Vibration-Damping Device With Segmented Rubber Buffer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vibration-damping devices face challenges in achieving both high buffer and displacement limiting functions simultaneously due to limitations in rubber buffer layer thickness and size, which affects their reliability and durability.
Innovation Solution
A vibration-damping device with a novel structure featuring a concave groove on the stopper portion and inner and outer protrusions on the rubber buffer layer, allowing for effective buffer and displacement limiting functions by optimizing the volume and shape of the rubber buffer layer, with the inner protrusion inserted into the concave groove and the outer protrusion protruding outward, and a displacement regulating portion covering the opposing face.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rubber buffer layer thickness is increased to improve buffer function, then the buffer function is improved, but the device size increases
Solution Approach 1:
The rubber buffer layer is divided into regions of different thicknesses, allowing the buffer function to be enhanced in specific areas without uniformly increasing the overall device volume. The first region provides buffer performance while the second region maintains compact dimensions.
Solution Approach 2:
The thickness dimension is locally optimized: the first region has greater thickness for buffer performance while the second region has smaller thickness for size control. This local quality variation achieves buffer function improvement without proportional increase in overall device size.
2Reliability
If the rubber buffer layer thickness is increased to improve buffer function, then the buffer function is improved, but the displacement limiting function reliability is lowered
Solution Approach 1:
The rubber buffer layer is segmented into a first region with greater thickness for buffer function and a second region with smaller thickness for precise displacement limiting. This segmentation ensures that the displacement limiting function operates in a region with controlled thickness, maintaining manufacturing precision while still providing adequate buffer performance in the first region.
Solution Approach 2:
Different local regions are assigned different thickness qualities: the first region has larger thickness for buffer performance while the second region has smaller, more precisely controlled thickness for displacement limiting accuracy. This local differentiation resolves the conflict between buffer function and displacement precision.
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 design enables both excellent buffer and displacement limiting effects, allowing for controlled relative displacement between mounting members while maintaining durability and adjustability of the functions through the specific design of the protrusions and buffer layer.
Implementation Method 1
a vibration-damping device having a first mounting member and a second mounting member connected by a main rubber elastic body
Implementation Method 2
the stopper mechanism is required to have a buffer function to alleviate the shock at the time of contact between the first and second stopper portions
Data Source
AI summary
A vibration-damping device wherein a concave groove is provided on an opposing face of at least one of first and second stopper portions to another. An inner protrusion is formed on a rubber buffer layer overlapped with the opposing face so as to be inserted into the concave groove, and both sides of the inner protrusion in a lengthwise direction of the concave groove are free end faces. An outer protrusion is formed at a formation part of the inner protrusion on the rubber buffer layer so as to protrude outward from the concave groove A displacement regulating portion with a lower surface height than that of a distal end face of the outer protrusion is provided on the rubber buffer layer covering an area of the opposing face located away from the concave groove to both sides in a widthwise direction.