Front-Opening Trolley Case With Modular Cover for Lower Mold Costs
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Solution Overview
Problem
Existing trolley cases with fixed assembly and difficult replacement of covers fail to meet consumer demands for diverse styles and increase production costs.
Innovation Solution
A front-opening trolley case with an easy-to-assemble front cover, featuring a detachable middle plate and outer frame connected via a zipper, allowing for easy replacement and simplifying production by using existing molds for the main body and new molds only for the middle plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fixed assembly structure is used for the front cover, then the structural stability is improved, but the adaptability and ease of replacement deteriorate
Solution Approach 1:
The front cover structure is divided into separable components (front cover body and middle plate) that can be detached and reattached. This segmentation allows the cover to maintain structural integrity during use while enabling easy replacement to change product appearance, thus resolving the contradiction between stability and adaptability.
2Adaptability or versatility
If new molds are made for each product style, then the adaptability and product variety are improved, but the manufacturing cost increases
Solution Approach 1:
The front cover is segmented into a common outer frame and interchangeable inner plates. Only the inner plates need to be manufactured in different styles, while the expensive outer frame mold can be reused. This significantly reduces molding costs while maintaining product variety.
Solution Approach 2:
The outer frame is designed as a universal component that can accommodate multiple different middle plate designs. This multi-functional design allows a single mold to produce the base structure for various product styles, reducing the need for multiple specialized molds and lowering overall manufacturing costs.
3Adaptability or versatility
If a detachable structure is used for the front cover, then the adaptability and ease of replacement are improved, but the device complexity increases
Solution Approach 1:
The detachable front cover is divided into simple, well-defined components connected by straightforward fastening mechanisms. This controlled segmentation achieves ease of replacement without introducing excessive complexity, as each component maintains a simple structure suitable for mass production.
Data Source
AI summary
The utility model relates to the technical field of bags, in particular to a front-opening trolley case with an easy-to-assemble front cover. An existing trolley case is assembled fixedly and cannot be replaced easily. The front-opening trolley case with an easy-to-assemble front cover comprises a main body, one side of the main body is provided with a front cover structure, the front cover structure comprises a middle plate and an outer frame, and the middle plate is detachably connected with the outer frame. The manufacturing of new products only needs to re-design and make a mold for the middle plate which is then assembled with the outer frame, which controls the cost to a certain extent, simplifies production and assembly technologies and provides a more beautiful appearance, thus having a good development prospect.