Shock Absorber Sensor Coupling for Axial Load Isolation
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Solution Overview
Problem
Existing shock absorbers for vehicles apply significant loads to sensors due to displacement, which can lead to reduced accuracy and increased maintenance needs.
Innovation Solution
A shock absorber design that incorporates a coupling member between the receiving member and the sensor, allowing for movement in both the axial and circumferential directions, thereby reducing the load on the sensor and enhancing its positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is directly mounted on the receiving member to detect vehicle height displacement, then the displacement detection function is achieved, but significant loads are applied to the sensor during shock absorber operation
Solution Approach 1:
A coupling member is introduced as an intermediary between the receiving member and the sensor. This coupling member allows relative movement in both the axial direction (absorbing expansion/contraction forces) and the circumferential direction (absorbing rotational forces), thereby protecting the sensor from significant loads while maintaining detection functionality
Solution Approach 2:
The coupling member is designed to be dynamic rather than rigid, allowing it to move relative to both the receiving member and the sensor. This dynamic characteristic enables the system to accommodate forces and movements without transmitting them directly to the sensor, resolving the contradiction between detection accuracy and sensor protection
2Device complexity
If the sensor is rigidly fixed to the receiving member, then the structure is simple, but the sensor cannot withstand the expansion and contraction forces during operation
Solution Approach 1:
The coupling member serves as a mediator that provides both mechanical connection and movement accommodation. While it adds a component to the structure, it significantly enhances reliability by protecting the sensor from damaging forces during shock absorber operation
Solution Approach 2:
The coupling member provides different movement capabilities in different directions: it allows axial movement to accommodate expansion/contraction while maintaining circumferential connection stability. This directional differentiation of movement properties resolves the contradiction between structural simplicity and operational reliability
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 design effectively reduces the load on the sensor, improving its accuracy and extending the maintenance life of the shock absorber by allowing for more precise detection of vehicle height displacement and easier maintenance.
Implementation Method 1
the sensor includes a coil portion formed by winding a conductive wire, a movement of the coil portion being restricted, and a core portion being movable along the axis together with the coupling member, at least a part of the core portion facing an inner side of the coil portion
Data Source
AI summary
A shock absorber includes a cylinder, a spring, a receiving member, a sensor, and a coupling member. The sensor includes a coil portion, and a core portion. The coupling member is formed integrally with the core portion. A recessed portion is formed in one of the receiving member and the coupling member, a protruding portion facing the recessed portion is formed in the other one of the receiving member and the coupling member, and the receiving member and the coupling member are coupled to each other via the recessed portion and the protruding portion.