Touch Sensor Assembly for Refrigerator Special Mode Entry Control
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Solution Overview
Problem
Refrigerators require a special mode for inspection or service, which can be accidentally activated by user carelessness, leading to unintended operation due to the lack of distinct manipulation shapes or separate reset buttons.
Innovation Solution
A touch sensor assembly with a display window and manipulation parts on the refrigerator door, featuring a plate-shaped front panel with integrated touch sensors and a sensor control system that processes touch inputs to prevent simultaneous recognition and adjust sensitivity settings, allowing for intuitive entry into special modes like sensitivity setting, inspection, test, or store display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a general manipulation shape is used for the manipulation part, then ease of operation is improved, but reliability deteriorates due to accidental activation in special modes
Solution Approach 1:
The manipulation part is designed with an asymmetric shape that does not correspond to any single touch sensor, requiring a specific multi-point pressing pattern to activate special modes. This asymmetric design maintains ease of use while preventing accidental activation, as users must intentionally press multiple specific areas simultaneously rather than accidentally triggering a single button.
Solution Approach 2:
The manipulation part is divided into multiple distinct pressing areas that correspond to different touch sensors arranged in a specific pattern. To enter special modes, users must press a specific combination of these segmented areas simultaneously, which prevents accidental activation while maintaining user-friendly operation through clear visual guidance.
2Reliability
If separate reset buttons are provided for special modes, then reliability is improved, but device complexity increases
Solution Approach 1:
The touch sensor assembly serves multiple functions: it detects both general user operations and special mode entry sequences using the same physical structure. The manipulation part acts as both a normal control interface and a special mode activation mechanism, eliminating the need for separate reset buttons while maintaining reliability through its multi-functional design.
Solution Approach 2:
The general manipulation interface and special mode activation mechanism are merged into a single touch sensor assembly. By combining these functions into one integrated system with a specific pressing pattern requirement, the patent avoids adding separate reset buttons or manipulation parts, thus maintaining simplicity while ensuring reliable prevention of accidental special mode activation.
3Ease of operation
If touch sensors are closely attached to the front panel, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The touch sensor assembly is designed to be detachably coupled to the front panel, allowing for dynamic adjustment and repositioning during assembly and maintenance. This detachable coupling mechanism accommodates variations in manufacturing precision while maintaining accurate alignment for optimal touch detection performance, as the assembly can be adjusted after initial installation.
Solution Approach 2:
The coupling structure incorporates localized alignment features and adjustable mounting points at critical positions of the touch sensor assembly. These local quality enhancements ensure precise positioning of the touch sensors relative to the front panel touch areas, compensating for general manufacturing tolerances and maintaining high response accuracy without requiring extremely tight overall manufacturing precision.
Data Source
AI summary
According to an embodiment for a refrigerator, a plurality of touch parts may be manipulated to enter into a special mode, thereby preventing the refrigerator from malfunctioning. The touch sensitivity adjustment of the refrigerator due to the touch manipulation of the refrigerator may be visualized.