Recessed Drawer Rear Wall Fitment for Compact Snap Assembly
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Solution Overview
Problem
Existing connecting fitments for drawer rear walls require significant structural space and multiple bending steps during manufacturing, making them inefficient in terms of space usage and assembly complexity.
Innovation Solution
A recess is created in the drawer side wall to house the fitment portion, allowing the drawer wall to project into the recess, thus hiding the fitment within the side wall thickness, and using snap-engagable latching elements for secure, tool-free fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional connecting fitment is used to fix the drawer rear wall to the drawer side wall, then the drawer components can be connected, but the fitment requires a relatively large amount of structural space and is visible from the interior of the drawer
Solution Approach 1:
The fitment portion is nested within the recess of the drawer side wall, with the drawer rear wall projecting into the recess. This nesting arrangement allows the fitment to be completely received within the recess, minimizing the space occupied by the fitment and making it invisible from the interior of the drawer, while still providing secure connection functionality.
Solution Approach 2:
Instead of having the fitment protrude outward to connect the drawer rear wall to the side wall, the solution inverts the arrangement by having the fitment recessed into the side wall. The drawer rear wall projects into the recess rather than the fitment projecting outward, fundamentally changing the spatial arrangement to reduce visible and occupied space.
2Reliability
If a conventional connecting fitment is used, then the drawer components can be connected, but the fitment has to be bent a number of times in manufacture
Solution Approach 1:
The connecting fitment is segmented into distinct functional portions: a fitment portion fixed to the drawer rear wall, and holding elements integrated into the drawer side wall. This segmentation allows each component to be manufactured separately with simpler processes, reducing the need for complex bending operations while maintaining reliable connection through the distributed holding elements.
Solution Approach 2:
The holding elements are designed to automatically engage with the fitment portion through snap-action or friction-based mechanisms, eliminating the need for complex manual assembly or multiple bending steps during manufacturing. The fitment portion and holding elements work together in a self-service manner to achieve secure connection.
3Shape
If the fitment portion is made compact and received within the recess, then the aesthetic appearance is improved and space is minimized, but the connection strength must be maintained
Solution Approach 1:
The drawer side wall features a locally differentiated structure with a recess that provides both aesthetic and functional benefits. The recess creates a clean, invisible appearance from the interior while maintaining adequate connection strength through strategically positioned holding elements that concentrate the connection forces at optimal locations within the recess volume.
Solution Approach 2:
The connection system employs composite construction with the fitment portion made from one material (suitable for being fixed to the drawer rear wall) and the holding elements made from another material (suitable for being integrated into the drawer side wall). This composite approach allows optimization of each component for its specific function while maintaining overall connection strength within the compact recessed configuration.
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
This configuration minimizes visible structural elements, reduces assembly complexity, and provides a compact, aesthetically pleasing connection that is both positively locking and force-locking, enhancing the drawer's structural integrity and ease of assembly.
Implementation Method 1
The latching elements which comprise plastic can be elastically deformable so that they can be latched with the openings in the fitment portion without the use of a tool.
Data Source
AI summary
A drawer includes having a drawer side wall, a drawer wall which is produced from a wood material, and having a fitting part (14) which is attached to one of the two end faces of the drawer wall and by which the drawer wall is connected to the drawer side wall. The drawer side wall has a recess for receiving the fitting part, and the drawer wall produced from the wood material, projects into the recess in the drawer side wall by way of that end face which is fitted with the fitting part.