Electric slide rail
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Solution Overview
Problem
Existing electric slide rails require more labor to manually push and pull drawers when the motor is powered off, and the large gap between the drawer and cabinet body leads to reduced service life and volume, as well as dust and water vapor intrusion.
Innovation Solution
An improved electric slide rail design featuring a motor driving device with a clutch and linkage structure that disconnects when the motor is off, allowing easy manual operation and reducing the gap between the drawer and cabinet, while maintaining automatic functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the motor is directly connected to the drive gear and drive rack, then automatic pushing and pulling is achieved, but manual pushing and pulling becomes more laborious due to motor torque resistance
Solution Approach 1:
A clutch is introduced as an intermediary component between the motor and the drive mechanism. The clutch selectively engages or disengages the motor from the drive gear, allowing automatic operation when engaged and easy manual operation when disengaged, thus resolving the contradiction between automation and manual ease of operation
2Extent of automation
If the motor is installed between the fixed rail and fixed rail bracket, then automatic drive is achieved, but the gap between drawer side walls and cabinet body is enlarged
Solution Approach 1:
The motor installation position is moved from the horizontal dimension (between fixed rail and bracket) to the vertical dimension (above the slide rail). This spatial reconfiguration allows the motor to drive the mechanism without occupying horizontal space that would reduce drawer volume, while maintaining the automatic drive function
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 effortless manual operation when the motor is off, extends the service life by preventing dust and water entry, and increases drawer volume by optimizing the motor's placement.
Implementation Method 1
the clutch is disconnected, the transmission between the motor and the slide rail is disconnected
Implementation Method 2
the torque is transmitted between the motor and the slide rail when the clutch is closed, so that the motor drives the slide rail to move linearly along the fixed rail
Implementation Method 3
a gear engaged with the rack is mounted on the slide rail
Implementation Method 4
a rack is provided on the rack housing, a gear engaged with the rack is mounted on the slide rail
Data Source
AI summary
An improved electric slide rail includes a motor driving device and two slide rail assemblies symmetrically arranged. Every slide rail assembly includes a slide rail and a fixed rail, wherein the slide rail is slidably sleeved on the fixed rail, a rack housing is sleeved on an outer side of the fixed rail, a rack is provided on the rack housing, a gear engaged with the rack is mounted on the slide rail; the motor driving device is installed on the slide rail through a fixing device and is electrically connected with a controller. The improved electric slide rail further includes a clutch which is electrically connected with the controller, wherein the clutch is arranged at a side where an output shaft of a motor of the motor driving device is provided, and is connected with the slide rail through a linkage structure.