Cosmetic Pot Lid With Eccentric Slide Coupling
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Solution Overview
Problem
Conventional cosmetic pots face challenges with screw thread formations that restrict neck and lid dimensions, leading to difficulties in sealing and potential product degradation due to improper tightening or loosening, and bulky designs that are not adaptable to pots with larger neck diameters.
Innovation Solution
A cosmetic pot design featuring a base with an indentation and a lid equipped with a coupling member and an eccentric radial double-action slide, allowing for easy opening and closing with reduced torque and friction, enabling sealing for any angular position of the lid, and eliminating the need for a coupling return member or position return member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a screw thread formation is used on the neck, then the lid can be screwed onto the base, but the neck height and lid thickness must be increased to accommodate the thread formation
Solution Approach 1:
The patent extracts the screw thread formation from the neck and relocates it to a coupling member that is separate from the base. The coupling member with爪 (claw) engages with an indentation on the neck, eliminating the need for a tall neck to accommodate threads while maintaining secure attachment capability
Solution Approach 2:
The coupling member acts as an intermediary between the lid and the base. Instead of directly threading the lid onto the neck, the coupling member mediates the connection by engaging its爪 with the indentation on the neck, allowing the lid to be attached without requiring extensive neck height
2Reliability
If the lid is screwed onto the base with excessive tightening, then the seal may be crushed, but insufficient tightening allows air or volatile products to escape
Solution Approach 1:
The coupling member with its爪 and the indentation on the neck create a self-regulating mechanism. The爪 engages with the indentation to provide a natural stop point, allowing the user to close the lid without needing to judge the correct tightening force. The mechanism itself prevents both over-tightening and under-tightening by providing clear engagement and disengagement positions
Solution Approach 2:
The engagement of the爪 with the indentation provides tactile feedback to the user. When the爪 engages with the indentation, the user can feel the engagement, providing immediate feedback that the lid is properly closed. This eliminates the need to estimate tightening force and ensures consistent sealing
3Reliability
If a stop is added to limit angular travel of the lid, then over-screwing is prevented, but the device complexity increases
Solution Approach 1:
The patent merges the stop function into the coupling mechanism itself. The爪 of the coupling member and the indentation on the neck together provide both the attachment function and the angular travel limitation. The geometry of the爪 and indentation naturally limits the rotation to the correct closing position without requiring a separate stop component
Solution Approach 2:
The coupling member serves multiple functions: it provides the attachment mechanism (爪 engaging with indentation), it limits angular travel (by the geometry of engagement), and it eliminates the need for separate stop or return members. This multi-functionality reduces overall device complexity while maintaining sealing reliability
4Reliability
If a spring device is used to provide fluid-tight closing, then sealing is improved, but the lid height increases significantly
Solution Approach 1:
The patent extracts the spring device from the lid structure and replaces it with a mechanical engagement system. The爪 of the coupling member and the indentation on the neck provide the sealing mechanism without requiring internal space for springs, thereby maintaining a compact lid height
Solution Approach 2:
The patent replaces the elastic mechanical system (spring) with a geometric mechanical system (爪 and indentation engagement). The sealing is achieved through the precise geometric fit and engagement of these components rather than through elastic deformation of a spring, eliminating the need for additional height to accommodate spring mechanisms
Data Source
AI summary
The invention concerns a cosmetic pot comprising a base and a lid that is configured to assume a closed position and an open position, and that further comprises at least one coupling member configured to assume a first position when the lid is in the closed position and to assume a second position, spaced apart from the first position, when the lid is in the open position. The lid comprises, in particular, a slide, with radial and eccentric double action, and a control stud configured to slide in relation to the slide between a first position and a second position, the coupling member assuming the first position of same when the stud is in the first position in relation to the slide and assuming the second position of same when the stud is in the second position in relation to the slide.