Sanding Tool Center of Gravity Balancing
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Solution Overview
Problem
Existing sanding tools face stability issues due to increased volume and weight from more powerful motors, leading to poor sanding effects.
Innovation Solution
The sanding tool design includes a body with a housing, a main handle, a sanding assembly, and an electric motor, where the battery pack is strategically mounted to ensure the center of gravity remains within the support plane of the base plate, maintaining stability and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power of the sanding tool is increased, then the sanding capability is improved, but the volume and weight of the motor increase, causing the overall volume and weight of the sanding tool to increase
Solution Approach 1:
The patent redistributes components along the longitudinal axis of the tool, placing the motor in the rear housing and the battery pack in the front, creating a balanced longitudinal arrangement that optimizes both power delivery and center of gravity positioning without increasing overall tool volume
2Power
If the power of the sanding tool is increased, then the sanding capability is improved, but the weight of the motor increases, causing the overall weight of the sanding tool to increase
Solution Approach 1:
The patent strategically positions the battery pack in the front portion of the housing to act as a counterweight to the motor located in the rear, balancing the center of gravity within the support plane and offsetting the weight increase from the high-power motor
3Power
If the volume and weight of the sanding tool are increased, then the motor power is improved, but the stability of the sanding tool during use deteriorates
Solution Approach 1:
The battery pack is positioned as a counterweight in the front portion of the housing to balance the motor weight in the rear, ensuring the center of gravity projects within the support plane and maintaining stability during operation
Solution Approach 2:
The patent optimizes the longitudinal distribution of mass along the tool axis, creating a balanced center of gravity position that ensures stability while accommodating high-power components
4Power
If the volume of the sanding tool is increased, then the motor power is improved, but the ease of operation deteriorates
Solution Approach 1:
The battery pack serves as a counterweight positioned in the front portion, balancing the tool's center of gravity to improve handling and ease of operation despite the presence of a high-power motor
Data Source
AI summary
A sanding tool includes a body and a battery pack. The body includes a housing formed with a battery pack coupling portion, a main handle connected to the housing, a sanding assembly connected to the housing with a base plate, where the base plate forms a support plane; and an electric motor in the housing. The mounting surface of the battery pack is at least partially disposed between the electric motor and the main handle. The projection point of the center of gravity of the whole machine on an extended surface of the support plane is located within the support plane of the base plate. Along the front and rear direction of the housing, the base plate has a first centerline, and the distance from the projection point to the first centerline is greater than or equal to 0 mm and less than or equal to 38 mm.