One-Piece Cosmetic Packaging With Hinged Snap Closure
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Solution Overview
Problem
Existing cosmetic product packaging devices require complex mould structures for demoulding and are not cost-effective or ergonomic.
Innovation Solution
A one-piece packaging device with a simplified structure featuring a hinged platform and snap-fastening elements, including vertical grooves and protuberances for secure closure and anti-translation stops, allowing easy manufacturing and enhanced user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a mobile transverse insert is used for demoulding the elongate opening, then the demoulding process can be completed, but the mould structure becomes complex
Solution Approach 1:
The patent removes the mobile transverse insert from the mould structure and instead forms the elongate opening directly in the stationary base. This extraction of the complex demoulding mechanism simplifies the overall mould structure while still achieving the goal of creating the opening in the base.
Solution Approach 2:
Instead of using a mobile insert to create the opening during demoulding, the invention inverts the approach by forming the opening directly in the base structure itself. The base is designed with the elongate opening as an integral feature, eliminating the need for separate demoulding mechanisms.
2Reliability
If vertical cutouts with snap-fastening grooves are used, then secure closure is achieved, but the structure requires precise manufacturing
Solution Approach 1:
The snap-fastening system uses asymmetric grooves and protrusions where the groove in the base and the corresponding protrusion in the lid are designed with complementary asymmetric shapes. This asymmetry ensures proper alignment and secure engagement while accommodating reasonable manufacturing tolerances.
Solution Approach 2:
The snap-fastening grooves are designed with sufficient depth and the protrusions with appropriate dimensions to provide a cushioning effect that absorbs manufacturing variations. The engagement geometry is designed to self-align and compensate for minor dimensional deviations.
Data Source
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AI summary
Moulded one-piece device (10) for packaging at least one product, in particular a cosmetic product, comprising a lid (20), a base (30) and a hinged platform (40) connecting said base (30) to said lid (20) in a pivoting manner, wherein the hinged platform (40) comprises : a first hinge (41) connected to a lower part of a rear wall (32) of the base (30) and configured to make the lid (20) pivot relative to the base (30) from an initial moulding position towards an open use position; and a second hinge (42) connected to an upper part of a rear wall (22) of the lid (20) in the initial moulding position and configured to pivot the lid (20) relative to the base (30) from the open use position towards a closed position, the base (30) and the hinged platform (40) being disposed in one and the same plane parallel to the plane of a lower surface (25) of the lid (20), which is opposite the upper part of the wall, in the initial moulding position. The base (30) comprises a rear wall (32) provided with a vertical cutout (32a) provided with two opposing vertical snap-fastening grooves (32b), each configured to cooperate with a vertical snap-fastening element (44) protruding vertically from the hinged platform (40) in the initial moulding position.