Dumbbell Locking Mechanism for Weight Plate Security
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Solution Overview
Problem
Existing dumbbells lack a reliable locking mechanism for weight plates, leading to potential safety hazards and inaccurate weight selection during exercise.
Innovation Solution
A locking mechanism for dumbbells featuring a locking part with a locking member and a locking disk, which includes locking protrusions and positioning grooves, and an elastic member to ensure secure locking of weight plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking mechanism is added to ensure weight plate security, then safety and weight selection accuracy are improved, but device complexity increases
Solution Approach 1:
The locking disk is nested within the locking part, with the locking protrusions integrated into the locking disk structure. The locking member is contained within the locking part, creating a compact nested arrangement that provides reliable locking functionality while minimizing structural complexity and space occupation.
Solution Approach 2:
The elastic member automatically pushes the locking block to engage with locking protrusions when the locking disk rotates into the locked position. The mechanism self-locks without requiring additional actuation, and the elastic member automatically disengages the locking block when the locking disk rotates to the unlocked position, providing automatic locking and unlocking functionality.
2Reliability
If a locking mechanism with multiple components is implemented, then weight plate security is improved, but manufacturing difficulty increases
Solution Approach 1:
The locking mechanism is segmented into distinct functional components: locking part, locking disk, locking member, and elastic member. Each component can be manufactured separately using standard machining processes, allowing for independent optimization of manufacturing methods and easier quality control for each individual part.
Solution Approach 2:
The locking protrusions are integrated into the locking disk as a single piece, and the locking member combines the locking block and hook elements. This merging of related features into unified components reduces the total number of parts that need to be manufactured and assembled, simplifying the manufacturing process while maintaining reliable locking functionality.
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 locking mechanism effectively prevents weight plates from falling off during exercise, ensuring user safety and accuracy in weight selection.
Implementation Method 1
the locking block elastically abuts against the locking protrusions or the clamping grooves through the elastic member
Data Source
AI summary
A dumbbell comprises a dumbbell body, a base and a locking mechanism, wherein the dumbbell body comprises a handle and a plurality of weight plates, a plate selection mechanism is arranged between the handle and the weight plates, and plate selection mechanism locks the weight plates by rotating the handle; when the weight plates are locked by the plate selection mechanism, the locking mechanism is in a released state, and when the weight plates are not locked by the plate selection mechanism, the locking mechanism is in a locked state.