Drawer Wall Fastening Latch for Narrow Rear-Wall Assembly
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Solution Overview
Problem
Existing fastening devices for connecting furniture parts, such as a rear wall to a side wall of a drawer, are limited by the width of the wall part, restricting the length of the resilient latch and making it difficult to connect narrow wall parts effectively.
Innovation Solution
The resilient latch's notional spring axis is oriented transversely, preferably at a right angle to the wall part, allowing the latching receiving means to move in a single direction for easy assembly, and a second resilient latch can be added for increased stability, with a limb between them for enhanced stability, and the device is made from plastic for simplified production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the resilient latch is disposed perpendicularly to the wall of the wall part, then the latch can be compact within the wall width, but the maximum length of the latch is limited by the wall width, making it impossible to connect narrow wall parts effectively
Solution Approach 1:
The resilient latch is reoriented from a perpendicular disposition to the wall (limited by wall width in one dimension) to a parallel disposition (extending in a different dimension along the wall surface). This dimensional reorientation allows the latch length to be independent of wall width, enabling effective connection of narrow wall parts while maintaining compact dimensions through the transverse spring axis orientation.
2Adaptability or versatility
If the resilient latch extends parallel to the wall, then narrow wall parts can be connected, but the latch length is no longer constrained by wall width
Solution Approach 1:
The latch is reoriented from perpendicular to parallel relative to the wall surface, changing the dimensional constraint from wall width to wall length. This allows adaptation to narrow wall parts while the transverse spring axis maintains structural compactness.
Solution Approach 2:
The orientation parameter of the resilient latch is changed from perpendicular to parallel relative to the wall, fundamentally altering how the latch dimensions relate to wall dimensions. This parameter change enables universal application across different wall widths while maintaining design simplicity.
3Stability of the object's composition
If multiple resilient latches are added for stability, then the fastening device becomes more stable, but the number of components increases
Solution Approach 1:
Multiple resilient latches are merged into a single integrated fastening device structure, where the latches are connected and disposed in parallel relation. This merging approach increases stability through multiple latching points while avoiding the complexity of separate components, as the latches function as an integrated unit with shared mounting and coordination.
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 enables the connection of very narrow wall parts with a compact and stable fastening device, allowing for easy assembly and disassembly without tools, reducing production and fitment times, and providing a cost-effective solution.
Implementation Method 1
a resilient latch (3) which is resilient about a notional spring axis (A)
Data Source
AI summary
A fastening device connects two wall parts of a furniture part, in particular a rear wall to a side wall of a drawer. The fastening device has at least one locking projection resilient about an imaginary spring axis on one wall part, which locking projection can be locked—preferably detachably—into a locking receptacle fastened to or formed on the other wall part. The imaginary spring axis of the locking projection is at an angle—preferably substantially at a right angle—from a wall of the wallpart. The locking receptacle is formed on the other wall part as an opening, and an imaginary normal on the opening is substantially parallel to the imaginary spring axis of the resilient locking projection.