Weight Adjustable Dumbbell with Spirally Arranged Fasteners
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Solution Overview
Problem
Conventional weight adjustable dumbbells are cumbersome to operate due to the difficulty in directly mounting required dumbbell plates onto the connecting bar, leading to inefficient handling and operation.
Innovation Solution
A weight adjustable dumbbell design featuring a connecting bar with spirally arranged fasteners and notches on dumbbell plates, allowing for direct mounting and adjustment by rotating the bar, with limiting parts to prevent over-rotation and ensure stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional weight adjustable dumbbell design is used with separate racks for storing dumbbell plates, then the dumbbell can adjust its weight, but the operation becomes cumbersome and handling complexity increases
Solution Approach 1:
The patent merges the storage function and mounting function into a single integrated structure. The receiving groove on the supporting base simultaneously stores multiple dumbbell plates and provides direct mounting capability to the connecting bar, eliminating the need for separate racks and reducing handling steps.
Solution Approach 2:
The dumbbell plates are pre-positioned in the receiving groove with their mounting surfaces exposed and aligned. This preliminary arrangement allows the connecting bar to be directly mounted to the plates without requiring separate storage and retrieval operations, simplifying the adjustment process.
2Adaptability or versatility
If multiple dumbbell plates are stored on separate racks, then weight selection is available, but the number of handling steps increases and operation efficiency decreases
Solution Approach 1:
The patent combines multiple dumbbell plates into a single receiving groove structure, allowing all plates to be accessed from one location. This merging of storage locations into a single integrated unit reduces the time and effort required to select and mount plates, thereby improving operation efficiency.
3Reliability
If conventional mounting procedure is used requiring sequential assembly of plates and limiting disks, then the dumbbell structure can be assembled, but the device complexity and handling time increase
Solution Approach 1:
The patent merges the mounting of multiple dumbbell plates into a single operational step. The connecting bar is designed to simultaneously engage with multiple plates that are pre-arranged in the receiving groove, eliminating the need for sequential assembly and reducing the overall assembly procedure complexity.
Data Source
AI summary
A weight adjustable dumbbell, which includes a connecting bar and a supporting base. Two sides of the supporting base are has a receiving groove, respectively. A plurality of dumbbell plates opposite to each other are located in the receiving grooves along an axial direction, a notch is located on each of the dumbbell plates for inserting the connecting bar, a slot opposite to the connecting bar is defined on an inner wall of the notch, fasteners opposite to the dumbbell plates are set on the connecting bar along the axial direction, the fasteners at an end of the connecting bar are arranged spirally along the axial direction at equal angles. The plurality of fasteners can connect to the slot of the dumbbell plates sequentially by rotating the connecting bar, and the dumbbell plates are detachably connected to limiting parts that can limit the rotation of the connecting bar.