Pivoting Guide Device for Hand Power Tools
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Solution Overview
Problem
Existing guide devices for hand-held power tools, such as plunge-cut saws and wall chasers, face difficulties in maintaining a consistent pivoting position, leading to unsatisfactory depth of cut results.
Innovation Solution
A guide device with a pivot bearing and a roller arrangement, featuring a holding contour for secure positioning and a depth stop device, allowing for easy adjustment and precise control of the cutting depth, and a suction hood that doubles as a guide device for versatile tool compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pivot bearing is used to mount the motor assembly on the guide device, then the motor assembly can be pivotally adjusted, but it is difficult to maintain the desired pivoting position
Solution Approach 1:
The holding contour is pre-formed on the motor assembly, and the counter-holding contour is pre-formed on the guide device. These predetermined geometric features are designed to engage with each other at specific pivoting positions, enabling the operator to quickly snap the motor assembly into the desired position without manual adjustment or complex locking mechanisms.
Solution Approach 2:
The holding contour and counter-holding contour act as intermediary elements between the motor assembly and the guide device. These intermediate geometric features facilitate the connection and positioning, enabling easy adjustment while maintaining the pivoting position through their interlocking design.
2Ease of operation
If the pivoting position is adjusted without proper positioning mechanisms, then operation flexibility is improved, but the depth of cut becomes inconsistent
Solution Approach 1:
The holding and counter-holding contours are pre-designed to engage at predetermined pivoting positions that correspond to specific depth of cut requirements. This preliminary geometric configuration ensures that when the contours engage, the motor assembly is automatically positioned at the correct angle, guaranteeing consistent depth of cut while maintaining operational flexibility.
Solution Approach 2:
The invention replaces complex mechanical positioning systems with a simple geometric interlocking mechanism. The holding contour and counter-holding contour use their shapes alone to define and maintain precise pivoting positions, eliminating the need for additional mechanical depth control mechanisms and ensuring consistent depth of cut through pure geometric constraints.
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
The guide device ensures easy handling and precise operation by maintaining the desired pivoting position and cutting depth, enabling smooth operation on both substrates and guide rails, enhancing the usability and versatility of hand-held power tools.
Implementation Method 1
roller arrangement (60), with which the guide device (14a, 14b) can be moved on a substrate (79, 80)
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4c
AI summary
The device has a swivelable bearing provided for swivelable bearing of motor components (11a) to swivel the components between an upper swiveling position and lower swiveling position. A fixing device (31) comprises a holding element (47), where holding contours are arranged at the holding element for fixing the motor component in the lower swiveling position. The holding contours are connected with counter-retaining contours i.e. contour-resting contours, in the lower swiveling position, where the counter- retaining contours are fixed regarding to a guiding direction. An independent claim is also included for a hand-tool machine that comprises a motor component.