Reinforced Washer Door Handle Cover Without Lever Obstruction
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Solution Overview
Problem
The existing mechanical design of laundry treatment appliances' front door opening mechanisms is prone to deformation and damage when users attempt to unlock the door, as they often mistakenly apply force to the fixed handle cover instead of the movable handle lever, leading to potential breakage or obstruction of the operating opening.
Innovation Solution
A reinforced handle cover is implemented using a support plate, either through heat treatment or tight-fit assembly, to enhance its mechanical strength without increasing the size of the operating opening, ensuring it can withstand user forces without obstructing the handle lever's rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the handle cover is replaced with a more robust component having a larger thickness to withstand external forces, then the strength and reliability of the handle cover is improved, but the operating opening of the handle lever is narrowed and its operation is obstructed
Solution Approach 1:
The support plate is positioned on the rear surface of the handle cover, utilizing the depth dimension of the handle cover structure. This allows the reinforcement to be placed in a dimension that does not interfere with the front-facing operating opening, effectively adding strength without obstructing the lever's rotation path
Solution Approach 2:
The support plate is nested within the handle cover structure, specifically positioned on the rear surface and integrated into the overall handle assembly. This nested configuration allows the reinforcement element to be contained within the existing structural envelope without protruding into the operating space
2Reliability
If a mechanical reinforcement is added to the handle cover, then the reliability of the handle cover is improved, but the device complexity increases
Solution Approach 1:
The support plate is designed as a thin planar element rather than a bulky three-dimensional structure. This thin-film approach provides the necessary reinforcement while minimizing additional material volume and structural complexity, allowing the reinforcement function to be added with minimal impact on the overall assembly complexity
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 reinforced handle cover effectively prevents deformation and maintains the operational integrity of the handle lever, ensuring proper locking and unlocking functionality while maintaining an unobstructed rotation and aesthetically concealing the lock mechanism.
Implementation Method 1
A support plate (15) is mounted to an internal surface of the handle cover (8) facing the handle (7) to reinforce and support the same
Implementation Method 2
In the case of heat treatment, a certain number of bosses on the inner surface of the handle cover are heated to be deformable and reshapable to establish a shape-based connection with the support plate
Data Source
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AI summary
The present invention relates to a laundry treatment appliance (1) comprising a front door having a mechanically strengthened front door opening mechanism. The present invention more particularly relates to a laundry washing and/or drying appliance comprising a rotary drum in which the laundry is placeable, an electric motor rotating the rotary drum and a front door (3) allowing access into the rotary drum for loading or unloading laundry through an access opening (2), the front door (3) being openable around a door hinge (5) in the manner that a lock mechanism (6) releasably secures an engagement end (13) such that the front door (3) is lockable and unlockable, the lock mechanism (6) comprising a handle (7) covered by a handle cover (8) and in mechanical communication with a hook lever (10) that is drivable by the handle (7), whereby the engagement end (13) is actuable to lock or unlock the front door (3).