Cordless Belt Sander Battery Layout for Compact Sanding Control
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Solution Overview
Problem
Belt sanders powered by batteries can become large in size due to the positioning of the battery mounting part, affecting maneuverability and operational efficiency.
Innovation Solution
The battery mounting part is positioned to overlap with the polishing surface and motor, allowing the masses of the motor and battery to be utilized for improved operational efficiency, with the battery being slid in a horizontal direction for easy mounting and the handle design enabling compactness and stable operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery mounting part is positioned to optimize power source placement, then the operational efficiency is improved by utilizing the masses of the motor and battery, but the device may become large in size in certain directions, adversely affecting maneuverability
Solution Approach 1:
The battery mounting part is positioned to overlap with the polishing surface when viewed from above and to overlap with the motor when viewed from the front, utilizing spatial overlap in multiple dimensions. This dimensional arrangement allows the battery to be mounted in a position that utilizes the masses of both the motor and battery for improved operational efficiency during polishing operations, while maintaining a compact overall device size by avoiding extension in any single direction.
2Productivity
If the battery mounting part is arranged to overlap with the polishing surface and motor, then the weights of the motor and battery are applied to the polishing surface during driving, but the battery mounting structure becomes more complex
Solution Approach 1:
The battery mounting part integrates multiple functions into a single structure: it provides the mounting interface for the battery, positions the battery to overlap with both the polishing surface and motor, and serves as the interface for sliding insertion and removal. This merging of functions reduces the number of separate components and simplifies the overall mounting structure while achieving the desired weight application effect.
Solution Approach 2:
The battery mounting part is designed to perform multiple functions simultaneously: it acts as a structural support element, a positioning mechanism for the battery, a mounting interface for easy attachment and detachment, and a means to apply the combined weights of the motor and battery to the polishing surface during operation.
3Ease of operation
If the battery mounting part allows sliding insertion in a horizontal direction, then the ease of mounting the battery is improved, but the precision of battery positioning may be reduced
Solution Approach 1:
The battery mounting part includes pre-formed guide surfaces and positioning features that are prepared in advance during manufacturing. These preliminary structural elements guide the battery into the correct position during sliding insertion, ensuring accurate positioning is achieved automatically as the battery is inserted, without requiring additional adjustment steps or complex positioning mechanisms.
Data Source
AI summary
A belt sander has an electric motor, a housing including a motor housing part, belt driving part, first handle and battery mounting part. Where a direction in which a rotational axis of the drive roller and the driven roller extend is a left-right direction, a direction wherein the rollers are arranged in parallel is a front-rear direction, and a direction orthogonal to the left-right and front-rear directions is an up-down direction, the belt driving part is below the motor, and a polishing surface is defined by a lower surface of the sanding belt. The battery mounting part is configured so a battery can be mounted and removed by being slid in a sliding direction. The mounting part overlaps with the polishing surface viewed from above and overlaps with the motor viewed from the front. The sliding direction of the battery is a horizontal direction including the front-rear and left-right directions.