Dumbbell Locking Mechanism for Quick Weight Plate Adjustment
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Solution Overview
Problem
Traditional dumbbells have complex connection structures and large weight spans, making them difficult for beginners to use and prone to failure.
Innovation Solution
A locking mechanism for weight plates featuring an accommodating disk with a limiting device and limiting disk, including limiting blocks and transmission blocks, that allows for quick and convenient connection and disconnection of weight plates.
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 position control, transmission blocks for motion transfer, and locking/notching components for secure attachment. Each module performs a specific function, simplifying the overall design while maintaining reliability through modular independence.
Solution Approach 2:
The transmission block acts as an intermediary element between the limiting block and the locking mechanism. It transfers motion and force between components, enabling smooth transitions between locked and unlocked states while reducing direct mechanical stress on critical connection points.
2Ease of operation
If traditional weight plate connections are used, then weight stability is maintained, but the connection process becomes troublesome and time-consuming
Solution Approach 1:
The limiting blocks are pre-positioned on the accommodating disk at predetermined locations. When a weight plate is attached, the limiting blocks automatically engage with corresponding features on the weight plate, eliminating the need for manual alignment or complex fastening procedures during the connection process.
Solution Approach 2:
The locking mechanism is designed to automatically engage and lock weight plates in place through the interaction of limiting blocks, transmission blocks, and locking notches. The system self-regulates the connection process without requiring external tools or complex manual operations, reducing both time and operational complexity.
3Adaptability or versatility
If traditional dumbbell designs are used, then weight capacity is sufficient, but the weight span between levels is large making it difficult for beginners
Solution Approach 1:
The weight selection mechanism is segmented into discrete, evenly-spaced limiting block positions around the accommodating disk. Each position corresponds to a specific weight configuration, allowing beginners to make small, manageable weight adjustments by simply rotating the disk to the next predetermined position rather than dealing with large, unmanageable weight increments.
Data Source
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.