Adjustable Support Hinge for Stable Rotational Friction
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Solution Overview
Problem
Earmuff headphones suffer from unstable frictional force due to deterioration of rubber sealing rings, affecting service life and rotational feel.
Innovation Solution
A supporting unit with a first part, second part, and adjusting module, utilizing a rod body, friction component, and adjusting member to generate a stable frictional force, allowing adjustment of rotational force through a screw-nut mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber sealing ring is used to adjust frictional force, then the initial frictional force can be maintained, but the sealing ring deteriorates over time causing unstable frictional force
Solution Approach 1:
The patent extracts the friction-generating function from the rubber sealing ring and relocates it to a dedicated friction component. This separation allows the sealing ring to focus solely on sealing while the friction component provides stable frictional force through its specific structure (friction surface, pressing surface, and elastic component), resolving the contradiction between initial friction performance and long-term stability.
Solution Approach 2:
The patent changes the material and structural parameters of the friction component to achieve stable frictional force. The friction component uses an elastic material with specific resilience properties, and its structure includes a friction surface and pressing surface that maintain consistent contact pressure, ensuring stable frictional force over the product's service life unlike the deteriorating rubber sealing ring.
2Ease of operation
If the supporting member is rotatably connected to allow adjustment, then rotational freedom is achieved, but the rotational position becomes unstable without sufficient frictional force
Solution Approach 1:
The patent implements a dynamic friction adjustment mechanism where the frictional force can be modified according to different usage scenarios. The adjusting member allows users to change the pressing force on the friction component, enabling the system to adapt between easier rotation (lower friction) and more stable positioning (higher friction), thus resolving the contradiction between rotational ease and positioning stability.
Solution Approach 2:
The elastic component in the friction component provides inherent feedback through its resilient properties. When the supporting member rotates, the elastic component deforms and generates restoring force, providing tactile feedback to the user and automatically maintaining stable positioning without requiring active control, thus achieving both ease of operation and positioning stability.
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
Provides stable frictional force and improved rotational positioning, enhancing stability and durability of the supporting unit.
Implementation Method 1
The first part generates a frictional force with the second part through the adjusting module
Implementation Method 2
The adjusting member is movably connected to the rod body to adjust the frictional force
Data Source
AI summary
A supporting unit includes a first part, a second part, and an adjusting module. The first part includes a first connecting member and a supporting member. The supporting member is detachably connected to the first connecting member. The first connecting member is rotatably connected to the second part. The adjusting module is disposed in the first part and the second part. The adjusting module includes a rod body, a friction component, and an adjusting member. The rod body is connected to the second part. The friction component is movably connected to the rod body and is located between the first connecting member and the adjusting member. The first part generates a frictional force with the second part through the adjusting module. The adjusting member is movably connected to the rod body to adjust the frictional force.