Contact-less Water Fitting Holder with Automatic Electrical Interruption
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Solution Overview
Problem
Existing non-contact water fittings face challenges in ease of assembly, maintenance, and sealing, particularly due to the need for complex electrical connections and valve protection mechanisms that require cable interruption during revision.
Innovation Solution
The design features a holder with spring-elastic contacts that automatically interrupt the electrical connection when the housing is removed, allowing for easy reassembly without separate cable connections and simplifying sealing with a ring seal, while power can be supplied by a battery or the mains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the housing is removed from the base for revision, then maintenance access is improved, but cable connections must be interrupted and valve protection is required
Solution Approach 1:
The patent extracts the cable connection function from the permanent structure by making it detachable. The cable connections are designed to be automatically disconnected when the housing is removed from the base, allowing maintenance access without requiring manual cable disconnection. This resolves the contradiction by separating the cable connection system from the fixed installation structure.
Solution Approach 2:
The patent implements self-service through automatic valve closure upon housing removal. When the housing is detached from the base, the valve automatically closes without requiring manual intervention or external control systems. This eliminates the need for complex valve protection mechanisms while maintaining safety during maintenance operations.
2Reliability
If separate cable connections are used for the presence detector, then electrical connection reliability is improved, but assembly complexity and sealing costs increase
Solution Approach 1:
The patent merges the electrical connection function with the mechanical mounting structure. The contact pins are integrated into the holder that secures the presence detector, so that a single mounting operation simultaneously achieves both mechanical fixation and electrical connection. This eliminates separate cable connections while maintaining reliability through the integrated design.
Solution Approach 2:
The holder serves multiple functions: it mechanically secures the presence detector to the base, provides electrical contact through integrated pins, and enables automatic connection/disconnection during installation/maintenance. This multi-functionality eliminates the need for separate cable connections and reduces overall assembly complexity.
3Stability of the object's composition
If the housing is securely fastened to the base, then structural stability is improved, but removal for maintenance becomes difficult
Solution Approach 1:
The patent implements a dynamic fastening system where the housing can be easily inserted and removed from the base using a simple screw connection. The holder design allows the housing to be securely fixed during operation but enables straightforward removal when needed for maintenance, adapting the connection state based on operational requirements.
Data Source
Figure 1~2
Figure 3~5
Figure 6
AI summary
The water fitting has a fitting body comprising a base (2) that can be attached to a washbasin or a building wall and a housing (3) that can be detachably mounted on the base. The housing (3) has a spout (4) and a water outlet (5). An electrically operated valve (6) and a presence detector (7) are mounted on the base (2). The presence detector (7) is mounted on a holder (8) having electrical contacts (30, 31) in a receiving space (18) of the housing (3). The holder (8) is mechanically and electrically detachable from a contact carrier (58) that is attached to the base (2) and has electrical contacts (34, 35).