Non-roll stick container with nested cap and living hinge

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Solution Overview

Problem

Stick product containers face difficulties in cap removal and cap loss, leading to the container rolling away and the product inside drying out, rendering it useless.

Innovation Solution

The design incorporates a removable top cap with a thumb lever push ring to prevent rolling and a living hinge mechanism that allows the cap to be flipped back and inserted into a base plug hole, ensuring the container remains stable and the cap is securely attached.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the cap is made removable for easy access to the stick product, then the ease of operation is improved, but the cap is easily lost or misplaced

Engineering Contradiction:

Improvecap removalVSAvoidcap retention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The cap is designed to nest within the hollow base of the container when removed, creating a nested structure where the cap fits inside the base cavity. This prevents the cap from being lost or misplaced while maintaining easy removability for product access.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of manufacture

If the container has a simple cylindrical shape, then the ease of manufacture is improved, but the container rolls away when laid horizontal

Engineering Contradiction:

Improvecontainer shapeVSAvoidcontainer stability

Core Design Contradiction:

Ease of manufactureVSStability of the object's composition

Solution Approach 1:

The container base is designed with an asymmetric geometry featuring a hollow cavity that receives the cap. This asymmetric hollow base structure prevents the container from rolling away when laid horizontal, while maintaining manufacturing simplicity through the basic cylindrical form with added hollow cavity.

Inventive Principle:

Principle #4Asymmetry

3Productivity

If the cap is easily removed for product access, then the productivity is improved, but the product dries out when the cap is left off

Engineering Contradiction:

Improveproduct access speedVSAvoidproduct preservation

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The hollow base is pre-designed with a cavity and positioning features that automatically receive and secure the cap when removed. This preliminary preparation of the base structure enables quick cap replacement and immediate product protection, preventing the product from drying out while maintaining fast access.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10231529B2Non-roll stick product containers

Publication Date: 2019.03.19 ANDERSON DORIS EILEEN

AI summary

Three stick product containers. One has a removable top cap with a crown and a hollow base, such that the top cap can be removed and inserted into the hollow base. The top cap has associated with it a thumb lever push ring to prevent the stick from rolling when laid horizontal. The other container is more suitable, for example, for a lip balm that has a top cap with a living hinge that can be flipped all the way back, inserted into a plug insert hole in the base of the cap, and then the cap is used to support the container in an at rest position to prevent it from rolling.