Door Handle Indicator for Multi-Handle Laundry Appliance Recognition
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Solution Overview
Problem
Laundry care devices often have multiple handle units, making it difficult for users to intuitively identify the correct handle for opening, especially in low-light conditions, which can lead to incorrect usage and potential damage to the appliance.
Innovation Solution
A door handle indicator is integrated into the door handle unit, providing visual differentiation through a wedge-shaped, arrow-shaped, or mushroom-shaped design with insertion bevels and a circumferential projection, allowing easy recognition of the correct opening handle, eliminating the need for protruding handle elements and reducing the risk of user error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple door handle units are provided on the door unit, then the appliance can be opened from either side or with hinge changes, but it becomes difficult for users to intuitively identify the correct handle for opening
Solution Approach 1:
The patent applies visual differentiation through color-coded indicators on door handle units. The indicator element is configured to display different colors or visual patterns to clearly mark the correct handle for opening, enabling users to quickly identify the functional handle among multiple handles without confusion.
2Illumination intensity
If LEDs are integrated into the door handle element to improve visibility, then the handle becomes clearly visible in poor lighting, but electrical conductors must be routed to the door unit which increases complexity and cost
Solution Approach 1:
The patent replaces complex electrical LED systems with a simple, non-electrical visual indicator element. This indicator can be a color-coded label, reflective surface, or simple optical feature that requires no power source, wiring, or electronic components, thereby eliminating the complexity of electrical routing while maintaining clear visibility.
3Illumination intensity
If protruding handle elements are used to improve visibility, then the handle is clearly visible, but the construction becomes more complex and manufacturing costs increase
Solution Approach 1:
The patent applies visual differentiation locally on the door handle unit through an indicator element that can be integrated into the existing handle structure. Rather than modifying the entire handle or adding protruding elements, the indicator is applied to specific areas of the handle to provide visual cues without altering the overall simple construction.
4Adaptability or versatility
If the door unit is installed in darker rooms to accommodate appliance placement, then the appliance can be positioned conveniently, but it becomes difficult to quickly identify the correct handle unit
Solution Approach 1:
The patent uses color-coded or visually distinct indicator elements on the door handle that are visible in low-light conditions. These indicators may use high-contrast colors, reflective materials, or luminous features that do not require electrical power but provide clear visual identification in darker environments where the appliance is installed.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The present invention relates to a laundry care device (1) for caring for objects, wherein the laundry care device (1) comprises a housing (5) and a receiving container (6) rotatably mounted in the housing (5), wherein the housing (5) comprises a loading side (11) and side walls (9), and wherein the loading side (11) comprises an opening (13) designed for loading the receiving container (6). Furthermore, the laundry care device (1) comprises a door unit (3), wherein the door unit (3) is designed for closing the opening (13) of the loading side (11), and wherein the door unit (3) comprises a door frame unit (18).In a closed state of the door unit (3) a rear side (18a) of the door frame unit (18) faces the receiving container (6) of the laundry care appliance (1), wherein the door frame unit (18) comprises at least one door handle unit (35), wherein a receiving device (41) is formed in the at least one door handle unit (35) and a door handle indicator (43) is received in the receiving device (41).