Application Container Curved Inner Surface Design

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Solution Overview

Problem

Conventional application tools for medicinal solutions face difficulties in applying the solution to the center part of the back without causing a large impact force, leading to potential drops when shifting from an upward to a downward attitude.

Innovation Solution

The application container design features a body section with a base portion, reduced diameter portion, interposed portion, and back-side neck portion, where the inner surfaces of the belly-side boundaries are curved convexly outward and inward, respectively, to minimize ruffling and impact force, and includes finger receiving portions for stable handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the application tool is shifted to a downward attitude from an upward attitude, then the medicinal solution can be applied to the center part of the back, but a large impact force is generated causing the container to be dropped

Engineering Contradiction:

Improveapplicability to center part of backVSAvoidimpact force on container

Core Design Contradiction:

Ease of operationVSForce

Solution Approach 1:

The patent applies curvature to the inner surfaces of the reduced diameter portion and back-side neck portion. Specifically, the reduced diameter portion has an inner surface curved convexly toward the mouth section, and the back-side neck portion has an inner surface curved convexly toward the interposed portion. These curved surfaces guide the medicinal solution smoothly during attitude changes, preventing ruffling and reducing impact force on the container.

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Adaptability or versatility

If the medicinal solution flows freely during attitude change, then the application is flexible, but the solution ruffles and generates impact force

Engineering Contradiction:

Improveflexibility of applicationVSAvoidstability of medicinal solution

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The curved inner surfaces of the reduced diameter portion and back-side neck portion create a smooth flow path for the medicinal solution. This curvature design allows the solution to adapt to attitude changes while maintaining stability by preventing ruffling and excessive movement during the transition from upward to downward attitude.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The patent modifies the geometric parameters of the container body, specifically the curvature radius and shape of the reduced diameter portion and back-side neck portion. These parameter changes optimize the flow characteristics of the medicinal solution, allowing it to move smoothly during attitude changes without generating harmful impact forces.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11298516B2Application container and application tool

Publication Date: 2022.04.12 KOBAYASHI PHARMA CO LTD

AI summary

Provided is an application container including a bottom wall, a body section, and a mouth section. The body section includes a base portion, a reduced diameter portion, an interposed portion interposed between the reduced diameter portion and the mouth section, and a back-side neck portion interconnecting the interposed portion and the mouth section at a position opposite to the bottom wall across an axis of the mouth section in a direction orthogonal to the axis. An inner surface of the first belly-side boundary between the base portion and the reduced diameter portion has a shape curved convexly outward. An inner surface of the second belly-side boundary between the reduced diameter portion and the interposed portion has a shape curved convexly inward.