E-Bike Down Tube Battery Box Integration Mechanism
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Solution Overview
Problem
The existing vertical rotation method for installing and removing batteries in electric bicycles requires significant clearance space in the down tube, increasing production complexity and diminishing the aesthetic appearance of the bicycle.
Innovation Solution
A structure integrating the down tube with a battery box, featuring a hollow tubular design with fixed bases and a protruding rib, allowing the battery box to rotate parallel to the tube body for placement and removal, and a locking mechanism for secure installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vertical rotation method is used for battery installation, then the battery can be removed for charging, but the down tube requires larger clearance space and more complex structure
Solution Approach 1:
Instead of rotating the battery vertically within the down tube, the patent inverts the approach by having the battery box rotate horizontally within the receiving cavity. The rotation direction changes from vertical (along the tube axis) to horizontal (perpendicular to the tube axis), fundamentally changing the spatial requirements and structural complexity.
Solution Approach 2:
The patent transitions the rotation operation from one dimension (vertical rotation along the tube axis) to another dimension (horizontal rotation within the receiving cavity). This dimensional change allows the battery to be installed and removed without requiring the down tube to have large clearance space, as the rotation now occurs in a different spatial plane.
2Ease of operation
If the vertical rotation method is used for battery installation, then the battery can be placed in the down tube, but the down tube size increases
Solution Approach 1:
The patent inverts the installation approach by changing from vertical rotation within the down tube to horizontal rotation within the receiving cavity. This inversion allows the battery box to be installed without increasing the down tube dimensions, as the rotation occurs in a different spatial orientation.
Solution Approach 2:
The battery box is nested within the receiving cavity of the down tube, with the receiving cavity serving as a containment space. This nesting arrangement allows the battery to be installed and rotated within the cavity without requiring the down tube itself to be larger, as the cavity utilizes the existing internal space efficiently.
3Ease of operation
If the vertical rotation method is used for battery installation, then the battery can be removed for charging, but the aesthetic appearance of the bicycle is diminished
Solution Approach 1:
By changing the rotation dimension from vertical to horizontal, the patent allows for a more streamlined down tube design. The horizontal rotation within the receiving cavity enables the down tube to maintain a cleaner, more aesthetic appearance without the structural compromises required by vertical rotation methods.
Data Source
AI summary
A structure for integrating a down tube of an electric bicycle with a battery box is provided. The down tube has a tube body and two fixed bases arranged in the inner cavity of the tube body. A receiving cavity is bounded by the two fixed bases and the tube body. The receiving cavity is provided with an access opening on the outer side surface of the tube body. A long side of the access opening extends inward to form an elongated protruding rib. A positioning column is provided on each of two opposite sides of the two fixed bases. The battery box has a box body and two bearing bases that are installed on the outer sides of the two ends of the box body, respectively. A first dimple is provided on the outer side of the box body in a concave manner.