Hand Saw Pivoting Blade and Removable Clamp
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Solution Overview
Problem
Existing hand saws lack a convenient mechanism for blade pivoting and easy replacement, which complicates storage and maintenance, and do not efficiently facilitate both cutting and rasping operations.
Innovation Solution
A hand saw design featuring a pivoting blade that can be easily switched between extended and folded positions, with a removable blade and a blade clamp assembly that includes a locking and release mechanism, allowing for ergonomic handling and efficient cutting and rasping capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the blade is removably coupled to the handle, then the blade can be replaced when worn or broken, but the mechanism for blade attachment and removal becomes more complex
Solution Approach 1:
The blade and handle are segmented as separate removable components. The blade can be independently detached from the handle through a simplified coupling mechanism, allowing easy replacement without affecting the entire tool structure.
Solution Approach 2:
The blade is extracted as a removable component from the handle assembly. This allows the blade to be easily removed and replaced independently, simplifying the replacement process while maintaining a straightforward attachment mechanism.
2Volume of moving object
If the blade is pivotally coupled to the handle, then the saw can be folded for compact storage, but the pivoting mechanism increases device complexity
Solution Approach 1:
The blade is designed with dynamic positioning capability, allowing it to pivot between an extended working position and a folded storage position. This dynamic configuration enables compact storage while maintaining operational effectiveness, using a simple pivoting joint rather than a complex mechanism.
Solution Approach 2:
The blade can be folded back against the handle, nesting the blade within the overall tool profile. This nesting configuration minimizes the storage volume of the saw while maintaining a simple structural design without requiring complex pivoting mechanisms.
3Adaptability or versatility
If the blade includes projections for rasping operations, then the tool becomes more versatile, but the blade design becomes more complex
Solution Approach 1:
The blade is designed with multi-functionality, incorporating both cutting teeth along the edge and projections extending from the sides for rasping operations. This universal design allows a single blade to perform multiple functions (cutting and rasping) without requiring separate tools, while the projections are integrated into the blade structure in a straightforward manner.
Data Source
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AI summary
A hand saw includes a saw blade, a handle, and a blade carrier. The saw further includes a blade clamp assembly having a locking member that removably couples the saw blade to the blade carrier so that the saw blade pivots with the blade carrier about a pivot axis. An actuating button is manually movable generally transverse to a longitudinal axis of the saw blade by the user between an engaged position and a disengaged position. In the engaged position, the actuating button engages the blade carrier to retain the blade carrier and the saw blade in one of an extended position and a folded position. In the disengaged position, the actuating button is disengaged from the blade carrier so that the blade carrier and the saw blade can be pivoted between the extended and the folded positions of the saw blade.