Hose Fitting Clamping Sleeve for Watertight Push-Fit Connection
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Solution Overview
Problem
Existing hose fitting technologies face challenges in achieving a quick, non-detachable, and cost-effective connection between hoses and cartridge housings or jet generators that can withstand water pressure, temperature differences, and corrosion, while avoiding metal contact for drinking water applications.
Innovation Solution
A device featuring a clamping sleeve with inwardly directed compression rings and a projection on the connecting piece that forms a non-detachable, non-metallic connection, ensuring secure attachment and watertightness, with the clamping sleeve designed to clamp the hose externally and surround the connecting piece, using a collar and projection for interlocking and preventing disassembly without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw connections are used to attach the hose to the cartridge housing or jet former, then the connection can be securely fastened, but the assembly becomes expensive and time-consuming
Solution Approach 1:
The invention extracts the threaded connection elements from the system and replaces them with a simple push-fit mechanism. The hose is inserted into a receiving area with a stop, eliminating the need for threading operations and significantly reducing assembly time while maintaining connection security through the clamping sleeve and stop structure.
Solution Approach 2:
The connection system is segmented into distinct functional elements: a receiving area with a stop for positioning, and a separate clamping sleeve for securing. This segmentation allows each element to perform its specific function efficiently, with the stop providing precise positioning and the clamping sleeve providing secure fastening without requiring threaded operations.
2Reliability
If threaded connections are used for hose attachment, then the connection can be securely fastened, but the manufacturing cost increases
Solution Approach 1:
The invention removes threaded connection elements from the design, replacing them with simple geometric features (receiving area with stop) and a clamping sleeve. This elimination of complex threading operations reduces manufacturing complexity and cost while maintaining secure connection through the alternative push-fit and clamp mechanism.
Solution Approach 2:
Instead of using external threading to create the connection, the invention inverts the approach by using an internal receiving area with a stop and an external clamping sleeve. This inversion simplifies the manufacturing process by eliminating the need to cut and form threads in either the hose or the cartridge housing/jet former.
3Reliability
If metal connection means are used in the hose fitting, then the connection can withstand water pressure and corrosion, but metal contact with drinking water occurs
Solution Approach 1:
The invention introduces an intermediary clamping sleeve that acts as a barrier between metal components and drinking water. The sleeve is positioned such that it prevents direct contact between metal connection elements and the water flow, while still allowing the metal components to provide the necessary structural strength and pressure resistance.
Solution Approach 2:
The invention extracts metal components from the water flow path, removing them from direct contact with drinking water. The metal connection elements are positioned outside the water flow area, and their connection function is maintained through the clamping sleeve mechanism without compromising pressure resistance.
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 provides a secure, easy-to-assemble, and cost-effective hose fitting that maintains watertightness and resistance to pressure and corrosion, eliminating the need for metal components in the water flow path and reducing assembly complexity.
Implementation Method 1
A clamping sleeve (8) is provided, which clamps an end area (9) of the hose (7) on the outside at least on the first connection piece (4) or the second connection piece (6)
Implementation Method 2
it is provided that the clamping sleeve forms a plurality of compression rings (13) on the inside, which press the hose against the first connection piece (4) or the second connection piece (6)
Implementation Method 3
The clamping sleeve also has an inwardly directed collar (10) which, in the assembled state, is to be arranged in particular adjacent to the hose (7). This inwardly directed collar (10), which may also be interrupted (in the circumferential direction), now encompasses a first/second projection (11) of the first/second connecting piece (4; 6)
Data Source
Figure 1
Figure 2
AI summary
The device (1) has a cartridge housing (3) with a first pipe union (4) or a spray plate (5) with a second pipe union (6) and a hose (7). The hose is more connectable with the first pipe union or the second pipe union. A far clamping sleeve (8) clamps an end region of the hose on outside of the first pipe union or the second pipe union. An inward directed collar embraces a projection of the first pipe union or the second pipe union. The sleeve forms a press ring, which presses the hose against the first or second pipe unions.