Headphone Button Light Guide Structure for Switch Wear Reduction
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Solution Overview
Problem
The frequent pressing of push buttons on headphones leads to switch failure, reducing the lifespan of the device.
Innovation Solution
The headphone design incorporates a light guiding unit to guide and position push buttons, with retaining portions clamped between a protruding platform and the circuit board, stabilizing button movement and reducing abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If push buttons repeatedly contact switches to perform actions, then operational functionality is achieved, but switch failure occurs and lifespan is shortened
Solution Approach 1:
The patent extracts the switch component from direct contact with the push button by introducing a light guiding unit that transmits optical signals instead of mechanical contact. The push button presses a light guide that converts mechanical pressure to optical signals, which then trigger the switch electronically, eliminating repeated mechanical contact between the button and switch.
Solution Approach 2:
The light guiding unit serves as an intermediary between the push button and the switch. It receives mechanical pressure from the button, converts it to optical signals through light transmission or conversion, and triggers the switch without requiring direct mechanical contact, thereby reducing wear on the switch.
2Ease of operation
If push buttons are mounted directly to contact switches, then button functionality is achieved, but abrasion increases and durability decreases
Solution Approach 1:
The patent replaces the mechanical contact system with an optical system. Instead of the push button directly mechanically contacting the switch, the button presses a light guide that transmits optical signals to trigger the switch electronically, substituting mechanical interaction with optical signaling to reduce mechanical wear.
Solution Approach 2:
The light guiding unit acts as an intermediary that decouples the mechanical pressing action from the switch activation. It receives mechanical input from the button and converts it to optical signals that trigger the switch, preventing direct mechanical abrasion between the button and switch components.
Data Source
AI summary
A headphone includes an outer housing, a light guiding unit, two push buttons, a circuit board mounted in the outer housing, two switches mounted at the circuit board, and an inner housing covered to the outer housing. The outer housing has a peripheral wall, a button hole and an outer wall. An inner surface of the peripheral wall is defined as an inner periphery surface. An outer surface of the peripheral wall is defined as an outer periphery surface. The button hole penetrates through the inner periphery surface and the outer periphery surface. The outer wall is connected with the peripheral wall. An inner surface of the outer wall is defined as an interior surface. The light guiding unit is mounted in the outer housing, and the light guiding unit partially penetrates through the button hole. The two switches resist against the two push buttons.