Integrated Chuck Key Holder for Keyed Power Tool Accessibility
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Solution Overview
Problem
Power tools with keyed chucks often face the issue of misplaced chuck keys due to their separate nature, which can lead to inconvenience and inefficiency in operation.
Innovation Solution
A chuck key holder is integrated into the power tool housing, featuring a U-shaped body with recesses to securely retain a T-shaped chuck key, including a spring clip and a sliding lock mechanism to ensure the key is always available and less likely to be misplaced, while also allowing for easy removal and alternative use as a tool bit holder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the chuck key is kept separate from the power tool, then the tool structure remains simple, but the chuck key can be misplaced and is inconvenient to use
Solution Approach 1:
The chuck key holder is integrated into the power tool housing, combining the key storage function with the tool structure. The holder includes a recess that receives the chuck key and a spring clip that engages with the key, ensuring it remains attached to the tool during operation while maintaining a compact design.
Solution Approach 2:
The spring clip acts as an intermediary mechanism between the chuck key and the holder. It provides a reliable connection that allows easy insertion and removal of the key while preventing it from being misplaced, thus mediating between the need for key accessibility and secure retention.
2Reliability
If a secure retention mechanism is added to the chuck key holder, then the key is less likely to be misplaced, but the holder structure becomes more complex
Solution Approach 1:
The spring clip mechanism is self-actuating, using the insertion motion of the chuck key itself to compress the spring and engage the retention feature. This eliminates the need for additional actuators or complex locking mechanisms, achieving reliable retention through a simple, self-service design.
Solution Approach 2:
The holder is divided into distinct functional elements: the recess for receiving the key, the spring clip for retention, and the release mechanism. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure manageable and easy to manufacture.
3Reliability
If the chuck key holder is permanently attached to the housing, then the key is always available, but the holder cannot be removed for cleaning or replacement
Solution Approach 1:
The holder is designed with a removable coupling mechanism that allows it to be easily attached to and detached from the housing. This dynamic design enables the holder to remain securely in place during normal operation (ensuring key availability) while allowing removal for cleaning, maintenance, or replacement when needed.
Data Source
AI summary
A power tool includes a housing, a motor disposed in the housing, an output spindle extending outward from the housing and configured to be rotationally driven by the motor, a keyed chuck coupled to the output spindle for rotation with the output spindle, and a chuck key holder configured to releasably retain a chuck key with a first shaft with a key disposed thereon for operating the chuck, and a second shaft coupled to the first end portion of the first shaft generally perpendicular to the first shaft, the second shaft including a lever portion. The chuck key holder includes a first recess configured to receive the first shaft and a second recess with a sheath configured to receive the second shaft with the lever portion exposed from the sheath.