Anti-Twist Metal Tips for Rubber-Metal Buffer Fastening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional fastening methods for attaching a plastic component, such as an air intake duct, to a load-bearing component like a truck's cab rear wall using rubber-metal buffers often result in twisting of the buffers during screwing, which compromises their damping properties and service life.
Innovation Solution
Incorporating metal tips that protrude from a metal disk and engage with the plastic component to form a form-fit anti-twist device, preventing relative rotation between the rubber-metal buffer and the load-bearing component during screwing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber-metal buffer is used as an elastic support between the load-bearing component and the plastic component, then vibration damping properties are improved, but the buffer twists during screwing which reduces its service life and damping performance
Solution Approach 1:
The anti-rotation device is segmented into multiple metal points distributed on the metal disc, where each metal point independently engages with the plastic component to prevent rotation. This segmentation allows the buffer to maintain its damping function while distributing the anti-rotation load across multiple contact points.
Solution Approach 2:
The metal points act as an intermediary element between the metal disc and the plastic component, creating a form-fit connection that prevents rotation without compromising the rubber-metal buffer's damping properties. The metal points transfer rotational constraints from the plastic component to the metal disc, protecting the buffer from twisting.
2Reliability
If a rubber-metal buffer is used as an elastic support, then vibration decoupling is improved, but the buffer undergoes relative rotation during screwing which compromises its damping properties
Solution Approach 1:
The metal points are pre-positioned on the metal disc before the screwing operation begins. During the screwing process, these pre-positioned metal points immediately engage with the plastic component to prevent rotation, ensuring the buffer maintains its proper orientation throughout the entire fastening operation.
Solution Approach 2:
The anti-rotation device combines metal (the metal disc with metal points) and plastic (the plastic component) materials to create a composite connection system. The metal points provide rotational stability while the rubber-metal buffer maintains its vibration damping function, achieving both stability and damping performance.
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
This solution effectively prevents twisting of the rubber-metal buffers, maintaining their damping properties and extending their service life by creating a secure, anti-rotation connection between the plastic and load-bearing components.
Implementation Method 1
metal points that protrude from a metal disk and engage with the plastic component to form a form-fit anti-twist device, preventing relative rotation
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a method for a fastening device for attaching a plastic component to a load-bearing component. The fastening device comprises a plastic component that is attached to the load-bearing component by means of a screw connection, and a rubber-metal buffer (4) that is arranged as an elastic support between the load-bearing component (2) and the plastic component (1). The fastening device further comprises at least one metal tip (11) that is arranged between the rubber-metal buffer (4) and the plastic component (1), projects from a metal disc (10) towards the plastic component (1), and, when the plastic component (1) is screwed to the load-bearing component (2), engages at least partially in a surface of the plastic component.