Drawer Pull-Out Guide Synchronization Using Snap-On Cable Assembly
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Solution Overview
Problem
Existing sliding element assembly systems, such as those using pull-out runners on furniture, are complex to assemble and require tools, with alignment issues in poor light conditions and a risk of losing locking elements, and the cable tensioning process is cumbersome.
Innovation Solution
A method and kit for assembling sliding elements with pre-assembled deflection rollers and snap-on holders, allowing for tool-free assembly by attaching holders to pull-out guides, laying a cable around the rollers, and adjusting tension using spring-loaded clamping sleeves, which can be secured in place without tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a holder with deflection rollers is mounted using screws on the center rail, then the synchronization device is secure, but the assembly becomes complex and requires tools
Solution Approach 1:
The patent replaces the screw-based mechanical fastening system with a snap-in system using elastic elements (springs) and latching mechanisms. The holder is equipped with elastic arms that snap into recesses on the center rail, eliminating the need for screws and tools while maintaining secure mounting.
Solution Approach 2:
The holder design incorporates self-aligning features where the elastic elements automatically adjust and latch into position when the holder is inserted onto the center rail. The system is self-servicing as the elastic elements provide automatic tensioning and securing without requiring external tools or complex assembly procedures.
2Reliability
If a locking element is pushed into grooves for cable tensioning, then the cable is secured, but alignment is difficult in poor light and the locking element can be lost
Solution Approach 1:
The cable securing mechanism uses spring-loaded elastic elements that automatically engage with the cable and latch into position. The elastic arms self-align with the cable and snap into place, eliminating the need for precise manual alignment. The captive design ensures the locking elements cannot be lost as they are retained within the holder structure.
Solution Approach 2:
The patent replaces the manual groove-alignment system with an elastic latching system. Instead of pushing locking elements into grooves requiring precise alignment, the elastic elements automatically engage the cable through spring-loaded arms that flex and latch, making the operation simple and tool-free.
3Ease of manufacture
If cable sections are mounted separately, then the cable can be assembled, but the assembly process is complex and time-consuming
Solution Approach 1:
The patent combines multiple cable sections and their associated mounting hardware into a single pre-assembled cable pull assembly. The cable sections are already connected and tensioned together as one unit, which is then installed as a single component into the holder, dramatically reducing assembly complexity and time.
Solution Approach 2:
The cable pull is pre-assembled and pre-tensioned during manufacturing before delivery to the customer. This preliminary action of assembling and tensioning the cable sections in advance eliminates the need for complex on-site assembly operations, allowing for quick installation by simply mounting the complete assembly into the holder.
4Productivity
If the synchronization device is pre-assembled, then transport is efficient, but on-site assembly may require complex steps
Solution Approach 1:
The patent divides the synchronization device into modular segments: the holder with integrated deflection rollers and cable tensioning mechanism, and the cable pull assembly. These segments are designed to be pre-assembled for efficient transport but feature simple snap-in connection points that minimize on-site assembly steps while maintaining modularity for easy 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
Enables simple, efficient assembly and transport of sliding elements with synchronized movement, reducing complexity and time required for assembly, and ensuring secure cable tension without the need for tools or precise alignment.
Implementation Method 1
a holder (3) with at least one deflection element (37) which can be snapped onto the pull-out guide (1)
Implementation Method 2
The clamping sleeves (40) are spring-loaded and can be moved independently of one another in the assembly position
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A method for installing a drawer element comprises the following steps: securing a first pull-out guide (1) on a first side wall and securing a second pull-out guide (1) on a second side wall, which is located opposite the first side wall; installing a device (2) for synchronizing the movements of the displaceable rails (8, 9) of the two pull-out guides (1), wherein a holder (3) with at least one deflecting element is fitted or latched on each pull-out guide (1); positioning a cable pull (4) around a deflecting roller (11), which is provided on the pull-out guide (1); coupling at least one rail (7, 8, 9) of each pull-out guide (1) to the cable pull (4) via a connecting device (12); and adjusting the tensioning of the cable pull (4) via a device for adjusting the cable tensioning. The invention also relates to a construction kit for the displaceable mounting of a drawer element, in the case of which the device for synchronizing the movements of the displaceable rails can be installed on the two pull-out guides (1) without use being made of tools. A corresponding construction kit can be installed according to the invention on side walls of furniture structures or domestic appliances.