Sanding Tool Transverse Motor Layout for Compact Design
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Solution Overview
Problem
Handheld sanding tools face challenges in achieving a compact structure while maintaining high power and functionality due to the large volume of the drive motor, which affects their miniaturization and user convenience.
Innovation Solution
The sanding tool design includes a motor and battery pack positioned transversely on either side of the output shaft, forming an included angle with the base plate, and a staggered motor and output shaft configuration to reduce height and improve compactness, along with a dual cooling air path and dust collection system for efficient heat dissipation and dust management.
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 of the drive motor increases, leading to greater overall volume
Solution Approach 1:
The patent changes the traditional arrangement by positioning the motor and battery pack in a transverse configuration relative to the output shaft, utilizing three-dimensional space more effectively. The motor shaft and output shaft are arranged at an included angle and not in the same plane, allowing power transmission through a transmission mechanism while reducing the overall height and volume of the tool body.
Solution Approach 2:
The transmission mechanism is disposed between the motor shaft and the output shaft, with the motor and battery pack nested on two sides of the output shaft. This nested arrangement allows multiple components to occupy overlapping or adjacent spatial regions, maximizing space utilization and reducing the external dimensions of the sanding tool.
2Volume of moving object
If the drive motor volume is reduced for miniaturization, then the overall compactness is improved, but the sanding power may be compromised
Solution Approach 1:
The patent employs a transmission mechanism that changes the rotational parameters between the motor shaft and output shaft. By using gears or other transmission elements, the system can achieve high torque at the output shaft even with a smaller motor, effectively decoupling motor size from output power capability.
3Length of moving object
If the motor and battery pack are positioned transversely, then the height is reduced and compactness is improved, but the structural complexity increases
Solution Approach 1:
The tool body is divided into distinct functional regions with the motor, battery pack, and transmission mechanism arranged in separate but coordinated segments. The casing includes a left casing and a right casing that are divided relative to a center plane, with the motor and battery pack positioned on opposite sides, simplifying assembly and maintenance while achieving compact dimensions.
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 overall height of the sanding tool, enhances its compactness, and improves user experience by balancing weight and reducing vibration, while maintaining high energy efficiency and effective dust collection.
Implementation Method 1
the first cooling air path and the second cooling air path intersect at the cooling fan blades
Implementation Method 2
the motor has a motor shaft rotating around a first axis, the output shaft rotates around a second axis, and the output shaft transmits power to the base plate assembly
Data Source
AI summary
A sanding tool includes a machine body, a power supply, a base plate assembly, a drive mechanism, and a control mechanism. The machine body includes a casing. The base plate assembly includes a base plate. The drive mechanism is disposed in the casing and includes a motor and an output shaft, the motor has a motor shaft rotating around a first axis, the output shaft rotates around a second axis, and the output shaft transmits power to the base plate assembly. The control mechanism is electrically connected to the motor and configured to control the sanding tool to operate. The first axis and the second axis form an included angle and are not in the same plane. A battery pack and the motor are disposed on two sides of the output shaft.