Hidden Three-Section Drawer Rail with Synchronized Side Motion
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Solution Overview
Problem
Conventional three-sectional hidden sliding rails experience asynchronous sliding at the two sides, leading to a non-smooth operation and potential locking issues when opening or closing drawers, causing inconvenience to users.
Innovation Solution
A three-sectional hidden sliding rail mechanism with a synchronous mechanism using gear rack mechanisms and a connection shaft to ensure synchronized sliding of the left and right sliding rail sub-mechanisms, featuring a fixed guide rail, a middle rail, and a movable guide rail with parallel sliding guide grooves, and 'C'-shaped drive frames supported by steel balls for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional three-sectional hidden sliding rails are used without synchronous mechanism, then the structure is simple and easy to manufacture, but the sliding rails at two sides slide asynchronously causing non-smooth operation and locking issues
Solution Approach 1:
A synchronous mechanism acts as an intermediary between the left and right sliding rail sub-mechanisms. This mechanism includes synchronous gears mounted on the movable guide rails and meshing with racks mounted on the fixed guide rail brackets. The synchronous gears are connected through connection shafts, ensuring that when one side moves, the other side moves simultaneously and synchronously, thereby achieving smooth sliding operation without asymmetry.
2Reliability
If synchronous mechanism with gear rack is added to ensure synchronized sliding, then the sliding operation becomes smooth and synchronized, but the device complexity increases
Solution Approach 1:
The synchronous mechanism serves as a mediator that ensures reliable synchronization between the two sliding rail sub-mechanisms. The gear rack mechanism with synchronous gears and racks provides a mechanical linkage that automatically maintains synchronization, improving reliability without requiring complex electronic control systems.
Solution Approach 2:
The synchronous mechanism is segmented into independent modular components: synchronous gears mounted on movable guide rails, racks mounted on fixed guide rail brackets, and connection shafts linking the gears. This segmentation allows for easier manufacturing, assembly, and maintenance while ensuring reliable synchronization functionality.
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 synchronous mechanism ensures that the sliding rails on both sides of the movable object move in sync, providing a smooth sliding experience and preventing locking issues, enhancing the stability and longevity of the sliding rail system.
Implementation Method 1
The synchronous mechanism comprises gear rack mechanisms which are respectively mounted on the sliding rail sub-mechanisms at the left side and the right side of the movable object horizontally and in parallel. The gear rack mechanisms on the sliding rail sub-mechanisms at the left side and the right side of the movable object are connected through a connection shaft.
Implementation Method 2
each gear rack mechanism comprises a synchronous gear and a rack. The synchronous gear is connected to and mounted on the movable guide rail through a gear bracket. The rack is mounted on the fixed guide rail bracket along a direction of the sliding guide groove of the fixed guide rail. The gear meshes with the rack.
Implementation Method 3
C-shaped drive frames are respectively sleeved in the fixed guide rail and the movable guide rail. Steel ball holes are provided on side walls of two ends of the C-shaped drive frames. Steel balls are arranged in the C-shaped drive frames, and positions of the steel balls are limited by the steel ball holes. The upper end and the lower end of the middle rail are respectively inserted into the C-shaped drive frames and supported by the steel balls.
Data Source
AI summary
A three-sectional hidden sliding rail includes a pair of sliding rail sub-mechanisms symmetrically mounted at a left and a right side of a movable object. Each sliding rail sub-mechanism includes a fixed guide rail, a middle rail, and a movable guide rail. The fixed guide rail is mounted on a fixed object. The movable guide rail is mounted on a side surface of the movable object. The fixed guide rail and the movable guide rail (3) have a sliding guide groove. An upper and a lower end of the middle rail are mounted in the sliding guide grooves of the movable guide rail and the fixed guide rail. The middle rail is able to slide along the sliding guide groove of the fixed guide rail (1), and the movable guide rail is able to slide along the middle rail (2). The sliding rail sub-mechanisms are connected through a synchronous mechanism.