Multi-Function Strap Tightness Adjustment Mechanism
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Solution Overview
Problem
Existing devices for adjusting the tightness of strap elements, such as head-mounted displays, often require both a knob and a press button, leading to increased cost, complexity, and user inconvenience due to the need to locate multiple adjustment mechanisms.
Innovation Solution
A device comprising an outer adjustment element, an intermediate adjustment element, and an inner adjustment element, which allows for both rotation and pressing adjustments by using a knob with ribs and elastic elements to change the overlapping of strap elements' hollow regions, eliminating the need for separate buttons and enhancing user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both a knob and a press button are equipped for adjusting strap tightness, then both step and non-step adjustments can be achieved, but the device appearance becomes less pleasing, cost increases, and user experience deteriorates due to the need to locate multiple control mechanisms
Solution Approach 1:
The patent combines the functions of a knob (for step adjustment) and a press button (for non-step adjustment) into a single integrated adjustment element. This adjustment element has a pressing portion that can be pressed to release the ratchet mechanism, and a rotating portion that can be rotated for incremental adjustment. By merging these two previously separate controls into one unified component, the patent achieves both step and non-step adjustment capabilities while simplifying the device structure, reducing cost, and improving appearance.
Solution Approach 2:
The adjustment element is designed to perform multiple functions: it can be pressed to release the ratchet for non-step adjustment, rotated for step adjustment, and serves as both a control mechanism and a structural component of the buckles. This multi-functional design eliminates the need for separate controls, thereby reducing device complexity while maintaining versatile adjustment capabilities.
2Adaptability or versatility
If both a knob and a press button are equipped for adjusting strap tightness, then both step and non-step adjustments can be achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the functions of a knob (for step adjustment) and a press button (for non-step adjustment) into a single integrated adjustment element. This adjustment element has a pressing portion that can be pressed to release the ratchet mechanism, and a rotating portion that can be rotated for incremental adjustment. By merging these two previously separate controls into one unified component, the patent achieves both step and non-step adjustment capabilities while simplifying the device structure, reducing cost, and improving appearance.
3Adaptability or versatility
If both a knob and a press button are equipped for adjusting strap tightness, then both step and non-step adjustments can be achieved, but user experience deteriorates due to the need to locate multiple control mechanisms
Solution Approach 1:
The patent combines the functions of a knob (for step adjustment) and a press button (for non-step adjustment) into a single integrated adjustment element. This adjustment element has a pressing portion that can be pressed to release the ratchet mechanism, and a rotating portion that can be rotated for incremental adjustment. By merging these two previously separate controls into one unified component, the patent achieves both step and non-step adjustment capabilities while simplifying the device structure, reducing cost, and improving appearance.
Solution Approach 2:
The adjustment element is designed to be intuitively operable without requiring the user to locate or understand multiple separate controls. The single element provides both pressing and rotating functions, allowing users to naturally interact with it based on their needs. This self-service design improves ease of operation by eliminating the cognitive load of locating and operating multiple separate control mechanisms.
4Device complexity
If only a knob is used for adjusting strap tightness, then the device structure is simple, but the adjustment speed is relatively slow
Solution Approach 1:
The patent combines the functions of a knob (for step adjustment) and a press button (for non-step adjustment) into a single integrated adjustment element. This adjustment element has a pressing portion that can be pressed to release the ratchet mechanism, and a rotating portion that can be rotated for incremental adjustment. By merging these two previously separate controls into one unified component, the patent achieves both step and non-step adjustment capabilities while simplifying the device structure, reducing cost, and improving appearance.
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
The device provides a convenient and cost-effective means to adjust strap tightness with both step and non-step adjustments, improving user experience by simplifying the adjustment process and reducing manufacturing costs without the need for multiple control mechanisms.
Implementation Method 1
the elastic element forces the outer adjustment element and the intermediate adjustment element to change back to the in-contact state from the separation state
Data Source
AI summary
A device for adjusting the degree of tightness is provided. The device is for a first strap element and a second strap element. The device includes an outer adjustment element, an inner adjustment element, and an intermediate adjustment element. The inner adjustment element is disposed inside the outer adjustment element. The intermediate adjustment element is disposed between the inner adjustment element and the outer adjustment element. The first strap element includes a first hollow region, and the second strap element includes a second hollow region. The inner adjustment element passes through the first hollow region and the second hollow region to adjust the degree of overlapping of the first hollow region and the second hollow region.