Automatic Magnetic Buckle with 360-Degree Rotation

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Solution Overview

Problem

Existing magnetic buckles have an unstable connection between the buckle base and clamping head due to unreasonable structure design, limiting their ability to rotate 360° and making them inconvenient to use, as they require two hands and can only be fastened and separated at a single angle.

Innovation Solution

An automatic magnetic buckle design featuring a clamping head with a cavity containing a buckle subassembly and a buckle base with matching magnetic subassemblies, along with a fastener unfolding device and pressure spring, allowing for secure connection and 360° rotation, enabling easy separation and convenient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a magnetic subassembly is added to the buckle, then the automatic connection function is improved, but the connection stability between buckle base and clamping head deteriorates

Engineering Contradiction:
Improveautomatic connection functionVSAvoidconnection stability
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The buckle is divided into separate magnetic connection components (magnetic blocks in clamping head and buckle base) that can automatically attract and connect. The segmentation allows independent optimization of each component's magnetic properties while maintaining overall connection stability through distributed magnetic forces across multiple contact points.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The magnetic subassembly integrates magnetic blocks, elastic components, and clamping structures into a unified system. The magnetic attraction force merges with mechanical elastic force and physical clamping to create a multi-mechanism connection that overcomes the instability of magnetic-only connection.

Inventive Principle:
Principle #5Merging (Combining)

2Device complexity

If the buckle is designed in a flat shape with single-angle fastening, then the structure is simple, but the ease of operation deteriorates as it requires two hands and cannot rotate 360°

Engineering Contradiction:
Improvestructure simplicityVSAvoidconvenience of fastening and separation
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The buckle transitions from a static flat design to a dynamic structure where the clamping head can rotate 360° relative to the buckle base. The elastic components and magnetic subassembly enable dynamic movement during fastening and separation, allowing one-handed operation and flexible positioning while maintaining structural simplicity.

Inventive Principle:
Principle #15Dynamics

3Extent of automation

If the clamping head and buckle base are magnetically attracted, then the automatic magnetic connection is improved, but the separation capability deteriorates as they cannot be easily disconnected

Engineering Contradiction:
Improvemagnetic attraction connectionVSAvoidseparation capability
Core Design Contradiction:
Extent of automationVSEase of operation

Solution Approach 1:

The elastic components are pre-loaded to create a mechanical separation force that counteracts the magnetic attraction force. When separation is needed, this pre-stored elastic energy is released to push the clamping head away from the buckle base, overcoming the magnetic hold without requiring excessive manual force.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The magnetic blocks and clamping surfaces are designed with curved geometries that allow for easy disengagement. The spherical or rounded contact surfaces reduce friction and enable smooth separation motion, allowing the magnetic connection to be broken with minimal force applied at any angle during rotation.

Inventive Principle:
Principle #14Spheroidality (Curvature)

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 stable and firm connection between the buckle base and clamping head, allowing for easy separation and convenient operation at any angle, reducing time and effort required for use.

Implementation Method 1

the said clamping head and the buckle base are set with magnetic subassemblies which are mutually attracted

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Data Source

PatentEP3616552B1An automatic magnetic buckle and its use method
Publication Date: 2023.07.05 CHU FANG MENG
  • EP3616552B1 patent drawingFigure 1
  • EP3616552B1 patent drawingFigure 2
  • EP3616552B1 patent drawingFigure 3

AI summary

The present invention discloses an automatic magnetic buckle, which comprises a matching clamping head (1) and a buckle base (2). The said clamping head (1) comprises a clamping head housing, and the said clamping head housing has a cavity extending through the upper and lower ends of the clamping head housing. The said cavity is set with a buckle subassembly, the said buckle base (2) is set with a buckle head (21) matching with the said buckle subassembly, and the said clamping head (1) and the buckle base (2) are set with magnetic subassemblies which are mutually attracted. Clamping head (1) and buckle base (2) are attracted together through the matching of the magnetic subassembly. The buckle subassembly is matched with the buckle head (21) to securely connect the clamping head (1) and the buckle base (2). The present invention also discloses a method of using the automatic magnetic buckle. The fixed connection between the buckle base (2) and the clamping head (1) can be easily realized by the action of the magnetic subassembly, and the connection is stable and firm. The buckle base (2) and the clamping head (1) can be conveniently separated by the design of the fastener unfolding device.