Adjustable Freewheel Wheel for Switching Spinning and Cycling Modes

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Solution Overview

Problem

Existing exercise bicycles with non-freewheel and freewheel structures require separate purchases, increasing the cost for users who need to alternate between spinning and cycling exercises.

Innovation Solution

A freewheel adjustable wheel system that allows users to selectively engage or disengage the freewheel function by operating a second power transmission part, enabling the same exercise bicycle to function as both a spinning and cycling machine.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a non-freewheel structure is applied for spinning exercise, then power transmission in both forward and reverse directions is enabled, but the equipment cannot be used for cycling exercise requiring freewheel function

Engineering Contradiction:

Improveexercise mode compatibilityVSAvoidpower transmission structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The power transmission structure is made dynamically adjustable through a shift mechanism that can switch between freewheel and non-freewheel modes. The second power transmission part can be selectively engaged or disengaged from the rotation gear part, allowing the system to adapt its power transmission characteristics based on the required exercise mode.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The exercise bicycle is designed with a universal power transmission system that can perform both spinning exercise (requiring bidirectional power transmission) and cycling exercise (requiring unidirectional power transmission with freewheel). By incorporating the shift mechanism with the second power transmission part, a single device can serve multiple exercise purposes.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate spinning bicycle and indoor bicycle are purchased to cover both exercise modes, then exercise versatility is achieved, but purchase cost increases

Engineering Contradiction:

Improveexercise mode coverageVSAvoidnumber of exercise equipment

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The invention creates a universal exercise bicycle that combines both spinning and cycling exercise capabilities in a single device. The power transmission system is designed to accommodate both exercise modes through the shift mechanism, eliminating the need for users to purchase separate spinning bicycles and indoor bicycles.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The invention merges the functions of two separate exercise bicycles (spinning and indoor cycling) into a single unified device. By integrating the shift mechanism that controls engagement of the second power transmission part, the system combines the capabilities of both exercise types in one piece of equipment.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If a freewheel structure is applied for cycling exercise, then unidirectional power transmission is achieved, but the equipment cannot perform spinning exercise requiring reverse power transmission

Engineering Contradiction:

Improvecycling exercise capabilityVSAvoidmode switching operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system transitions from a static power transmission structure to a dynamic one that can change its characteristics. The shift mechanism enables the second power transmission part to be selectively engaged or disengaged, allowing the power transmission system to adapt its behavior based on the selected exercise mode.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The shift mechanism acts as an intermediary that controls the engagement between the second power transmission part and the rotation gear part. This intermediary component enables smooth transitions between freewheel and non-freewheel modes, making the mode switching operation intuitive and easy to perform.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Reliability

If different power transmission structures are used for spinning and indoor bicycles, then each exercise mode is optimized, but equipment compatibility and portability are reduced

Engineering Contradiction:

Improveexercise mode optimizationVSAvoidpower transmission system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Instead of having separate optimized systems for spinning and cycling, the invention creates a single dynamic power transmission system that can be adjusted to optimize for either mode. The shift mechanism allows the second power transmission part to be engaged for cycling optimization or disengaged for spinning optimization, all within one unified system.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12220613B2Freewheel adjustable wheel and exercise bicycle including same

Publication Date: 2025.02.11 LG ELECTRONICS INC

AI summary

The present invention relates to a freewheel adjustable wheel and an exercise bicycle including the same and. More specifically, may comprise a rotation gear part which rotates together with a pulley fixed to the outer side thereof and has a circular gear formed along the outer circumference thereof; a case part for rotatably supporting the rotation gear part; a first power transmission part for transmitting power which has been transmitted to the rotation gear part to the case part when the rotation gear part rotates in the normal direction; and a second power transmission part for transmitting power which has been transmitted to the rotation gear part to the case part when the rotation gear part rotates in the reverse direction.