Hearing Cable Retention Structure for Tensile and Rotational Loads
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Solution Overview
Problem
The reduction in size of hearing devices due to increased component integration exposes conductors and electronic components to mechanical failure from tensile and rotational forces during removal, leading to potential breakage.
Innovation Solution
A hearing device design that transfers mechanical forces from fragile components, such as conductors, to more durable components like a faceplate or shell using a blunt feature and fibers with high tensile modulus, such as Aramid fibers, to distribute and absorb these forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hearing device size is reduced to incorporate more components, then component integration and functionality are improved, but mechanical strength and resistance to tensile/rotational forces deteriorate
Solution Approach 1:
The patent employs a composite structure combining a rigid housing component with a flexible member containing reinforcing fibers. The flexible member comprises a lumen housinging a conductor, while the reinforcing fibers are embedded within the flexible member to provide tensile strength. This composite construction allows the hearing device to maintain small size with integrated components while the fiber-reinforced flexible member resists mechanical failure from tensile and rotational forces during removal.
2Volume of moving object
If conductor is integrated into multi-function cable for space savings, then device compactness is improved, but reliability under mechanical loading deteriorates
Solution Approach 1:
The patent implements prior cushioning by embedding reinforcing fibers within the flexible member before the conductor is integrated into the multi-function cable. These fibers are positioned to intercept and absorb tensile and rotational forces that would otherwise be transmitted to the conductor during device removal. This preemptive reinforcement protects the conductor from mechanical failure while maintaining the compact integrated cable design.
3Strength
If flexible member shape is used to stabilize shell, then mechanical support is improved, but resistance to rotational forces during removal deteriorates
Solution Approach 1:
The patent enhances the flexible member by incorporating reinforcing fibers within its structure. The flexible member maintains its shape-stabilizing function for the shell while the embedded fibers provide additional resistance to rotational forces during removal. This composite construction allows the flexible member to simultaneously provide mechanical support and protect against rotational loading that would otherwise cause failure.
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
Reduces the likelihood of mechanical failure in fragile components by distributing forces across larger, more durable areas, enhancing the durability and longevity of the hearing device.
Implementation Method 1
the plurality of fibers is configured to transfer mechanical forces from the multi-function cable to the first housing component
Implementation Method 2
fibers with high tensile modulus, such as Aramid fibers, to distribute and absorb these forces
Implementation Method 3
the blunt feature is integrated into the outer jacket and is configured to mechanically interface with a recess defined by the first housing component to prevent rotation of the blunt feature within the recess
Data Source
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AI summary
A hearing device configured to be worn in an ear of a wearer includes a first housing component defining a recess, a second housing component configured to attach to the first housing component to define an enclosure, and a conductor, and a multi-function cable. The multi-function cable includes a blunt feature and an outer jacket of a multi-function cable. The outer jacket extends through the first housing component. A passage is defined by the blunt feature and the outer jacket, and the conductor extends through the passage. The hearing device further includes a plurality of fibers secured to an inner surface of the passage and an inner surface of the enclosure. The fibers extend through the passage and are configured to transfer mechanical forces from the multi-function cable to the first housing component.