Headphone Hanger Protrusion Link for Dual-Axis Folding
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Solution Overview
Problem
Conventional overhead-type headphones with folding mechanisms have a high number of parts, leading to increased costs and design constraints due to separate revolution axes for folding and longitudinal directions, which limits their compactness and aesthetic design flexibility.
Innovation Solution
A headphone design featuring a hanger with protrusions linked to a two-axes revolution mechanism, allowing 90° rotation around both the folding and longitudinal axes, integrated into a single mechanism to reduce part count and enhance compactness while preventing interference during folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate folding mechanism and longitudinal revolution mechanism are provided, then folding capability is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the folding mechanism and longitudinal revolution mechanism into a single integrated mechanism. The link portion serves dual purposes: it enables both the folding motion of the housing portion and the longitudinal rotation, eliminating the need for separate mechanisms and reducing overall device complexity
Solution Approach 2:
The link portion is designed as a universal component that performs multiple functions simultaneously. It acts as both the folding pivot and the longitudinal rotation axis, allowing a single part to control two different motions that were previously required separate mechanisms
2Device complexity
If folding axial line is located closer to center side of headband, then folding mechanism is simplified, but design freedom of housing portion is constrained
Solution Approach 1:
The patent introduces a spatial dimension solution by positioning the link portion at the end of the headband rather than at the center. This end-positioning allows the housing portion to be folded without constraining its outward appearance design, as the folding motion occurs in a different spatial location that does not interfere with the housing's external design freedom
Data Source
AI summary
A hanger has a support column having a protrusion. The protrusion has a first and a second protrusion formed to be protruding in opposite directions with each other on a second axial line that intersects orthogonally with a first axial line, and a third protrusion formed to be protruding on a third axial line that intersects orthogonally with the first axial line and the second axial line. A link portion has an accommodation portion for engaging and accommodating the protrusion. The hanger is linked with the link portion, such that a revolution within a first prescribed angle range around the first axial line is permitted, and a folding revolution that is a revolution within a second prescribed angle range around the second axial line is permitted when the support column is located at either one of both ends of the first prescribed angle range.