Dumbbell Weight Plate Locking Mechanism for Quick Weight Adjustment
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Solution Overview
Problem
Traditional dumbbells have complicated connection structures, large weight spans, and are prone to failure, making them difficult for beginners to use and not user-friendly.
Innovation Solution
A locking mechanism for weight plates featuring an accommodating disk with limiting blocks and transmission blocks, allowing for easy and secure attachment and detachment of weight plates, with a simple and intuitive weight selection system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional connection structure is used for weight plates, then the dumbbell can maintain structural integrity, but the connection structure becomes complicated and prone to failure
Solution Approach 1:
The connection structure is divided into independent functional modules: limiting blocks for positioning, transmission blocks for motion transfer, locking blocks for securing, and elastic components for maintaining force. Each module performs a specific function, simplifying the overall design while improving reliability through modular independence.
Solution Approach 2:
Multiple functional blocks (limiting blocks, transmission blocks, locking blocks) are nested within the weight plate structure, with smaller components housed within larger ones. The elastic components are nested within dedicated chambers, creating a compact integrated assembly that reduces external complexity.
2Adaptability or versatility
If traditional weight selection systems are used, then various weights can be provided, but the weight span between levels is large making it difficult for beginners
Solution Approach 1:
The weight selection system uses dynamic elastic components that can be compressed and released to engage or disengage limiting blocks from locking notches. This dynamic mechanism allows smooth transitions between weight levels and enables fine-grained weight adjustments through incremental block engagement, making it beginner-friendly while maintaining versatility.
3Ease of manufacture
If a simple connection structure is used, then the dumbbell is easier to manufacture, but it becomes more prone to failure
Solution Approach 1:
The elastic components automatically maintain contact force with the limiting blocks without requiring external adjustment or complex mounting mechanisms. The system self-regulates the connection force through elastic deformation, ensuring reliable engagement while keeping the manufacturing process simple and the structure easy to assemble.
4Reliability
If traditional locking mechanisms are used, then weight plates can be secured, but the connection and detachment process is time-consuming
Solution Approach 1:
The limiting blocks are pre-positioned within the weight plate structure at specific locations corresponding to different weight levels. The elastic components are pre-loaded to automatically engage these pre-positioned blocks when the weight plate is attached, eliminating the need for manual positioning or complex locking sequences during assembly or adjustment.
Data Source
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AI summary
A dumbbell comprises a dumbbell body and a weight plate set, wherein the weight plate set comprises a weight plate and a locking mechanism; the locking mechanism comprises an accommodating disk, a limiting device and a limiting disk; the limiting device comprises a limiting block and a transmission block; the limiting block has a locking position and a releasing position; a limiting rail groove is arranged on the limiting disk; the limiting rail groove has a locking section and an opening section; a locking notch is also arranged on the accommodating disk; and a locking part is arranged on the weight plate; when in use, the dumbbell body is rotated, and the dumbbell is used for training such as pushing, lifting, lifting and squatting.