Hand-Held Power Tool Roller Locking Mechanism for Stable Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hand-held power tools lack stable support at a localized spot during operation, requiring the use of additional support feet and complex mounting procedures.
Innovation Solution
A locking device that secures rollers against rotation relative to the running gear, eliminating the need for additional support feet by using locking elements and counter-locking elements for a stable, symmetrical two-point support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rollers are used for guiding the power tool during displacement, then the power tool can be easily moved, but the power tool cannot be stably supported at a localized spot during operation
Solution Approach 1:
The roller mounting is designed to be dynamically changeable between two states: rotatable for displacement guidance during tool movement, and locked against rotation for stable support at localized spots during operation. This dynamic reconfiguration allows the same component to serve dual purposes without requiring alternative support feet.
2Stability of the object's composition
If support feet are used to provide stable support at localized spots, then stable support is achieved, but additional components and complex mounting procedures are required
Solution Approach 1:
The rollers are designed to perform multiple functions: guiding the power tool during displacement when rotatable, and providing stable support at localized spots when locked against rotation. This eliminates the need for separate support feet and simplifies the device by removing alternative mounting procedures.
Solution Approach 2:
The support function previously requiring separate support feet is merged into the roller assembly itself. By incorporating locking mechanisms that allow rollers to be secured against rotation, the same component provides both guidance during movement and stable support during operation, reducing the total number of components.
3Stability of the object's composition
If rollers are secured against rotation to provide stable support, then stable support is achieved, but the rollers cannot rotate for guidance during displacement
Solution Approach 1:
The roller mounting is designed to be dynamically changeable between two states: rotatable for displacement guidance during tool movement, and locked against rotation for stable support at localized spots during operation. This dynamic reconfiguration allows the same component to serve dual purposes without requiring alternative support feet.
Data Source
AI summary
A hand-held power tool for driving a cutting or grinding working tool (11) includes a running gear (13) having a roller (15) and a support section (14) for supporting the roller (15), and a locking device (20) for locking the roller (15) against rotation relative to the support section (14).