Sun Visor Vanity Lamp Magnetic Button Return Structure

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Solution Overview

Problem

Existing vanity lamps in vehicles fail to turn off reliably when sun visors are folded due to impacts, button parts sagging, or foreign matter interference, leading to damage and improper operation.

Innovation Solution

A structure using magnets, specifically permanent magnets or paper magnets, is mounted in the vanity lamp button and sun visor to provide repulsive and attractive forces, ensuring the button returns to a predetermined position when the sun visor is folded, thus turning off the lamp smoothly and preventing damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a button part is used to turn off the vanity lamp when the sun visor is folded, then the lamp can be turned off automatically, but the button part may sag or move from its predetermined location due to impacts, causing the lamp to fail to turn off

Engineering Contradiction:

Improveautomatic lamp turning offVSAvoidbutton part position stability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the purely mechanical button positioning system with a magnetic field-based system. Magnets are embedded in both the button part and the sun visor, creating magnetic attraction forces that hold the button in its predetermined position. This magnetic field substitution prevents the button from sagging or moving due to impacts, while still allowing it to be pressed when needed to turn off the lamp.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the button part protrudes from the vanity lamp to be pressed by the sun visor, then the lamp can be turned off when folded, but the protruding button may damage the sun visor surface or fail to operate smoothly

Engineering Contradiction:

Improvelamp turning off functionVSAvoidsun visor surface damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent uses magnetic fields to replace the protruding mechanical button structure. The magnets embedded in the button and sun visor create an attractive force that allows the button to be pressed by the sun visor without physically protruding. This eliminates the risk of the button damaging the sun visor surface while maintaining the automatic turning off function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If foreign matter interferes with the button part movement, then the button may not return to its predetermined location, but adding mechanical constraints to prevent this may increase device complexity

Engineering Contradiction:

Improvebutton part return to positionVSAvoidmechanical constraint structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses magnetic fields to replace complex mechanical constraint structures. The magnets embedded in the button and sun visor create a magnetic attraction force that automatically guides and holds the button in its predetermined position. This magnetic field-based approach ensures the button returns to the correct position without requiring additional mechanical constraints, thereby maintaining reliability while avoiding increased device complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 magnetic interaction stabilizes the button's operation, preventing the lamp from turning on unintentionally, conserving energy, and protecting the sun visor surface from damage.

Implementation Method 1

providing magnets mounted in the button part of the vanity lamp and a portion of the sun visor facing the button part to position the button part at a predetermined location due to magnetic force

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS12597569B2Structure for turning off vanity lamp for vehicle using sun visor

Publication Date: 2026.04.07 DAEHAN SOLUTION

AI summary

In the present invention, magnets are mounted in a button part of a vanity lamp exposed toward a vehicle interior and a portion of a sun visor facing the button part to provide both a repulsive force and an attractive force so that a sun visor returns to a predetermined location with respect to the button part when the sun visor is folded, thereby preventing a phenomenon in which the vanity lamp is not turned off and a surface of the sun visor is damaged when the sun visor is folded and conveniently using the sun visor. Particularly, in the present invention, the vanity lamp can be turned off through only a simple manipulation of folding the sun visor without separate power by using permanent magnets as the magnets.