Miter Saw Carrying Handle Layout for Ergonomic Transport
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Solution Overview
Problem
Prior art chop saws are unwieldy to carry due to their design, often requiring users to hold the base assembly with both hands or rely on a carrying handle, which can be cumbersome and uncomfortable.
Innovation Solution
The miter saw features a base assembly with contoured handles positioned to align with the user's palm, a carrying handle with a grip portion that can be coplanar with the table's support surface, and a bottom surface plate made of plastic or elastomeric material for comfortable carrying and reduced weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users carry the miter saw by holding the base assembly with both hands or by the carrying handle, then the saw can be transported, but it becomes unwieldy and cumbersome
Solution Approach 1:
The base assembly is segmented into multiple carrying handles positioned at different locations (front, rear, and sides) rather than relying on a single carrying mechanism. This allows users to distribute their grip points and choose the most comfortable carrying configuration for the task at hand.
Solution Approach 2:
A contoured grip portion is introduced as an intermediary element between the user's hand and the base assembly. This grip portion is specifically shaped to fit the palm and fingers, providing a comfortable interface that reduces hand fatigue and improves carrying ease.
2Ease of operation
If a carrying handle is provided for transporting the saw, then mobility is enabled, but it can be cumbersome and uncomfortable
Solution Approach 1:
The carrying handles are designed with different local qualities - some are contoured to fit the palm, others are positioned for finger placement. Each handle region is optimized for its specific carrying function, providing comfort and ergonomics without requiring a completely complex handle structure.
Solution Approach 2:
The grip portion of the carrying handles features curved and contoured surfaces that follow the natural shape of the human hand. This curvature allows the handle to conform to the user's grip, distributing pressure evenly and reducing discomfort during transportation.
3Ease of operation
If the grip portion of the carrying handle is disposed within a region between specific lines, then it aligns with the user's palm for better ergonomics, but it constrains the design flexibility
Solution Approach 1:
The carrying handles are positioned asymmetrically on the base assembly rather than in a symmetric pattern. The front, rear, and side handles are placed at specific locations that optimize ergonomic alignment with the user's hand when carrying the saw in different orientations, accepting design constraints to achieve superior ergonomics.
Data Source
AI summary
A miter saw has a base assembly and a rotatable table disposed on the base assembly. The rotatable table is rotatable about a substantially vertical miter axis and has a substantially horizontal workpiece-supporting plane. A saw assembly is connected to the table and includes a blade. The blade is movable downwardly from a first position where the blade is above the workpiece-supporting plane to a second position where a portion of the blade is below the workpiece-supporting plane. The base assembly has a top surface and a first handle disposed on the top surface, with a first hole on the top surface extending through the base assembly, the first hole being configured to allow a user to extend the user's hand therethrough and grip the first handle.