Sprinkler Head Adaptor With Brass Insert
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Solution Overview
Problem
Existing fire sprinkler systems face issues with plastic female threads cracking under brass male thread pressure, messy glue usage, and lengthy installation times due to glued connections between pipe extensions and sprinkler head adaptors.
Innovation Solution
A sprinkler head adaptor assembly with a brass female fitting integrally formed during the injection molding process, eliminating the need for glue and incorporating a brass ring at the lower end to prevent thread cracking, and featuring a wrench-engaging design for easier installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid glue is used to connect the pipe extension to the sprinkler head adaptor, then a leak-proof connection is formed, but the installation process becomes messy and time-consuming
Solution Approach 1:
The patent removes the glue application step entirely by using a threaded connection system. The pipe extension has external threads that screw into the female threads of the sprinkler head adaptor, eliminating the need for liquid glue and the associated mess and drying time.
Solution Approach 2:
The threaded interface acts as an intermediary mechanism between the pipe extension and sprinkler head adaptor. Instead of using glue as the connecting medium, the threads provide a mechanical interface that achieves both connection and sealing without messy adhesives.
2Stability of the object's composition
If liquid glue is used to connect components, then a permanent connection is achieved, but glue can ooze out and block water flow
Solution Approach 1:
The patent extracts the harmful element (glue) from the system entirely. By using a threaded mechanical connection, there is no glue to ooze out and block water flow, while still achieving a permanent, secure connection between components.
Solution Approach 2:
The patent replaces the permanent glue bond with a reusable threaded connection that can be assembled and disassembled as needed. This eliminates the risk of glue contamination while maintaining connection integrity.
3Ease of manufacture
If plastic female threads are used in the sprinkler head adaptor, then manufacturing cost is reduced, but the threads crack under brass male thread pressure
Solution Approach 1:
The patent uses a composite construction where the sprinkler head adaptor is made of plastic but incorporates a brass reinforcement ring or insert at the threaded portion. This combines the cost benefits of plastic with the strength of brass, preventing thread cracking under pressure.
Solution Approach 2:
The patent applies local reinforcement by placing a brass ring or insert only at the critical threaded portion of the plastic adaptor. This provides localized strength where the brass male threads engage, while the rest of the adaptor remains made of cost-effective plastic material.
Data Source
AI summary
The present invention is embodied in a sprinkler head adaptor assembly including a sprinkler head adaptor having a generally cylindrical shape and a female threaded interior wall in a central aperture for receiving a male threaded sprinkler head. The sprinkler head adaptor includes an exterior surface that includes an exposed portion. The assembly includes a pipe extension formed from an injection moldable material with a length suitable for spanning a distance from a pipe system to sprinkler location that is formed integrally with the sprinkler head adaptor, wherein the exposed portion of sprinkler head adaptor is sized and shaped for engagement with a wrench. A metal ring maybe formed in the central aperture.