Pull-Out Drawer Guide With Latch Stabilization for Longer Extension
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Solution Overview
Problem
Existing pull-out guides for drawers, especially those with a face-frame arrangement, face limitations in pull-out length and weight capacity due to lateral movement play and instability.
Innovation Solution
A pull-out guide with a roller carriage featuring a latch element to minimize lateral movement play, combined with an automatic retraction mechanism and support elements to enhance stability and weight capacity, allowing for increased pull-out length and secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lateral guiding by rollers is kept short to maximize pull-out length, then the pull-out length is improved, but the lateral movement play increases
Solution Approach 1:
A latch element is introduced as an intermediary component between the drawer rail and roller carriage. This latch element engages with a guide face on the drawer rail to prevent lateral movement, while the rollers continue to provide the primary pull-out guidance. The latch element acts as a mediator that allows full pull-out extension without compromising lateral stability.
2Device complexity
If the roller carriage is designed with minimal components to reduce complexity, then the device complexity is reduced, but the weight capacity decreases
Solution Approach 1:
The roller carriage is segmented into distinct functional components: rollers for movement guidance, a latch element for lateral stabilization, and a bearing face for load distribution. This segmentation allows each component to be optimized for its specific function while working together to handle high weights. The modular design maintains simplicity while increasing capacity.
3Stability of the object's composition
If the latch element is made prominent to ensure engagement, then the lateral guidance is improved, but the risk of jamming increases
Solution Approach 1:
The latch element is designed to engage with the drawer rail in a dimension perpendicular to the pull-out direction. By engaging laterally rather than along the movement axis, the latch provides effective lateral guidance without interfering with the smooth linear motion of the drawer. This dimensional separation prevents jamming while ensuring stable lateral positioning.
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 significantly reduces lateral movement play, increases the permissible pull-out length and weight capacity, and ensures smooth, secure operation of the drawer, including automatic closure and noise reduction.
Implementation Method 1
a roller carriage is provided, the rollers of which roller carriage, during a movement of the rails relative to each other, roll on a guide face of the respective rail
Data Source
AI summary
A pull-out drawer guide having a cabinet rail for attaching to a furniture cabinet, a drawer rail for attaching to a drawer, a roller carriage having rollers, which, during relative movement of the rails, roll on a guide face of the respective rail. The pull-out guide includes on the cabinet rail, an automatic retraction mechanism which, by means of a catch element, catches the drawer rail in a closure movement and moves it to a closed position relative to the cabinet rail. The cabinet rail has a stop element, and the drawer rail has an abutment element, wherein, at a catch position of the cabinet rail, a distance between the stop and abutment elements is smaller than a maximum length of movement of a coupling element of a force accumulator of the automatic retraction mechanism, the distance being parallel to a direction of movement of the drawer rail.