for secure and quick battery assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If batteries are attached to the outside of frame tubes, then battery securing is achieved, but the bicycle frame becomes complex and heavy due to required fastening systems and covers
Solution Approach 1:
The battery is inserted into the interior space of the frame tube, nesting the battery within the existing frame structure rather than attaching it externally. This eliminates the need for external fastening systems and covers, reducing overall complexity and weight while maintaining secure battery positioning
2Ease of operation
If batteries are inserted orthogonally into frame tubes, then battery installation is simplified, but the frame requires very thick walls and complex static reinforcements
Solution Approach 1:
Instead of inserting the battery orthogonally (perpendicularly) into the frame tube as in conventional designs, the battery is inserted axially (parallel to the tube's main axis) from an end opening. This inversion of the insertion direction eliminates the need for thick walls and complex static reinforcements, reducing frame weight while maintaining installation simplicity
3Weight of stationary object
If axial battery insertion is implemented, then frame construction is simplified and weight is reduced, but secure battery fastening becomes more difficult
Solution Approach 1:
The battery insertion and fastening process is divided into distinct segments: axial insertion through the end opening, positioning within the frame tube interior, and engagement of the locking mechanism. This segmentation allows each function to be optimized independently, achieving both simplified frame construction and secure battery fastening through the axial insertion approach with integrated locking features
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 enables a lightweight and stable bicycle frame with secure battery fastening and assembly, reducing material requirements while maintaining structural integrity and ease of use.
Implementation Method 1
a guide spring which forms a sliding guide for axially sliding the battery into the battery receiving section
Data Source
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AI summary
The present invention relates to a bicycle frame (1) for a bicycle (100) with a battery-powered auxiliary drive (28), comprising at least one frame tube, in particular a down tube (10), which extends between a steering head region (20) and a drive bearing region (24), and which has an axially extending battery receiving section (14) in its interior (12) for receiving a battery (104), in particular for the auxiliary drive, wherein the battery receiving section has an end-facing insertion opening (18) through which the battery can be inserted into the battery receiving section with its end face (102) facing forward. Furthermore, the invention relates to a bicycle and a battery for such a bicycle frame.