Grinding Tool Vibration Damping via Elastic Screw Boss Integration
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Solution Overview
Problem
Existing grinding tools face challenges in reducing vibration while maintaining a compact product size, as external vibration dampers can increase the radial size of screw fastening portions.
Innovation Solution
Incorporating elastic members, such as rubber rings and sheets, between the motor housing and housing halves, which are screwed together, to absorb vibrations without enlarging the screw fastening portions radially.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an external vibration damper is attached to the screw boss, then vibration reduction is achieved, but the radial size of the screw fastening portion increases
Solution Approach 1:
The vibration damper is merged with the screw boss structure by forming the damper body directly as an integral part of the screw boss, eliminating the need for separate external attachment. This integration allows the vibration reduction function to be incorporated without increasing the radial footprint of the fastening portion.
Solution Approach 2:
The vibration damper structure is nested within the screw boss geometry, where the damper body is formed inside or as part of the screw boss structure. This nesting approach allows the vibration damping function to be embedded within the existing fastening component without adding external radial dimensions.
2Object-affected harmful factors
If a vibration damper is externally attached, then vibration reduction is achieved, but the product size increases
Solution Approach 1:
By merging the vibration damper with the screw boss structure, the patent eliminates the need for separate external components, thereby reducing the overall product volume while maintaining vibration reduction effectiveness.
Solution Approach 2:
The screw boss structure is given multi-functionality by integrating the vibration damper into it, allowing the same component to serve both fastening and vibration reduction purposes, thereby reducing the total component count and product size.
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 effectively reduces vibration transmission to the grip housing, enhancing user comfort while maintaining a compact tool size by securely sandwiching the elastic members between the housing halves.
Implementation Method 1
an elastic member between the motor housing and each of the screw bosses in an axial direction of the screw bosses
Implementation Method 2
an elastic member between the motor housing and each of the screw bosses
Data Source
AI summary
A grinding tool allows effective reduction of vibration while maintaining the compact product size. A grinding tool includes a motor housing accommodating a motor, a pair of housing halves screwed together across the motor housing and each including a screw boss extending through the motor housing, and an elastic member between the motor housing and each of the screw bosses in an axial direction of the screw bosses.