Sleeve-and-Inner Box Structure for Drop Protection and Child Lock

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Solution Overview

Problem

Existing packaging boxes lack effective drop protection and child safety features, fail to fully showcase product appearance, and are environmentally unfriendly due to traditional materials.

Innovation Solution

A packaging box design comprising a sleeve box and an inner box with oblique partition boards and protrusions/mortises for drop protection and child lock functionality, using foldable cardboard sheets for environmental friendliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a traditional liner with hollow cavity wall is used, then the product is protected to some extent, but the product cannot be taken out after placement and the packaging grade is antiquated

Engineering Contradiction:
ImproveProduct accessibilityVSAvoidProduct protection
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The packaging box is divided into an outer packaging box and a detachable liner, allowing the liner to be easily removed for product access while maintaining protection during storage. The liner includes a bottom plate, side walls, and a detachable cover that can be separated from the outer box.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The liner is designed with dynamic characteristics through its detachable cover and flexible positioning within the outer packaging box. The liner can be inserted and removed easily, transforming from a static protective barrier to a dynamic component that facilitates product access when needed.

Inventive Principle:
Principle #15Dynamics

2Device complexity

If a simple closed packaging box is used, then the structure is simple, but children can easily open it by pulling out the liner or opening the outer box

Engineering Contradiction:
ImprovePackaging structureVSAvoidChild safety
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The packaging box is segmented into an outer packaging box and an inner liner with separate closure mechanisms. The liner has its own cover that must be opened independently from the outer box, creating an additional safety barrier that prevents children from accessing contents even if they can open the outer packaging.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The liner is nested within the outer packaging box, with the liner's cover providing an additional layer of protection. This nested structure means that to access the product, a child would need to successfully open both the outer box and the inner liner cover, significantly reducing the risk of accidental access.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Device complexity

If a packaging box with hollow cavity wall is used, then the structure is simple, but the exhibition effect is poor as only one side surface of the product can be exhibited

Engineering Contradiction:
ImprovePackaging structureVSAvoidProduct exhibition
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The packaging is segmented into an outer packaging box and a separate liner, allowing the liner to be removed and positioned to showcase different aspects of the product. This segmentation enables the product to be displayed from multiple angles and perspectives, improving exhibition effectiveness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The detachable liner can be repositioned and arranged in different configurations within the outer packaging box, enabling the product to be exhibited from multiple dimensions and angles. This flexibility allows for enhanced product display beyond the limitations of a fixed single-side structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260048911A1Packaging box with drop protection and child lock
Publication Date: 2026.02.19 WANG SHUANGLANG
  • US20260048911A1 patent drawing
  • US20260048911A1 patent drawing
  • US20260048911A1 patent drawing

AI summary

A packaging box with drop protection and a child lock includes a sleeve box and an inner box. A receiving cavity for receiving the inner box is formed in the sleeve box. A cavity is formed in the inner box. The inner box is provided with a storage cavity. Partition boards are arranged on side surfaces of the storage cavity, end surfaces of the partition boards are uneven surfaces, and the partition boards are oblique. Protrusions are arranged on side plates, and mortises are formed in positions, corresponding to the protrusions, of the sleeve box. The packaging box may gradually adapt to the size of a product to ensure that the product is placed more tightly, guarantees an effective clamping force, provides drop and buffer protection, and exhibits more appearance features of the product, thereby providing a new product packaging experience.