Tool Holder Locking Bolt Damping for Idle-Run Wear Reduction
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Solution Overview
Problem
Existing hand-held power tools lack a secure and efficient mechanism for damping the forces acting on insert tools during idle running states, leading to potential wear and reduced service life.
Innovation Solution
A hand-held power tool design featuring a locking bolt perpendicular to the inner receiving area, paired with a damping element directly on a force transmission element within a receiving chamber, which includes a damping element arranged between the side wall and the force transmission element, allowing for partial damping of forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking bolt is provided to lock the insert tool in the inner receiving area, then the insert tool can be securely locked in position, but the force acting on the insert tool during idle running state causes wear and reduces service life
Solution Approach 1:
The patent applies beforehand cushioning by introducing a damping element that is pre-positioned to absorb and dampen forces acting on the locking bolt during idle running state. This damping element is integrated into the locking mechanism, allowing it to cushion the forces before they can cause wear to the locking bolt and insert tool, thereby maintaining reliable locking while protecting against force-induced wear.
2Reliability
If the damping element is arranged directly on the force transmission element in the receiving chamber, then secure and reliable damping of forces is achieved, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating the damping element directly onto the force transmission element within the receiving chamber. This combination creates a unified structure where the damping function is built into the existing force transmission pathway, achieving reliable damping without adding separate, complex damping systems. The damping element becomes part of the force transmission element itself, simplifying the overall structure while maintaining effective force damping.
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 design provides secure and reliable damping of forces, reducing wear and enhancing the service life of the tool by gradually decelerating the striking mechanism, thereby improving durability.
Implementation Method 1
the locking bolt is paired with at least one damping element for at least partly damping a force acting on the insert tool in an idle running neutral state of the hand-held power tool
Data Source
AI summary
A hand-held power tool includes a tool receiving area which has an inner receiving area that is designed to receive an insert tool and also includes a striking mechanism for applying striking pulses to the insert tool. A locking bolt is provided in order to lock the insert tool, wherein the locking bolt is connected to an operating element which is designed to position the locking bolt such that the insert tool is locked in a locked position and is unlocked in an unlocked position in order to be removed from the inner receiving area, and the locking bolt is paired with at least one damping element for at least partly damping a force acting on the insert tool in an idle running state of the hand-held power tool. The tool receiving area is paired with a receiving chamber in which the locking bolt and the at least one damping element are arranged. The locking bolt is at least partly received in a receiving area of a force transmission element, and the at least one damping element is arranged directly on the force transmission element in the receiving chamber.