Switchable Slide Rail Assembly for Dust-Protected Push-Open Drawers
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Solution Overview
Problem
Slide rail assemblies with push-open and self-closing functions are susceptible to dust and foreign object entry through the pushing gap, and are not suitable for locked drawers, as they require an additional hand grip for operation.
Innovation Solution
A slide rail assembly with a switch that enables or disables the push-open function based on user environment or conditions, incorporating a first driving device with an elastic member and locking mechanism, and a second driving device with elastic members, guiding, and capturing mechanisms, while allowing the switch to control the operation of the first driving device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the push-open function is enabled, then the drawer can be opened conveniently without additional hand grips, but dust and foreign objects can enter the drawer through the pushing gap
Solution Approach 1:
The patent applies the dynamics principle by making the push-open function dynamically controllable through a switch mechanism. The system transitions between enabled and disabled states based on user selection, allowing the pushing gap to be either present (for convenience) or eliminated (for protection). This dynamic control resolves the contradiction by adapting the structure to different operational requirements.
2Ease of operation
If the push-open function is enabled, then the drawer operation is convenient, but the slide rail assembly is not suitable for locked drawers
Solution Approach 1:
The switch mechanism enables dynamic adaptation of the slide rail assembly to different drawer types. When the switch disables the push-open function, the assembly becomes suitable for locked drawers that require manual operation, thereby increasing versatility while maintaining operational convenience when needed.
3Shape
If the pushing gap is formed for push-open operation, then the front panel can have a flat and neat appearance, but the drawer is susceptible to dust and foreign object entry
Solution Approach 1:
The invention dynamically controls the presence of the pushing gap through the switch mechanism. In push-open mode, the gap is formed enabling the flat front panel design. When switched to disabled mode, the gap is eliminated to prevent dust and foreign object entry, thus resolving the contradiction between appearance and protection.
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 convenient operation of drawers while preventing dust and foreign object entry by allowing the user to selectively enable or disable the push-open function, maintaining the self-closing functionality and ensuring secure operation without additional hand grips.
Implementation Method 1
The first elastic member is configured to provide a first elastic force along a direction opposite to the first direction
Implementation Method 2
The second elastic member is configured to provide a second elastic force along a direction identical to the first direction
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail, a first driving device, a second driving device and a switch. The second rail is movable relative to the first rail. The first driving device is configured to drive the second rail to open relative to the first rail when the second rail is pushed at a retracted position along a first direction. The second driving device is configured to drive the second rail to close relative to the first rail when the second rail is moved from an open position to a predetermined position. The switch is configured to enable the first driving device in a first state and disable the first driving device in a second state.