Adjustable Dumbbell Buckle Locking for Fast Weight Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dumbbells require complicated operations and waste time and labor to adjust weight by fixing additional pieces with nuts, which is inefficient.
Innovation Solution
A weight-adjustable dumbbell design featuring detachable spinning buckles and locking devices that allow quick assembly and disassembly of counterweight blocks using spinning slots and elastic locking buckles, enabling fast weight adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fixing nuts are used to attach counterweight blocks, then the connection is reliable, but the operation becomes complicated and time-consuming
Solution Approach 1:
The connection mechanism is segmented into a buckle part on the auxiliary counterweight block and a buckle fitting part on the main counterweight block, allowing independent rotation and engagement of these separate components to achieve quick connection and disconnection
Solution Approach 2:
The buckle part is designed to rotate dynamically, transitioning between engaged and disengaged states. The rotation motion enables the buckle to quickly lock or unlock from the buckle fitting part, providing fast weight adjustment without complicated operations
2Adaptability or versatility
If multiple counterweight blocks are assembled together, then the weight adjustment range increases, but the assembly and disassembly time increases
Solution Approach 1:
The buckle part is pre-positioned on the auxiliary counterweight block in a ready-to-engage state. When assembling, the user simply needs to align and rotate the buckle into the fitting part, eliminating the need for preliminary alignment adjustments and reducing assembly time
Solution Approach 2:
The rotation-based connection mechanism allows the user to quickly skip through the assembly process by simply rotating the buckle part into place, rather than requiring step-by-step fastening operations. This rushes through the assembly process efficiently
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
Facilitates fast and labor-saving weight adjustments by allowing easy attachment and detachment of counterweight blocks, reducing operational complexity and time.
Implementation Method 1
a first elastic locking buckle arranged on the main counterweight block and a first locking slot arranged on the auxiliary counterweight block; and when the first spinning buckle is rotated to enable the first stop convex block to rotate to be staggered from the first notch, causing the first stop edge to stop the first stop convex block of the first spinning buckle in the first spinning slot, the first elastic locking buckle is pressed and locked in the first locking slot
Data Source
AI summary
A weight-adjustable dumbbell includes a handle and counterweight block groups. The counterweight block groups include main counterweight blocks and auxiliary counterweight blocks. The main counterweight blocks are fixedly connected to two ends of the handle. One side of each auxiliary counterweight block is provided with a boss. Two ends of the boss are provided with fan-shaped convex blocks arranged correspondingly. One side of each auxiliary counterweight block away from the boss and one side of each main counterweight block away from the handle are both provided with grooves that are matched with the boss. Two sides of the grooves are provided with fan-shaped slots that are matched with the fan-shaped convex blocks. Mounting clamping slots that are matched with the fan-shaped convex blocks are arranged between inner sides of the grooves and the fan-shaped slots on the two sides.