Adjustable Exercise Device with Rotatable Weight Plates

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Solution Overview

Problem

Conventional adjustable dumbbells have complex structures that complicate manufacturing and increase costs, making them difficult to produce and use efficiently.

Innovation Solution

An adjustable exercise device with a compact structure featuring weight members with grooves and tongues, a handle device with rotatable plates and a detecting system that includes a central processing unit for weight detection and display, allowing easy attachment and detachment of weight members and providing user feedback on weight and calories burned.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional adjustable dumbbells use complex latch devices and multiple components for weight adjustment, then weight selection capability is improved, but device complexity and manufacturing cost increase significantly

Engineering Contradiction:

Improveweight selection capabilityVSAvoidstructure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The dumbbell is divided into modular components: a handle device, multiple selectable weight members (first, second, third weight members), and a supporting base. Each weight member can be independently attached or detached, allowing weight selection without complex integrated mechanisms. The segmentation enables simple attachment/detachment operations while maintaining versatility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The handle device serves multiple functions: it provides the gripping handle, acts as the weight carrier, and integrates the weight selection mechanism through rotatable plates. The supporting base also serves dual purposes by supporting the weight members during adjustment and providing structural stability during exercise. This multi-functionality reduces the need for separate specialized components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If conventional adjustable dumbbells include complicated latch devices for securing weight plates, then weight plate security is improved, but ease of manufacture and production speed deteriorate

Engineering Contradiction:

Improveweight plate securityVSAvoidmanufacturing simplicity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The complex latch device is extracted and replaced with a simpler mechanism using rotatable plates with engaging elements and tongues. The weight plate security function is maintained through the engaging elements that couple weight members to the handle, but the overall structure is simplified for easier manufacturing. The supporting base provides additional security during the adjustment process without requiring complex locking mechanisms.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If conventional adjustable dumbbells require moving latch devices relative to handle and weight plates for engagement, then weight adjustment capability is improved, but ease of operation deteriorates due to complex manipulation required

Engineering Contradiction:

Improveweight adjustment capabilityVSAvoidoperation simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of moving the latch device to engage with weight plates, the design inverts the approach: the weight members are designed with tongues that passively engage with the rotatable plates on the handle. The user simply rotates the plates to select weights, rather than manipulating complex latch mechanisms. This inversion simplifies the operation while maintaining full weight adjustment capability.

Inventive Principle:

Principle #13The other way round (Inversion)

4Adaptability or versatility

If conventional adjustable dumbbells use multiple weight plates and complex mounting mechanisms, then weight selection range is improved, but productivity and quick adjustment speed deteriorate

Engineering Contradiction:

Improveweight selection rangeVSAvoidadjustment speed

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The weight members are pre-positioned on the supporting base in specific arrangements (e.g., different positions or orientations) that correspond to different weight selections. The rotatable plates are pre-configured with engaging elements positioned to match the weight member configurations. This preliminary arrangement allows users to quickly select weights by simply rotating the plates to predetermined positions, rather than manually assembling weight plates during adjustment.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9895571B2Adjustable exercise device

Publication Date: 2018.02.20 BETO ENG & MARKETING

AI summary

An adjustable barbell or dumbbell or exercise device includes a handle device having a handle bar engageable into grooves of a number of weight members, a number of plates disposed on the handle bar and engageable between the weight members, and the plates each include an engaging element for engaging with the weight members and for anchoring a selected number of weight members to the handle bar, and a detecting device is attached to the handle device and includes a weight detector connected to a processing unit for sending weighing signals to the processing unit, and a displayer for displaying a total weight of the handle device and the weight members.