Headset Earbud Rotation Mode Switching
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Solution Overview
Problem
Existing communication headsets, particularly small Bluetooth headsets, face challenges in mode switching due to small and cumbersome buttons, and the external metallic contact surfaces in pivot-based designs are vulnerable to wear and noise.
Innovation Solution
A headset design where the earbud is turnable about a first axis, allowing for easy operation and visual indication of mode through rotational position, with the earbud acting as a large actuation button, and a sturdy connection to prevent unwanted activation, using a momentary or push-push switch mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small momentary button is used for mode switching, then the headset can be made compact, but the button becomes difficult to press correctly
Solution Approach 1:
The patent transforms the switching mechanism from a small linear button press to a rotational movement of the earbud along its longitudinal axis. This dimensional change allows the switching function to be integrated into the earbud's natural movement, providing a larger effective actuation area while maintaining compact headset dimensions.
2Ease of operation
If external metallic contact surfaces are used for electrical connection in pivot-based designs, then the connection can be established through pivoting, but the contact surfaces become vulnerable to wear and noise generation
Solution Approach 1:
The patent replaces the mechanical pivot-based switching mechanism with an electromagnetic sensing system. The switch detects the rotational position of the earbud through magnetic field changes rather than physical contact, eliminating wear and noise issues associated with metallic contact surfaces while maintaining reliable switching functionality.
Data Source
Figure 1~9
Figure 10~11
AI summary
A headset (1) comprising a housing (2) with a housing wall (25) enclosing a housing cavity (22), and where the headset (1) further comprises a movable earbud (3) adapted to be inserted into the ear of a user. The headset comprises a switch (12; 15; 33) for changing mode of the headset. The switch (12; 15; 33) is arranged in the housing cavity (22) and operably connected to the earbud (3), such that the switch is activated and changes mode of the headset, when the earbud (3) is moved relative to the headset housing (2). The earbud (3) extends from the housing (2) along a first axis (X) and the housing (2) is elongate and extends along a second, longitudinal axis (Y). The earbud (3) is turnable about the first axis (X) and/or biased towards a single resting position.