Suspension Spring Seat Layout for Stable Coil Spring Support
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Solution Overview
Problem
Existing suspension designs may apply uneven loads to the coil spring due to the positional relationship between the spring seat and protrusions, leading to unintentional reaction forces and unexpected lateral forces in the shock absorber, causing unsmooth sliding and changes in steering force.
Innovation Solution
The suspension incorporates a spring seat with three strongly pressing parts arranged to apply higher contact pressures, with the point of separation between them positioned at the region with the largest opening angle about the axial center of the shock absorber, ensuring even load distribution and preventing excessive contact pressures on individual parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three protrusions are provided on the spring contact surface to support the coil spring, then the coil spring can be supported, but uneven loads are applied to the protrusions due to the positional relationship between the spring seat and protrusions, leading to unintentional reaction forces and lateral forces in the shock absorber
Solution Approach 1:
The invention applies local quality by providing three strongly pressing parts with higher contact pressure at specific locations on the spring contact surface, rather than uniform pressure distribution. This localized pressure concentration at strategically positioned protrusions ensures even load distribution across the coil spring while preventing unintentional reaction forces and lateral forces in the shock absorber.
Solution Approach 2:
The invention implements preliminary action by carefully positioning the three strongly pressing parts and the point of separation before the coil spring is installed. The point of separation is specifically positioned at the region with the largest opening angle about the axial center, which pre-establishes the correct load distribution pattern and prevents harmful forces before the suspension operates.
2Reliability
If the point of separation is not positioned at the region with the largest opening angle, then the coil spring may contact the spring seat at suboptimal locations, but positioning it correctly requires precise geometric calculation and manufacturing
Solution Approach 1:
The invention applies asymmetry by positioning the point of separation at the region with the largest opening angle about the axial center, which is inherently an asymmetric position. This asymmetric positioning ensures that the coil spring contacts the spring seat at the optimal location, promoting smooth operation of the shock absorber while the three strongly pressing parts are arranged to compensate for the asymmetric geometry.
Solution Approach 2:
The invention transitions from considering only radial positioning to incorporating angular positioning in the vertical dimension. By defining the point of separation at the region with the largest opening angle about the axial center, the invention adds an angular dimension to the positioning criteria, ensuring optimal contact geometry that prevents harmful forces while maintaining manufacturability.
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 configuration stabilizes the coil spring support, preventing unintentional reaction forces and reducing the occurrence of lateral forces in the shock absorber, thereby minimizing sliding resistance and steering force changes.
Implementation Method 1
The coil spring 2 is configured to elastically receive vertical movement of a wheel relative to a vehicle body of the vehicle
Implementation Method 2
The shock absorber 3 is configured to damp the vertical movement
Data Source
AI summary
A suspension includes a coil spring, a shock absorber, a spring seat, and at least three strongly pressing parts. The coil spring elastically receives vertical movement of a wheel relative to a vehicle body. The shock absorber damps the vertical movement. The spring seat is provided in the shock absorber. The sprint seat supports an axial end of the coil spring. The coil spring is in direct or indirect contact with the spring seat over a predetermined distance from an end to a point of separation of the coil spring. The strongly pressing parts are provided in the spring seat. The strongly pressing parts apply contact pressures higher than contact pressure applied by other part, to the coil spring. The point of separation is disposed at a region that is between the strongly pressing parts and has the largest opening angle about an axial center of the shock absorber.