Portable Button Structure for Localized Haptic Vibration
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Solution Overview
Problem
Existing vibration feedback products suffer from diffusion in tactile feedback and insufficient precision, affecting user experience.
Innovation Solution
A portable device design featuring a frame with a mounting hole, a button mounted on the outer side surface, a vibration motor suspended within the frame, and a hollow ring connection member providing precise tactile feedback by isolating vibrations to a specific area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a vibration motor is used to provide tactile feedback, then the user can perceive mechanical stimulus, but the vibration diffuses over a large area reducing feedback precision
Solution Approach 1:
The button is divided into multiple independent vibration units, each capable of generating localized vibration. This segmentation allows precise control of vibration location and area, preventing diffusion across the entire button surface while maintaining effective tactile feedback at targeted positions.
Solution Approach 2:
Different regions of the button are equipped with independent vibration motors, enabling each local area to provide customized tactile feedback. This local quality approach ensures that vibration is concentrated where needed rather than diffusing uniformly across the entire button, thereby improving feedback precision.
2Device complexity
If the vibration motor is directly connected to the button, then the structure is simple, but the vibration transfers to the frame causing diffusion
Solution Approach 1:
An elastic connection piece is introduced as an intermediary between the vibration motor and the button. This elastic component isolates the vibration motor from direct contact with the button and frame, preventing vibration diffusion while maintaining structural simplicity. The elastic piece allows controlled vibration transmission to the button surface without transferring excessive vibration to the frame.
3Strength
If the button is made rigid for durability, then the button withstands pressing forces, but the tactile feedback becomes less realistic
Solution Approach 1:
The button incorporates an elastic layer that changes its mechanical parameters under different conditions. During normal use, the button maintains sufficient rigidity for durability, but during vibration feedback, the elastic layer softens to provide realistic tactile sensation. This parameter change allows the button to simultaneously achieve durability and realistic tactile feedback.
Solution Approach 2:
The button is constructed as a composite structure combining rigid and elastic materials. The rigid outer layer provides durability and withstands pressing forces, while the elastic inner layer enables realistic vibration transmission. This composite material approach resolves the contradiction between strength and tactile feedback realism.
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 achieves clear area vibration and a more realistic tactile feedback experience by isolating vibrations, enhancing user interaction with virtual scenes and remote manipulation.
Implementation Method 1
a vibration motor fixed below the button... The vibration motor is suspended in the mounting hole... clear area vibration
Implementation Method 2
an elastic connection part elastically connecting the vibrator to the housing
Implementation Method 3
a coil fixed to the housing, a vibrator suspended in the housing... the magnet assembly partially extends into the coil
Data Source
AI summary
A portable device, including a frame, a button fixed relative to the frame, a connection member fixedly connecting the button to the frame, a sensor for detecting a pressing state of the button, and a vibration motor fixed below the button. The frame has a mounting hole penetrating therethrough; the frame includes an outer side surface and an inner side surface opposite to the outer side surface; the button is mounted on the outer side surface; the mounting hole penetrates through the outer side surface and the inner side surface; the vibration motor is suspended in the mounting hole; and the connection member is of a hollow ring structure and is fitted and fixed to the edge of the button. When the button vibrates, the 10 vibration is not transferred to other areas of the portable device, thereby achieving better area vibration and more realistic experience for pressing the button.