Vibration Actuator Contact Structure for Quiet Touch Panel Feedback
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Solution Overview
Problem
Existing electronic devices face challenges in effectively transmitting vibrations generated by vibration actuators to touch panels, requiring efficient attachment mechanisms to ensure vibration force transmission.
Innovation Solution
An electronic device design incorporating a vibration generating device with a base, plate, coil, and elastic members, where the plate is displaced between the base and a contact member, utilizing magnetic attraction and elastic deformation to generate vibrations, and is attached to the device through a contact member or housing with a gap to enhance vibration transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the vibration generating device is directly attached to the housing without a gap, then the vibration transmission is maximized, but the magnetic attraction force between the plate and base is reduced and noise increases
Solution Approach 1:
The housing acts as an intermediary element between the vibration generating device and the external environment. By positioning the vibration generating device with a gap relative to the housing, the housing serves as a mediator that transmits vibration while allowing the magnetic field to maintain its attraction force without direct contact, thus resolving the contradiction between vibration transmission and magnetic attraction strength.
2Force
If the vibration generating device is directly attached to the housing without a gap, then the vibration transmission is maximized, but noise is increased
Solution Approach 1:
The housing serves as a mediator that separates the vibration generating device from direct contact with other components. The gap between the vibration generating device and housing, combined with the housing's structural properties, reduces noise generation while still allowing effective vibration transmission to occur through the housing structure.
3Object-generated harmful factors
If the plate is kept spaced apart from the contact member, then noise is reduced and magnetic attraction is maintained, but vibration transmission efficiency is reduced
Solution Approach 1:
The plate is designed to dynamically adjust its position relative to the contact member during operation. The plate can be displaced in the direction away from or closer to the base, allowing it to optimize the balance between maintaining magnetic attraction (when spaced apart) and transmitting vibration effectively (when in contact or close proximity to the contact member).
Solution Approach 2:
The vibration generating device operates through periodic magnetic attraction and release cycles. The plate is attracted to the base during vibration generation, then released to return to its spaced-apart position, creating a periodic action that maintains both noise reduction and vibration transmission efficiency throughout the operational cycle.
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 design enables efficient vibration transmission to electronic devices, providing a strong magnetic attraction force and reducing noise, while allowing for a compact and efficient vibration generating device that can be used in various electronic devices.
Implementation Method 1
the vibration generating device includes a base, a plate displaceable in a direction away from or closer to the base, and a coil
Implementation Method 2
utilizing magnetic attraction and elastic deformation to generate vibrations
Implementation Method 3
the vibration generating device includes a first elastic member supporting the plate with respect to the base, and the first elastic member supporting the plate in contact with the contact member is deformed
Implementation Method 4
the first elastic member supporting the plate in contact with the contact member urges the plate toward the contact member
Data Source
AI summary
In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, a plate displaceable with respect to the base, an elastic member supporting the plate with respect to the base. The base, the plate and the elastic member are arranged inside the housing. A magnetic gap is formed with the plate and the base. The plate connects with the contact member.