Embedded Mark on Bicycle Wheel Rim Surface

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Solution Overview

Problem

Conventional marking processes for bicycle wheel rims are complex, time-consuming, and result in marks that protrude beyond the surface, leading to potential deformation and peeling issues.

Innovation Solution

A marked wheel rim with a non-protrusive embedded mark on its outer surface, manufactured using a mold process where the mark is combined with the rim body using a binding material, ensuring a smooth and stable integration without additional post-processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If water transfer printing is used to process marks on wheel rim, then marks can be applied to the wheel rim surface, but the marking process becomes complicated and time-consuming

Engineering Contradiction:

Improvemarking process simplicityVSAvoidmarking process time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The mark is embedded in the wheel rim during the molding process itself, rather than applying it afterwards. The mold includes a marking portion that forms the mark as an integral part of the wheel rim, eliminating the need for separate marking steps like water transfer printing, softening stickers, adhering, and drying

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The marking operation is merged with the wheel rim manufacturing process. The mold simultaneously forms both the wheel rim structure and the embedded mark, combining two separate operations (molding and marking) into one integrated process

Inventive Principle:

Principle #5Merging (Combining)

2Manufacturing precision

If water transfer printing is used to process marks on wheel rim, then marks can be applied to the wheel rim surface, but the marks protrude beyond the surface

Engineering Contradiction:

Improvemark surface flushnessVSAvoidmark protrusion

Core Design Contradiction:

Manufacturing precisionVSShape

Solution Approach 1:

The mark is formed at the same time as the wheel rim during molding, ensuring the mark surface is flush with the wheel rim outer surface. The marking portion in the mold creates the mark with precise depth control, preventing any protrusion that would occur with post-application methods

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mold includes a specific marking portion with controlled depth and geometry that creates a localized recess or flush surface for the mark. This localized feature ensures the mark integrates seamlessly with the wheel rim surface while maintaining the overall wheel rim shape

Inventive Principle:

Principle #3Local quality

3Device complexity

If conventional marking processes are used, then marks can be applied to wheel rim, but additional post-processing steps are required

Engineering Contradiction:

Improvemarking process stepsVSAvoidmanufacturing efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The marking operation is combined with the wheel rim molding process into a single integrated operation. The mold simultaneously creates the wheel rim and embeds the mark, eliminating multiple separate steps including surface preparation, sticker application, air removal, wiping, and drying that characterize conventional marking processes

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11230141B2Marked wheel rim and method for manufacturing the same

Publication Date: 2022.01.25 MARSHAL INDUSTRIAL CORP

AI summary

A marked wheel rim is provided, including: a rim body and a mark. The rim body includes an outer surface. The mark is embedded on the outer surface and includes an outer peripheral edge adjacent to the rim body. The outer peripheral edge is non-protrusive beyond the outer surface. A method for manufacturing the marked wheel rim is further provided.