Adjustable Dumbbell Self-Locking Chuck Mechanism for Secure Weight Changes
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Solution Overview
Problem
Traditional dumbbells are inconvenient to adjust weight, require large storage space, and pose safety hazards due to loose plates during use.
Innovation Solution
An adjustable dumbbell with self-locking modules and a handle that drives chucks to rotate for automatic weight adjustment, ensuring stability and safety by locking the dumbbell on a base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dumbbell plates are manually removed and mounted for weight adjustment, then weight can be changed, but the adjustment process is inconvenient and time-consuming
Solution Approach 1:
The system automatically adjusts weights through a handle mechanism that drives chucks to rotate, causing dumbbell plates to be automatically selected and clamped based on the desired weight, eliminating the need for manual plate removal and mounting
Solution Approach 2:
The patent replaces the manual mechanical system of removing and mounting plates with an automated mechanical system using a handle, chucks, and self-locking modules that automatically select and secure the appropriate weight plates
2Adaptability or versatility
If multiple dumbbells with various weights are stored, then weight selection is possible, but storage space requirement increases
Solution Approach 1:
A single adjustable dumbbell can provide multiple weight options by selectively clamping different combinations of dumbbell plates, replacing the need for multiple fixed-weight dumbbells and reducing storage space requirements
Solution Approach 2:
The dumbbell plates are stacked and nested on the rod body, with the chuck mechanism able to selectively clamp different portions of the stacked plates, allowing one dumbbell to function as multiple weight options
3Ease of operation
If dumbbell plates are loosely mounted on traditional dumbbells, then weight adjustment is possible, but safety hazard increases due to plates easily loosening during movement
Solution Approach 1:
The self-locking modules are pre-configured with locking blocks and convex sheets that automatically engage to secure the dumbbell plates to the chucks, preventing loosening before it can occur during movement
Solution Approach 2:
The locking block acts as an intermediary element between the chuck and dumbbell plate, with convex sheets on both components that interlock to prevent relative motion and secure the plate firmly during use
4Productivity
If complex internal mechanisms are used for quick weight adjustment, then weight adjustment speed improves, but failure rate increases due to complex structure
Solution Approach 1:
The complex mechanism is segmented into simple, independent components: a handle for rotation, chucks for clamping, and self-locking modules with locking blocks. Each component has a single clear function, reducing complexity and potential failure points while maintaining quick adjustment capability
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
The design provides a high-reliability adjustable dumbbell with a simple structure, enabling safe and compact weight adjustment, preventing plate sliding and accidental falling.
Implementation Method 1
a reset spring, wherein the locking block is mounted in the fixed frame through the reset spring
Data Source
AI summary
A high-reliability adjustable dumbbell, including a base for placing dumbbell plates, the dumbbell plates, a handle, a self-locking module, and several chucks mounted on a rod body. Rotation of the handle drives the chucks to rotate, and the chucks are clamped with or staggered from the dumbbell plates. By the arrangement of the self-locking module, the present disclosure ensures the stability of the dumbbell during use and prevents the dumbbell plates from sliding off during movement, thus ensuring the safety of use by a user. Meanwhile, the dumbbell can be locked on the base to prevent accidental collision and falling of the dumbbell plates.