Circular Saw Blade Mount for Tight-Clearance Blade Changes
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Solution Overview
Problem
Existing circular saws face challenges in attaching and removing circular saw blades due to tight clearances, making conventional attachment mechanisms inefficient.
Innovation Solution
The circular saw design includes a blade mount with an inner flange that contacts the circular saw blade and an outer flange retained by a fastener, allowing for selective and operative attachment of the blade without requiring significant translational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional attachment mechanisms are used, then blade retention is achieved, but attachment and removal become difficult due to tight clearances
Solution Approach 1:
The blade mount is segmented into distinct functional components: an inner flange with a blade-contacting surface for securing the blade, and an outer flange with a projecting region that extends through the blade's central opening. This segmentation allows each component to perform its specific function independently, simplifying the overall attachment mechanism and enabling easier blade installation and removal despite tight clearances.
2Adaptability or versatility
If the inner flange includes structures projecting away from the blade-contacting surface, then additional functions may be achieved, but blade attachment becomes more difficult due to clearance constraints
Solution Approach 1:
The outer flange's projecting region extends in a radial direction through the blade's central opening, utilizing the z-dimension (depth) rather than adding radial complexity at the blade-contacting surface. This dimensional transition allows the attachment mechanism to achieve versatile functionality while maintaining ease of operation by avoiding obstructions in the tight radial clearance zone.
3Volume of moving object
If tight clearances are maintained in the circular saw, then compact design is achieved, but blade attachment and removal become challenging
Solution Approach 1:
The outer flange's projecting region is designed to nest within the blade's central opening during attachment, and the inner flange nests against the blade's outer surface. This nesting arrangement allows the blade mount components to occupy minimal space within the compact circular saw while still enabling straightforward blade attachment and removal operations.
Data Source
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AI summary
Circular saws (10) that include blade mounts (108) for circular saw (10) blades and methods of attaching circular saw (10) blades to circular saws (10) are disclosed herein. The circular saws (10) include a motor (90), an arbor (100), and a blade mount (108). The motor (90) includes a motor shaft (92) configured to rotate about a shaft rotational axis. The arbor (100) is configured to receive a torque from the motor (90) when the motor shaft (92) rotates about the shaft rotational axis. The blade mount (108) is operatively attached to the arbor (100) and is configured to selectively and operatively attach a circular saw blade (200) to the arbor (100). The blade mount (108) includes an inner flange (112) that includes an inner flange (112) blade-contacting surface that faces away from the motor (90). The inner flange (112) is free from any structure that projects away from the motor (90) and also away from the inner flange (112) blade-contacting surface.