Electric Bicycle Down Frame Battery Housing
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Solution Overview
Problem
Existing electric bicycles have design issues with battery placement, where the battery protrudes and inefficiently uses space, affecting design aesthetics and rider comfort due to interference with the frame and pedals.
Innovation Solution
The electric bicycle features a battery housing area between the first and second extension parts of the down frame, allowing the battery to be securely attached and detachable, with a support structure that turns the battery into position, reducing the width of the frame and improving designability, while maintaining stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery is disposed behind the down tube, then the battery can be mounted on the electric bicycle, but the battery stands out and is not favorable in design
Solution Approach 1:
The battery is nested within the battery housing area formed by the down frame extension parts. The first and second extension parts create a housing space that contains the battery, making the battery not stand out externally while maintaining easy mounting access.
2Ease of manufacture
If the battery is disposed behind the down tube, then the battery can be mounted on the electric bicycle, but there is room for improvement in a way of using a space where the battery is disposed
Solution Approach 1:
The down frame extends in a diagonally lower rear direction, creating a three-dimensional battery housing area that efficiently utilizes the available space. The battery housing area is formed by side surface portions extending in the extending direction and arranged side by side in the width direction, optimizing space utilization.
3Volume of moving object
If the battery housing area is formed by extension parts, then space utilization is improved, but the frame width may increase
Solution Approach 1:
The first and second extension parts are configured asymmetrically, with the first extension part having a first width and the second extension part having a second width that is different from the first width. This asymmetric configuration allows efficient space utilization while controlling the overall frame width.
Data Source
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AI summary
To effectively use an area housing a battery (9) and to improve designability. An electric bicycle (100) includes a front wheel (2), a rear wheel (3), a driving unit (8) transmitting a driving force to at least one of the front wheel (2) and the rear wheel (3), a battery (9) housing area capable of housing a battery (9) supplying power to the driving unit (8), a head pipe (11) and a down frame (13) extending from the head pipe (11) toward a diagonally lower rear direction of a vehicle body. The down frame (13) includes a first extension part (134) extending toward the diagonally lower rear direction of the vehicle body and a second extension part (135) extending toward the diagonally lower rear direction of the vehicle body and provided side by side with the first extension part (134) in a width direction of the vehicle body. The battery housing area (R) is formed at least between the first extension part (134) and the second extension part (135).