Faucet Handle Connection for Fastener-Free Serviceable Retention
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Solution Overview
Problem
Faucet handles are difficult to service or replace due to fastener-based attachment methods, which disrupt the aesthetic quality and require additional components like plugs and friction washers, and can lead to wobble issues over time.
Innovation Solution
A handle connection system that uses annular projections and channels to facilitate tool-less coupling and uncoupling of the handle to the underlying structure, maintaining a consistent rotation and eliminating the need for fasteners and friction washers, thereby maintaining an uninterrupted exterior surface and preventing wobble.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fasteners are used to attach the handle to the valve stem, then the handle is securely retained, but the aesthetic quality is decreased and serviceability is reduced
Solution Approach 1:
The fastening system is divided into separate components: a fastener retained by the handle connection system and a handle retained by the fastener. This segmentation allows the handle to be easily removed by unscrewing the fastener, improving serviceability while maintaining secure retention during normal use.
Solution Approach 2:
A handle connection system acts as an intermediary component between the handle and the valve stem. This intermediate structure provides a threaded bore that receives the fastener, allowing the handle to be securely attached while enabling easy removal through the fastener mechanism without damaging the handle or valve stem.
2Reliability
If fasteners and plugs are used to attach the handle, then the handle is securely retained, but the aesthetic quality is compromised due to interrupted surfaces
Solution Approach 1:
The fastener is extracted from the traditional configuration where it passes through the handle. Instead, the fastener is retained by the handle connection system, allowing the handle surface to remain uninterrupted and aesthetically pleasing while still providing secure retention through the underlying fastening mechanism.
Solution Approach 2:
The fastener is nested within the handle connection system structure rather than protruding through the handle. The handle connection system's threaded bore receives and conceals the fastener, maintaining the handle's aesthetic appearance while ensuring secure attachment through the nested fastening arrangement.
3Reliability
If traditional fastening methods are used, then the handle is securely attached, but additional components like friction washers are needed which increase device complexity
Solution Approach 1:
The handle connection system combines multiple functions into a single integrated component: it provides the threaded bore for the fastener, retains the fastener through its structure, and supports the handle. This merging eliminates the need for separate friction washers and other auxiliary components, reducing overall device complexity while maintaining secure attachment.
Solution Approach 2:
The handle connection system serves multiple functions: it acts as a mounting structure, a fastener retainer, and a support for the handle. This multi-functionality replaces what would traditionally require multiple separate components, simplifying the overall assembly while ensuring reliable handle attachment.
Data Source
AI summary
A faucet includes a handle and a handle connection system. The handle includes an opening and a handle annular projection at least partially extending about the opening. The handle connection system is configured to be partially contained within the opening, threadably coupled to a yoke, and selectively coupled to the handle annular projection. The handle connection system is configured to facilitate rotation of the handle relative to the yoke while the handle connection system is threadably coupled to the yoke.