Stroke Sensor Shock Absorber Structure for Bending Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The durability of shock absorbers in straddle type vehicles, particularly during motocross, is compromised due to increased bending forces acting on the conductor member, leading to potential damage and reduced performance of the stroke sensor.
Innovation Solution
Incorporating elastic bodies adjacent to the conductor member to absorb bending forces and reducing contact between the conductor member and penetrated members, thereby enhancing the shock absorber's durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the conductor member is made to penetrate through the piston to detect stroke displacement, then the measurement precision of the stroke sensor is improved, but the bending force during braking operations causes the conductor member to bend and contact the penetrated member, reducing the reliability of the stroke sensor
Solution Approach 1:
A resin layer is introduced as an intermediary between the conductor member and the penetrated member (piston). This resin layer prevents direct contact between the conductor member and the piston, eliminating wear and damage while allowing the conductor member to maintain its penetrating configuration for accurate stroke detection. The intermediary layer resolves the contradiction by protecting the conductor member from bending-induced contact without compromising the sensor's measurement capability.
2Device complexity
If the conductor member extends through the piston for stroke detection, then the device complexity is reduced, but the contact between the bent conductor member and penetrated member increases wear and reduces the durability of the stroke sensor
Solution Approach 1:
The resin layer serves as a protective intermediary that prevents direct contact and wear between the conductor member and the piston. This simple additive solution maintains the straightforward penetrating configuration of the conductor member while significantly improving durability by eliminating direct mechanical contact and associated wear during braking operations.
Solution Approach 2:
The material properties of the interface between the conductor member and piston are changed by introducing a resin layer. This parameter change transforms the direct metal-to-metal contact into a metal-to-resin contact, which reduces friction and wear, thereby extending the durability of the stroke sensor without complicating the overall structure.
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 implementation of elastic bodies allows the conductor member to resist bending and minimizes direct contact, resulting in a shock absorber with improved durability and sustained performance under high-stress conditions.
Implementation Method 1
a first elastic body made of an elastic material and provided adjacent to the conductor member on an outer side of an outer peripheral surface of the conductor member
Data Source
AI summary
A shock absorber includes: a piston which is connected to an upper end of a rod by a fixing member and moves forward and backward in a cylinder; a conductor member which penetrates the piston from an upper end of an outer tube and extends into the rod; a coil which is provided in the rod so as to be capable of detecting a displacement of the conductor member with respect to the rod; an elastic body made of a resin material which is provided adjacent to the conductor member and on an outer side of an outer peripheral surface of the conductor member; and a support portion which supports an outer peripheral surface of the elastic body so as to restrict movement of the elastic body in a direction intersecting a center line of the conductor member.