Door Armrest Switch Layout for Proximity Sensing and Hidden Illumination
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Solution Overview
Problem
Existing conveyance interior parts face challenges in suitably disposing proximity sensors, light emission bodies, and push switches while maintaining design aesthetics and ease of assembly.
Innovation Solution
A conveyance interior part configuration with a cover material, printed layer, light emission body, proximity sensor, and switch device, where the proximity sensor is disposed on the rear surface of the cover material, the light emission body emits light based on sensor detection, and the push switch is positioned to correspond with the printed surface, allowing for improved detection accuracy and assembly without design interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the proximity sensor is disposed on the rear surface side of the cover material closer to the cover material, then the detection accuracy of the proximity sensor is improved, but the assembly complexity increases
Solution Approach 1:
The proximity sensor, light emission body, and push switch are integrated into a single switch device assembly. This merging of components simplifies the overall assembly process while allowing the proximity sensor to be optimally positioned on the rear surface side of the cover material for improved detection accuracy.
Solution Approach 2:
The conveyance interior part is divided into distinct functional layers: the cover material with optical transparency, the printed layer with operation icons, and the switch device assembly containing the proximity sensor, light emission body, and push switch. This segmentation allows each component to be optimized independently while maintaining ease of assembly.
2Adaptability or versatility
If multiple components (proximity sensor, light emission body, push switch) are disposed inside the conveyance interior part, then the functionality is improved, but the ease of assembly deteriorates
Solution Approach 1:
The proximity sensor, light emission body, and push switch are combined into an integrated switch device assembly that is disposed on the rear surface side of the cover material. This merging maintains all required functionalities while simplifying the assembly process by reducing the number of separate assembly steps.
Solution Approach 2:
The switch device assembly serves multiple functions: the proximity sensor detects human approach, the light emission body illuminates the operation icons, and the push switch detects pressure input. This multi-functional integration improves ease of assembly while maintaining comprehensive functionality.
3Loss of information
If the light emission body continuously emits light, then the operation unit is always visible, but the energy consumption increases
Solution Approach 1:
The light emission body emits light periodically based on detection signals from the proximity sensor. When the sensor detects a human approach, the light emission body illuminates the operation icons; when no human is detected, the light emission is stopped or reduced. This periodic action ensures operation unit visibility when needed while minimizing energy consumption during idle periods.
Solution Approach 2:
The proximity sensor provides feedback about human presence to the control system, which then controls the light emission body accordingly. This feedback mechanism ensures the operation unit is visible when a user approaches while reducing energy consumption when no user is present.
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 configuration enables suitable component placement, enhances detection precision, prevents design impact, facilitates easy assembly, and reduces erroneous operations while maintaining a flat surface appearance.
Implementation Method 1
a light emission body which is disposed on a rear surface side of the cover material and the printed layer and emits light toward the cover material and the printed layer
Implementation Method 2
a proximity sensor which is disposed on a rear surface side of the cover material and detects an approach of a detection target
Implementation Method 3
a switch device which includes a push switch disposed on a rear surface side of the cover material and detecting pressure from the cover material side
Data Source
AI summary
An armrest of a door lining includes: a skin material; a printed layer which is disposed on a rear surface side of the skin material; a light emission body which is disposed on a rear surface side of the skin material and the printed layer and displays a printed surface on the surface of the skin material; a proximity sensor which is disposed on a rear surface side of the skin material and detects an approach of a detection target; a control unit which controls the light emission body based on a detection signal of the proximity sensor; and a switch device which is disposed on a rear surface side of the skin material and detects pressure from the skin material side. The control unit controls the light emission body to emit light while the proximity sensor detects the detection target. The proximity sensor is disposed on a rear surface side of the skin material and is disposed on a front surface side of the switch device and the light emission body.