Rotatable Microphone Arm for Compact Communication Headset
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Solution Overview
Problem
Conventional ear-hooked communication headsets are bulky and inconvenient for carrying due to their large size, especially when not in use, as they cannot be easily placed in pockets or bags.
Innovation Solution
A compact communication headset design featuring a rotatable microphone arm that reduces overall dimensions by incorporating a pivot mechanism with a spring shaft and limiting body, allowing the microphone arm to fold 180 degrees for storage, thus enabling more compact form factor without compromising communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the microphone arm is made relatively long to position the sound-receiving opening remote from the main unit, then the communication quality is improved, but the headset becomes bulky and inconvenient for carrying
Solution Approach 1:
The patent applies the dynamics principle by making the microphone arm rotatable rather than fixed. The arm can rotate between a use position (extending outward to capture sound effectively) and a storage position (retracted against the housing). This dynamic configuration allows the system to have a long effective length during operation while maintaining a compact form factor during storage, resolving the contradiction between communication quality and portability.
2Device complexity
If the microphone arm is fixed in position, then the structure is simple, but the headset cannot be compacted for convenient storage in pockets or bags
Solution Approach 1:
The microphone arm is designed with rotational movement capability, transforming from a static fixed structure to a dynamic adjustable one. The arm can rotate to different positions based on usage requirements, enabling compact storage when not in use while maintaining operational effectiveness during use.
Solution Approach 2:
The patent implements the nesting principle by allowing the microphone arm to be retracted and stored within the contours of the headset housing when not in use. The arm folds back against the housing body, effectively nesting the extended component within the overall device envelope, thus achieving compact portability without significantly increasing structural complexity.
3Volume of moving object
If the microphone arm is made rotatable with pivot mechanism, then the headset becomes compact for carrying, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the microphone arm into modular components: a base portion that rotates on the housing, an extension portion that carries the microphone, and a connection portion that links them. This segmentation allows each part to be optimized independently and simplifies the overall pivot mechanism design, reducing complexity while achieving the desired compactness.
Solution Approach 2:
The patent introduces a pivot mechanism as an intermediary element between the housing and the microphone arm. This pivot acts as a simple rotational joint that enables the arm to move between extended and retracted positions without requiring complex actuation systems, thus achieving compactness with minimal added complexity.
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 rotatable microphone arm design allows for a more compact headset that is convenient to carry while maintaining effective communication quality, as it folds to reduce size and can be easily stored when not in use.
Implementation Method 1
A spring winds around the spring shaft for providing a torsion force to the microphone arm
Data Source
AI summary
A communication headset includes a housing having an upper cover defining a pivot hole and a locating hole. An earpiece and an ear hook are disposed on the top of the upper cover. A microphone arm has a raised portion received in the pivot hole. The bottom center of the raised portion defines an aperture. A locating cavity is defined at the bottom of the microphone arm. A pivot frame fixed in the housing defines a receiving can to accept a spring shaft, around which a spring winds for providing a torsion force to the microphone arm. An end of the spring shaft forms a locking portion fixed in the aperture. And a limiting body having a buckling block is mounted in the housing for limiting rotation of the microphone arm which is driven by the torsion force when the buckling block is forced to withdraw from the locating cavity.