Lipstick Container With Replaceable Tube And Locking Mechanism

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Solution Overview

Problem

Conventional lipstick containers are not eco-friendly as they are discarded after the lipstick is consumed, leading to environmental pollution and waste.

Innovation Solution

A lipstick container design featuring a cap with inner cavities, a lipstick tube with a locking hole and recesses, a carriage with protrusions, and a seat with tabs and a bossed hole, allowing for the easy removal and replacement of the lipstick tube, enabling the container to be reused.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a conventional lipstick container is used, then the lipstick can be applied, but the entire container must be discarded after consumption, causing environmental pollution

Engineering Contradiction:

Improveenvironmental pollutionVSAvoidcontainer reusability

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The lipstick container is divided into separable components: a reusable container body and a replaceable lipstick tube. The container body includes a cap with cavities and a carriage structure, while the lipstick tube has a locking hole with recesses and a projection. This segmentation allows the container body to be reused while only the consumed lipstick tube is discarded, reducing environmental pollution.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The design enables recovery and reuse of the container body after the lipstick tube is consumed. The container body can be cleaned and prepared for a new lipstick tube, while the old tube is discarded. This recovers the valuable container components and reduces waste.

Inventive Principle:

Principle #34Discarding and recovering

2Object-affected harmful factors

If a reusable lipstick container is designed, then environmental waste is reduced, but the structural complexity increases

Engineering Contradiction:

Improveenvironmental wasteVSAvoidcontainer structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The container is segmented into modular components with standardized interfaces. The cap includes cavities that receive protrusions on the carriage, and the locking mechanism uses simple geometric features (recesses, projection, tabs). This modular segmentation reduces overall structural complexity while enabling reusability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The lipstick tube is nested within the carriage structure, which itself is nested within the container body. The carriage includes an axial channel that receives the lipstick tube, and the locking hole provides a nested locking interface. This nesting arrangement consolidates multiple functions into a compact structure.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Stability of the object's composition

If a locking mechanism is added to secure the lipstick tube, then stability is improved, but the ease of operation deteriorates

Engineering Contradiction:

Improvefastening stabilityVSAvoidtube replacement difficulty

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The locking mechanism uses asymmetric geometric features: the projection on the lipstick tube fits into specific recesses on the tabs, and the cavities on the cap align with protrusions on the carriage. This asymmetric design provides stable locking while allowing operation in only one direction (clockwise or counterclockwise), simplifying the user action.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The locking mechanism transitions from a static fixed connection to a dynamic reversible connection. The tabs can rotate to engage or disengage from the projection, and the carriage can be rotated relative to the cap. This dynamic design allows easy engagement and disengagement while maintaining stability during use.

Inventive Principle:

Principle #15Dynamics

4Object-affected harmful factors

If the lipstick tube is made replaceable, then eco-friendliness is improved, but the reliability of the connection deteriorates

Engineering Contradiction:

Improvewaste reductionVSAvoidconnection reliability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The locking features (projection, recesses, tabs) are pre-configured in specific positions and orientations. The cavities on the cap are pre-aligned to receive the protrusions on the carriage, and the locking hole is pre-positioned to engage the tabs. This preliminary configuration ensures reliable connection upon assembly without requiring additional adjustment or complex fastening steps.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11357308B1Lipstick container with replaceable lipstick tube

Publication Date: 2022.06.14 ZHUHAI DING RONG PLASTIC PROD CO LTD

AI summary

A lipstick container includes a cap including a plurality of cavities on an inner surface; a lipstick tube including a locking hole in a bottom, two opposite recesses on the locking hole, and a projection on an inner surface of the locking hole and distal the recesses; a carriage put on an outer surface of the lipstick tube adjacent to the locking hole and including a plurality of protrusions on an outer surface and complementarily disposed in the cavities respectively, an axial channel, and an annular protuberance on a surface of the axial channel, and a plurality of slits in the annular protuberance; and a seat including a bossed hole extending to dispose in both the axial channel and the locking hole, and two opposite tabs formed on an edge of the bossed hole and passing through the recesses respectively to urge against the projection.