Panel Vibration Sound Transmission Sheet Member Segmentation
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Solution Overview
Problem
Existing electronic devices with vibration generators attached to panels face limitations in sound pressure characteristics, particularly in the low frequency band, leading to inadequate sound transmission.
Innovation Solution
Incorporating a sheet member between the housing and the panel, with a deformation area that is not attached to either the panel or the housing, allows the panel to deform freely and enhances sound pressure characteristics by enabling efficient vibration propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the panel is rigidly attached to the housing, then structural stability is improved, but sound pressure characteristics deteriorate due to inhibited vibration
Solution Approach 1:
The sheet member is divided into a fixed portion (attached to housing and panel) and a movable portion (not attached), creating segmented functional zones that simultaneously provide structural support and vibration freedom
Solution Approach 2:
Different portions of the sheet member have different properties: the fixed portion provides structural stability while the movable portion enables vibration, achieving local optimization of both stability and sound pressure characteristics
2Power
If the panel is allowed to deform freely, then sound pressure characteristics are improved, but structural stability deteriorates
Solution Approach 1:
The sheet member is divided into a fixed portion (attached to housing and panel) and a movable portion (not attached), creating segmented functional zones that simultaneously provide structural support and vibration freedom
Solution Approach 2:
Different portions of the sheet member have different properties: the fixed portion provides structural stability while the movable portion enables vibration, achieving local optimization of both stability and sound pressure characteristics
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 solution improves sound pressure characteristics by allowing the panel to deform freely, resulting in increased sound transmission, particularly in the low frequency band, without inhibiting vibration, thus enhancing the overall audio experience.
Implementation Method 1
a vibration generator attached to the panel; such that the panel deforms due to deformation of the vibration generator to transmit human body vibration sound to an object that contacts the panel
Implementation Method 2
between the first portion and the second portion, the sheet member includes an area to which neither the panel nor the housing is attached. The area of the sheet member may deform along with deformation of the panel
Data Source
AI summary
An electronic device in which a vibration generator is attached to a panel allows further improvement in sound pressure characteristics. An electronic device (1) includes a housing (60), a panel (10) held by the housing (60), a vibration generator (30) attached to the panel (10), and a sheet member (80) between the housing (60) and the panel (10). The panel (10) deforms due to deformation of the vibration generator (30) to transmit human body vibration sound to an object that contacts the panel (10). A first portion of the sheet member (80) is joined to the panel (10), and a second portion of the sheet member (80) differing from the first portion is joined to the housing (60). Between the first portion and the second portion, the sheet member (80) includes an area to which neither the panel (10) nor the housing (60) is attached.