Carrier Spring Receiving Arrangement for Suspension Strut
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Solution Overview
Problem
Existing receiving arrangements for the lower end of a carrier spring on a damper tube of a suspension strut in vehicles do not provide reliable support, especially when the suspension strut is not under load, and can lead to tilt moments during compression, requiring additional radial bearing components to absorb these forces effectively.
Innovation Solution
A plain bearing unit with both axial and radial support is designed using upper and lower bearing rings that can slide on each other, allowing the damper tube to twist relative to the carrier spring, featuring a compact and simple configuration with a small diameter to minimize friction and include a spring seat and supporting ring for enhanced support and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a large-diameter roller bearing is used to receive axial forces and avoid tilting of the carrier spring, then the carrier spring tilting is reduced, but the device complexity increases and additional radial bearing components are required
Solution Approach 1:
The patent combines the axial bearing and radial bearing functions into a single integrated bearing unit. The bearing unit comprises a bearing cup and bearing ball that work together to provide both axial force reception and radial force support, eliminating the need for separate large-diameter roller bearings and additional radial bearing components.
Solution Approach 2:
The bearing unit is designed to perform multiple functions simultaneously: it receives axial forces from the carrier spring, provides radial support to prevent tilting, and allows rotational movement. This multi-functional design replaces what would traditionally require multiple specialized components.
2Reliability
If additional radial bearing components are added to absorb tilt moments during compression, then the reliability under load is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The bearing unit integrates radial and axial bearing capabilities into a single compact structure. The bearing cup and bearing ball combination provides both radial support for tilt moment absorption and axial force reception, eliminating the need for additional separate radial bearing components.
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 provides reliable support to the carrier spring, reduces friction and breakaway forces, and improves steering feedback by allowing the damper tube to twist relative to the vehicle superstructure, while maintaining a compact and cost-effective design.
Implementation Method 1
A plain bearing unit with both axial and radial support is designed using upper and lower bearing rings that can slide on each other, allowing the damper tube to twist relative to the carrier spring, featuring a compact and simple configuration with a small diameter to minimize friction
Data Source
AI summary
A receiving arrangement may be utilized by a lower end of a carrier spring on a damper tube of a shock absorber of a suspension strut, in particular for a vehicle. The receiving arrangement may include a bearing unit by way of which the damper tube can twist relative to the carrier spring about a longitudinal axis of the suspension strut. The bearing unit may include an upper bearing ring and a lower bearing ring, which bearing rings may be configured so they can slide on each other to form an axial bearing and a radial bearing between the carrier spring and the damper tube.