Quick Assembly Dumbbell Connecting Structures
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Solution Overview
Problem
Current weight adjustable dumbbells have complicated connecting structures and are inconvenient to disassemble and quickly adjust, lacking simple and quick separable connections between weight plates.
Innovation Solution
The implementation of quick assembly and disassembly connecting structures featuring a male structure with a plug-in part and a female structure with an insertion groove, lock button, and restoring springs, allowing for easy connection and disconnection of dumbbell weight plates through a secure yet separable mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional connecting structures are used for weight adjustable dumbbells, then the connection between weight plates is secure, but the structure becomes complicated and disassembly becomes inconvenient
Solution Approach 1:
The connecting structure is divided into separate male and female components with distinct functions. The male structure includes a plug-in part and locking protrusion, while the female structure includes an insertion groove and lock button mechanism. This segmentation allows each component to be optimized independently, simplifying the overall assembly while maintaining secure connection.
Solution Approach 2:
The locking function is extracted as a separate operable element (lock button) that can be independently actuated. The lock button is connected to the locking protrusion through a restoring spring, allowing the user to engage or disengage the locking mechanism without manipulating the entire weight plate assembly. This extraction simplifies the disassembly operation to a single button press.
2Productivity
If traditional connecting structures are used for weight adjustable dumbbells, then the connection is stable, but quick adjustment of weight becomes impossible
Solution Approach 1:
The locking protrusion is pre-positioned on the male structure and the insertion groove is pre-formed on the female structure. When assembling, the user simply needs to align and insert the male plug-in part into the female insertion groove, and the lock button automatically engages the locking protrusion. This preliminary preparation of the connection interfaces enables quick assembly without complex alignment procedures or multiple adjustment steps.
Solution Approach 2:
The restoring spring automatically returns the lock button to its locked position after being pressed. When the user releases the lock button after disassembly, the spring self-activates to reset the mechanism, preparing it for the next connection without requiring additional user intervention. This self-resetting feature enables rapid repeated adjustments.
3Ease of operation
If a simple connecting structure is used, then assembly and disassembly become easy, but the connection stability and security are compromised
Solution Approach 1:
The connection mechanism merges multiple functions into a single integrated action: the plug-in part simultaneously provides structural support, alignment guidance, and engagement surfaces, while the lock button mechanism combines locking, retention, and release functions. This merging maintains connection stability without requiring separate complex mechanisms for each function.
Solution Approach 2:
The restoring spring introduces an elastic element that provides continuous contact force between the lock button and the male structure. This elastic curvature allows the locking mechanism to accommodate minor misalignments and maintain stable engagement through continuous pressure, enhancing connection reliability while keeping the structure simple.
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
Enables easy assembly and disassembly operations with stable connections and quick weight adjustments between dumbbell weight plates, enhancing user convenience and security.
Implementation Method 1
the pair of lock button restoring springs of said another one of the two adjacent connecting structures biases the lock button of said another one of the two adjacent connecting structures towards the male structure of said one of the two adjacent connecting structures
Data Source
AI summary
Quick assembly and disassembly connecting structures and a weight adjustable dumbbell; each connecting structure include a male structure and a female structure respectively on its two sides; the male structure includes a plug-in part; the female structure includes an insertion groove, a lock button and lock button restoring springs; during assembly, the plug-in part of a connecting structure inserts into the insertion groove of another connecting structure; a lock button of said another connecting structure abuts a top side of the plug-in part to prevent it from falling out; when pushing the lock button away from the plug-in part, the lock button is separable from the insertion groove, and stops abutting the top side of the plug-in part to make it separable; the lock button restoring springs biases the lock button towards the plug-in part and resets the lock button towards the plug-in part when external force is not applied.