Threaded Adapter for Secure Spray Nozzle Retention
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Solution Overview
Problem
Current product containers with LDPE spray inserts face issues of accidental detachment due to manufacturing deviations and pressure exertion during product application, leading to safety risks and costly testing procedures to ensure secure hold.
Innovation Solution
A threaded adapter with an integrated spray nozzle and KiSi closure cap is designed to replace the LDPE insert, featuring fastening elements that snap into place on the product container's external thread, preventing unintentional detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tongue and groove connection is used to secure the LDPE injection insert in the bottle neck, then the insert can be firmly secured under normal conditions, but under pressure during product ejection the insert can be forced out due to manufacturing deviations or incorrect insertion
Solution Approach 1:
The patent introduces a threaded adapter as an intermediary component between the bottle neck and the spray nozzle assembly. This adapter features an external thread that screws onto the bottle neck and internal threading that receives the spray nozzle. The threaded connection acts as a mediator that distributes and stabilizes the connection forces, preventing the spray nozzle from detaching under pressure while maintaining secure holding.
Solution Approach 2:
The patent divides the closure system into separate functional components: the bottle neck, the threaded adapter, and the spray nozzle assembly. This segmentation allows each component to be optimized independently - the adapter handles the mechanical connection and pressure distribution, while the spray nozzle focuses on product delivery. The separation eliminates the need for a single complex tongue-and-groove connection that must simultaneously provide both secure mounting and pressure resistance.
2Reliability
If complex testing procedures are conducted to ensure the injection insert functions safely under load, then product safety can be guaranteed, but manufacturing costs and testing effort increase significantly
Solution Approach 1:
The threaded adapter serves as a disposable or replaceable component that absorbs potential failure modes. By using a simple threaded connection design with inherent mechanical advantage, the system achieves reliable performance without requiring complex testing procedures. The adapter can be easily replaced if needed, eliminating the need for expensive and time-consuming safety tests while maintaining product safety.
3Reliability
If a threaded adapter with spray nozzle integrated component is used to replace the PE insert, then the retention of the spray nozzle is significantly improved, but the overall height of the assembly increases
Solution Approach 1:
The patent implements a nested structure where the spray nozzle is integrated within or alongside the threaded adapter body. The spray nozzle assembly fits into the adapter's internal threading, and the overall design allows components to be nested within each other rather than stacked linearly. This nesting approach maintains secure retention through the threaded connection while minimizing the overall height of the assembly by utilizing radial rather than axial space.
Data Source
Figure 1~4
Figure 5
AI summary
The invention relates to a product receiving container (8) comprising a spray nozzle (2) arranged at a product dispensing opening (10) with an external thread (12) and a sealing cap (11) for this product dispensing opening. The spray nozzle (2) is integrated into a threaded adapter (6) which is screwed onto the product dispensing opening (10). The threaded adapter has an external thread (1) for the releasable attachment of the sealing cap (11) to close the spray nozzle and is arranged as a connecting piece between the product receiving container and the sealing cap. The threaded adapter is positively and permanently attached to the product receiving container.