Adjustable Headband Structure for Precise Headphone Clamping
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Solution Overview
Problem
Existing headphones lack a relatively large range of adjustable clamping force and precise adjustment of clamping force, failing to accommodate various activities and environments effectively.
Innovation Solution
An adjustable headphone design featuring a head band assembly with movable elongate pieces of varying bending strengths and a gear-gear rack mechanism to control clamping force, allowing for a wide range of adjustment and precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adjustable headband is provided to suit the size of the wearer's head, then the headphone can accommodate different head sizes, but it cannot provide a relatively large range of adjustable clamping force nor provide a precise adjustment of the clamping force
Solution Approach 1:
The patent applies the dynamics principle by making the headband structure adjustable through a mechanical mechanism. The first and second elongate pieces can move relative to each other along the headband assembly, allowing the clamping force to be dynamically adjusted. This is achieved through a gear-rack mechanism where rotating the adjustment mechanism causes the elongate pieces to move, changing the clamping force applied to the wearer's head.
Solution Approach 2:
The patent implements parameter changes by varying the bending strength along the length of the elongate pieces. The first length portion has a first bending strength while the second length portion has a second bending strength that is greater than the first. This gradient in bending strength allows for precise control and a large range of adjustable clamping force, as different portions of the elongate pieces can be engaged depending on the desired clamping level.
2Reliability
If a strong clamping is provided to prevent slipping off during exercise, then the headphone stays secure during physical activities, but it becomes uncomfortable for long-term wearing during lifestyle activities
Solution Approach 1:
The dynamic adjustment mechanism allows the user to switch between strong clamping for exercise and softer clamping for lifestyle activities. The movable elongate pieces enable the clamping force to be changed from a first state (stronger, for exercise security) to a second state (softer, for comfort during prolonged wear), accommodating different usage scenarios.
Solution Approach 2:
By changing the bending strength parameter distribution and the position of the elongate pieces, the system can provide different clamping force levels. The varying bending strength along the elongate pieces allows precise control over the clamping force, enabling strong clamping when needed for reliability and softer clamping for comfort during extended wear.
3Ease of operation
If a loose clamping is provided for comfortable long-term wearing during lifestyle activities, then the headphone is comfortable for extended use, but it cannot provide adequate sealing function in noisy environments
Solution Approach 1:
The adjustable mechanism allows the user to dynamically change the clamping force from a loose state (for comfort during lifestyle activities) to a moderate or strong state (for sealing in noisy environments). The gear-rack mechanism enables smooth transitions between different clamping levels, allowing the same headphone to serve multiple environmental conditions.
Solution Approach 2:
The system utilizes parameter changes in the bending strength distribution and the position of the elongate pieces to provide a wide range of clamping forces. This allows the headphone to deliver comfortable loose clamping for extended wear while also being capable of providing moderate clamping for adequate sealing in noisy environments, thus satisfying both comfort and reliability requirements under different conditions.
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 design provides a large range of adjustable clamping force and precise adjustment, ensuring comfort and sealing in different activities and environments.
Implementation Method 1
a gear located on the fixing frame... The first rack and the second rack are arranged oppositely and are meshed on the two sides of the gear
Implementation Method 2
a first rack is arranged at one end. The right sliding steel sheet is located on the fixing frame in a sliding mode, and a second rack is arranged at one end
Implementation Method 3
The auxiliary band part which is coupled with the head band is made freely expandable and shrinkable by providing a spring material for a restoring force
Implementation Method 4
at least one of the elongate pieces is movable along the length of the head band assembly and comprises a first length portion and a second length portion having a larger bending strength than the first length portion
Data Source
Figure 1~2
Figure 3~4A
Figure 4B~5
AI summary
The present disclosure provides an adjustable headphone, comprising: a head band assembly; and two earpieces attached to two ends of the head band assembly, respectively; wherein the head band assembly comprises: a first and second elongate pieces each extending over a portion of the length of the head band assembly, at least one of the elongate pieces is movable along the length of the head band assembly and comprises a first length portion and a second length portion having a larger bending strength than the first length portion.