Sanitary Outlet Fitting with Annular Seal and Axial Stop
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Solution Overview
Problem
Existing sanitary outlet fittings face challenges in esthetic configuration, production complexity, and improper installation risks due to tight production tolerances and lack of axial stops, leading to unattractive gaps and potential damage during installation.
Innovation Solution
The use of an annular seal with a cap shape that secures the insertable cartridge and intermediate holder, providing both axial and radial sealing options, which simplifies production and prevents over-tightening by acting as an insertion stop and reducing the risk of improper installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw connection is used to attach the outlet mouthpiece to the fitting outlet, then the connection is secure and reliable, but the outer cross-section becomes round which limits aesthetic configuration opportunities
Solution Approach 1:
The invention extracts the sealing function from the outlet mouthpiece and relocates it to a dedicated sealing element (gland or seal ring) that is part of the insertable cartridge assembly. This allows the outlet mouthpiece to be simplified or eliminated, enabling non-round aesthetic configurations while maintaining secure connection through the sealing element's radial sealing action.
2Reliability
If tight production standards are maintained to achieve radial sealing between the intermediate holder and fitting outlet, then sealing reliability is improved, but production complexity increases significantly
Solution Approach 1:
The invention introduces a dedicated sealing element (gland or seal ring) as an intermediary component between the intermediate holder and fitting outlet. This sealing element concentrates the sealing function in a specific location with optimized geometry, allowing radial sealing to be achieved through the element's design rather than requiring tight tolerances across the entire intermediate holder interface, thereby reducing production complexity.
3Adaptability or versatility
If no axial stop is provided for the insertable cartridge, then installation flexibility is maintained, but the risk of over-tightening and subsequent damage increases
Solution Approach 1:
The invention incorporates an axial stop feature (such as a shoulder or限位 structure) on the insertable cartridge or intermediate holder that prevents over-insertion before the threading engagement can cause damage. This preliminary mechanical limitation ensures that the cartridge is inserted to the correct depth, preventing damage to the threading or sealing surfaces while maintaining ease of installation.
4Strength
If the insertable cartridge is screwed too deeply into the fitting outlet, then connection strength is increased, but water droplets overflow and create unattractive drip marks
Solution Approach 1:
The axial stop feature prevents the insertable cartridge from being screwed too deeply into the fitting outlet by providing a mechanical limitation during installation. This ensures that the cartridge is positioned at the correct depth where the sealing element effectively seals water flow, preventing overflow and drip marks while maintaining adequate connection strength through proper threading engagement.
Data Source
AI summary
A sanitary outlet fitting with a liquid guide which opens into an outlet fitting, in the region of which an insertable cartridge is provided. The liquid guide is matched in at least the mouth region of the outlet fitting to the insertable cartridge. The insertable cartridge is held in the outlet fitting by a sleeve-shaped intermediate holder, which is held in the outlet fitting in a radially sealed manner. A peripheral edge region on the admission side of the insertable cartridge is held in an axially sealed manner in the outlet fitting. The insertable cartridge is inserted with the aid of the intermediate holder supporting it into the outlet fitting to a depth such that the insertable cartridge is held securely. Accordingly, the insertable cartridge is scaled axially in its peripheral region on the admission side. The intermediate holder can also be held in a radially sealed manner in the outlet fitting to prevent undesired creepage.