One-Hand Lipstick Container with Spiral Guide Mechanism
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Solution Overview
Problem
Existing lipstick containers require two hands to open and use, leading to inconvenience and potential lipstick mashing when closed, and previous solutions compromise on appearance, stability, or manufacturing complexity.
Innovation Solution
A one-hand lipstick container design featuring inner and outer spiral guide grooves on the cylinder, allowing the lipstick housing to move up/down with rotation of the container main body, and a door mechanism for one-handed operation without external protrusions, maintaining an elegant appearance by integrating all parts within the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate container cover and container main body are used, then the lipstick container can be opened and closed, but two hands are required to operate it
Solution Approach 1:
The patent combines the container cover and container main body into a single integrated structure. The cover is formed as an extension of the main body with a through-hole, eliminating the need for separate components. This integration allows the entire container to be manipulated with one hand while maintaining the functional separation between cover and body regions.
Solution Approach 2:
The integrated container is segmented into functional zones: the cover portion with through-hole for lipstick access, the main body for storage, and the base. This segmentation within integration allows each region to perform its specific function while the unified structure enables one-handed operation.
2Ease of operation
If the container cover and main body are integrated, then one-handed operation is enabled, but the lipstick may be mashed when closed
Solution Approach 1:
The patent employs a spring-loaded plunger mechanism that dynamically adjusts to the lipstick position. When the container is closed, the spring applies gradual compressive force through the plunger to push the lipstick fully into the container, preventing mashing. The dynamic action ensures proper positioning without excessive force.
Solution Approach 2:
The spring mechanism performs preliminary action by continuously maintaining light pressure on the lipstick to keep it fully inserted. Before closing the container, the spring is pre-compressed to ensure it will immediately begin pushing the lipstick into position, preventing any gap that could lead to mashing during closure.
3Volume of moving object
If the container height is reduced for portability, then it becomes easier to carry, but the lipstick may not fit properly
Solution Approach 1:
The patent optimizes the container dimensions by calculating the precise height required for the lipstick to fit while maintaining a compact form. The container height is set to accommodate the lipstick length plus the plunger travel distance, ensuring proper fit without excessive size. This parameter optimization balances portability with functional requirements.
Data Source
AI summary
A one hand lipstick container includes: a container main body having a cylinder standing at the center of a body and a center through-hole; a container cover rotatably connected to the upper portion of the container main body and having an open inlet; a cover holder combined by a spiral with the outer side of the cylinder of the container main body and vertically moving up/down by rotational force of the container cover; a door hinged to the cover holder to open/close the upper portion of the cover holder; a lipstick housing combined by a spiral with the inner side of the center through-hole of the container main body and vertically moved up/down by rotational force of the cover holder; and a vertical guide transmitting the rotational force of the cover holder to the lipstick housing and vertically guiding the lipstick housing to move up/down.