Haptic Presentation System with Fluid-Driven Elastic Layer
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Solution Overview
Problem
Existing haptic presentation apparatuses require time to expand connecting lids due to the need to increase internal chamber pressure, limiting the speed at which haptic feedback can be presented.
Innovation Solution
A haptic presentation apparatus comprising a base material, an elastic layer, and a fluid transport apparatus, where the elastic layer is expanded by injecting fluid into a second space between the elastic layer and the base material, and the fluid is vented outside through a second through hole, allowing for rapid expansion and contraction of the elastic layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air pressure is increased to expand the connecting lid, then the chamber can be filled with air, but it takes time to expand the connecting lid
Solution Approach 1:
The patent extracts the fluid injection function from the chamber interior to the space between the elastic layer and base material. By injecting fluid into the second space rather than directly into the chamber, the connecting lid expands immediately without requiring internal pressure buildup, thus eliminating the time delay while maintaining reliable haptic feedback presentation.
Solution Approach 2:
The patent introduces a second space as an intermediary between the fluid transport apparatus and the chamber. This intermediate space allows fluid to be injected indirectly, enabling the connecting lid to expand through external pressure on the elastic layer rather than through internal pressure buildup, thereby reducing expansion time while maintaining system reliability.
2Speed
If fluid is injected into the second space between the elastic layer and the base material, then the elastic layer expands rapidly, but the system complexity increases
Solution Approach 1:
The patent utilizes the elastic layer as a flexible membrane that responds to fluid pressure by deforming and expanding. This flexible structure enables rapid surface deformation when fluid is injected into the second space, achieving high speed while avoiding complex mechanical actuation mechanisms. The elastic layer itself serves as the actuating element, simplifying the overall device structure.
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 quick deformation of the surface, allowing for rapid presentation of various haptic feedback to the user, improving the responsiveness and effectiveness of haptic experiences.
Implementation Method 1
the elastic layer is expanded by injecting the fluid from the fluid transport apparatus such that an internal pressure of a second space between the elastic layer and the base material is higher than an internal pressure of the first space
Implementation Method 2
the fluid injected into the second space is vented to outside of the second space via a second through hole by stopping driving of the fluid transport apparatus
Data Source
AI summary
A haptic presentation apparatus includes a base material, an elastic layer, and a fluid transport apparatus. The base material forms a first space and includes a first through hole. The elastic layer covers a surface of the base material including the first through hole. The fluid transport apparatus injects fluid between the elastic layer and the base material via the first through hole. The elastic layer is expanded by injecting the fluid from the fluid transport apparatus such that an internal pressure of a second space between the elastic layer and the base material is higher than an internal pressure of the first space, and the fluid injected into the second space is vented to outside of the second space via a second through hole by stopping driving of the fluid transport apparatus.