Anti-Vibration Element with Progressive Damping Section
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Solution Overview
Problem
Existing anti-vibration elements in working devices, such as chain saws and soil compactors, often buckle under stress, leading to insufficient damping due to thin wall thickness, resulting in inadequate vibration absorption.
Innovation Solution
A ring-shaped damping section with a progressive design that widens continuously, providing increased stability and effective damping by coordinating wall thickness and opening degree, allowing the anti-vibration element to fold outwards under force, and featuring elevations to prevent suction, ensuring effective contact and assembly without additional fastening means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the wall thickness of the stop buffer is made small, then the device complexity is reduced, but the anti-vibration element buckles under stress resulting in insufficient damping
Solution Approach 1:
The anti-vibration element transitions from a rigid structure to a dynamic structure with a foldable damping section. The damping section can fold outwards when force is applied, changing its configuration to provide enhanced damping exactly when needed during operation, rather than maintaining a fixed rigid structure throughout.
Solution Approach 2:
The damping section introduces a new dimensional aspect to the anti-vibration element by incorporating a foldable structure that changes its effective thickness and configuration. This allows the element to adapt its damping characteristics in response to operational forces, moving beyond a simple linear wall thickness design.
2Reliability
If the anti-vibration element is designed with a foldable damping section, then the damping effect is improved, but the device complexity increases
Solution Approach 1:
The anti-vibration element is segmented into distinct functional sections: a base body and a separate foldable damping section. This segmentation allows each part to be optimized independently - the base body provides structural support while the damping section provides vibration absorption, simplifying the overall design through functional decomposition.
Solution Approach 2:
The damping section is designed to automatically fold outwards when force is applied during operation, without requiring external control mechanisms. The structure self-activates based on the operational conditions, eliminating the need for complex control systems while maintaining enhanced damping functionality.
3Reliability
If the damping section is made thinner to allow outward folding, then the damping effect is improved, but the stability of the anti-vibration element decreases
Solution Approach 1:
The anti-vibration element transitions from a rigid structure to a dynamic structure with a foldable damping section. The damping section can fold outwards when force is applied, changing its configuration to provide enhanced damping exactly when needed during operation, rather than maintaining a fixed rigid structure throughout.
Solution Approach 2:
The anti-vibration element is segmented into distinct functional sections: a base body and a separate foldable damping section. This segmentation allows each part to be optimized independently - the base body provides structural support while the damping section provides vibration absorption, simplifying the overall design through functional decomposition.
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 achieves superior damping performance with progressive characteristics, maintaining stability and preventing suction, thus enhancing the overall vibration damping capability while maintaining a compact design.
Implementation Method 1
The damping section (25) has a wall (37) which is circumferential and ring-shaped and which widens continuously in the direction of the handle housing (11)... This comparatively thin design of the damping section allows it to be turned outwards. At the same time, sufficiently high stability and a good damping effect are achieved.
Implementation Method 2
The anti-vibration element (19) has a base body (24) on which the damping section (25) is formed... In order to facilitate assembly of the anti-vibration element, provision is made for the anti-vibration element to have an assembly opening... An advantageous damping behavior is achieved if the anti-vibration element has a stop (27) which is at a distance from the second housing part when the working device is in the unloaded state.
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
A working device has at least one handle (12) and a drive motor (3). The handle (12) is connected to the drive motor (3) via at least one anti-vibration element (16, 17, 18, 19, 20). The anti-vibration element (18, 19) is held on a first housing part and interacts with a second housing part during operation. To achieve good damping, the anti-vibration element (19) includes a damping section (25) with an annular wall (35) that widens towards the second housing part.