Angled Elastic Mount for Lawn Mower Vibration Isolation
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Solution Overview
Problem
Existing isolation mount systems for riding mowers and lawn tractors are ineffective in reducing the transmission of vibrations from the engine to the device frame, leading to operator discomfort and potential damage.
Innovation Solution
A prime mover mount system utilizing angled elastic members and brackets, which compress the elastic elements to absorb torque and vibrational forces, thereby reducing the transmission of vibrations to the device frame. The system includes a prime mover mount member, elastic members, and brackets positioned at specific compound angles to effectively dampen vibrations in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing isolation mount systems are used, then the structure is simple, but the vibration transmission reduction is ineffective
Solution Approach 1:
The patent applies this principle by orienting the elastic members at specific compound angles (α and β angles) rather than simple vertical or horizontal orientations. This angular configuration allows the mount system to address vibration forces from multiple directions simultaneously, transforming a single-dimension isolation approach into a multi-dimensional solution that effectively reduces vibration transmission while maintaining reasonable structural complexity
Solution Approach 2:
The patent employs composite material principles by combining elastic members with brackets and mount structures to create a hybrid isolation system. The elastic members (which may be made of rubber, foam, or other viscoelastic materials) are integrated with rigid bracket components, forming a composite mount assembly that leverages the damping properties of elastic materials alongside the structural support of rigid components to achieve effective vibration reduction
2Object-affected harmful factors
If elastic members are used to absorb vibrations, then vibration transmission is reduced, but the device complexity increases
Solution Approach 1:
The patent applies this principle by designing elastic members that simultaneously perform multiple functions: they absorb torque forces, dampen vibrations, and provide mechanical coupling between the prime mover and mount structure. This multi-functionality reduces the need for separate components for each function, thereby limiting the increase in device complexity while achieving effective torque force transmission reduction
Solution Approach 2:
The elastic members serve as intermediary elements between the rigid bracket structures, providing a compliant interface that mediates the transmission of forces. This intermediary approach allows the system to reduce torque force transmission and vibration while maintaining structural integrity, balancing the trade-off between component complexity and vibration isolation effectiveness
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 significantly reduces the transmission of vibrations to the device frame, enhancing operator comfort and reducing the risk of damage by effectively absorbing torque and vibrational forces through the use of angled elastic members and brackets.
Implementation Method 1
a first elastic member, a second elastic member... placing the first elastic member into compression... placing the second elastic member into compression... absorb torque and vibrational forces
Implementation Method 2
reduces the transmission of vibrations from the engine to the device frame... effectively dampen vibrations in multiple directions
Data Source
AI summary
An engine mount system for a lawn mower having a front, rear, and two sides. The engine mount system includes a mounting plate, an engine, first and second elastic members, and first and second brackets. The engine is mounted to the mounting plate and applies a torque force to the mounting plate during lawn mower operation. The first bracket is provided on the mounting plate and includes a first surface. The first surface is adjacent the first elastic member and partially faces the front, thereby placing the first elastic member into compression when the engine applies the torque force to the mounting plate. The second bracket is provided on the mounting plate and includes a second surface. The second surface is adjacent the second elastic member and partially faces the rear, thereby placing the second elastic member into compression at the same time as the first elastic member.


