Drawer Rail Locking Element Design to Reduce Installation Space
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Solution Overview
Problem
Existing drawer pull-out guide systems require significant installation space due to protruding locking mechanisms, and they often have visible components that affect aesthetics and require additional actuating elements for each drawer.
Innovation Solution
A drawer rail system where the locking element is pivotally supported on the second rail, allowing it to yield downwardly and snap back to lock the drawer relative to the rail, eliminating the need for height engagement and providing a compact, aesthetically unobtrusive design by integrating the locking element within the rail's cross-sectional area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a downwardly protruding locking latch is used to lock the drawer to the guide rail, then the drawer can be securely locked during normal operation, but the installation space of the drawer pull-out guide must be dimensioned relatively large
Solution Approach 1:
The locking element is moved from a downward protruding configuration into the horizontal plane of the rail, changing the dimension in which the locking action occurs. The locking element now extends horizontally beyond the rail profile and engages with a corresponding recess in the drawer, eliminating the need for vertical installation space while maintaining locking reliability.
Solution Approach 2:
The locking element is integrated within the cross-sectional area of the rail profile when not in use, nesting the locking mechanism within the existing structure. When locking is required, the element extends horizontally from the rail to engage the drawer, providing a compact solution that does not increase the vertical installation space.
2Reliability
If a spring tongue is used to arrest the drawer relative to the drawer rail, then the drawer can be locked, but the spring tongue is visible when the drawer is in a mounted condition affecting aesthetics
Solution Approach 1:
The locking element is extracted from the visible front surface of the rail and repositioned to engage from the side or rear, removing the aesthetic defect while preserving the locking function. The locking action occurs out of sight, with only the necessary engagement features visible.
Solution Approach 2:
The locking element is nested within the rail's cross-sectional profile when not engaged, and only extends when needed for locking. This integration ensures that the locking mechanism does not protrude visibly from the front of the rail during normal operation, maintaining aesthetic appearance.
3Reliability
If an actuating element is pivotally supported on each drawer sidewall to lock to the drawer rail, then the drawer can be locked to the drawer pull-out guide, but each drawer must be equipped with its own actuating element increasing device complexity
Solution Approach 1:
The drawer rail is designed with a universal locking mechanism that can serve multiple drawers simultaneously. The rail includes engagement features that work with standard drawer configurations, eliminating the need for unique actuating elements on each drawer and reducing overall system complexity.
Solution Approach 2:
The locking function is merged into the drawer rail structure itself rather than being a separate component on each drawer. The rail incorporates the locking and actuating features in a unified design that works with all drawers in the unit, reducing the total number of parts and simplifying the overall system.
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 solution allows for a space-efficient and visually appealing drawer pull-out guide system that automatically locks the drawer without requiring additional height space, enhancing accessibility and reducing noise and friction during sliding operations.
Implementation Method 1
the locking element being pre-stressed by a force of a force storage member in a direction of a locking position
Implementation Method 2
the locking element is arranged on the second rail and is configured to be pivoted, upon sliding the first rail onto the second rail, about a horizontally extending axis in the mounted position
Data Source
AI summary
A drawer rail includes a first rail to be fixed to a drawer, and a second rail to be arranged on rail of a drawer pull-out guide. The first rail and the second rail are to be connected to one another by sliding onto each other. The first rail and the second rail are locked to one another by a locking element, with the locking element being pre-stressed by a force of a force storage member in a direction of a locking position. The locking element is arranged on the second rail and is configured to be pivoted, upon sliding the first rail onto the second rail, about a horizontally extending axis in the mounted position, starting from the locking position, against a force of the force storage member in a direction of the carcass rail or the central rail of the drawer pull-out guide into an unlocking position.