Bicycle Seatpost Reinforcement for Accessory Mounting

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Solution Overview

Problem

Bicycle seatposts with insert holes or recesses for accessories suffer from structural weakness, posing safety risks due to reduced structural integrity.

Innovation Solution

A bicycle seatpost design incorporating a reinforcing member within the inner surface to maintain structural strength, featuring various cross-sectional shapes and extensions to accommodate accessories without compromising strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an insert hole or recess portion is created in the seatpost for accessory installation, then the adaptability for mounting bicycle accessories is improved, but the structural strength of the seatpost deteriorates

Engineering Contradiction:

Improvemounting capability for bicycle accessoriesVSAvoidstructural strength of seatpost

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The seatpost is segmented into functional zones: the through-hole for accessory mounting and the reinforcing member for structural support. This segmentation allows the opening function and strengthening function to be spatially separated yet structurally integrated, resolving the contradiction between adaptability and strength

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The reinforcing member is nested within the seatpost body, positioned inside the through-hole region. This nesting approach allows the reinforcing member to occupy the internal space without adding external volume, providing structural reinforcement while maintaining the opening for accessory installation

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of operation

If a through-hole is created in the seatpost body, then the ease of operation for accessory installation is improved, but the reliability of the seatpost structure deteriorates

Engineering Contradiction:

Improveease of accessory installationVSAvoidstructural integrity of seatpost

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The reinforcing member is strategically positioned at the critical location where the through-hole creates structural weakness. By concentrating reinforcement material at this specific location rather than uniformly throughout the seatpost, the local quality is enhanced to compensate for the opening, maintaining reliability while preserving ease of operation

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12454323B2Bicycle seatpost capable of mounting with bicycle accessory

Publication Date: 2025.10.28 J D COMPONENTS CO LTD

AI summary

A bicycle seatpost includes a seatpost body and a reinforcing member. The seatpost body has an opening through inner and outer surfaces thereof. The reinforcing member is fixed to the inner surface of the seatpost and has a part corresponding to the opening, such that an installation space is formed between the reinforcing member and the opening for installation of a bicycle accessory. As such, the bicycle seatpost of the present invention uses the opening to install the bicycle accessory (such as a lamp, rearview lens, rear bag, or bottle cage), and uses the reinforcing member to make the seatpost body maintain sufficient structural strength, such that the seatpost body will not weaken its structure due to the opening.