Refillable Cosmetics Case Valve Structure for Leak-Free Dispensing
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Solution Overview
Problem
Conventional liquid cosmetics containers are prone to leakage and damage due to repeated pressing and releasing, which leads to inefficient discharge and storage of cosmetics liquids, and they are difficult to refill and dismantle.
Innovation Solution
A cosmetics case design featuring a conical elastic part and spring mechanism that opens and closes an inner hole using air pressure and elastic force, allowing for controlled discharge and prevention of leakage, with easy assembly and refilling capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple fixed brush structure is used in the cosmetics container, then the device complexity is reduced, but the reliability of preventing unnecessary leakage is worsened
Solution Approach 1:
The brush assembly is segmented into a removable brush head and a container body. The brush head can be detached and replaced, allowing the sealing components to remain with the container while the brush tip is replaceable. This segmentation maintains simple overall structure while enabling reliable sealing through dedicated sealing components at the interface.
Solution Approach 2:
A sealing ring or gasket is introduced as an intermediary component between the brush holder and the container opening. This intermediary element provides the necessary sealing function without complicating the overall structure, as it is a simple elastomeric component that can be easily integrated into the existing design.
2Reliability
If hard material container is used to prevent leakage, then the reliability of leakage prevention is improved, but the ease of operation for pressing and releasing is worsened
Solution Approach 1:
The container is segmented into a hard outer shell for structural integrity and leakage prevention, and a separate flexible pressing mechanism (such as a plunger or piston) that provides the necessary compliance for easy operation. The hard material ensures reliability while the separate flexible component maintains ease of operation.
Solution Approach 2:
A flexible membrane or thin-walled section is incorporated into the pressing interface of the hard container. This flexible element deforms under user pressure to allow easy operation, while the overall hard container structure maintains its leakage prevention capability. The flexible section acts as a compliant interface between the user and the rigid container.
3Productivity
If repeated pressing and releasing is performed to discharge cosmetics, then the productivity of cosmetics application is improved, but the reliability of preventing contamination and damage is worsened
Solution Approach 1:
The container incorporates a self-sealing mechanism that automatically closes the discharge opening when not in use. Each pressing action opens the valve for controlled discharge, and upon release, the valve automatically seals itself. This self-service sealing function allows repeated pressing operations for productivity while preventing contamination and damage during storage through automatic sealing.
Solution Approach 2:
The discharge mechanism incorporates a feedback-based valve control system where the pressing action triggers valve opening, and the release of pressure triggers automatic valve closure. This feedback mechanism ensures that the valve closes reliably after each discharge cycle, preventing contamination while allowing repeated efficient discharge operations.
4Ease of repair
If the inner moving body is made separable for refilling, then the ease of repair for refilling is improved, but the device complexity for assembly and disassembly is worsened
Solution Approach 1:
The container is divided into separable modules (container body, inner moving body, brush assembly) with simple mechanical interfaces. The refilling operation requires separating only the inner moving body from the container body, which are designed with simple snap-fit or threaded connections. This segmentation enables easy refilling while keeping the overall assembly structure relatively simple through standardized interfaces.
Solution Approach 2:
The inner moving body containing the cosmetics reservoir is designed as a removable cartridge that can be extracted from the container body for refilling or replacement. This extraction design simplifies the refilling process by isolating the refilling operation to a single removable component, while the overall device complexity remains manageable through the use of simple retention mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design ensures efficient and controlled discharge of cosmetics liquids, prevents leakage, and allows for easy refilling and maintenance by separating the inner moving body for assembly and refilling purposes.
Implementation Method 1
moving an opening valve due to the air pressure generated while the inner moving body ascends and descends
Implementation Method 2
the inner moving body descends due to the expansion force of a conical elastic part and the elastic force of a spring
Data Source
AI summary
This invention is related to a structure of cosmetics liquid discharge guider of the cosmetics case 1. The cosmetics case is object of during pressing a conical elastic part 33 composed of intermediate member 28 and moving an opening valve 29 due to the air pressure generated while the inner moving body 10 ascends and descends so that the inner hole 30 is opened and cosmetics liquid is discharged to the brush 56 by passing vertical and horizontal discharge guider 29a, 29b and liquid transporting passage 36 formed in upper and lower part of an opening valve 29 through a discharger 54, that the inner moving body 10 descends due to the expansion force of a conical elastic part 33 and the elastic force of a spring 34 and returns, and that the inner hole 30 is closed by an inclined plane 29c formed in a upper part of an opening valve 29 to prevent cosmetics liquid from being discharged. The conical elastic part 33 and a spring 34 is compressed formed in an intermediate member 28 by pressing and releasing the inner moving body 10 so that it is possible to freely discharge and to freely prevent the cosmetics liquid. The inner moving body 10 can be separated and opened due to easily assembling and dismantling of the inner moving body 10 and the connecting member 24 when the cosmetics liquid provided with the inner moving body 10 is exhausted so that the inner moving body 10 is refilled.