Vibration Actuator Housing Gap for Touch Panel Force Transfer
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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 supported by elastic members and can displace relative to the base, allowing for efficient vibration transmission through a magnetic circuit and elastic deformation, with the device attached to a contact member or housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the vibration generating device is directly attached to the housing or contact member, then the vibration force transmission is improved, but the device complexity increases due to additional attachment mechanisms
Solution Approach 1:
The vibration generating device is integrated with the contact member such that the plate of the vibration generating device serves as part of the contact member structure itself. This merging eliminates the need for separate attachment mechanisms while ensuring effective vibration force transmission to the touch panel.
Solution Approach 2:
The contact member is designed to serve multiple functions: it acts as both the contact interface for touch input and as the vibration transmission path. By making the vibration generating device's plate integral with the contact member, the same structural element performs both functions without requiring additional components.
2Power
If the plate is allowed to displace relative to the base, then the vibration generation efficiency is improved, but the stability of the device structure deteriorates
Solution Approach 1:
The plate is designed to be dynamically movable relative to the base through elastic deformation, allowing it to respond to electromagnetic forces for vibration generation. The elastic member enables controlled displacement while maintaining structural integrity, achieving both vibration efficiency and stability.
Solution Approach 2:
The elastic member's material properties and geometric parameters are optimized to provide appropriate stiffness characteristics. This allows the plate to displace sufficiently for effective vibration generation while the elastic member maintains overall structural stability through its restoring force.
3Reliability
If elastic members are used to support the plate, then the vibration transmission is improved through elastic deformation, but the device complexity increases
Solution Approach 1:
The elastic member is implemented as a thin, flexible structure that provides the necessary elastic deformation for vibration transmission. This thin-film approach achieves reliable vibration transmission while minimizing structural complexity and maintaining a compact device profile.
4Ease of manufacture
If a gap is formed between the vibration generating device and housing, then the ease of manufacture is improved, but the vibration force transmission deteriorates
Solution Approach 1:
The elastic member acts as an intermediary element that bridges the gap between the vibration generating device and the housing while maintaining effective force transmission. This intermediary allows for manufacturing tolerances and assembly ease while ensuring sufficient vibration force is transmitted through the elastic deformation of the intermediate element.
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
This design enables efficient vibration transmission to electronic devices, enhancing user feedback and reducing noise, while allowing for compact and effective vibration generation.
Implementation Method 1
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 2
a vibration generating device including a base and a plate displaceable in a direction away from or closer to the base
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, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. A gap is formed between a surface of the vibration generating device facing the housing and a surface of the housing facing the vibration generating device.