Multi-Link Dumbbell with Rotational Joints for Wrist Safety

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Solution Overview

Problem

Existing dumbbells and kettlebells fail to provide a versatile and ergonomic design that minimizes injury risk while maximizing exercise potential, as they are not optimized for dynamic movements, leading to pain and injury, especially in the wrists during kettlebell exercises, and lack the stability and control needed for effective workouts.

Innovation Solution

A dumbbell design featuring multiple linking members, including a central and two lateral linking members, strategically positioned and shaped to reduce wrist impact and allow for both traditional dumbbell and kettlebell usage, providing ergonomic handling and versatile functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a traditional dumbbell design with a single rigid bar is used, then stability and control are improved, but the ability to perform dynamic kettlebell movements is lost

Engineering Contradiction:

Improvestability and controlVSAvoidability to perform dynamic movements

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The single rigid bar of a traditional dumbbell is segmented into multiple linking members (first linking member, second linking member, third linking member) that can move relative to each other. This segmentation allows the device to maintain stability when needed while enabling dynamic movements by allowing the linking members to articulate and change configuration during exercise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The linking members are designed with rotational joints that allow them to move dynamically relative to each other. The first linking member rotates relative to the second linking member, and the second linking member rotates relative to the third linking member, enabling the device to adapt its configuration for different exercise types while maintaining control.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a kettlebell design with a single handle is used, then dynamic movement capability is improved, but wrist impact and injury risk increase

Engineering Contradiction:

Improvedynamic movement capabilityVSAvoidwrist impact and injury risk

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The single handle of a kettlebell is segmented into multiple linking members with rotational joints. This segmentation distributes the impact forces across multiple articulation points rather than concentrating them at a single handle-wrist interface, reducing wrist impact and injury risk while maintaining dynamic movement capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The rotational joints between linking members act as intermediaries that absorb and redistribute impact forces during dynamic movements. These joints allow controlled motion that reduces the transmission of harmful forces to the user's wrist while maintaining the ability to perform kettlebell-style exercises.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of manufacture

If a single-piece rigid design is used, then manufacturing simplicity is improved, but ergonomic adaptability for different exercise types deteriorates

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidergonomic adaptability

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

The device is divided into separate linking members that can be manufactured independently using standard machining processes, then assembled through rotational joints. This segmentation maintains manufacturing simplicity while enabling ergonomic adaptability for different exercise types through the articulated configuration of the linking members.

Inventive Principle:

Principle #1Segmentation

4Adaptability or versatility

If multiple equipment sets (dumbbells and kettlebells) are used, then exercise versatility is improved, but device complexity and space requirements increase

Engineering Contradiction:

Improveexercise versatilityVSAvoidnumber of equipment sets

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device is designed as a universal equipment that can function as both a traditional dumbbell and a kettlebell through the articulation of its linking members. By configuring the linking members in different positions, users can perform a wide range of exercises that traditionally required separate dumbbell and kettlebell sets, reducing overall equipment complexity and space requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240342541A1Dumbbell having multiple linking members to connect two spaced apart weight members

Publication Date: 2024.10.17 DUHAMEL FRANCOIS

AI summary

The present invention relates to a dumbbell designed to enhance ergonomic handling and versatility in physical training. The dumbbell comprises two spaced-apart weight members connected by multiple linking members, which include a central linking member and two lateral linking members. The central linking member is oriented diagonally to provide an ergonomic grip and reduce the risk of wrist injuries, while the lateral linking members feature an arcuate shape to avoid wrist impact during dynamic exercises. This configuration allows the dumbbell to be used for a variety of exercises traditionally performed with both dumbbells and kettlebells, thereby offering a versatile exercise tool that accommodates a wide range of fitness routines.