Adjustable Dumbbell with Expandable Buckle and Segmented Grip Rod
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dumbbells are time-consuming and inconvenient to adjust weight, requiring detachment of limiting elements, removal and reattachment of counterweight blocks, and limiting flexibility in attachment positions.
Innovation Solution
A dumbbell design featuring a grip rod with connection segments and counterweight blocks that have expandable engaging channels and buckles, allowing for easy attachment and detachment from the side and adjustable positioning, enabling quick and versatile weight adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional limiting elements are used to hold counterweight blocks on the grip rod, then the counterweight blocks are securely held, but the weight adjustment process becomes time-consuming and inconvenient
Solution Approach 1:
The connection segment is divided into multiple connection recesses positioned at different locations, allowing counterweight blocks to be independently attached or detached without affecting other blocks. The buckle mechanism is segmented into a body and a detachable buckle component, enabling quick release without removing the entire counterweight block
Solution Approach 2:
The buckle is extracted as a separate detachable component from the counterweight block body. This allows the buckle to be quickly removed from the connection recess, enabling rapid weight adjustment without detaching the entire counterweight block from the grip rod
2Adaptability or versatility
If counterweight blocks are attached from outside to inside on conventional dumbbells, then the structure is simple, but the attachment positions cannot be chosen freely reducing versatility
Solution Approach 1:
The connection segment is divided into multiple discrete connection recesses at different positions along the grip rod. Each recess can independently accommodate a counterweight block, providing multiple attachment position options while maintaining a relatively simple overall structure
Solution Approach 2:
The connection recess design allows counterweight blocks to be attached at multiple different positions on the grip rod, providing universal attachment capability. The same buckle mechanism can engage with any connection recess, enabling flexible weight configuration
3Ease of operation
If multiple limiting elements are used to secure counterweight blocks, then the blocks are firmly held, but the adjustment process becomes complicated requiring detachment and reattachment of limiting elements
Solution Approach 1:
The limiting function is extracted from a separate element and integrated into the buckle mechanism itself. The buckle acts as both the securing mechanism and the limiting element, eliminating the need for separate limiting elements and simplifying the adjustment process
Solution Approach 2:
The buckle combines multiple functions: it secures the counterweight block to the grip rod, acts as a limiting element to prevent over-travel, and provides a quick-release mechanism. This merging of functions reduces the number of components and simplifies the adjustment operation
Data Source
AI summary
A dumbbell has a grip rod and multiple counterweight blocks. The grip rod has two connection segments each having multiple baffles to define multiple connection recesses between the baffles. The counterweight blocks are engaged respectively with the connection recesses. Each counterweight block has a body and a buckle. The body has an engaging channel extending from a center to an edge of the body and being expandable. The engaging channel has an opening and two protrusions to form an engaging space for being mounted around one of the connection segments. The buckle has a first end and a second end. The first end is connected pivotally to the body and at a position on one of two sides of the engaging channel. The second end is connected detachably with the body at a position on the other one of the two sides of the engaging channel.