Headphone Clamping Force Adjustment for Custom Fit Comfort
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Solution Overview
Problem
Conventional headphone devices lack a mechanism to adjust the clamping force, making them unsuitable for different users and unable to achieve a comfortable fit.
Innovation Solution
A clamping force adjustment mechanism is introduced, allowing the deformation of the arc-shaped connecting strip between earmuff assemblies through a system involving a first and second pressing plate, a slide block, a knob, and a bolt, enabling adjustment of the distance between the plates to change the clamping force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed arc-shaped connecting strip is used, then the structure is simple, but the clamping force cannot be adjusted for different users
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed arc-shaped connecting strip into an adjustable structure. The connecting strip is divided into multiple segments that can be rotated relative to each other, allowing the clamping force to be dynamically adjusted to match different user head sizes and preferences, while maintaining overall structural integrity
Solution Approach 2:
The patent implements the nested doll principle through the multi-segment design of the arc-shaped connecting strip. Each segment contains rotational joints that allow nested rotation movements, enabling compact adjustment mechanism within the limited space of the headphone structure, thus increasing adaptability without proportionally increasing device complexity
2Ease of operation
If no adjustment mechanism is provided, then the device is simple to manufacture, but the user cannot self-adjust to a comfortable state
Solution Approach 1:
The patent applies the self-service principle by designing an adjustment mechanism that allows users to independently adjust the clamping force without requiring professional assistance. The rotational joints and modular segments enable users to easily modify the fit to their comfort preferences, enhancing ease of operation
Solution Approach 2:
The patent implements segmentation by dividing the arc-shaped connecting strip into multiple independent segments connected by rotational joints. This modular design allows for easy assembly and adjustment, balancing manufacturing complexity with user self-adjustment capability, as each segment can be independently positioned to achieve the desired clamping force
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
Enables users to customize the clamping force for a comfortable fit by adjusting the distance between earmuff assemblies, enhancing user comfort and adaptability.
Implementation Method 1
The bolt includes a head part and a first threaded part. The head part is fixed on the first pressing plate. The first threaded part is penetrated through the first opening and the second opening and tightened into the first screw hole. While the slide block is driven by the knob and the slide block is moved upwardly or downwardly along the bolt
Implementation Method 2
The arc-shaped connecting strip has a first opening. The clamping force adjustment mechanism includes a first pressing plate, a second pressing plate... The arc-shaped connecting strip is clamped between the first pressing plate and the second pressing plate... Due to the arc-shaped structure and the retractable elastic force of the arc-shaped connecting strip, the user's head can be clamped by the two earmuff assemblies
Data Source
AI summary
A headphone device includes a first earmuff assembly, a second earmuff assembly, an arc-shaped connecting strip and a clamping force adjustment mechanism. The arc-shaped connecting strip is connected with the first earmuff assembly and the second earmuff assembly. The clamping force adjustment mechanism includes a first pressing plate, a second pressing plate, a slide block, a knob and a bolt. The arc-shaped connecting strip is clamped between the first pressing plate and the second pressing plate. The slide block is accommodated within an accommodation recess of the knob. The bolt is penetrated through the arc-shaped connecting strip and the second pressing plate and tightened into the slide block. While the slide block is driven by the knob and moved upwardly or downwardly along the bolt, a distance between the first pressing plate and the second pressing plate is changed, and the arc-shaped connecting strip is subjected to deformation.