Foldable Carton Triangular Flap Sidewall Height
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Solution Overview
Problem
Existing foldable cartons are limited in dimensional configuration due to inward folding of sidewalls, which restricts their use in elongated and narrow designs, and often have inadequate locking mechanisms to secure the cover portion to the base portion.
Innovation Solution
A foldable carton design featuring a unitary blank with foldable panels, including triangular fold flaps and a locking mechanism, allowing for flexible dimensional configurations and secure closure, enabling the carton to be formed with sidewall heights greater than half the depth of the bottom panel and maintaining rigidity in both folded and unfolded states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front and rear sidewalls are folded inward when the carton is formed, then the carton can be stored and shipped flat, but the sidewall height is limited to one-half the depth of the bottom panel
Solution Approach 1:
The end panels are divided into two separate sections: a first end panel that folds inward and a second end panel that extends outward. This segmentation allows the front panel to fold inward for compact storage while the rear panel extends outward to provide the necessary sidewall height, resolving the contradiction between foldability and sidewall height limitation.
2Adaptability or versatility
If the carton is designed with elongated and narrow dimensional configuration, then it is suitable for certain applications, but the front and rear panels obstruct and interfere with one another when folding inward
Solution Approach 1:
By dividing the end panels into two separate foldable sections, the invention enables elongated and narrow dimensional configurations without panel interference. The first end panel folds inward while the second end panel extends outward, allowing the carton to achieve compact folded dimensions while maintaining the desired elongated shape when erected.
Solution Approach 2:
Instead of folding both end panels inward as in conventional designs, the invention folds the first end panel inward while extending the second end panel outward. This inverted approach to end panel configuration eliminates the interference problem that occurs with narrow, elongated cartons while maintaining foldability.
3Reliability
If the locking mechanism is designed to secure the cover portion to the base portion, then the carton maintains structural integrity, but the engagement between connecting portions is difficult to achieve
Solution Approach 1:
The locking mechanism is designed to automatically engage and secure the cover portion to the base portion through the natural folding and erection of the carton panels. The interlocking features align and engage automatically during the folding process, eliminating the need for complex manual assembly or additional fastening operations, thus achieving reliable locking while maintaining ease of manufacture.
Data Source
AI summary
A foldable carton is provided. The carton includes a bottom panel, a front panel, a rear panel, end panels, each foldably connected to the edges of the bottom panel. The carton further includes front end flap panels connected to the lateral ends of the front panel and rear end flap panels connected to the lateral ends of the rear panel. Each front end flap panel includes a connecting end section and a triangular fold flap connected to the connected end section. The triangular fold flap is connected to a side edge of the adjacent end panel by a hinged fold line. The connecting end section is secured to the front panel in an overlying arrangement and the triangular fold flap is configured to about the hinged fold line to allow the front panel to freely move between a fully upright position and a partially upright position.