Pull-Out Guide Synchronization Rod Positioning to Reduce Width
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Solution Overview
Problem
Existing pull-out guides for furniture drawers are bulky due to broad drive devices, which occupy excessive space and hinder smooth operation and synchronization.
Innovation Solution
The pull-out guide design positions the fastening region for the synchronization rod below the drawer rail, allowing drive devices to be placed between the drawer and carcass rails, reducing the overall width and enabling a more compact configuration with a synchronization rod that spans below the drawer rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If drive devices are arranged on both sides of the drawer rail, then synchronization of drawer movement is achieved, but the overall width and space requirement increase significantly
Solution Approach 1:
The patent relocates the fastening region for the synchronization rod from the lateral sides of the drawer rail to the lower side, effectively moving the synchronization mechanism to a different spatial dimension. This allows the synchronization rod to extend below the drawer rail rather than alongside it, dramatically reducing the horizontal width of the pull-out guide while maintaining synchronization functionality.
Solution Approach 2:
The synchronization rod and bearing device are nested within the space between the drawer rail and carcass rail, utilizing the vertical gap that already exists in the structure. This nesting approach allows the synchronization mechanism to occupy unused vertical space rather than expanding the horizontal footprint, achieving compact integration.
2Reliability
If drive devices are made broad to ensure stable operation, then reliability improves, but the space requirement and width increase
Solution Approach 1:
The drive devices are repositioned from a horizontal arrangement to a vertical arrangement, with the synchronization rod extending below the drawer rail. This dimensional change allows the drive mechanisms to operate within the vertical space between the drawer rail and carcass rail, reducing their horizontal footprint while maintaining operational stability.
3Ease of manufacture
If the fastening region is positioned above or on the side of the drawer rail, then mounting is simplified, but the overall width and space consumption increase
Solution Approach 1:
The fastening region is relocated from the lateral or upper surface of the drawer rail to the lower side, utilizing the vertical dimension for mounting. This allows the synchronization rod to be attached below the drawer rail, simplifying the mounting process while simultaneously reducing the horizontal width of the entire pull-out guide assembly.
Data Source
AI summary
A pull-out guide for a drawer includes a carcass rail configured to be arranged on a side of a furniture carcass, and a drawer rail configured to be arranged on a drawer. The drawer rail is displaceably supported on the carcass rail in an opening- and closing direction, and the drawer rail has an upper side facing towards the drawer and a lower side spaced from the upper side by at least one side limb. A bearing device is provided for a synchronization rod of a synchronization device. The bearing device includes a fastening region for the synchronization rod, and the fastening region is arranged below the underside of the drawer rail.