Drawer Pullout Guide Rail Mounting with Pre-Tensioned Clamping Arm
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Solution Overview
Problem
Existing drawer systems with pullout guides face issues with secure and stable connections between the movable rail and the drawer, particularly in plastic components where material flow reduces retention forces over time.
Innovation Solution
A drawer system with a U-shaped holder and a bendable arm that supports the movable rail, featuring a slotted receptacle and a pre-tensioned support surface to enhance stiffness and dimensional stability, ensuring a secure and stable connection through a clamping mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bendable spring tongue is used to hold the rail in the locked position, then the rail can be securely held, but the retention forces are reduced over time due to plastic material flow
Solution Approach 1:
The patent changes the physical state of the plastic material by introducing a reinforcing rib that creates a bend line, transforming the material behavior from flow-prone to structurally stable while maintaining the bendable locking function
Solution Approach 2:
The patent creates a composite structure by integrating a reinforcing rib within the plastic latch part, combining the flexibility needed for locking with the structural integrity required to prevent material flow over time
2Strength
If the support surface directly contacts the front panel, then the holder stiffness is maximized, but the installation complexity increases
Solution Approach 1:
The patent introduces an indirect support path through the side panel and connecting elements, acting as intermediaries that transmit the support force from the front panel to the holder, maintaining stiffness while simplifying the overall structure and installation
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 stable and secure fixing of the movable rail for an extended period, maintaining retention forces and allowing for flexible installation positions, even in plastic components, by utilizing a pre-tensioned bendable arm and indirect support from the front panel.
Implementation Method 1
The bendable arm can be pre-tensioned by a force on the support surface toward the slotted receptacle. The bendable arm can thus be pre-tensioned by a force on the support surface toward the slotted receptacle. The bendable arm can press against the movable rail in a clamping manner in the installed position
Data Source
AI summary
A drawer has a device for securing a movable rail of a pullout guide on the drawer, and a support arranged on a side panel, on which a U-shaped holder is provided. The movable rail is insertable with a front end section into the U-shaped holder and the movable rail is lockable on the support and/or holder via at least one catch, which engages through at least one opening on the movable rail, wherein the drawer has a front panel. A method for installing a drawer on a movable rail of a pullout guide uses the device.