Hand Power Tool Guide Device Roller Arrangement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hand-held power tools with guide devices face difficulties in maneuverability when used away from guide rails, as they tend to have high frictional resistance on substrates like workpieces or ground surfaces, making them hard to move smoothly and precisely.
Innovation Solution
The integration of a roller arrangement into the guide device allows it to roll comfortably on both guide rails and substrates, enabling easy operation and precise work, with adjustable castors and sliding surfaces for adaptability and reduced friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the guide device is designed with sliding surfaces for use on guide rails, then it can be guided precisely along the guide rail, but it becomes difficult to move on substrates like workpieces or ground surfaces due to high frictional resistance
Solution Approach 1:
The patent introduces rollers as an intermediary element between the guide device and the substrate/guide rail. The rollers convert sliding friction into rolling friction, enabling the guide device to move easily on substrates while maintaining guidance precision when used with guide rails. The rollers act as a mediator that adapts the contact interface to different operating conditions.
Solution Approach 2:
The guide device transitions from a static sliding surface design to a dynamic system with movable rollers. The rollers can be positioned and adjusted as needed, allowing the device to adapt its contact mechanism dynamically - using rollers for movement on substrates and sliding surfaces for precise guidance on guide rails.
2Ease of operation
If the guide device uses castors with large distance from the ground, then it rolls freely on the ground, but the lower wall surface is spaced from the ground reducing stability
Solution Approach 1:
The guide device is segmented into multiple functional elements: castors for movement, guide surfaces for guidance, and a structured framework. This segmentation allows each component to fulfill its specific function - castors provide ease of movement while the guide surfaces and framework maintain stability during operation.
Solution Approach 2:
Different parts of the guide device have different properties optimized for their specific functions. The castor area is designed for rolling movement with appropriate clearance, while the guide surfaces and framework provide structural stability. Each local region has qualities tailored to its operational requirements.
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 enhances the ease of handling and precision of hand-held power tools by reducing frictional resistance, allowing them to move smoothly on various surfaces, including rough substrates and guide rails, thus improving operational efficiency and accuracy.
Implementation Method 1
The guide device can be moved by means of a roller arrangement on the workpiece or another substrate
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4c
AI summary
The guiding device has a roller assembly with a castor, with which the guiding device is moved on a subsurface. A guiding surface extends in a longitudinal direction of the guiding device for guiding transverse to the longitudinal direction. The guiding device is guided on the subsurface with its lower side.