Oscillating Tool Clamp Lever for Easy Accessory Changes
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Solution Overview
Problem
Existing oscillating tools face challenges in efficiently actuating the blade clamp mechanism, particularly in transitioning between open and closed clamping positions, which affects the secure holding and easy insertion/removal of accessories.
Innovation Solution
The oscillating tool incorporates an actuating lever operatively coupled to a clamp lever through a connector, with a guide groove and a motor-driven output shaft, featuring a sliding clamp member and a fixed clamp member, allowing for precise control of the clamp assembly's movement between open and closed positions via a connecting strip and a locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional blade clamp mechanism is used, then the structure is simple, but the actuation efficiency and ease of operation are poor
Solution Approach 1:
The clamp lever is designed to move dynamically between open and closed positions along a guide groove, transitioning from a static clamp structure to a dynamic one that can be easily actuated. The actuating lever connected via connector enables smooth transitional movement, improving ease of operation while maintaining reasonable structural complexity.
Solution Approach 2:
A connector (such as a connecting strip) is introduced as an intermediary element between the actuating lever and the clamp lever. This mediator transfers the actuating force efficiently and enables the complex motion transformation needed to improve operation ease without excessive overall system complexity.
2Productivity
If the clamp assembly moves smoothly between positions, then accessory insertion is easy, but the mechanism requires more components
Solution Approach 1:
The clamp assembly is segmented into distinct components: a fixed clamp member, a movable clamp member, a clamp lever, and an actuating lever. This segmentation allows each component to perform its specific function in the motion sequence, enabling smooth transitions that improve productivity while distributing the complexity across manageable parts.
Solution Approach 2:
The clamp assembly utilizes dynamic movement along a guide groove to transition between open and closed positions. This dynamic approach allows smooth accessory insertion and removal, improving productivity. The guide groove constrains the motion path to achieve this smooth transition without requiring overly complex mechanisms.
3Reliability
If the clamp assembly is secured firmly, then accessory holding is secure, but the actuation requires more force
Solution Approach 1:
The connector between the actuating lever and clamp lever is designed with curved or angled geometry rather than a straight rigid connection. This curved path allows the actuating lever to move through a larger arc, converting a larger distance of lever movement into the clamping force needed, thereby reducing the instantaneous force required while maintaining secure holding reliability.
Solution Approach 2:
The clamp mechanism uses dynamic movement along a guide groove that provides mechanical advantage during the closing sequence. The guide groove's geometry allows the clamp lever to be pushed gradually into the closed position, distributing the required force over a longer actuation distance, which reduces peak force requirements while ensuring reliable clamping.
Data Source
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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 member and a second clamp member. The oscillating tool also includes a clamp lever and an actuating lever. The clamp lever is operatively coupled to the first clamp member to move the first clamp member such that clamp assembly is moved from a closed clamping position to an open unclamping 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 clamping position to the open unclamping position.