Steering Spindle Anchor Pin for Hollow Bore Reinforcement
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Solution Overview
Problem
The integrity of motorcycle steering spindle assemblies can be compromised, leading to handlebar instability and potential spindle rod failure, especially in aluminum or lightweight metal constructions with hollow interior bores.
Innovation Solution
An anchor pin is designed to fit within the internal bore of a spindle rod, providing additional structural integrity and reinforcement. The anchor pin features an elongated cylindrical shaft with recessed rings and resilient o-rings, ensuring a secure fit and minimizing movement within the bore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the spindle rod is made of aluminum or lightweight metal with a hollow interior bore, then the weight of the steering assembly is reduced, but the structural integrity and reliability of the spindle rod deteriorate
Solution Approach 1:
The patent combines lightweight aluminum spindle rod material with a solid steel anchor pin inserted into the hollow bore, creating a composite structure that leverages the weight advantages of aluminum while incorporating the strength advantages of steel to prevent catastrophic failure
Solution Approach 2:
The solid anchor pin is nested within the hollow interior bore of the aluminum spindle rod, creating a reinforced core structure that maintains the external lightweight geometry while providing internal structural support along the critical threaded section
2Strength
If the upper steering crown nut is over torqued, then the steering bridge is securely fastened, but the intermediate threads of the spindle rod are deformed or damaged
Solution Approach 1:
The solid anchor pin is installed beforehand in the hollow bore to reinforce the intermediate threaded section, creating a protective cushion that prevents thread deformation or damage when the upper steering crown nut is torqued down
3Quantity of substance
If the spindle rod is designed with a hollow interior bore, then material usage is reduced and weight is decreased, but the susceptibility to failure and damage increases
Solution Approach 1:
A solid anchor pin is nested within the hollow bore of the spindle rod, maintaining the material reduction benefits of the hollow design while protecting against failure by providing a solid core along the critical threaded section
Solution Approach 2:
The patent creates a composite structure combining the hollow aluminum spindle rod with a solid steel anchor pin, optimizing both material efficiency and failure resistance
Data Source
AI summary
An anchor pin that is precisely structured and machined to fit within a internal bore of a spindle rod of a motorcycle steering spindle assembly is presented herein. The anchor pin is configured and intended to provide additional structural integrity to and reinforce the spindle rod in the event of damage thereto or failure thereof. Accordingly, the anchor pin includes an elongated cylindrical shaft with a flared head disposed at one end thereof. The elongated cylindrical shaft includes at least one recessed ring disposed along a length thereof, and at least one resilient o-ring seated therein.