Bicycle Dropout Integrated Kickstand Base

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Solution Overview

Problem

Existing bicycle frames do not efficiently integrate a bicycle stand, leading to aesthetic and functional issues such as protrusions, potential entanglements, and reduced stability, especially when the stand is not in use.

Innovation Solution

The bicycle frame incorporates a dropout with an integrated base that serves as both a structural component and a mounting point for the bicycle stand, featuring a guide contour with conical troughs for secure positioning of the support, allowing for a compact design and enhanced stability without additional parts or assembly steps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the base is mounted separately on the bicycle frame (e.g., on chainstay), then the bicycle stand can be installed, but it creates protrusions that may entangle body parts or clothing and reduce aesthetic appearance

Engineering Contradiction:

Improvebicycle stand installationVSAvoidentanglement risk and aesthetic degradation

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The base of the bicycle stand is merged with the dropout, forming a single integrated component. The base is designed as part of the dropout structure, eliminating the need for separate mounting and removing protrusions that could entangle clothing or affect aesthetics.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The dropout is given multiple functions: it serves both as the traditional rear axle mounting component and as the base for the bicycle stand. This multi-functionality eliminates the need for additional components and simplifies the overall structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a separate base is added to the bicycle frame, then the bicycle stand can be mounted, but the number of parts and assembly steps increases

Engineering Contradiction:

Improvebicycle stand mounting capabilityVSAvoidnumber of parts and assembly steps

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The base and dropout are combined into a single component, reducing the total number of parts. The base is formed as an integral part of the dropout during the same manufacturing process, eliminating separate assembly steps.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The dropout serves dual purposes: traditional rear axle mounting and bicycle stand base. This multi-functionality reduces component count and simplifies assembly procedures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If the base is positioned closer to the pedals and rider's feet, then it may be more accessible, but it increases the risk of collisions with feet, shoelaces, and trouser legs

Engineering Contradiction:

Improvekickstand accessibilityVSAvoidcollision risk with rider's body parts

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The base is repositioned from a location near the pedals (horizontal proximity to rider's feet) to the dropout (vertical and spatial separation). This dimensional change moves the base away from the hazard zone while maintaining kickstand functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Stability of the object's composition

If the dropout is made from angled sheet material with bent sections, then the bicycle stability is improved through larger contact area, but the manufacturing complexity increases

Engineering Contradiction:

Improvebicycle stabilityVSAvoiddropout manufacturing

Core Design Contradiction:

Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The dropout geometry is changed from a simple straight form to an angled configuration with bent sections. This parameter change optimizes the contact area and stability while the bending process remains a standard manufacturing operation for sheet metal components.

Inventive Principle:

Principle #35Parameter changes

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

This configuration provides increased stability and reduced protrusions, minimizing the risk of entanglements and collisions, while allowing for a more compact and aesthetically pleasing design, especially when the stand is not in use, and enabling greater design freedom for components like electrical actuation systems.

Implementation Method 1

a spring-loaded pressure piece of a support of the bicycle stand rests in either the stationary position or the driving position

Methodology Applied

Scientific EffectSpring force: Spring

Data Source

PatentEP3590802B1Bicycle with kickstand and dropout of a bicycle frame

Publication Date: 2022.02.09 HEBIE

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AI summary

In a bicycle stand (1) comprising a first element designated as a base (2), which is designed as an integral part of a bicycle frame, and a second element in the form of a support (3) pivotably held on the base (2), which is movable about a pivot axis (4) between two end positions designated as the standing position and the driving position, wherein one element has a pressure piece (7) with which it bears against a guide contour (8) of the other element under spring pressure and bears against different points of the guide contour (8) during the pivoting movement, the invention proposes that the base (2) be designed as part of a dropout.