Faucet Friction Ring for Stable Valve Stem Positioning
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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 consistent friction force in a perpendicular orientation to prevent self-movement and increase the force required to actuate the handle, thereby minimizing design constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If internal friction within the valve assembly is increased to prevent handle self-movement, then handle stability is improved, but handle size and shape must be carefully controlled which reduces design flexibility
Solution Approach 1:
The friction control function is segmented from the handle and valve stem components and concentrated into a dedicated friction ring component. This allows the handle and valve stem to be designed for their primary functions without compromising handle stability, while the friction ring can be independently optimized for friction characteristics.
Solution Approach 2:
The friction ring acts as an intermediary component between the valve stem and the handle mechanism. It provides the necessary friction force to prevent handle self-movement without requiring changes to the handle size or shape, thereby maintaining design flexibility while achieving stability.
2Reliability
If friction force is increased to prevent valve stem self-movement, then position control is improved, but the force required to actuate the handle increases
Solution Approach 1:
The friction ring applies friction force locally at the contact interface with the valve stem, providing position control only where needed. The handle design can optimize for ease of actuation in other areas, allowing position control without uniformly increasing actuation force across the entire mechanism.
Solution Approach 2:
The friction ring allows independent adjustment of friction parameters (such as contact pressure and contact area) to achieve the optimal balance between position control reliability and acceptable actuation force, without being constrained by handle geometry.
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, allowing for precise control of water flow and temperature without the need for continuous handle adjustments, thus enhancing the design flexibility of faucet handles.
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
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.