Battery Holder Movable Member Biasing Mechanism
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Solution Overview
Problem
Manufacturing tolerance issues between battery units and holders can lead to gaps, hindering proper retention and electrical connectivity in battery holders for human-powered vehicles.
Innovation Solution
A battery holder design incorporating a movable member with a biasing mechanism that ensures contact between the battery unit and the holder, using elastic members like rubber to accommodate manufacturing tolerances and maintain secure attachment without mechanical fasteners, while allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed battery holder structure is used, then the structure is simple and easy to manufacture, but gaps form between the battery unit and holder due to manufacturing tolerance, hindering proper retention
Solution Approach 1:
The battery holder employs a movable member that can shift position to accommodate manufacturing tolerance variations. The movable member includes a movable body that translates along a guide rail, allowing the holder to dynamically adjust its position to maintain contact with the battery unit despite dimensional variations, thereby ensuring reliable retention without requiring complex adjustment mechanisms
Solution Approach 2:
The holder structure changes its geometric parameters dynamically through the movable member's displacement. The position of the movable member is adjusted based on the actual dimensions of the battery unit, allowing the holder to adapt its configuration to eliminate gaps formed by manufacturing tolerances, thus improving retention reliability while maintaining structural simplicity
2Reliability
If a movable member with biasing mechanism is added to eliminate gaps, then retention reliability improves, but device complexity increases
Solution Approach 1:
The biasing member automatically applies contact force between the movable member and the battery unit without requiring external control systems. The elastic biasing member generates restoring force that pushes the movable member toward the battery unit, ensuring reliable contact and eliminating gaps caused by manufacturing tolerances through self-actuating mechanical action
Solution Approach 2:
The biasing member acts as an intermediary element between the movable member and the fixed structure. It transmits mechanical force to maintain contact pressure, mediating the interaction between the holder and battery unit to ensure reliable electrical connectivity and physical retention while isolating the complex force generation mechanism from the main structural components
3Reliability
If manufacturing precision is increased to eliminate gaps, then retention reliability improves, but manufacturing cost and complexity increase
Solution Approach 1:
Instead of relying on high manufacturing precision to eliminate gaps, the invention uses a dynamic adjustment mechanism where the movable member can translate to compensate for dimensional variations. This approach allows standard manufacturing tolerances to be maintained while achieving reliable contact through post-manufacturing positional adjustment
Solution Approach 2:
The invention changes the position parameter of the movable member based on actual battery unit dimensions rather than relying on tight dimensional control during manufacturing. This allows the system to adapt to manufacturing variations by adjusting the holder's position, eliminating the need for high-precision manufacturing while maintaining reliable retention
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 reduces gaps between the battery unit and holder, ensuring stable and secure retention, easy attachment, and reduced noise, while maintaining electrical connectivity.
Implementation Method 1
a first elastic member that biases the movable member toward the battery unit
Data Source
AI summary
A battery holder is configured to appropriately hold a battery unit. The battery holder includes a first holding portion that supports a first end of a battery unit while in an installed state where the battery unit is held by the battery holder. The first holding portion includes a movable member and a first biasing member. The movable member includes a first support surface that contacts the first end of the battery unit while in the installed state. The movable member is movable relative to a frame of a human-powered vehicle while in a mounted state where the battery holder is mounted to the frame of the human-powered vehicle. The first biasing member biases the movable member toward the battery unit.