Laundry Door Assembly With Hidden Fasteners and Touch Interface
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The assembly of domestic laundry appliance doors often requires the use of various mechanical fasteners, which can be aesthetically unpleasing and difficult to conceal, compromising the smooth appearance and ease of maintenance.
Innovation Solution
A method involving the assembly of an inner door subassembly with an intermediate door frame and outer door screen, where the intermediate door frame is adhesively bonded to both subassemblies, and a user interface controller is affixed through an aperture to hide mechanical fasteners, using adhesives and a touch film to create a seamless interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical fasteners are used to assemble door components, then assembly strength and structural integrity are improved, but aesthetic appearance deteriorates due to visible fasteners
Solution Approach 1:
The patent extracts the mechanical fasteners from the visible exterior surfaces of the door assembly. Fasteners are positioned only on interior surfaces or hidden behind decorative panels, allowing the exterior to maintain a smooth, fastener-free appearance while still providing the necessary structural connection through adhesive bonding and hidden mechanical means.
Solution Approach 2:
The patent introduces adhesive bonding as an intermediary connection method between door components. Adhesives provide the structural strength typically achieved by mechanical fasteners, while allowing surfaces to remain smooth and aesthetically pleasing. Decorative panels serve as additional intermediaries that conceal any remaining visible fasteners.
2Strength
If mechanical fasteners are used to assemble door components, then structural integrity is improved, but ease of maintenance deteriorates due to difficulty in concealing and accessing fasteners
Solution Approach 1:
The patent segments the door assembly into modular components (door panel, decorative panels, interior framework) that can be independently accessed and maintained. This segmentation allows maintenance personnel to access hidden fasteners through designated service access points without disassembling the entire door assembly, thereby maintaining structural integrity while improving ease of maintenance.
Solution Approach 2:
The patent uses removable decorative panels and service access points as intermediaries that provide controlled access to hidden fasteners and connection points. These intermediaries maintain the aesthetic appearance during normal operation but can be easily removed for maintenance activities, then reinstalled to restore the smooth appearance.
3Reliability
If multiple layers and mechanical fasteners are used in door assembly, then component attachment reliability is improved, but device complexity increases
Solution Approach 1:
The patent merges multiple attachment methods (adhesive bonding, mechanical fastening, and decorative panel integration) into a unified assembly system. This consolidation reduces the number of separate assembly operations and components needed, thereby maintaining reliable component attachment while reducing overall device complexity.
Solution Approach 2:
The patent designs door components with multi-functionality, where decorative panels simultaneously serve aesthetic purposes and provide access points for maintenance. The adhesive bonding system provides both structural attachment and surface smoothing functions. This multi-functionality reduces the need for separate components, thereby reducing complexity while maintaining reliability.
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 approach effectively conceals mechanical fasteners, providing a clean and aesthetically pleasing appearance while maintaining ease of assembly and access for maintenance, enhancing the overall user experience.
Implementation Method 1
adhesively bonding an intermediate door frame to the inner door subassembly to form an intermediate door subassembly
Implementation Method 2
adhesively bonding the inner surface of the outer door screen to the intermediate door subassembly
Data Source
AI summary
A laundry appliance door assembly with an integrated user interface is adapted to eliminate any visible mechanical fasteners to create an aesthetically smooth appearance. The door assembly includes an inner door assembly to support an inner window, an intermediate door frame that houses the user interface controller, and an outer door screen with embedded touch film. The inner door assembly carries a hinge with wiring harness assembly and the intermediate door frame is adhesively bonded with the inner door assembly to form an intermediate door assembly. The outer door screen includes a touch film adhesively attached to the screen with a roller apparatus of low durometer. The outer door screen is then adhesively bonded to the intermediate door frame to complete the door assembly. The intermediate door frame is adhesively bonded to the front of the inner door assembly along with a hinge cover and a handle cover adhesively bonded to the back of the inner door assembly hides any visible mechanical fasteners of the door assembly.