Damping Ring for Angle Grinder Protective Device Play Compensation
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Solution Overview
Problem
Handheld power tools experience relative movement between the protective device and the housing due to vibrations, leading to wear and increased noise, especially when used in abrasive environments, due to joint play and lack of effective damping.
Innovation Solution
Incorporation of a damping ring interacting with a groove around the flange neck or a damping element on the fixing device, which provides radial and axial damping and play compensation, reducing friction and noise, and allowing for easy replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a protective device is fixed to the housing using a form fit without adjustable clamping elements, then the device structure is simplified and manufacturing cost is reduced, but joint play remains between the protective device and housing causing relative movement during operation
Solution Approach 1:
A damping ring is introduced as an intermediary element between the protective device and the housing. This damping ring absorbs joint play and prevents relative movement between the protective device and housing during operation, while maintaining the simple form-fit connection structure without adjustable clamping elements.
Solution Approach 2:
The damping ring is pre-installed in the groove of the housing before the protective device is mounted. This beforehand cushioning compensates for joint play in advance, preventing relative movement and wear during operation while keeping the overall structure simple and cost-effective.
2Reliability
If damping elements are integrated into the fixing device, then damping effectiveness is improved, but device complexity increases
Solution Approach 1:
The damping ring is merged with the groove structure of the housing, forming an integrated damping mechanism. The damping ring fits into a circumferential groove that is already part of the housing design, combining the damping function with the existing structural features without adding separate complex components.
Solution Approach 2:
The damping ring is designed as a flexible elastic element that can deform to absorb vibrations and joint play. This flexible ring provides effective damping while maintaining a simple ring-shaped structure that does not significantly increase device complexity.
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 solution effectively reduces relative movement and wear between the protective device and the housing, minimizing noise and extending tool lifespan by providing reliable damping and play compensation, while being cost-effective and easy to maintain.
Implementation Method 1
a damping ring interacting with a groove running around the outer circumference of the flange neck
Implementation Method 2
the means acting in the radial direction has a damping effect between the protective device and the housing of the hand-held power tool in particular due to the non-critical friction that is possible
Implementation Method 3
at least one means acting in the axial direction is at least one means cooperating with a groove
Implementation Method 4
The means acting in the axial direction between the protective device and the housing of the hand-held power tool achieve both a damping effect and a play-compensating effect
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a hand-held power tool, particularly and angle grinder (10), having a housing (12), having a flange neck (14), and having a protection device (16) that can be accommodated on the flange neck (14), which forms a receptacle region for a tool. The invention proposes that at least one device (22, 24) be provided for damping and/or balancing of clearance between the housing (12) and the protection device (16).