Power Tool Accessory Brace With Quick-Release Arm Assembly
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Solution Overview
Problem
Existing power tool accessory systems require the use of secondary tools for removing and reattaching accessories, which is time-consuming and inefficient, as the entire clamping assembly needs to be decoupled and recoupled.
Innovation Solution
A power tool accessory system with a brace that includes a clamp assembly rigidly coupled to the power tool housing and an arm assembly with a quick release connector, allowing the arm assembly to be removable without tools while remaining coupled to the tool housing, enabling tool-free attachment and detachment of power tool accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the entire clamping assembly is decoupled and recoupled for accessory removal, then the accessory can be removed, but the operation becomes time-consuming and inefficient
Solution Approach 1:
The clamping assembly is divided into two functional segments: a stationary clamp body that remains attached to the tool housing, and a movable arm assembly that can be independently removed. This segmentation allows the user to remove only the arm assembly (and attached accessory) without disturbing the clamp body, thereby reducing the time and complexity of accessory changes while maintaining secure attachment during operation.
2Ease of operation
If the arm assembly is made removable without tools, then ease of operation improves, but the connection reliability may be compromised
Solution Approach 1:
The arm assembly incorporates a self-servicing quick-release mechanism with spring-loaded lugs and corresponding receptacles. The spring bias automatically maintains engagement pressure, and the design allows the arm assembly to be secured or released by simple manual manipulation without requiring external tools. This self-service mechanism ensures both ease of operation and reliable connection during use.
Data Source
AI summary
A power tool accessory system for a power tool includes a power tool accessory with a housing, an input shaft rotatably driven by a power tool, and a working tool driven to perform an operation upon rotation of the input shaft. The system also includes a brace configured to removably couple the housing to the power tool while the input shaft rotates. The brace includes a clamp assembly configured to be fixedly coupled to a base of the power tool handle, and an arm assembly with a first end portion configured to be coupled to the housing and a second end portion configured to be coupled to the clamp assembly. The second end portion is removable from the clamp assembly while the clamp assembly remains fixedly coupled to the power tool to enable removal of the power tool accessory from the power tool.