Adjustable Dumbbell Sliding Block Mechanism for Fast Weight Changes
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Solution Overview
Problem
Existing adjustable dumbbells require laborious and inefficient weight adjustment processes, necessitating detachment of the dumbbell grip rod and manual hole selection, which affects exercise efficiency.
Innovation Solution
An adjustable dumbbell design featuring a dumbbell body with a dumbbell grip rod, dumbbell shells, and adjusting blocks that slide to accumulate dumbbell pieces through grooves, facilitated by a mechanism including sliding rods, threaded rods, and locking components for quick weight adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the dumbbell grip rod is detached from the dumbbell shells for weight adjustment, then the adjustment holes can be repositioned to achieve different weights, but the adjustment process becomes laborious and time-consuming
Solution Approach 1:
The adjusting mechanism is divided into separate adjusting blocks that can independently slide along the dumbbell shells. Each adjusting block has adjusting portions that correspond to different weight positions, allowing selective engagement with dumbbell pieces without detaching the grip rod. This segmentation enables independent adjustment of each side of the dumbbell.
Solution Approach 2:
The adjusting blocks serve as intermediary components between the grip rod and the dumbbell shells. These blocks facilitate weight adjustment by sliding along the shells and engaging with dumbbell pieces through adjusting portions, eliminating the need to directly detach the grip rod while still enabling weight changes.
2Adaptability or versatility
If the dumbbell grip rod is detached and reattached at different adjustment holes, then weight adjustment is achieved, but the adjustment efficiency is low
Solution Approach 1:
The adjusting blocks are pre-configured with multiple adjusting portions at different positions along the dumbbell shells, corresponding to different weight settings. Users can directly slide the blocks to the desired position and engage them with dumbbell pieces, eliminating the need for repeated detachment and reattachment of the grip rod for each weight adjustment.
Solution Approach 2:
The adjusting blocks are designed to be movable along the dumbbell shells, transitioning from a static connection to a dynamic adjustment system. This allows users to quickly slide the blocks to different positions and lock them in place, enabling rapid weight changes without permanent structural modifications.
3Adaptability or versatility
If multiple adjustment holes are provided on the dumbbell shells, then various weight adjustments are possible, but the structure becomes more complex
Solution Approach 1:
The adjustment functionality is extracted from the dumbbell shells themselves and transferred to separate adjusting blocks. Instead of providing multiple adjustment holes directly on the shells, the patent uses sliding blocks that can engage with the shells at different positions, simplifying the shell structure while maintaining weight adjustment capability.
Solution Approach 2:
The adjusting blocks serve multiple functions: they slide along the dumbbell shells to select different weight positions, engage with dumbbell pieces through adjusting portions, and lock in place to secure the weight setting. This multi-functionality eliminates the need for complex shell structures with multiple specialized holes.
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 rapid and efficient weight adjustment by allowing the accumulation of dumbbell pieces without detaching the grip rod, improving exercise efficiency and ease of use.
Implementation Method 1
one or two threaded rods, each of the one or two threaded rods is fixedly connected to the central rod; when the central rod is rotated, each of the threaded rods is rotated, and each of the threaded rods is threaded and connected to each of the sliding rods
Implementation Method 2
The fixing portions are slidably fitted to the dumbbell shells
Data Source
AI summary
A novel adjustable dumbbell and a dumbbell kit are provided, the adjustable dumbbell includes a dumbbell body, the dumbbell body includes a dumbbell grip rod, and dumbbell shells sleeved on two ends of the dumbbell grip rod and connected to the two ends of the dumbbell grip rod; one or more dumbbell pieces installed on the dumbbell body, each of the dumbbell pieces is provided with one or more dumbbell grooves; and an adjusting mechanism provided on the dumbbell body, the adjusting mechanism includes one or more adjusting blocks, the adjusting blocks include one or more adjusting portions, the number of the adjusting portions corresponds to the number of the dumbbell pieces, and each of the adjusting portions slides and cooperates with the adjustment mechanism. This application has effects of improving the weight adjustment efficiency of the adjustable dumbbell.