Drawer Synchronous Slide with Elastic Rack Meshing for Stable Movement
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Solution Overview
Problem
Existing drawer slide structures experience uneven rolling friction due to inaccuracies in parts and assembly methods, leading to inconsistent drag resistance and instability in drawer movement, affecting the hand feel and synchronization between slide rails.
Innovation Solution
A drawer synchronous slide design featuring a synchronizing gear on the middle slide rail, with first and second synchronizing racks on the movable and fixed slide rails, respectively, and elastic parts to maintain stable meshing through elastic pressure and limiting gears for precise center distance adjustment, ensuring smooth and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the center distance between the gear and rack is reduced to improve meshing strength, then the meshing strength increases, but the friction force increases, wear becomes serious, and noise and runout occur during movement
Solution Approach 1:
The patent introduces an elastic component that allows the rack to dynamically adjust its position relative to the gear during operation. This dynamic adjustment enables the system to maintain optimal meshing conditions while accommodating variations in center distance, thereby reducing friction and wear without compromising meshing strength
Solution Approach 2:
The elastic component changes the physical state of the rack by introducing controlled elasticity, allowing the center distance to vary within a certain range during operation. This parameter change enables the system to optimize the balance between meshing strength and friction reduction
2Object-generated harmful factors
If the center distance between the gear and rack is increased to reduce friction and wear, then the friction force decreases, but the meshing strength weakens or transmission fails
Solution Approach 1:
The elastic component enables the rack to dynamically adjust its position, maintaining optimal engagement with the gear throughout the operation cycle. This dynamic adjustment ensures that the center distance remains within the optimal range, preventing both excessive friction and loss of meshing strength
Solution Approach 2:
The elastic component acts as a cushioning element that anticipates and compensates for variations in center distance before they lead to transmission failure. This beforehand cushioning ensures continuous stable meshing while accommodating necessary distance variations
3Adaptability or versatility
If the movable slide rail swings relative to the fixed or middle slide rail, then the adaptability to movement variations increases, but the center distance becomes unstable and the drawing action becomes unstable
Solution Approach 1:
The elastic component creates a dynamic system that automatically adjusts to the swing movement of the movable slide rail. As the rail swings, the elastic component absorbs and compensates for the resulting center distance variations, maintaining stable meshing throughout the range of motion
Solution Approach 2:
The elastic component acts as an intermediary element between the gear and rack, mediating the effects of swing movement. It absorbs the destabilizing effects of center distance variation while maintaining the functional relationship between the meshing components
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 enhances the stability and synchronization of the drawer slide by maintaining consistent meshing and reducing wear and noise, resulting in a smoother and more stable drawing action.
Implementation Method 1
an elastic part is arranged on the first synchronizing rack, the tooth-shaped part of the first synchronizing rack is elastically pressed towards the synchronizing gear under the action of elastic stress of the elastic part
Data Source
AI summary
A drawer synchronous slide includes a fixed slide rail (1), a middle slide rail (2), and a movable slide rail (3) connected to each other slidably, wherein a synchronizing gear (8) is arranged on the middle slide rail (2), a first synchronizing rack (6) and a second synchronizing rack (7) arranged horizontally and oppositely are respectively fixed onto the movable slide rail (3) and the fixed slide rail (1), left and right sides of the synchronizing gear (8) are respectively meshed and work in conjunction with a tooth-shaped part of the first synchronizing rack (6) and a tooth-shaped part of the second synchronizing rack (7), an elastic part (61) is arranged on the first synchronizing rack (6), the tooth-shaped part of the first synchronizing rack (6) is elastically pressed towards the synchronizing gear (8) under the action of elastic stress of the elastic part (61).