Compact Hand-Held Band Saw With Modular Guard
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Solution Overview
Problem
Existing band saws are often large and heavy, making them difficult to operate in various cutting applications, and their housings are prone to damage, requiring disassembly for replacement, which is inconvenient and time-consuming.
Innovation Solution
A compact hand-held band saw design with a modular structure that allows the guard to be replaced without disassembling the main components, featuring a reduced spacing between guide rollers and wheels, and a rechargeable battery for improved portability and power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the band saw is designed with a compact structure, then the size and weight are reduced for easier operation, but the cutting capacity may be compromised
Solution Approach 1:
The band saw is divided into modular components including a power tool housing, a guard assembly, and a blade assembly. The guard can be detached and replaced independently without disassembling main components, allowing compact design while maintaining functionality through modular segmentation.
2Strength
If the housing is made durable to protect against bumps and scratches, then protection is improved, but the housing becomes harder to replace when damaged
Solution Approach 1:
The guard is designed as a separate modular component that can be independently removed and replaced. The guard includes a mounting plate with mounting holes that allow detachment from the power tool housing, enabling easy replacement of damaged guards without disassembling the entire tool.
Solution Approach 2:
The guard is designed as a replaceable component that can be discarded when damaged and replaced with a new or refurbished guard. The modular design allows the guard to be recovered and reused independently from the main housing, reducing repair time and complexity.
3Volume of moving object
If the spacing between guide rollers and wheels is reduced, then the overall size is minimized for portability, but the blade stability may be affected
Solution Approach 1:
The guide rollers are designed to be adjustable in position along the housing, allowing dynamic optimization of the spacing between guide rollers and wheels. This enables minimization of overall size while maintaining adequate blade stability through adjustable configuration.
Data Source
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AI summary
A hand-held power tool (10) comprising: a housing including a cavity (66), a first wheel (70) supported by the housing (14) for rotation, the first wheel (70) located on a first side of the cavity (66), a second wheel (74) supported by the housing for rotation, the second wheel (74) located on a second side of the cavity (66) opposite the first side, wherein the first and second wheels (70, 74) are configured to support a continuous saw blade (26), and a motor (18) positioned in the housing (14) and operably coupled to the first wheel (70). The housing (14) includes a deck (138) supporting the motor (18), the deck (138) having an outer perimeter, and a guard (142) removably coupled to the deck (138), wherein the guard (142) includes a first portion disposed between the first wheel (70) and the deck (138), a second portion (164) extending from the first portion transverse to the first portion and disposed adjacent the outer perimeter of the deck (138), and a third portion (170) extending from the first portion transverse to the first portion and disposed adjacent at least one of the first wheel (70) and the second wheel (74).