Sealing Nozzle Design for Cosmetics Pump Air Interception
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Solution Overview
Problem
Existing discharge pumps for gel-like contents allow air and foreign substances to enter the nozzle, causing the liquid contents to oxidize and harden, leading to skin troubles and reduced product reliability due to continuous nozzle inlet opening.
Innovation Solution
An outlet pump vessel design that includes a sealing nozzle with a push button operation to open and close the inlet, using a cylindrical push member to control the slit in the nozzle, preventing air contact and solidification during operation and non-operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the discharge nozzle inlet is continuously opened to allow liquid content discharge, then the ease of operation is improved, but air and foreign substances enter the nozzle causing oxidation and hardening of liquid contents
Solution Approach 1:
The discharge nozzle inlet is designed to dynamically change its state between open and closed positions. During operation, the inlet opens to allow liquid content discharge, and during non-operation, it closes to prevent air and foreign substances from entering. This dynamic state change resolves the contradiction by allowing easy operation when needed while maintaining reliability when not in use.
2Reliability
If an opening/closing rod is added to close the discharge nozzle inlet, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The opening/closing rod function is merged with the existing pump structure. The rod is integrated into the pump body and operates in coordination with the pump's existing mechanical components, eliminating the need for separate actuating mechanisms and reducing overall device complexity while maintaining the reliability benefit of inlet closure.
Solution Approach 2:
The opening/closing rod serves multiple functions: it closes the discharge nozzle inlet to prevent contamination, and it is actuated by the existing pump mechanism during normal operation. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity.
3Reliability
If the discharge nozzle structure is modified to enable closing, then the reliability is improved, but the manufacturing time and production cost increase
Solution Approach 1:
The discharge nozzle is segmented into multiple components: the nozzle body, the opening/closing rod, and the seal element. This segmentation allows each component to be manufactured independently using standard processes, and then assembled together. The modular design reduces manufacturing complexity and cost compared to creating a fully integrated closed nozzle structure.
Data Source
AI summary
Disclosed is an outlet pump vessel of a liquid content which is able to intercept the air, including a sealing nozzle having an inlet through which the liquid content is discharged during operation of the push button and the inlet of the sealed nozzle is closed during non-operation of the push button by inserting the sealed nozzle into an outlet of the liquid content of the push button to prevent the liquid content of cosmetics remaining on a transfer passage from being oxidized or deteriorated due to contact with the air and the liquid content on a discharge port side from being solidified and hardened.