Bicycle Frame Lateral Opening for Battery Insertion
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Solution Overview
Problem
Conventional bicycle frames with battery containers are bulky, reducing space for other equipment and impairing cycling comfort, and securing batteries is challenging due to weight and shock resistance issues, especially with limited accessibility and retention forces.
Innovation Solution
A bicycle frame with a lateral opening in the tube section allows for easy insertion and removal of battery units transversally, featuring a swinging mechanism and tensioning device to ensure stable and secure battery fixation, using a hinge, electric contact, and a closure lid for direction guidance and force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery container is provided on the bicycle frame, then the battery can be secured, but the free space for additional equipment is reduced and cycling comfort is impaired
Solution Approach 1:
The battery unit is integrated directly into the frame tube's interior space, nesting the battery within the existing frame structure rather than adding a separate external container. This eliminates the need for additional battery container volume while maintaining secure retention through the tensioning device and lateral opening design.
2Reliability
If a battery container is provided on the bicycle frame, then the battery can be secured, but the battery container becomes bulky
Solution Approach 1:
The battery retention function is extracted from a separate bulky container and integrated directly into the frame tube structure. The tensioning device and lateral opening mechanism are embedded within the frame tube, eliminating the need for an external battery container and its associated bulk.
3Ease of operation
If a frontal opening is used for battery access, then the battery compartment is accessible, but the retaining force is limited and manual insertion is required
Solution Approach 1:
Instead of accessing the battery from the front through a limited opening, the design inverts the access direction by providing a lateral opening in the frame tube. This allows the battery to be inserted from the side, enabling the application of substantial retaining forces through the tensioning device while maintaining ease of access.
4Reliability
If the battery is secured with high retaining force, then the battery is securely retained, but the insertion becomes difficult against the retaining force
Solution Approach 1:
The tensioning device is designed to be dynamically adjustable, allowing the retaining force to be modified during operation. During insertion, the device can be configured to provide minimal resistance, and once the battery is in place, the tensioning device engages to provide high retaining force for secure operation.
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
Enables comfortable and secure battery insertion and removal, providing high stability and ease of use while maintaining cycling comfort by allowing precise positioning and secure retention with significant tension forces.
Implementation Method 1
the tension force may e.g. be created by the arrangement of at least one spring that is preferably pretensioned during the operation of inserting the battery unit already
Data Source
AI summary
The invention relates to a bicycle frame comprising a tube section having an interior space for receiving at least one battery unit that is suitable as a source of energy for an electromotive bicycle drive, as well as to a battery unit insertable therein.To provide an easy operation and at the same time a highly stabilized placement of the battery, it is suggested that said tube section is provided with a lateral opening substantially extending in the direction of extension of said tube section, wherein said battery unit is insertable into said interior space through said lateral opening.