Adjustable Dumbbell With Spring-Biased Latch Mechanism
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Solution Overview
Problem
Conventional adjustable dumbbells have complex structures that are difficult to manufacture and costly, making them inefficient for quick and easy weight adjustments and user operation.
Innovation Solution
The design features weight members with pivotally connected arms, a handle device with rotatable plates and a spring-biased latch system, allowing for easy attachment and detachment of weight plates, and a compact structure that simplifies the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional adjustable dumbbells use traditional latch devices and multiple weight plates, then weight adjustment functionality is achieved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The weight carrier is divided into multiple slots that can independently accommodate different weight members. Each slot operates independently, allowing selective attachment and detachment of weight members without affecting other slots, thereby simplifying the overall structure while maintaining adjustment functionality.
Solution Approach 2:
The weight carrier handle serves multiple functions: it acts as the main structural component, provides multiple attachment slots for different weight members, incorporates the latch mechanism directly into its structure, and functions as the grip for the user. This multi-functionality eliminates the need for separate components, reducing device complexity.
2Reliability
If conventional adjustable dumbbells include complete latch devices and supporting bases, then weight members can be securely held, but manufacturing procedures become complicated and costly
Solution Approach 1:
The latch mechanism is merged directly into the weight carrier handle structure. The latch members are integrated as part of the handle itself rather than being separate components, which simplifies manufacturing by reducing the number of parts that need to be produced and assembled, while still providing secure retention of weight members.
Solution Approach 2:
The complex supporting base structure found in conventional dumbbells is extracted and replaced with a simplified weight carrier that integrates all necessary functions. The latch mechanism is taken out as a separate complex assembly and instead incorporated directly into the handle structure, reducing manufacturing complexity.
3Reliability
If conventional adjustable dumbbells use complex latch mechanisms, then weight members can be secured, but operation speed and ease of adjustment decrease
Solution Approach 1:
The latch members are designed to be dynamically controllable by the user through simple manual manipulation. The latch can be quickly engaged or disengaged by pushing or pulling the weight member, allowing for rapid adjustment while maintaining secure holding when engaged. This dynamic design enables fast operation without compromising reliability.
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
Enables quick and easy adjustment of weight, reduces manufacturing complexity and costs, and facilitates user-friendly operation by allowing seamless attachment and detachment of weight members.
Implementation Method 1
a spring-biased latch system, allowing for easy attachment and detachment of weight plates
Implementation Method 2
weight members with pivotally connected arms
Implementation Method 3
two arms pivotally connected together with a pivot pin for allowing the arms to be pivoted and moved toward or away from each other
Data Source
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, the weight members each having two pivotal arms, a hand grip disposed on the handle bar, and a number of plates disposed on the handle bar and rotated in concert with the hand grip, the plates are engageable between the weight members, and the plates each include an engaging element for engaging with the weight members and for moving the arms toward each other to engage with the handle device when the plates and the hand grip are rotated relative to the handle bar, and for anchoring a selected number of weight members to the handle device with the plates.