Adjustable Dumbbell with Rotating Unit and Sliding Rods
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional dumbbells occupy large spaces and require a tedious process to replace weight plates, making them inconvenient for users with limited storage space.
Innovation Solution
The dumbbell main body features a rotating unit with sliding rods and a fastener system that allows for quick and easy weight plate replacement by aligning fastening blocks with corresponding holes using a weight indicator and rotating mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple conventional dumbbells of different weights are purchased, then users can train different parts with appropriate weights, but storage space is occupied excessively
Solution Approach 1:
The dumbbell system is segmented into a main body and separate weight plates. The main body contains a connecting shaft with multiple fastening holes at different positions, allowing weight plates to be attached at selected locations. This segmentation enables users to have one dumbbell main body that can accommodate multiple weight configurations, eliminating the need to store multiple complete dumbbells of different weights.
Solution Approach 2:
The weight plates are designed to be nested or stacked on the connecting shaft of the main body. The main body structure contains the connecting shaft that can hold multiple weight plates in a compact arrangement. When not in use, weight plates can be stored nested against the main body, minimizing the overall storage space required while maintaining the ability to configure different weight combinations.
2Productivity
If conventional dumbbells are used, then weight is fixed, but replacing weights requires purchasing multiple dumbbells which is tedious and space-consuming
Solution Approach 1:
The dumbbell system transitions from a static, fixed-weight design to a dynamic, adjustable-weight design. The connecting shaft features multiple fastening holes at different positions, and the weight plates can be dynamically repositioned and reattached at different locations along the shaft. This dynamic configuration allows users to quickly adjust weights by simply moving plates between holes rather than replacing entire dumbbells, significantly improving weight replacement efficiency.
3Reliability
If assembled dumbbells with fastening locks are used, then weight plates can be secured, but the process of unlocking and removing fastening locks is time-consuming
Solution Approach 1:
The fastening mechanism is extracted and simplified into a pin-based system. Instead of complex locking mechanisms, the design uses simple pins that can be quickly inserted into or removed from the fastening holes. The weight plates have corresponding holes that align with the pins. This extraction of the fastening function to a simple pin-insertion system maintains security (pins prevent accidental detachment) while dramatically reducing the time required for weight plate attachment and removal compared to traditional locking mechanisms.
Data Source
AI summary
A dumbbell main body includes two side boards, a connecting shaft, a rotating unit and a fastener. Each of the two side boards includes a containing space, a side-board upper chute, a side-board lower chute, a plurality of fastening holes and two fastening blocks. One of the fastening blocks is located above the other fastening blocks. Two ends of the connecting shaft are respectively connected to the two side boards. The rotating unit includes two rotating rings, four connecting boards, four sliding rods and a horizontal connecting board. The two rotating rings are respectively connected to two ends of the connecting shaft. The four connecting boards are respectively connected to the two rotating rings, wherein two of the connecting boards are located above the other two connecting boards. The four sliding rods are respectively disposed at the four connecting rods.