Suspension Mount With Inclined Precompression For Multi-Directional Elastic Force
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Solution Overview
Problem
Conventional suspension mounts using rubber materials struggle to provide sufficient elastic force in both axial and axially-perpendicular directions, leading to increased displacement and dimensionality issues, which limits their application and affects pedestrian protection.
Innovation Solution
A suspension mount utilizing an expandable resin elastomer with an inclined compressing mechanism that precompresses the elastomer in both axial and axially-perpendicular directions, allowing for controlled displacement and vibration management without enlarging the pressure receiving area or height dimension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If rubber material is used for elastic member, then elastic force is generated promptly against displacement, but the mount cannot provide sufficient elastic force in axially-perpendicular direction and requires larger dimensions
Solution Approach 1:
The patent changes the material parameter from conventional rubber to expandable resin elastomer, which has different elastic properties. This material can generate elastic force in multiple directions (axial and axially-perpendicular) more effectively than traditional rubber, resolving the contradiction between providing sufficient elastic force and maintaining compact dimensions.
Solution Approach 2:
The patent uses a composite structure combining expandable resin elastomer with metal components (inside clasp, outside clasp, case member). This composite approach leverages the elastic properties of the resin elastomer in multiple directions while using the structural integrity of metal parts, achieving both sufficient elastic force and compact dimensions.
2Force
If rubber material is used for elastic member, then elastic force is generated promptly, but displacement control in multiple directions is insufficient
Solution Approach 1:
By changing from rubber to expandable resin elastomer, the patent achieves improved displacement control in multiple directions. The resin elastomer's unique elastic properties allow it to control displacement not only in the axial direction but also in the axially-perpendicular direction, enhancing overall reliability.
3Device complexity
If conventional rubber elastic member is used, then simple structure is achieved, but manufacturing complexity increases due to cure-adhesion process
Solution Approach 1:
The patent extracts the cure-adhesion process from the manufacturing sequence by using expandable resin elastomer that can be attached without requiring cure-adhesion. This eliminates a complex manufacturing step while maintaining the simplicity of the overall structure.
Solution Approach 2:
The expandable resin elastomer serves as a replaceable component that can be attached and detached without complex bonding processes. This simplifies manufacturing and potential replacement, reducing overall manufacturing 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 enables the suspension mount to demonstrate a desired spring constant in all directions, ensuring effective displacement control and miniaturization while reducing manufacturing complexity and costs.
Implementation Method 1
an expandable resin elastomer which clamps an extended portion formed of an expandable resin and extended from the inside member
Implementation Method 2
a compressing means for compressing the expandable resin elastomer in an extending direction of the extended portion
Data Source
Figure 1
Figure 2(a)~2(c)
Figure 3
AI summary
A suspension mount 10 comprises an inner plate 11, an elastomer member 12, a lower case 13, and an upper plate 14. A plate 11 comprises an extended portion 11b extending from the circular-cylinder portion 11a. An incline portion 11c is integrally formed on the extended portion 11b and clamped by the elastomer member 12. The elastomer member 12 clamps the incline portion 11c of the extended portion 11b from the outer periphery side. Thereby, when the plate 14 is fixed in a status that the plate 11 and the elastomer member 12 are contained in the case 13, the input in the axial direction of the mount 10 will be decomposed into a compressive load in an axial direction and a compressive load in an axially-perpendicular direction by the incline portion 11c. Therefore, the elastomer member 12 is held in a status that it is precompressed in the axial direction and the axially-perpendicular direction.