Oscillating Tool Clamp Assembly With Lever-Locked Open Position
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Solution Overview
Problem
Existing oscillating tools lack an efficient mechanism for easily switching between open and closed positions of the blade clamp assembly, making it difficult to insert or remove accessories without manual effort and without secure holding in the closed position.
Innovation Solution
An oscillating tool design featuring a clamp assembly with a sliding and fixed clamp configuration, an actuating lever, and a locking lever, where the actuating lever moves the clamp assembly between open and closed positions, and the locking lever maintains the open position, allowing for easy accessory insertion and secure holding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual clamp mechanism is used without actuating levers, then the device complexity is reduced, but the ease of operation deteriorates as users must manually effort to switch between open and closed positions
Solution Approach 1:
An actuating lever is introduced as an intermediary mechanism between the user's hand and the clamp assembly. The lever translates user input into controlled movement of the clamp, enabling easy switching between open and closed positions without requiring direct manual manipulation of the clamp itself.
Solution Approach 2:
The clamp mechanism incorporates movable components including a sliding clamp that can move along guide grooves and a locking lever that can engage or disengage from locking positions. This dynamic design allows the clamp to transition smoothly between states while maintaining structural integrity.
2Reliability
If the clamp assembly is held in open position without a locking mechanism, then the device complexity is reduced, but the reliability deteriorates as the clamp cannot securely hold the accessory
Solution Approach 1:
A locking lever serves as an intermediary component that engages with the clamp assembly to secure it in the open position. This locking mechanism provides reliable position holding without requiring complex additional structures, as the lever integrates with the existing clamp geometry.
3Ease of operation
If the actuating lever is positioned far from the clamp assembly, then the ease of operation is improved for user access, but the device complexity increases due to additional connecting components
Solution Approach 1:
A connector is used to replace direct mechanical coupling between the actuating lever and clamp assembly. This substitution allows the lever to be positioned at an ergonomically accessible location while maintaining functional connection through the connector, which simplifies the overall mechanical arrangement compared to rigid direct coupling.
Data Source
AI summary
An oscillating tool includes a housing, a motor housed in the housing and a clamp assembly operatively driven by the motor in an oscillating motion. The clamp assembly can hold an accessory such as a blade or sanding attachment, and the clamp assembly includes a first clamp and a second clamp. The oscillating tool also includes a clamp lever and an actuating lever. The clamp lever is operatively coupled to the first clamp to move the first clamp such that clamp assembly is moved from a closed position to an open position. The actuating lever is operatively coupled to the clamp lever to effect movement of the clamp lever, movement of the clamp lever causing the clamp assembly to move from the closed position to the open position.