Internal Bicycle Battery Assembly with Two-Stage Locking Mechanism
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Solution Overview
Problem
Traditional e-bikes with externally mounted batteries suffer from instability due to a higher center of gravity and limited space for gear and tools, as the battery mount occupies valuable space on the frame.
Innovation Solution
An internal bicycle battery assembly is integrated into the bicycle frame, featuring a two-stage locking mechanism to secure the battery and allow for easy removal, thereby enhancing stability and space utilization by relocating the battery within the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is externally mounted on the bicycle frame, then the battery is easily accessible for charging and replacement, but the center of gravity is raised causing instability and valuable frame space is occupied
Solution Approach 1:
The battery assembly is nested within a cavity in the bicycle frame, with the battery holder positioned inside the frame structure. This nesting approach allows the battery to be integrated into the frame's internal space rather than mounted externally, lowering the center of gravity while maintaining accessibility through the opening in the frame.
2Ease of operation
If the battery is externally mounted on the bicycle frame, then the battery is easily accessible for charging and replacement, but valuable frame space is occupied limiting gear and tool storage
Solution Approach 1:
The battery holder and battery assembly are nested within the frame's cavity, utilizing internal frame space rather than occupying external frame surfaces. This allows the frame's external surfaces and internal cavity space to be used for gear and tool storage, maximizing space utilization while maintaining battery accessibility through the frame opening.
3Reliability
If a locking mechanism is used to secure the battery within the frame, then the battery is securely retained, but the device complexity increases
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: a lock plunger with spring for automatic engagement, and a separate handle plunger with latches for manual release. This segmentation allows each component to perform its specific function independently, achieving reliable battery retention while keeping the overall mechanism relatively simple and maintainable.
Data Source
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AI summary
A bicycle (10) battery system includes a battery assembly (705) and a battery lock (700). The battery assembly (705) includes a battery and a handle assembly mounted to the battery . The handle assembly includes a handle mount (735), a handle plunger , and a handle . The battery lock (700) is mounted within a cavity of a frame (13) of a bicycle (10) and configured to secure the battery assembly (705) within the cavity. The battery lock (700) includes a lock plunger (730), a movable latch (720), and a stationary latch (725). The lock plunger (730) is configured to press a portion of the handle mount (735) against the movable latch (720) when the battery lock (700) is in a locked position such that the battery assembly (705) is securely mounted within the cavity. Responsive to the battery lock (700) being in an unlocked position, the handle plunger is configured to cause the handle mount (735) and the handle to pivot away from a face of the battery such that at least the portion of the handle mount (735) engages the stationary latch (725) of the battery lock (700).