Snap-Fit Hinge Assembly for Simplified Dishwasher Door Installation
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Solution Overview
Problem
The existing hinge mechanisms for dishwashers are complex and inefficient in terms of assembly and production, with many components leading to low efficiency and high production costs.
Innovation Solution
A hinge assembly featuring a hinge friction sleeve with an inserting groove and an L-shaped hinge with snap-fitting components, allowing for simple assembly and disassembly, and a dishwasher design that incorporates this assembly for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional hinge mechanism with multiple components is used, then the door can be opened and closed, but the structure becomes complex and assembly efficiency decreases
Solution Approach 1:
The patent combines multiple hinge components (hinge body, friction sleeve, snap-fitting elements) into a single integrated hinge assembly. The hinge body and friction sleeve are pre-assembled with snap-fitting connections during manufacturing, reducing the number of separate parts that need to be handled during installation while maintaining all necessary functions for door operation.
Solution Approach 2:
The hinge assembly is segmented into functional modules: the hinge body for rotational movement, the friction sleeve for controlled damping, and snap-fitting elements for secure attachment. This modular segmentation allows for simplified assembly where each module performs its specific function without requiring complex interactions between components.
2Reliability
If a traditional hinge mechanism with many components is used, then the door can be opened and closed, but production efficiency decreases
Solution Approach 1:
The friction sleeve and snap-fitting elements are pre-assembled with the hinge body during manufacturing. This preliminary assembly ensures proper positioning and connection before the hinge is installed in the dishwasher, eliminating the need for complex alignment and assembly operations during production or installation, thereby significantly improving assembly efficiency.
3Device complexity
If a simple hinge structure is used, then assembly is convenient, but the door may fall off the hinge shaft during rotation
Solution Approach 1:
The friction sleeve acts as an intermediary component between the door and hinge shaft. It provides controlled friction to prevent the door from sliding off the hinge shaft during rotation while allowing smooth opening and closing motion. The snap-fitting elements serve as mechanical intermediaries that secure the friction sleeve to the hinge body, ensuring reliable retention without requiring complex structural designs.
Data Source
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AI summary
A hinge assembly for a dishwasher and a dishwasher having the same are provided. The hinge assembly (100) includes: a hinge friction sleeve (11) having an inserting groove (111), in which the inserting groove (111) extends along a length direction of the hinge friction sleeve (11) and has a first end provided with a snap-fitting rod (112) and a second end provided with a snap-fitting portion (113); and an L-shaped hinge (12) having a horizontal limb (121) fitted within the inserting groove (111), in which the horizontal limb (121) has a first end snap-fitted with the snap-fitting rob (112) and a second end provided with an open axial groove (1212) fitted with the snap-fitting portion (113), the snap-fitting portion (113) is snap-fitted within the open axial groove (1212) to close an opening of the open axial groove (1212), and an upper edge of the open axial groove (1212) is spaced apart from an upper edge of the snap-fitting portion (113) at a predetermined distance.