Household device door with bar handle
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Solution Overview
Problem
Existing household appliance doors face a design conflict between ease of use and visual appeal, as well as practicality in ergonomics and cleaning, due to the traditional layout of control elements between the handle and door front, which often compromises on space and aesthetics.
Innovation Solution
A household appliance door with a retractable bow handle that integrates operating elements, allowing for ergonomic design and space-saving layout by positioning actuating elements on the handle bar and door front independently, with ventilation openings covered by the handle, and optionally featuring a separate air duct to direct exhaust air past the handle, enhancing user interaction and cleaning ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operating elements are arranged on a separate control panel between the handle and door front, then the control functionality is provided, but the design complexity increases and cleaning becomes more difficult
Solution Approach 1:
The patent merges the door handle and control panel into a single integrated unit. The operating elements are arranged directly on the door handle itself, eliminating the need for a separate control panel structure. This integration reduces design complexity while maintaining full control functionality, as the handle serves dual purposes: mechanical operation and control interface.
Solution Approach 2:
The door handle is designed to perform multiple functions simultaneously: it serves as the mechanical handle for opening/closing the door and as the control panel for operating the appliance functions. This multi-functionality eliminates the need for separate control panel components, thereby reducing overall design complexity while preserving ease of operation.
2Ease of operation
If operating elements are arranged on a separate control panel between the handle and door front, then the control functionality is provided, but the cleaning ease deteriorates due to more surfaces
Solution Approach 1:
By combining the control elements with the door handle into a single integrated component, the patent reduces the total number of separate surfaces that require cleaning. The integrated design means fewer gaps, joints, and separate panels where dirt and grime can accumulate, making the overall structure easier to clean while maintaining full control functionality.
3Ease of operation
If the door handle is made narrow for ergonomic gripping, then the handling comfort improves, but the operating surface area decreases
Solution Approach 1:
The patent arranges operating elements in a linear configuration along the length of the narrow door handle rather than spreading them across a wide surface area. This one-dimensional arrangement allows the handle to remain narrow for ergonomic gripping while still providing sufficient operating surface area through extended linear placement of buttons and controls.
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
The solution provides a user-friendly, aesthetically pleasing, and easily cleanable appliance door with improved ergonomics, reduced need for separate control panels, and efficient ventilation management, while maintaining thermal insulation and intuitive operation.
Implementation Method 1
an air duct is arranged on a rear side of the door handle, which is designed to direct air from the ventilation opening past the handle bar
Implementation Method 2
at least one ventilation opening, in particular for warm air, which is covered by the retracted door handle, in particular the handle bar
Data Source
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AI summary
The domestic appliance door has a door handle (5) with bracket part and a handle bar (4). The handle bar has control element, where the door handle is concealed in the domestic appliance door. An actuating element is arranged on the handle bar. A display element (7) is arranged in a surface of a front door (F) that is adjacent to the concealed handlebar.