Dust Protection Cap Structure for Vibration-Decoupled Tool Fittings
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Solution Overview
Problem
Existing power tool fitting devices and dust protection systems fail to effectively prevent dust penetration and mitigate vibration-induced wear, particularly when used with chipping hammers on mineral materials, leading to abrasive wear and component failure.
Innovation Solution
A tool fitting device with a dust protection device that features a form-fitting connection between a tool cap and a dust protection device, utilizing resilient materials for vibration decoupling and incorporating radial and axial spacings to prevent dust ingress and absorb vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the dust protection device is directly connected to the holding device, then the structural connection is simple, but vibration is transmitted from the holding device to the dust protection device, accelerating wear
Solution Approach 1:
A damping element is introduced as an intermediary component between the dust protection device and the holding device. This damping element absorbs vibrations and prevents them from being transmitted to the dust protection device, thereby reducing wear on both components while maintaining a relatively simple overall structure.
Solution Approach 2:
The dust protection device is made from a resilient material that combines dust sealing functionality with vibration absorption capabilities. This composite material approach allows a single component to address both dust protection and vibration decoupling requirements.
2Object-affected harmful factors
If sealing features are made tight to prevent dust penetration, then dust protection is improved, but vibration-induced wear between components is accelerated
Solution Approach 1:
The damping element serves as a mediator that maintains the tight sealing needed for dust protection while simultaneously absorbing vibrations that would otherwise cause wear at the sealing interface between components.
3Strength
If the dust protection device is made from rigid material, then structural strength is improved, but vibration and oscillation are not absorbed
Solution Approach 1:
The dust protection device is made from a resilient material that combines dust sealing functionality with vibration absorption capabilities. This composite material approach allows a single component to address both dust protection and vibration decoupling requirements.
Solution Approach 2:
The material properties of the dust protection device are changed from rigid to resilient, allowing it to absorb vibrations and oscillations while maintaining sufficient structural strength for its protective function.
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
Effectively prevents dust penetration and reduces vibration transmission, thereby minimizing abrasive wear and extending the lifespan of power tool components.
Implementation Method 1
the dust protection device to be formed at least partially from a resilient material. As a result, it is possible for the dust protection device to be able to be elastically deformed at least partially in order to fasten the dust protection cap to the tool fitting device and remove it from the tool fitting device again in an undamaged manner. Furthermore, the use of a resilient material allows vibration and oscillation to be absorbed.
Data Source
AI summary
Tool fitting device for a power tool, in particular a chipping hammer, including a holding device for receiving and holding a tool shank, a tool cap, and a dust protection device for preventing the penetration of dust into the tool fitting device. The tool cap includes at least one receiving element and the dust protection device includes at least one protruding element corresponding to the receiving element, such that the tool cap and the dust protection device are able to be connected together in a form-fitting manner. Dust protection device for use in a tool fitting device.