Power Tool Chuck Locking Mechanism for One-Handed Clamping
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Solution Overview
Problem
Existing chuck devices for power tools require two hands to operate, one for inserting the working accessory and the other for pressing a quick clamp button, which is inconvenient and prone to clamping failures due to spring failure.
Innovation Solution
A chuck device with a locking mechanism featuring a sleeve, biasing element, and elongated rocker arm, allowing single-handed operation by rotating the rocker arm to bias the sleeve against the biasing element for secure clamping and easy release, using a spherical structure and limiting structures to maintain retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick clamp button is used for single-handed operation, then ease of operation is improved, but reliability deteriorates due to spring failure
Solution Approach 1:
The locking mechanism is divided into two independent locking portions (first and second locking portions) that can function separately. This segmentation ensures that if one locking portion fails, the other can still maintain the clamped state, thereby improving reliability while preserving ease of operation through the quick clamp button interface.
Solution Approach 2:
The design incorporates redundant locking capacity in advance by providing two locking portions. This prior cushioning against potential spring failure ensures that the system maintains reliability even when one locking mechanism fails, while the quick clamp button interface continues to provide ease of operation.
2Reliability
If an additional accessory such as a key is used to unlock and lock, then reliability is improved, but device complexity and ease of operation worsen
Solution Approach 1:
The quick clamp button integrates the unlocking function directly into the clamping mechanism itself, merging the accessory-free operation with the locking function. This eliminates the need for separate keys or tools, reducing device complexity while maintaining reliability through the integrated dual locking portions.
Solution Approach 2:
The quick clamp button enables the user to perform both clamping and unlocking operations directly through the device interface without requiring external accessories. This self-service capability reduces device complexity by eliminating keys while maintaining reliability through the dual locking portion design.
3Reliability
If an additional accessory such as a key is used to unlock and lock, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The locking mechanism is divided into two independent locking portions (first and second locking portions) that can function separately. This segmentation ensures that if one locking portion fails, the other can still maintain the clamped state, thereby improving reliability while preserving ease of operation through the quick clamp button interface.
Solution Approach 2:
The quick clamp button enables the user to perform both clamping and unlocking operations directly through the device interface without requiring external accessories. This self-service capability reduces device complexity by eliminating keys while maintaining reliability through the dual locking portion design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure, single-handed insertion and locking of working accessories with reduced risk of clamping failure, as the biasing element is consistently supported by the sleeve, enhancing stability and ease of use.
Implementation Method 1
a biasing element, where the sleeve supports the biasing element
Implementation Method 2
a biasing element, where the sleeve supports the biasing element
Data Source
AI summary
A chuck device includes a connecting mechanism and a locking mechanism, where the locking mechanism includes a driving portion, a first locking portion and a second locking portion, where the first locking portion at least partially extends into a first receiving portion; and the second locking portion is rotatably connected to the first receiving portion through a second shaft. When the locking mechanism is in a first state, the second locking portion rotates along a first direction to drive a sleeve to bias against a biasing element and release a limitation on the first locking portion.