Auto-Retracting Faucet Spray Head Docking Mechanism
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Solution Overview
Problem
Existing faucet spray head mechanisms often fail to fully retract due to hose friction and alignment issues, with detents or magnets providing suboptimal solutions.
Innovation Solution
An auto-retracting mechanism featuring a docking assembly with a captive spring and latching jaws that securely engage the adapter, allowing for easy installation without additional machining, and a radially closing gripping mechanism to assist in the retraction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If counterweights are used to assist in hose retraction, then the retraction force is improved, but the spray head may not fully retract to docking position due to hose friction and alignment issues
Solution Approach 1:
The patent replaces the traditional counterweight mechanical system with a spring-loaded gripping mechanism. The spring (element 140) provides the retraction force, while the gripping mechanism (elements 120, 122, 124) actively engages with the spray head adapter (element 106) to ensure complete retraction. This substitution eliminates the reliance on gravity-based counterweights that fail to overcome hose friction and alignment issues.
Solution Approach 2:
The gripping mechanism automatically engages with the spray head adapter during retraction without requiring manual intervention. The spring-loaded design causes the gripping elements to naturally close and secure the adapter as the mechanism retracts, creating a self-service system that ensures complete docking reliability.
2Ease of operation
If detents or magnets are employed to assist in docking the spray head to the faucet body, then the docking assistance is improved, but the mechanism is not optimal for reliable full retraction
Solution Approach 1:
The patent employs a radially closing gripping mechanism where the gripping elements (122, 124) move in a radial direction toward the center axis of the docking assembly. This radial closure provides uniform engagement force around the spray head adapter, ensuring reliable docking that overcomes the limitations of linear detent systems or magnetic attraction.
Solution Approach 2:
The spring (140) is pre-loaded in the gripping mechanism to store mechanical energy before retraction begins. This preliminary energy storage ensures that when retraction is initiated, sufficient force is immediately available to overcome hose friction and complete the docking action reliably, rather than relying on gradual magnetic attraction or detent engagement.
3Reliability
If a radially closing gripping mechanism is used to grab the adapter during retraction, then the retraction reliability is improved, but the device complexity increases
Solution Approach 1:
The gripping mechanism is divided into separate functional elements: the spring (140) provides force, the gripping elements (122, 124) provide engagement, and the housing (102) provides structure. This segmentation allows each component to be optimized independently and simplifies manufacturing and assembly, reducing overall complexity while maintaining reliability.
Solution Approach 2:
The patent combines the spring-loaded retraction mechanism with the docking assembly housing into an integrated unit. The gripping elements are incorporated directly into the housing structure, eliminating the need for separate external mechanisms and reducing the overall complexity of the system while achieving reliable retraction.
4Manufacturing precision
If the docking assembly requires additional machining of the faucet spout tube, then the installation precision is improved, but the ease of manufacture decreases
Solution Approach 1:
The docking assembly is designed as a universal component that can be installed in standard faucet spout tubes without requiring custom machining. The housing (102) and gripping mechanism are configured to fit within existing faucet geometries, making the system adaptable to multiple faucet types and simplifying installation while maintaining adequate precision through the spring-loaded gripping action.
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
Ensures reliable and efficient automatic docking of the spray head, reducing hose friction and alignment problems, and allowing for easy extension and retraction without manual effort.
Implementation Method 1
a captive spring arranged between the gripper ring and a second end of the turret. The captive spring can provide a motive force to slide the gripping member from an extended position to a docked position.
Implementation Method 2
a compression ring may be retained within bores formed in the adapter engagement members to provide a radially outward directed force upon the adapter engagement members, which can serve to retain the docking assembly in the extended position
Implementation Method 3
The turret can include a first end having a chamfered interior wall for interacting with a docking assembly engagement member of a spray head adapter.
Data Source
AI summary
An auto-retracting faucet spray head has an auto-retract mechanism, which includes a docking assembly provided at the end of the faucet body to facilitate automatic retraction and docking of the spray head. The docking assembly includes a spring-loaded mechanism that automatically docks the spray head to the faucet body when an adapter coupled to the spray head engages the docking assembly.