Electric Motorcycle Frame Layout for Detachable Power Unit Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The power unit in straddled electric vehicles is disposed lower than the right and left front frame units, making it difficult for them to provide firm support, and rearranging the power unit above the down frame leads to reduced rigidity and attachment/detachment challenges.
Innovation Solution
The power unit is positioned above the down frame with a connecting member that overlaps it, providing reinforcement to the main and down frames, and is detachable to facilitate easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power unit is disposed lower than the front frame units, then the front frame units can support the power unit, but the support is not firm enough
Solution Approach 1:
The front frame units are divided into right and left separate units, each capable of independently supporting the power unit. This segmentation allows the power unit to be firmly supported while maintaining accessibility for attachment and detachment operations.
Solution Approach 2:
A connecting member is introduced as an intermediary component between the main frame and down frame. This connecting member overlaps the power unit in side view and provides additional reinforcement, enabling firm support while the detachable nature of the connecting member facilitates easy attachment and detachment of the power unit.
2Reliability
If the power unit is disposed above the down frame, then firm support is achieved, but rigidity of the main frame and down frame decreases
Solution Approach 1:
The connecting member merges the main frame and down frame into a more rigid integrated structure. By overlapping the power unit in side view, the connecting member reinforces both the main frame and down frame simultaneously, maintaining frame rigidity while supporting the power unit above the down frame.
Solution Approach 2:
The connecting member is positioned to overlap the power unit in the side view dimension, creating a three-dimensional reinforcement structure. This spatial arrangement allows the connecting member to reinforce the main frame and down frame without interfering with the vertical positioning of the power unit, thus maintaining both rigidity and support firmness.
3Strength
If the connecting member overlaps the power unit in side view, then frame rigidity is reinforced, but attachment and detachment of the power unit becomes difficult
Solution Approach 1:
The connecting member is designed to be detachable, transforming the static overlapping structure into a dynamic configuration. When attached, the connecting member overlaps the power unit to provide reinforcement; when detached, the power unit can be easily attached or removed without interference, thus maintaining rigidity during operation while facilitating ease of maintenance.
4Ease of operation
If the connecting member is detachable, then attachment and detachment ease is improved, but structural reinforcement may be compromised
Solution Approach 1:
The connecting member is pre-configured with attachment and detachment capabilities, allowing it to be quickly connected to provide structural reinforcement before operation and easily detached when maintenance is needed. This preliminary design ensures that the reinforcement function is readily available without compromising the ease of operation.
Data Source
AI summary
A straddled electric vehicle, including: a main frame extending in a longitudinal direction of the straddled electric vehicle; a down frame disposed below the main frame; a power unit disposed below the main frame and above the down frame; and a first connecting member connected to the main frame and the down frame. The first connecting member overlaps the power unit in a side view of the straddled electric vehicle, and the first connecting member is detachable from the main frame and the down frame.