Middle-Illuminated Key Switch With Guide Core Light Path
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional illuminated button switches suffer from a light shielding effect, where the light does not spread to the middle and outside, resulting in a poor luminous effect due to their internal structural design.
Innovation Solution
The light-emitting element, such as an LED lamp, is embedded in the middle part of the button switch and extends upward through a guide core, combined with a guide structure formed by the guide shaft, guide hole, and guide block, allowing light to emit uniformly from the middle, enhancing the luminous effect and ensuring accurate up and down movement of the guide core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light-emitting element is embedded in the side of the button switch, then the button switch can generate light effects, but the internal structure causes light shielding, preventing light from reaching the middle and outside, resulting in poor luminous effect
Solution Approach 1:
The light-emitting element is repositioned from the side embedding to the bottom surface of the button switch, changing the spatial dimension of light introduction. This allows light to enter from below and travel upward through the guide core, bypassing the light-blocking internal structures that would obstruct side-mounted lighting.
Solution Approach 2:
A guide core with light-transmitting properties is introduced as an intermediary component. This guide core serves as a light conduit, transmitting light from the bottom-mounted element through the middle of the button switch to the top surface, ensuring uniform illumination without being blocked by internal mechanisms.
2Illumination intensity
If the light-emitting element is embedded in the middle part of the button switch, then light can emit uniformly from the middle, but the guide structure is required to ensure accurate up and down movement
Solution Approach 1:
The guide core serves multiple functions simultaneously: it acts as a light-transmitting medium for uniform illumination and as a mechanical guide structure for the up-and-down movement of the button. This multi-functionality eliminates the need for separate guiding components, maintaining manufacturing precision while achieving uniform light emission.
Solution Approach 2:
The guiding function and light transmission function are merged into a single integrated guide core structure. This consolidation ensures that the light path and mechanical movement path are aligned, maintaining manufacturing precision while achieving uniform illumination from the middle of the button switch.
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
This configuration achieves a good light-emitting effect in the middle part of the button switch and improves the accuracy of the on and off functionality by guiding the guide core vertically, ensuring effective light distribution and precise switch operation.
Implementation Method 1
a light-emitting element (such as a light-emitting diode) that directly extends into the switch is usually provided on a circuit board to achieve a light-emitting effect
Implementation Method 2
The light enters the light guiding rod through an end portion of the light guiding rod and then emits out the light guiding rod from another end portion of the light guiding rod and a side surface adjacent to the another end portion toward the cap body
Implementation Method 3
a spring located under the guide core
Implementation Method 4
a conduction assembly located on the side of the guide core, and a spring located under the guide core are respectively disposed in the accommodating cavity
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A middle illuminated button switch is provided, including a printed circuit board (PCB), a base and a cover. A guide core is arranged between the base and the cover, a through hole is arranged at the bottom of the base and under the guide core. A light guide groove is provided at the lower end surface of the guide core. A light-emitting element is arranged on the upper end of the PCB, and the light-emitting element is inserted into the base from the through hole and embedded in the light guide groove. Since the light-emitting element is embedded in the base from the bottom to the top, and the light is emitted to the outside from the middle through the guide core, so as to realize the light-emitting effect in the middle of the button. The present disclosure can realize the middle of the button switch to emit light with good luminous effect.