Sensor-Based Washer Door Unlocking for Easier Front Loading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Front-loading laundry machines require users to perform two distinct movements to open the door, which can lead to inconvenience and the risk of accidentally activating program parameters due to the complexity of door opening mechanisms.
Innovation Solution
Incorporating sensors, such as capacitive or optical sensors, on the door or front wall to detect contact or proximity, allowing the door to be unlocked and opened without manual handle activation, and using lighting elements to guide the user on where to grip the door for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a door opening button is arranged in the front wall near the locking mechanism, then the door can be opened by pushing the button and swiveling, but the user must execute two movements in different directions which reduces operating convenience
Solution Approach 1:
The patent replaces the mechanical button-pushing system with a sensor-based detection system. The sensor detects the user's hand approach or contact without requiring mechanical actuation, eliminating the need for the two-step button push and swivel motion. This substitution of mechanical operation with sensor detection simplifies the door opening mechanism while improving ease of operation.
Solution Approach 2:
The door opening system performs the unlocking function automatically when the sensor detects the user's presence or contact. The system serves itself by detecting the user's intent to open the door and automatically deactivating the locking mechanism, eliminating the need for the user to manually actuate a button or handle.
2Loss of information
If a large-surface door opening lever with numerous operating elements is placed on the door, then display visibility is improved, but the risk of accidental setting changes increases
Solution Approach 1:
The patent extracts the door opening function from the complex control panel with numerous operating elements. By placing a simple sensor on the door or front wall and separating the door opening mechanism from the program selection controls, the system eliminates the risk of accidental setting changes while maintaining display visibility through the lighting elements on the door opening lever.
Solution Approach 2:
The patent segments the door opening function from the program control functions. The sensor on the door handles only the door opening task, while the operating elements on the lever handle program selection. This segmentation prevents accidental activation of program parameters while the user is attempting to open the door.
3Reliability
If manual handle activation is required to unlock the door, then the locking mechanism remains secure, but forceful door pulling is required which reduces operating convenience
Solution Approach 1:
The patent replaces the manual handle activation mechanism with a sensor-based detection system. The sensor detects the user's hand approach or contact and automatically triggers the locking mechanism deactivation, eliminating the need for forceful door pulling while maintaining security through controlled automatic unlocking.
Solution Approach 2:
The sensor detects the user's intent to open the door before actual contact or pulling occurs. The locking mechanism is deactivated in advance when the sensor detects the user's hand approach, so the door can be opened smoothly without requiring forceful pulling or manual handle activation.
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
Enhances door opening convenience by eliminating the need for forceful door pulling and reducing the likelihood of accidental setting changes during operation, providing a seamless and intuitive user experience.
Implementation Method 1
Incorporating sensors, such as capacitive or optical sensors, on the door or front wall to detect contact or proximity
Implementation Method 2
Incorporating sensors, such as capacitive or optical sensors, on the door or front wall to detect contact or proximity
Data Source
AI summary
A front-loading machine for treating laundry includes a loading opening, a hinged door, a locking mechanism and an operating device. The loading opening is disposed on a front wall of the machine. The hinged door is receivable by a receiving area on the front wall so as to close the loading opening. The locking mechanism is configured to hold the door in a closed position. The operating device is configured to activate and deactivate the locking mechanism. The operating device includes a sensor configured to detect a contact or a contact-free incursion into a detection zone thereof. The sensor is disposed on at least one of the door and the receiving area on the front wall.