Van Drawer Unit with Segmented Snap-Fit Locking
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Solution Overview
Problem
Existing drawer units for vans are bulky, inflexible, and have noisy locking systems that restrict modular integration and secure operation, leading to vibrations during travel and simultaneous drawer opening when inclined.
Innovation Solution
A modular drawer unit with a support frame featuring interlocking teeth and a resilient snap-fit mechanism for secure attachment to the van's chassis, combined with a separate and quiet locking system for each drawer, allowing versatile mounting and easy integration with other van modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid metal rod locking system is used to secure multiple drawers, then the locking reliability is improved, but the device complexity increases and lateral attachment is prevented
Solution Approach 1:
The locking system is segmented into individual drawer units, with each drawer having its own independent locking mechanism rather than a single rod locking multiple drawers. This simplifies the overall system while maintaining reliability for each drawer independently.
Solution Approach 2:
The locking mechanism is extracted from the lateral attachment position and integrated into the drawer front structure. This removes the obstacle that prevented lateral attachment of other modules while preserving the locking function.
2Reliability
If a flush locking system with lateral rod attachment is used, then the locking function is achieved, but the adaptability for modular integration is reduced
Solution Approach 1:
The lateral rod attachment is completely removed and the locking function is repositioned to the drawer front. This extraction eliminates the conflict with modular integration while preserving the essential locking capability.
Solution Approach 2:
The drawer front structure is designed to serve multiple functions: it provides the locking mechanism, maintains structural integrity, and enables lateral attachment of other modules. This multi-functionality resolves the contradiction between locking reliability and modular adaptability.
3Strength
If the locking system uses a rigid metal rod structure, then the strength is improved, but the harmful vibrations during travel increase
Solution Approach 1:
The locking system incorporates elastomeric elements that provide flexibility and damping. These elastomeric components absorb vibrations during vehicle travel while maintaining the necessary locking strength, eliminating the harmful vibrations generated by rigid metal rod structures.
4Volume of moving object
If the drawer unit follows the internal shape of the van with varying depths, then the space utilization is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The drawer unit is divided into multiple independent drawers with varying depths, each capable of being manufactured using standard precision techniques. This segmentation allows complex overall shapes to be achieved through assembly of simpler, precisely manufacturable components.
Solution Approach 2:
The varying depths of drawers are achieved by organizing them in rows at different positions rather than creating a single complex continuous structure. This dimensional organization simplifies manufacturing while maximizing space utilization within the van's internal shape.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a compact, secure, and reliable drawer unit that can be easily integrated with various van modules, reducing noise and preventing simultaneous drawer opening, while maintaining operational efficiency and modularity.
Implementation Method 1
a resilient body 38 made of elastomeric material and having a shape corresponding to that of the toothed edge 10 with which it engages in a snap-fit fashion
Data Source
AI summary
Drawer unit for vans, comprising a plurality of drawers with a pivoting opening system, intended to receive products to be stored and transported, one or more containing bodies inside which the drawers can be rotatably engaged about an axis so as to assume an open position or a closed position, one or more support frames intended to be fixed inside the van and defining compartments inside which the containing bodies with the mounted drawers are retained via interlocking means. The latter consist of shaped teeth formed on the top wall and bottom wall of the containing body, which teeth engage, during assembly of the drawer unit, behind a projecting edge which defines the access to the compartment of the support frame.