Pivoting Speaker Assembly for Convertible Notebook Audio Orientation
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Solution Overview
Problem
In convertible notebook computers, the built-in speakers' audio output direction is not always facing the user due to the relative movement of the device's bodies, leading to reduced volume and an affected hearing experience.
Innovation Solution
A pivoting mechanism with a linking mechanism and torque portions allows the audio output direction of the speaker unit to adjust between the first and second bodies, ensuring the audio output faces the user by creating an included angle between the speaker plane and the geometric plane defined by the rotating shafts, and sensors adjust volume and frequency accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the speaker is fixed to the second body of the convertible notebook computer, then the speaker structure is simple and easy to manufacture, but the audio output direction cannot face the user when the first body and second body move relatively
Solution Approach 1:
The speaker unit is mounted on a pivoting mechanism that includes a first rotating shaft, a second rotating shaft, and a third rotating shaft, allowing the speaker to dynamically adjust its audio output direction based on the relative movement between the first body and second body, transforming a static mounting structure into a dynamic one that adapts to different usage scenarios
Solution Approach 2:
A linking mechanism comprising a first rolling member and a second rolling member is introduced as an intermediary between the pivoting mechanism and the speaker unit. This linking mechanism translates the relative movement between bodies into rotational movement of the speaker, enabling automatic audio output direction adjustment without requiring complex active control systems
2Reliability
If the speaker audio output direction does not face the user, then the speaker structure remains fixed and simple, but the volume is reduced and hearing experience is affected
Solution Approach 1:
The pivoting mechanism is designed to automatically adjust the speaker's audio output direction based on the relative movement between the first body and second body. The mechanism self-regulates without requiring external control signals, using the mechanical connection and rolling members to inherently orient the speaker toward the user, thereby improving hearing experience while avoiding complex electronic control systems
Solution Approach 2:
The pivoting mechanism serves multiple functions: it supports the speaker unit, enables rotation around multiple axes (first rotating shaft, second rotating shaft, third rotating shaft), and automatically orients the speaker based on device configuration. This multi-functional design achieves reliable audio output direction adjustment without requiring separate control mechanisms for each function
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 solution ensures the user receives the best sound effect by dynamically adjusting the speaker's audio output direction and volume based on the device's mode and movement, enhancing the listening experience across different usage modes.
Implementation Method 1
The first rolling member and the second rolling member roll relative to each other within an angle range
Data Source
AI summary
A portable electronic device includes a first body, a second body, a pivoting mechanism, a linking mechanism, and a first speaker unit. The pivoting mechanism is pivoted between the first body and the second body and includes a first rotating shaft, a second rotating shaft, and a third rotating shaft, and the third rotating shaft has a mounting portion. The linking mechanism includes a first rolling member and a second rolling member. The first rolling member is connected to the third rotating shaft of the pivoting mechanism, and the second rolling member is connected to the second rotating shaft of the pivoting mechanism. The first rolling member and the second rolling member roll relative to each other within an angle range. The first speaker unit is fixed to the mounting portion.