Hose Guide Box Prevents Twist and Jamming in Pull-Out Fittings
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Solution Overview
Problem
Sanitary pull-out hose fittings face issues with hose bend jamming, abrasion, and noise due to the lack of effective guidance, and existing solutions like retracting weights limit the hose's extension length and require significant assembly effort.
Innovation Solution
A hose guide device with a secure, open-top hose guide box that prevents rotation and features a height-adjustable coupling and optional guide weight roller or tension spring to facilitate smooth hose movement and extended length usage, while being compact and easy to assemble.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a retraction weight is mounted on the hose bend to assist return movement, then the hose can return to retracted position, but the maximum extension length is limited to slightly less than half the total length of the hose bend
Solution Approach 1:
The invention extracts the retraction weight from the hose bend itself and relocates it to a separate guide box structure. This separation allows the hose bend to extend fully without the weight limiting its range of motion, while the weight still performs its retraction function through the guide channel.
Solution Approach 2:
The guide box acts as an intermediary structure that houses both the retraction weight and provides guidance for the hose bend. This mediator enables the weight to influence hose movement without physically constraining the hose's extension length.
2Ease of manufacture
If the hose bend is left unsupported beneath the faucet, then assembly is simple, but the hose bend becomes jammed against components and suffers abrasion damage
Solution Approach 1:
The invention segments the hose support function from the faucet body by introducing a separate guide box structure. This modular approach provides dedicated protection for the hose bend while keeping the overall assembly relatively simple.
Solution Approach 2:
The guide box provides beforehand cushioning by creating a protective environment for the hose bend before any jamming or abrasion can occur. The guide channel pre-defines the movement path, preventing contact with harmful components.
3Reliability
If the hose bend is mounted in a closed-top guide box, then rotation and jamming are prevented, but assembly effort increases
Solution Approach 1:
The guide box is designed with dynamic characteristics that allow the hose bend to move freely within defined constraints. The open-top design with internal guidance elements provides rotation prevention while maintaining ease of assembly through simplified construction.
4Volume of stationary object
If the guide box is made compact, then space is saved, but the hose bend may twist or become twisted
Solution Approach 1:
The guide box employs local quality by providing rotation-proof guidance only where needed within the compact structure. The guide channel's specific geometry and dimensions are optimized to prevent twisting at critical locations while maintaining overall compactness.
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 effectively prevents hose bend jamming and abrasion, allows for full extension of the hose, reduces operating noise, and requires minimal assembly effort, enhancing the usability and durability of sanitary pull-out hose fittings.
Implementation Method 1
The guide weight roller can, by virtue of its weight, provide a restoring force to move the extended hose back to its unextended starting position
Implementation Method 2
a guide spring which can be coupled to the hose guide box on one side and to the hose bend on the other, such that it exerts a restoring spring force on the hose bend in the direction of a predetermined hose bend starting position
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a hose guide device for guiding a hose bend (2b) of variable length which hangs downward in a U shape and to a sanitary pull-out-hose fitting having such a hose guide device. A hose guide device according to the invention has a hose guide box (11) open at least at the top for the twist-proof accommodation of the hose bend (2b). The invention further relates to the use, e.g., for kitchen sink sprayers having a pull-out hose.