Pull-out system
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Solution Overview
Problem
In pull-out systems, the lack of synchronization between slide rails on both sides leads to misalignment and increased force required for drawer operation, resulting in noise due to pinching movements.
Innovation Solution
A synchronization unit is introduced, comprising a roller part, synchronization bar, deflectable element, and leaf spring, which synchronizes the movement of movable rails by rotating the roller parts and maintaining tension through the leaf spring, ensuring synchronized operation of slide rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If slide rails on both sides are operated individually without synchronization, then the structure is simple and easy to manufacture, but the drawer position becomes misaligned and greater force is required for operation
Solution Approach 1:
A synchronization unit is introduced as an intermediary mechanism between the two slide rails. This unit includes a first synchronization bar connected to the first slide rail and a second synchronization bar connected to the second slide rail, which work together to coordinate the movement of both slide rails and ensure synchronized operation
Solution Approach 2:
The synchronization mechanism is divided into separate modular components including synchronization bars, rolling units, and deflectable elements that can be independently manufactured and assembled. The synchronization unit itself is designed as a detachable module that can be easily attached to and detached from the slide rails
2Ease of operation
If a synchronization unit is added to coordinate slide rail movements, then operation smoothness and alignment are improved, but the device complexity and assembly difficulty increase
Solution Approach 1:
The synchronization unit is designed as a separate modular component that can be independently manufactured and then easily attached to the slide rails. This modular approach allows for simplified manufacturing of individual components while maintaining the overall synchronization function
Solution Approach 2:
The synchronization unit incorporates a deflectable element that can flexibly adapt to movement differences between the two slide rails. This dynamic element absorbs misalignment and ensures continuous synchronized operation without requiring precise manufacturing tolerances
3Ease of manufacture
If slide rails are individually operated without synchronization, then manufacturing and assembly are simple, but noise occurs due to pinching movements and misalignment
Solution Approach 1:
The synchronization unit acts as a mediator that coordinates the movement of both slide rails, preventing pinching movements and misalignment that generate noise. The rolling units within the synchronization unit further reduce friction and noise during operation
Solution Approach 2:
The deflectable element in the synchronization unit changes its deformation state to accommodate and synchronize the movement parameters of the two slide rails, ensuring they move at consistent speeds and positions to eliminate pinching and noise
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 synchronization unit enhances assembly convenience, productivity, and smooth movement of slide rails by synchronizing their operation, reducing the force needed and minimizing noise.
Implementation Method 1
a leaf spring that maintains a tension of the deflectable element
Implementation Method 2
a roller part, a synchronization bar connected to the roller part
Data Source
AI summary
An embodiment of the present invention provides a pull-out system comprising: at least two slide rails each having a fixed rail, a middle rail slidably arranged on the fixed rail, and a movable rail slidably arranged on the middle rail; and a synchronization means for synchronizing the movement of the movable rail, wherein the synchronization means comprises a roller unit, a synchronization bar connected to the roller unit, and a deflectable element having an end portion fixe to the roller unit and an opposite end portion connected to the movable rail, and the movable rail is configured to move as much as the amount of rotation of the roller unit.