Adjustable Dumbbell With Rotating Grip And Sliding Connectors
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Solution Overview
Problem
Existing adjustable dumbbells require cumbersome disassembly and assembly of dumbbell pieces to adjust weight, making operation inconvenient.
Innovation Solution
An adjustable dumbbell design featuring a dumbbell assembly with connecting discs, gear blocks, and an elastic component, allowing weight adjustment by rotating the handle grip to different angles, which engages or disengages connecting blocks with dumbbell pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional adjustment method using compression nuts is used, then the dumbbell pieces can be locked securely, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The connecting block is designed to slide dynamically along the positioning groove, transitioning between extended (disengaged) and retracted (engaged) positions. This dynamic mechanism replaces the static compression nut system, allowing users to adjust weight by simply moving the connecting block along the groove rather than repeatedly assembling and disassembling components with tools.
Solution Approach 2:
The elastic component provides automatic engagement and disengagement functionality. When the connecting block is moved to the engaged position, the elastic force automatically secures it against the dumbbell piece without requiring additional locking tools or complex assembly steps, making the system self-servicing and significantly improving operational convenience.
2Adaptability or versatility
If multiple connecting blocks are used to allow different weight configurations, then weight adjustability is improved, but the device complexity increases
Solution Approach 1:
Each connecting block is designed as a universal component that can engage with any dumbbell piece through the standardized positioning groove interface. The same connecting block structure serves multiple functions: it can be positioned at different locations along the groove to select different weight combinations, and multiple connecting blocks can work independently or in combination. This multi-functional design provides versatile weight adjustment without requiring complex specialized components for each configuration.
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 convenient weight adjustment with fewer operation steps, providing a stable and safe user experience by securely connecting and disconnecting dumbbell pieces based on handle grip rotation.
Implementation Method 1
an elastic component for driving the connecting block to shrink inward
Data Source
AI summary
An adjustable dumbbell, comprising a dumbbell assembly, a dumbbell seat and dumbbell pieces, the dumbbell assembly comprises a dumbbell bar and connecting discs, which are provided with a positioning groove and a connecting block slidingly connected in the positioning groove, and the connecting disc is provided with an elastic component; the dumbbell assembly comprises a handle grip and gear blocks, and the glove and the gear block are fixed circumferentially, and the gear block has an outwardly pushing part and an inwardly shrinking part in the circumferential direction; the dumbbell piece is provided with a connecting groove, when the connecting block abuts against the shrinking part, the connecting block is separated from the connecting groove; the connecting block abuts against the pushing part, the connecting block is snapped into the connecting groove; when the connecting block abuts against the shrinking part, the connecting block is separated from the connecting groove.