Monolithic Guard Pipes with Elastic Mounting
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Solution Overview
Problem
Existing two-wheeled motor vehicle designs require a crossing pipe in addition to left and right guard pipes, increasing the number of parts and potentially altering vehicle body rigidity based on the presence or absence of the guard pipes.
Innovation Solution
The design features monolithic connection of left and right guard pipes with brackets formed of iron material, supported by vehicle body frames with elastic members, allowing the guard pipes to be displaced in the vehicle width direction, reducing the number of parts and maintaining rigidity. The guard pipes are positioned vertically and front-rearly, with brackets and support plates facilitating movement and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a crossing pipe is added to connect left and right guard pipes, then the guard pipes can be structurally connected, but the number of parts increases
Solution Approach 1:
The patent merges the left and right guard pipes into a single monolithic structure, eliminating the need for a separate crossing pipe to connect them. This integration reduces the total number of parts while maintaining the structural connection function.
2Reliability
If guard pipes are fixed rigidly to the vehicle body frame, then the guard pipes are securely positioned, but the vehicle body rigidity changes depending on whether the guard pipes are present
Solution Approach 1:
The patent employs a dynamic mounting system where the guard pipes are connected to the vehicle body frame through elastic members (such as rubber bushes) that allow controlled movement. This dynamic connection enables the guard pipes to be securely positioned during normal operation while accommodating rigidity changes when the guard pipes are installed or removed.
3Weight of moving object
If guard pipes are made of aluminum alloy to reduce weight, then the weight impact is minimized, but the strength and rigidity of the guard pipes may be reduced
Solution Approach 1:
The patent utilizes aluminum alloy materials with optimized mechanical properties and appropriate elastic modulus to achieve the desired balance between weight reduction and strength maintenance. By carefully selecting material parameters and designing the guard pipe geometry, the system achieves lightweight construction while maintaining adequate strength and rigidity.
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
This configuration reduces the number of parts, maintains vehicle body rigidity, and provides protection to the front cowl while minimizing weight impact and enhancing assemblability, ensuring the guard pipes are securely positioned without altering the vehicle's lateral rigidity.
Implementation Method 1
The connecting portion is supported, with the intermediary of an elastic member, by a front cowl stay that is fixed to the vehicle body frame
Data Source
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AI summary
A two-wheeled motor vehicle comprising a mounting structure of left and right guard pipes (36) wherein the mounting structure comprising a pair of left and right brackets (41) each having a mounting part (43), a guard pipe support part (44) and a support plate part (42) formed in a flat plate shape along a plane perpendicular to a vehicle width direction and linking the mounting part (43) and the guard pipe support part (44), the pair of left and right brackets (41) are separate members from the left and right guard pipes (36), the mounting parts (43) of the pair of left and right brackets (41) are fixed to both left and right sides of a vehicle body frame (F) and the left and right guard pipes (36) monolithically connected are fixed to the guard pipe support parts (44) of the pair of left and right brackets (41).