Power Tool Shoe Spanner Functionality
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Solution Overview
Problem
Users of electric power tools, such as dust-proof board trimmers, face the burden of needing to constantly prepare and manage a spanner for attaching and detaching tool tips, which increases the complexity and cost of tool management.
Innovation Solution
An electric power tool design where a single member, such as a shoe with a spanner portion, serves dual functions: as a contact member for the workpiece and for rotating the nut to affix or release the tool tip, eliminating the need for a separate spanner and reducing the number of components required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate spanner is provided for attaching and detaching tool tips, then the tool can be properly assembled and disassembled, but the user burden of preparing and managing the spanner increases
Solution Approach 1:
The patent combines the spanner function with the shoe (contact member) by providing a spanner portion on the shoe. This allows the shoe to serve dual purposes: as a contact member during operation and as a spanner for tightening the nut that attaches the tool tip to the output shaft. By merging these two previously separate functions into one component, the invention eliminates the need for a separate spanner tool while maintaining the ability to properly assemble and disassemble the tool tip.
Solution Approach 2:
The shoe (contact member) is designed with multi-functionality by incorporating a spanner portion that can rotate the nut. This universal component serves both as a contact member for supporting the tool during operation and as a spanner for tool tip attachment and detachment. The spanner portion is specifically designed to engage with the nut, allowing the same component to perform multiple functions that previously required separate tools.
2Device complexity
If the spanner function is integrated into the tool itself, then the number of components is reduced, but the structure of the contact member becomes more complex
Solution Approach 1:
The invention merges the spanner function with the shoe by providing a spanner portion on the shoe. This allows the shoe to serve dual purposes: as a contact member during operation and as a spanner for tightening the nut that attaches the tool tip to the output shaft. By merging these two previously separate functions into one component, the invention eliminates the need for a separate spanner tool while maintaining the ability to properly assemble and disassemble the tool tip.
3Reliability
If a nut is used to affix the tool tip to the output shaft, then the tool tip can be securely attached, but an additional tool (spanner) is required for tightening
Solution Approach 1:
The invention enables self-service by allowing the shoe (which is already part of the tool) to function as a spanner for tightening the nut. The spanner portion is specifically designed to engage with the nut, allowing the user to tighten or loosen the nut using the shoe itself rather than requiring a separate spanner tool. This self-service approach eliminates the need for additional tools while maintaining secure attachment of the tool tip through the nut.
Data Source
AI summary
A shoe attached to a shoe attachment portion includes a spanner portion. As the shoe can be separated from a tool main body of the cutout tool, the shoe can be used as a spanner. The shoe can function as the spanner for replacing a bit in a bit attachment mechanism. In addition, the shoe has its original function of the shoe by which a protrusion amount of the bit can be adjusted. Since the shoe is attached to the shoe attachment portion and held by the tool main body, it turns out that the spanner can be prepared for use with the cutout tool.