Fiber-Reinforced Plastic Engine Mount Flange Ring
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Solution Overview
Problem
Existing engine mounts face challenges in providing a durable, cost-effective solution that can handle both high static loads and dynamic vibrations while minimizing material usage and production costs.
Innovation Solution
A device with a full-circumferential flange ring made from fiber-reinforced plastic, featuring a mechanical barb structure for non-positive coupling without adhesives or vulcanization, and a plastic carrier with a spring body for resilient damping, reducing material height and weight while maintaining strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a bridge-shaped metal flange is used to surround the support section, then the load capacity and structural strength are improved, but the overall height and material quantity increase, leading to higher production costs
Solution Approach 1:
The patent changes the material parameter from metal to fiber-reinforced plastic, which has a higher strength-to-density ratio. This allows achieving the required load capacity with less material quantity, directly resolving the contradiction between strength and material usage
Solution Approach 2:
The patent employs fiber-reinforced plastic (composite material) for the flange ring, combining the strength benefits of fibers with the weight advantages of plastic. This composite approach enables reduced material quantity while maintaining or improving load capacity compared to solid metal construction
2Strength
If chemical adhesive or vulcanization is used to secure the liner to the flange ring, then the bonding strength is improved, but the manufacturing complexity and production costs increase
Solution Approach 1:
The patent replaces chemical bonding methods (adhesive/vulcanization) with a purely mechanical coupling system using barbs and recesses. This mechanical interlocking achieves sufficient bonding strength while eliminating the complexity of chemical processing steps, directly resolving the contradiction between bonding strength and manufacturing ease
Solution Approach 2:
The patent extracts and eliminates the chemical adhesive layer from the assembly process, relying solely on the mechanical barb-recess coupling. This removal of the chemical bonding step simplifies manufacturing while maintaining the necessary connection strength between the liner and flange ring
3Stability of the object's composition
If a full-circumferential flange ring is used instead of a bridge-shaped flange, then the structural completeness and load distribution are improved, but the overall height and spatial requirements increase
Solution Approach 1:
The patent employs a thin-walled flange ring structure made from fiber-reinforced plastic that provides complete circumferential support while maintaining minimal thickness. The fiber reinforcement compensates for the reduced material thickness, allowing structural completeness without increased overall height, thus resolving the contradiction between structural stability and spatial dimensions
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 achieves cost savings, reduced weight, and increased load capacity with a simpler manufacturing process, allowing for efficient vibration damping and reduced production costs.
Implementation Method 1
A spring body is elastically supported both on the support section and on the inside of the flange in order to allow a resilient damping movement between the carrier and the flange ring
Implementation Method 2
The flange ring is made from a particularly fiber-reinforced plastic piece, particularly injection molded
Data Source
Figure 1
Figure 2
AI summary
A device for the elastic mounting of an engine, in particular an engine transmission unit, on a motor vehicle body, comprising a rigid support (3) with a supporting section (15) and a mounting section (21), to which the engine can be fastened, a rigid flange ring (5) which can be fastened to the motor vehicle body and surrounds the full circumference of the supporting section, and a spring body (7) which is elastically supported on the supporting section of the support and on an inner side of the flange ring.