A door assembly for a laundry treatment device and method of operation
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Solution Overview
Problem
The existing door assemblies for laundry treatment devices, such as washing machines and dryers, face challenges in achieving a uniform aesthetic appearance on curved or tilted front walls, require multiple parts and configurations for different handle positions, and are costly and time-consuming to manufacture due to the need for various handle configurations and reversibility.
Innovation Solution
A door assembly with a handle-carrying element that can rotate between two angled planes, allowing the handle to be positioned in multiple locations without changing the overall shape, enabling easy adaptation to different handle configurations and maintaining a uniform appearance on curved or tilted surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple door configurations with different handle positions are used to accommodate various installation locations, then adaptability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The handle-carrying element is designed to be rotatable relative to the door frame, allowing it to dynamically change position between a first position and a second position. This dynamic capability enables the same door assembly to adapt to different installation configurations (left-hand or right-hand opening) without requiring multiple static door variants, thereby improving adaptability while reducing complexity.
Solution Approach 2:
The door assembly is designed with universal functionality through the rotatable handle-carrying element that can assume multiple positions. This single door design serves multiple functions: it can be installed with left-hand opening, right-hand opening, or different handle heights, eliminating the need for separate door assemblies for each configuration and reducing overall system complexity.
2Adaptability or versatility
If multiple door configurations with different handle positions are manufactured, then adaptability is improved, but manufacturing time and cost increase
Solution Approach 1:
The rotatable handle-carrying element allows a single door assembly to be configured for different handle positions during installation rather than requiring pre-manufactured variants. This eliminates the need for multiple manufacturing lines or complex assembly processes for different door types, significantly improving manufacturing efficiency and productivity.
Solution Approach 2:
The door assembly is segmented into independent components: the door frame and the separately positionable handle-carrying element. This segmentation allows the handle to be positioned and fixed at different locations without affecting the main door structure, enabling flexible configuration during installation and simplifying the manufacturing process by producing a standardized door frame once.
3Shape
If the door assembly uses a uniform surface design on curved or tilted front walls, then aesthetic appearance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The rotatable handle-carrying element provides design flexibility that accommodates variations in door installation angles and positions on curved or tilted front walls. By allowing handle position adjustment, the same door assembly can be adapted to different aesthetic requirements without requiring high-precision custom manufacturing for each installation scenario.
Data Source
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AI summary
The present invention refers to a door assembly (10; 110) for a laundry treatment device (1; 100), apt to open and/or close an opening (4; 104) defined in said laundry treatment device, said door assembly comprising a frame (5, 6; 105, 106), said frame including: • a front door frame (6; 106) forming a front surface (6a;106a) of the door assembly, said front surface defining a front plane (PA); • a rear door frame (5; 105) forming a rear surface (5b; 105b) of said door assembly, said rear surface defining a closure plane (PB), said front plane (PA) and said closure plane (PB) intersecting one the other so as to form an angle (α) different from 0° and 180°; and • a handle-carrying element (30; 130) interposed between said rear door frame (5; 105) and front door frame (6; 106), and a handle (31; 131) carried by said handle-carrying element, said handle-carrying element being apt to be mounted in at least a first and a second alternative positions, so that said handle (31; 131) can be positioned on said frame at least in a first and second different locations (L1; L2; L3; L4).