Oscillating Multi-Tool Clamp Release for Stuck Accessory Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing oscillating multi-tools face challenges in easily removing tool accessories that may stick to the tool mounting part due to the clamping mechanism, leading to difficulties in tool exchange and potential damage.
Innovation Solution
The power tool incorporates a clamping mechanism with a push-down member that moves downward relative to the spindle upon manual unclamping, allowing the tool accessory to be easily disengaged from the tool mounting part, even if it has stuck, by pushing it down via the push-down member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clamp shaft and tool accessory are pressed together with high clamping force to prevent loosening during operation, then the reliability of tool accessory retention is improved, but the tool accessory may stick to the tool mounting part making removal difficult
Solution Approach 1:
The removal function is segmented from the clamping function. The engagement member that prevents radial movement during operation is separated from the clamp shaft and can be independently moved to a second position during removal, allowing the clamp shaft to be pulled out without the engagement member interfering with the stuck tool accessory.
Solution Approach 2:
The push-down member performs a preliminary action by pushing the tool accessory downward before the clamp shaft is pulled out. This preliminary push-down action breaks the adhesion between the tool accessory and tool mounting part, making subsequent removal easier.
2Stability of the object's composition
If the engagement member is always engaged with the clamp shaft to prevent radial movement, then the stability of the clamping mechanism is improved, but the clamp shaft cannot be easily removed for tool exchange
Solution Approach 1:
The engagement member transitions from a static always-engaged state to a dynamic state where it can move between a first position (engaged during operation) and a second position (disengaged during removal). This dynamic behavior allows the system to adapt to different operational phases.
Solution Approach 2:
The engagement member is separated from the first holding member, allowing independent movement. This segmentation enables the engagement member to be moved to the second position while the first holding member remains in place, facilitating easy removal of the clamp shaft.
3Manufacturing precision
If the tool accessory is firmly clamped between the clamp shaft and tool mounting part, then the precision of tool accessory positioning is improved, but the tool accessory may stick along the inclined surfaces making removal difficult
Solution Approach 1:
The push-down member performs a preliminary action by pushing the tool accessory downward along the inclined surfaces before removal. This preliminary push breaks the adhesion that forms along the inclined surfaces during firm clamping, enabling easy subsequent removal.
Solution Approach 2:
The push-down member acts as an intermediary between the user and the stuck tool accessory. Instead of directly pulling the clamp shaft against the stuck accessory, the push-down member mediates by first pushing the accessory down to break adhesion, then the clamp shaft can be easily removed.
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
This solution enables effortless removal of tool accessories, preventing damage and simplifying the tool exchange process, while ensuring reliable operation and user convenience.
Implementation Method 1
The first biasing member is configured to bias the clamp shaft upward toward a clamp position
Data Source
AI summary
A power tool, such as an oscillating multi-tool, is configured to drive a tool accessory in an oscillating manner. The power tool includes a motor, and a spindle supported to be rotatable around a driving axis and configured to pivotally oscillate the tool accessory, which is removably mounted on the spindle, using power generated by the motor. An inner housing of the power tool houses the motor and the spindle, and has at least one airflow inlet and at least one airflow outlet. An outer housing of the power tool houses the inner housing and is elastically connected to the inner housing via at least one elastic member to be movable relative to the inner housing. A partition is disposed between the at least one inlet and the at least one outlet. The partition divides a space defined between the inner and outer housings into first and second airflow spaces.