Drawer Rail Coupling Element for Multi-Unit Tool-Free Fixing
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Solution Overview
Problem
Existing drawer extension guides require multiple devices for fixing different functional units, leading to increased manufacturing costs and complexity, as well as the need for device replacement when functional units are updated.
Innovation Solution
A coupling element that allows for the selective fixing of multiple functional units to a single drawer extension guide, enabling easy replacement and assembly without tools, with a latching device and adaptable positioning for efficient use of space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple different devices are used for fixing different functional units to the drawer extension guide, then each functional unit can be securely fixed, but the manufacturing costs increase and the device complexity increases
Solution Approach 1:
The patent implements a universal coupling element that can fix multiple different functional units (ejection devices, damping devices, retraction devices) using a single standardized interface. The coupling element features a standardized recess with a latching mechanism that accommodates various functional units without requiring different fixing devices for each type, thereby reducing device complexity while maintaining reliable fixing through the consistent latching action.
Solution Approach 2:
The patent merges the fixing function into a single integrated coupling element that combines the mounting interface and latching mechanism. Instead of using separate fixing devices for each functional unit, the coupling element integrates all fixing capabilities into one component that can securely hold different types of functional units through its standardized design and latching system.
2Reliability
If multiple different devices are used for fixing different functional units, then each functional unit can be securely fixed, but the manufacturing costs increase
Solution Approach 1:
The universal coupling element reduces manufacturing costs by eliminating the need to produce multiple different fixing devices. The standardized design allows for mass production of a single coupling element type that serves all functional units, reducing tooling costs, inventory requirements, and assembly complexity while maintaining secure fixing through its effective latching mechanism.
3Reliability
If a functional unit is fixed to the drawer extension guide, then the functional unit can move with the drawer rail, but the assembly time increases when multiple devices are required
Solution Approach 1:
The universal coupling element with its standardized interface and latching mechanism enables rapid assembly of different functional units without requiring multiple different fixing devices. The consistent design allows assembly personnel to quickly identify and attach the correct functional unit to the appropriate coupling element, significantly reducing assembly time while ensuring reliable attachment and movement with the drawer rail.
4Productivity
If the coupling element is hook-shaped, then the functional unit can be quickly mounted, but the fixing mechanism becomes simpler
Solution Approach 1:
The hook-shaped coupling element provides a simple yet effective mounting interface that enables quick attachment of functional units. The hook geometry naturally guides the functional unit into place and provides a straightforward engagement mechanism, achieving fast mounting speeds while maintaining sufficient structural complexity to ensure reliable fixing through the latching mechanism.
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 reduces manufacturing costs, simplifies assembly, and allows for the use of existing devices with new functional units, enhancing flexibility and reducing assembly time while optimizing space utilization.
Implementation Method 1
the coupling element has a latching device
Data Source
AI summary
A device attaches a functional unit to a rail of a drawer pull-out guide. The device has at least one coupling element so that at least two different functional units can be selectively fixed to the drawer pull-out guide.