Retractable Hose Management System Using Pulley Assembly
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Solution Overview
Problem
Conventional faucets with pull-out sprayheads are complex to assemble, costly, and require extra space due to separate components and hoses, which can tangle with other items under the sink, necessitating a more compact and user-friendly extendable and retractable solution.
Innovation Solution
A retractable sprayhead hose management system utilizing a pully assembly with first and second pulleys, where the hose wraps around the pulleys to extend the sprayhead and retract it automatically when released, using a constant-force spring for smooth operation and minimizing interference with other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pull-out sprayhead is added to a conventional faucet, then the versatility and flexibility of water delivery is improved, but the device complexity and assembly difficulty increases
Solution Approach 1:
The patent integrates the sprayhead, hose, pulley assembly, and retraction mechanism into a single unified pull-out faucet assembly. The hose is routed through the faucet body and connected to the valve assembly, merging multiple previously separate components into one integrated unit that reduces assembly steps and complexity.
Solution Approach 2:
The faucet assembly is designed to perform multiple functions: it can deliver water through the spout, extend the sprayhead for flexible spraying, and automatically retract the sprayhead when not in use. The single assembly handles water delivery, hose management, and retraction without requiring separate mechanisms.
2Adaptability or versatility
If a separate stand-alone hand-held sprayer is used, then the flexibility of spraying direction is improved, but the space requirement on countertop increases
Solution Approach 1:
The hand-held sprayer is merged with the faucet assembly by integrating the hose connection and mounting mechanism into the faucet body. This eliminates the need for separate countertop mounting holes and allows the sprayer to be stored within the faucet assembly when not in use, reducing countertop space requirements.
3Adaptability or versatility
If the spray hose runs through the faucet body near the valve assembly, then the pull-out functionality is achieved, but the manufacturing cost and production complexity increases
Solution Approach 1:
The hose routing path is integrated into the faucet body design, with the hose passing through pre-formed channels and connecting to the valve assembly. This merging of the hose path with the existing faucet structure eliminates the need for separate hose channels and reduces manufacturing steps.
4Volume of moving object
If the sprayhead is made retractable with automatic retraction mechanism, then the space efficiency under the sink is improved, but the device complexity increases
Solution Approach 1:
The patent uses a weight-activated pulley system where a counterweight is attached to the hose. When the sprayhead is released, the counterweight descends, pulling the hose and sprayhead back into the faucet assembly through the pulley mechanism. This simple gravitational counterweight system provides automatic retraction without complex motors or springs.
Solution Approach 2:
The pulley assembly acts as an intermediary mechanism between the counterweight and the sprayhead. The pulley converts the downward motion of the counterweight into the retraction of the hose and sprayhead, providing a simple mechanical linkage that achieves automatic retraction without direct connection between the counterweight and sprayhead.
5Ease of operation
If the hose and movable parts are designed to extend and retract smoothly, then the ease of operation is improved, but the risk of tangling and interference with other components increases
Solution Approach 1:
The pulley assembly serves as an intermediary that guides and controls the hose movement during extension and retraction. The pulley keeps the hose aligned and prevents it from tangling with other components under the sink by directing it through a controlled path.
Solution Approach 2:
The hose is routed and positioned to maintain an equipotential arrangement where it clears other hoses, waterlines, and components throughout its range of motion. The hose path is designed to stay at a consistent distance from potential obstacles, preventing interference during extension and retraction.
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 system provides a compact, user-friendly, and efficient mechanism for extending and retracting the sprayhead, reducing assembly complexity and space requirements while maintaining hose tautness, thus enhancing usability and reducing production and storage costs.
Implementation Method 1
a constant-force spring provides an amount of tension on the tension pully to retract the sprayhead from the extended position to the retracted position
Implementation Method 2
a pully assembly including a plurality of first pullies, and a second pully operably coupled to the first pullies
Data Source
AI summary
A sprayhead hose retraction system including one or more pully assemblies having one or more pullies. Each of the one or more pullies have defined grooves configured to receive a hose, at least in part, wherein a first end of the hose is connected to a sprayhead of a faucet and wherein the hose wraps around the one or more pullies such that extension of the sprayhead moves or rotates the one or more pullies as the sprayhead extends from the faucet. When the sprayhead is released by a user, the one or more pullies provide a force onto the hose which automatically causes retraction of the sprayhead into the faucet.