Spray Head Retraction Assembly With Constant-Force Hose Control
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Solution Overview
Problem
Conventional faucet spray head retraction mechanisms either provide a constant force that does not prevent hose disturbance or increase in resistance as the hose is withdrawn, failing to maintain a desirable constant retraction force and avoid hose tangling or snagging with objects beneath the sink.
Innovation Solution
A faucet mounting assembly incorporating a conical nut and receiving clip with radially flexible tabs, and a hose retraction assembly featuring a rotary damper and biasing member, which allows for a controlled and constant force retraction of the hose while preventing snagging with objects beneath the sink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a counterweight is used to provide constant retraction force, then the spray head can be retracted toward the spout, but the hose may disturb items stored beneath the sink
Solution Approach 1:
The patent introduces a guide rail as an intermediary component between the hose and the sink environment. The guide rail channels and constrains the hose movement, preventing the hose from disturbing items beneath the sink while maintaining the constant retraction force provided by the counterweight. This mediator resolves the conflict between force application and operational stability.
2Force
If springs are used as biasing mechanisms, then the hose can be retracted, but the resistance increases as the hose is withdrawn
Solution Approach 1:
The patent replaces the spring mechanism with a counterweight system that replicates the desired retraction function but with constant force characteristics. The counterweight copies the biasing function of the spring while eliminating the progressive resistance increase, providing a more desirable constant retraction force throughout the hose withdrawal process.
3Ease of operation
If the hose is allowed to move freely during retraction, then the spray head can retract smoothly, but the hose may tangle or snag with objects beneath the sink
Solution Approach 1:
The patent segments the hose movement into controlled portions by introducing a guide rail system. The guide rail divides the retraction path into defined segments with specific movement characteristics, allowing smooth retraction while preventing random hose movement that could cause tangling or snagging. This segmentation maintains both operational smoothness and positioning reliability.
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 solution ensures a smooth and controlled retraction of the spray head into the spout, maintaining a constant force and preventing hose tangling or snagging, enhancing user experience and reducing wear on the hose.
Implementation Method 1
The rotary damper is configured to impose a unidirectional resistance onto the bracket
Implementation Method 2
The biasing member is coupled to the bracket and is configured to provide a biasing force onto the bracket into the first position
Data Source
AI summary
A faucet mounting assembly for a faucet includes a conical nut and a receiving clip. The conical nut is coupled to a nozzle. The receiving clip is coupled to an inner surface of the faucet and is configured to receive the conical nut within. The receiving clip includes a substantially annular base, one or more tabs and a slot. The one or more tabs including fixed ends fixed to the substantially annular base and free ends opposite the fixed ends and bounded by the slot. The one or more tabs are configured to flex radially between a non-flexed position and a flexed position. The one or more tabs flex into the flexed position when the conical nut is repositioned in and out of engagement with the receiving clip and return to the non-flexed position when the conical nut is seated within the receiving clip.