Threaded Fluid Dispenser Closure With Angular Indexing
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Solution Overview
Problem
Existing fluid dispensers with deformable skirts face difficulties in re-screwing due to deformation and require specific thread geometries, limiting their usability on materials like plastic and ensuring a secure seal.
Innovation Solution
A fluid dispenser with a fixing member featuring internal helical threads and angular indexing, allowing precise orientation and engagement without deformation, enabling secure mounting and re-screwing on various materials without specific thread geometries, using a combination of hinges and flexible webs for radial movement and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a deformable skirt is used to engage with the threaded neck, then the initial mounting is simplified, but the re-screwing operation becomes difficult and the seal is compromised
Solution Approach 1:
The skirt is divided into multiple segments that can independently deform during initial mounting to accommodate the threaded neck, then return to their original shape to provide reliable re-screwing capability and maintain seal integrity
Solution Approach 2:
The skirt transitions from a static rigid structure to a dynamic structure with controlled elasticity, allowing it to deform during initial engagement and then maintain its shape for subsequent operations, resolving the contradiction between ease of mounting and reliability
2Ease of manufacture
If a deformable skirt is used to ensure secure engagement, then the initial mounting is facilitated, but the thread geometry becomes specific and limited
Solution Approach 1:
The skirt's physical parameters (elasticity, deformation range) are optimized to accommodate standard thread geometries while maintaining compatibility across different materials, enabling both easy mounting and broad adaptability
3Reliability
If the skirt is made rigid to maintain thread integrity, then re-screwing is improved, but initial mounting without deformation becomes difficult
Solution Approach 1:
The skirt is designed with controlled elasticity that allows temporary deformation during initial mounting while maintaining sufficient rigidity for reliable thread engagement during re-screwing operations
Solution Approach 2:
The segmented structure allows localized deformation during initial engagement while the overall structure maintains integrity for subsequent reliable mounting operations
Data Source
Figure 1~2
Figure 3
Figure 4a~6
AI summary
Fluid product dispenser comprising: · - a reservoir (R) provided with a threaded neck (R1) forming at least one external helical thread (R2), · - a closure element comprising a threaded skirt (F1) forming at least one internal helical thread (F2), and a band (H) which engages with a clamping action around the threaded skirt (F1), the skirt (F1) comprising a plurality of tabs (F11) each forming a segment (F21) of the internal helical thread (F2), characterized in that: · - the fastening member (F) comprises angular indexing means for positioning it with respect to the external helical thread (R2) of the neck (R1) with a predetermined angular orientation, and · - the segments (F21) of the internal helical thread (F2) of the threaded skirt (F1) come into corresponding threaded engagement with the external helical thread (R2) of the neck (R1) in the final assembly position.