Earbud Cradle Magnetic Hinge for Stable Semi-Automatic Opening
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Solution Overview
Problem
Conventional cradles for earbuds face issues with covers that cannot remain open, and designs that increase in size when hinges are opened to facilitate easy earbud removal, leading to manufacturing difficulties and durability concerns.
Innovation Solution
A cradle design featuring a hinge mechanism with magnets positioned to create a repulsive force for semi-automatic opening and closing, using a metal material to maintain structural integrity and minimize size, with magnets oriented to maximize repulsive force for ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a conventional hinge mechanism is used for the cradle cover, then the structure is simple and easy to manufacture, but the opening and closing operation requires manual effort and lacks automation
Solution Approach 1:
The patent replaces the conventional mechanical spring-based automatic closing mechanism with a magnetic field-based system. Magnets are embedded in the hinge portion to generate magnetic repulsive force that automatically closes the folder body when opened, eliminating the need for complex mechanical springs while achieving semi-automatic operation
Solution Approach 2:
The patent introduces magnets as an intermediary element between the folder body and main body. These magnets create a magnetic field that acts as a mediator to provide automatic closing force, simplifying the hinge mechanism while adding automation functionality
2Volume of moving object
If the cradle is designed with minimal size for portability, then the device is compact and portable, but the hinge mechanism and opening/closing operation become constrained
Solution Approach 1:
By replacing the mechanical spring mechanism with a magnetic field-based closing system, the patent reduces the space required for the hinge mechanism. The magnetic field can act over a distance, eliminating the need for large mechanical components, thus maintaining compact cradle size while ensuring ease of operation
Solution Approach 2:
The patent utilizes the magnetic field dimension, which operates in three-dimensional space, to provide closing force without requiring additional linear space. This allows the cradle to maintain minimal size while the magnetic repulsive force effectively opens and closes the folder body through spatial magnetic interaction
3Reliability
If the hinge mechanism is made robust and durable, then the structural integrity is enhanced, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical hinge components with a simplified structure that incorporates magnets. This magnetic-based system reduces the number of moving parts and mechanical wear points, enhancing reliability while actually simplifying manufacturing compared to traditional robust mechanical hinges
Solution Approach 2:
The hinge portion combines magnetic materials with structural materials to create a composite component that provides both durability and magnetic functionality. This composite approach allows the hinge to be robust and reliable while maintaining manufacturing simplicity through integrated design
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 allows for a compact, durable cradle with simplified manufacturing and reduced parts, enabling easy earbud insertion and removal while maintaining a stable open state, enhancing user convenience.
Implementation Method 1
the first magnet and the second magnet are disposed so as to maintain a repulsive force therebetween while the folder body is converted into the opened state from the closed state
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(b)
Figure 3
AI summary
A cradle includes a main body having a seating portion in which an earbud is seated, a folder body capable of being converted between a closed state and an opened state of the seating portion, and a hinge portion configured to couple the folder body to the main body, wherein the hinge portion includes a first hinge coupled to the main body, a second hinge coupled to the folder body, a shaft extending through the first hinge and the second hinge, a first magnet coupled to the first hinge, and a second magnet coupled to the second hinge or to the folder body, and wherein the first magnet and the second magnet maintain a repulsive force therebetween while the folder body is converted into the opened state from the closed state. The semiautomatic opening structure of the cradle is simplified so as to simplify the manufacturing process and reduce manufacturing costs.