Selectable Dumbbell End-Cover Display for Wear-Protected Weight Readout
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Solution Overview
Problem
Existing dumbbells suffer from worn-out labels on the outer sidewall of the internal end cover, which affect readability, and protective covers increase the overall size of the dumbbell.
Innovation Solution
A weight-visualized dumbbell design with a display mechanism in the end cover assembly that rotates synchronously with the handle tube, displaying the weight through a label corresponding to the gear position, eliminating the need for an additional protective cover and reducing the size of the internal end cover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If labels are marked on the outer sidewall of the internal end cover, then the labels are easily accessible and readable, but the labels are worn easily leading to unclear readings
Solution Approach 1:
The display mechanism is merged with the end cover assembly, integrating the label display function into the structural component. The label is positioned on the display mechanism that is part of the end cover assembly, allowing the label to be protected while remaining visible through the display opening.
Solution Approach 2:
The display opening acts as an intermediary element that allows the label to be visible and readable from the outside while physically protecting it from wear and damage. The label is not directly exposed to external contact but can still be read through the opening.
2Reliability
If a protective cover is provided for the labels on the peripheral surface of the internal end cover, then the labels are protected from wear, but the overall size of the dumbbell increases
Solution Approach 1:
The display mechanism is combined with the end cover assembly, eliminating the need for a separate protective cover. The end cover assembly itself serves as the protective structure while housing the display mechanism with the label.
Solution Approach 2:
The end cover assembly performs multiple functions: it protects the internal components, houses the display mechanism, and provides a protective environment for the label without requiring an additional protective cover layer.
3Reliability
If the display mechanism is integrated into the end cover assembly, then the label is protected from wear without increasing size, but the structure becomes more complex
Solution Approach 1:
The display mechanism is integrated into the end cover assembly, combining multiple functions into a single structural unit. This reduces the need for separate protective covers and simplifies the overall structure despite the added functionality.
Data Source
AI summary
A weight-visualized dumbbell includes two weight plate sets and a grab handle assembly configured to suspend and grip the weight plate sets, where the grab handle assembly includes a handle tube, an end cover assembly connected to the handle tube, and a plate selection mechanism connected to the handle tube and rotating synchronously with the handle tube; the plate selection mechanism is provided with a plurality of gears; when the plate selection mechanism rotates to different gears, different numbers of weight plates are fixedly suspended and gripped; a display mechanism is provided in the end cover assembly; the display mechanism rotates synchronously with the handle tube; the display mechanism is provided with labels that are in one-to-one correspondence with the gears of the plate selection mechanism; and a display opening configured for the label to be exposed is formed in the end cover assembly.