Faucet Friction Ring for Preventing Valve Stem Self-Movement
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Solution Overview
Problem
Existing faucet assemblies face issues with self-movement of the valve stem due to insufficient internal friction, leading to unwanted changes in water flow or temperature, which limits faucet handle design and requires careful control of handle size and shape.
Innovation Solution
A friction ring is integrated into the faucet assembly, featuring a body with a contact member that slidably engages with the valve stem, applying a friction force in a perpendicular orientation to maintain the valve stem's position over its full range of movement, preventing self-movement and allowing for more design flexibility in the faucet handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internal friction within the valve assembly is increased to prevent handle self-movement, then the handle position stability improves, but the handle size and shape must be carefully controlled which limits design flexibility
Solution Approach 1:
The friction mechanism is segmented from the handle and valve stem into a separate friction ring component. This friction ring is positioned between the handle and valve stem, providing the necessary friction force independently. This segmentation allows the handle design to be optimized for aesthetics and ergonomics without being constrained by friction requirements, while the friction ring can be independently designed and adjusted to provide the needed stability.
2Reliability
If the friction force between the valve stem and valve assembly is increased to prevent self-movement, then the valve stem position stability improves, but the device complexity increases due to additional components
Solution Approach 1:
The friction ring is designed to be integrated into the existing valve assembly structure. It is positioned within the valve body and engages with both the handle and valve stem, combining multiple functions (friction provision, structural support, and alignment) into a single component. This merging approach provides the necessary friction force to prevent self-movement while minimizing the increase in overall device 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 friction ring effectively prevents self-movement of the valve stem, ensuring consistent water flow and temperature control, and allows for a wider range of faucet handle designs without the need for restrictive size or weight limitations.
Implementation Method 1
The contact member is configured to press against the valve stem to increase a friction force between the contact member and the valve stem over a full range of movement of the valve stem
Data Source
AI summary
Disclosed is a friction ring including a body and a contact member. The body is configured to couple the friction ring to at least one of a faucet assembly or a faucet valve assembly. The contact member is disposed on the body. The contact member is configured to slidably engage with a valve stem of the faucet valve assembly. The contact member is further configured to press against the valve stem to increase a frictional force between the contact member and the valve stem over a full range of movement of the valve stem.