Tool cabinet
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Solution Overview
Problem
Conventional tool cabinets experience asynchronous rotation of lifting units, leading to twisting of the linkage rod and unsmooth movement of the working platform due to delayed rotation of threaded rods, especially as the linkage rod lengthens.
Innovation Solution
Incorporating a control unit electrically connected to the motors of the driving units to synchronize the movement of the threaded rods, ensuring synchronous rotation and smooth movement of the working platform by using speed reduction mechanisms and guide rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single driving unit is used to rotate the threaded rod of one lifting unit, then the structure is simple, but the threaded rods of the two lifting units rotate asynchronously causing twisting of the linkage rod and unsmooth movement
Solution Approach 1:
The patent combines two driving units (first and second driving units with motors) to independently and synchronously control the rotation of both threaded rods. This merging of driving functions eliminates the asynchronous rotation problem caused by a single driving unit, ensuring smooth and synchronized lifting motion without compromising structural simplicity.
Solution Approach 2:
The control unit receives signals from sensors that detect the positions and states of the lifting units, then adjusts the rotation speed and timing of the two motors accordingly. This feedback mechanism ensures synchronous rotation of the threaded rods and prevents linkage rod twisting, maintaining movement smoothness.
2Stability of the object's composition
If the linkage rod is made longer to connect the lifting units, then the structure is more stable, but the asynchronous rotation defect becomes much more apparent causing greater twisting
Solution Approach 1:
By using two independent driving units controlled by a central control unit, the system ensures that both threaded rods rotate synchronously regardless of the linkage rod length. This eliminates the twisting problem that becomes more apparent with longer linkage rods, maintaining both structural stability and rotation synchrony.
Solution Approach 2:
The control unit continuously monitors the positions of both lifting units through sensors and adjusts the motor rotations to maintain synchrony. This feedback control compensates for any dimensional variations in the linkage rod, ensuring consistent synchronous rotation and preventing twisting even when the linkage rod is long.
3Ease of operation
If the threaded rod rotates to lift the working platform, then the lifting function is achieved, but the asynchronous rotation of threaded rods causes twisting of the linkage rod
Solution Approach 1:
The patent uses two driving units with motors that are controlled to rotate the threaded rods synchronously. This ensures that the lifting function is achieved while preventing the linkage rod from twisting due to asynchronous rotation, maintaining both operational ease and structural integrity.
Solution Approach 2:
Sensors detect the positions of the lifting units and provide feedback to the control unit, which adjusts the rotation of the motors to ensure synchronous operation. This feedback control prevents linkage rod twisting while maintaining the lifting function, ensuring smooth operation throughout the lifting process.
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 tool cabinet achieves synchronized movement of the working platform, preventing twisting and ensuring smooth operation by synchronizing the rotation of the threaded rods, enhancing usability and stability.
Implementation Method 1
Each of the lifting units 3 has a guide tube 301, a nut 302 that is disposed on a top end of the guide tube 301, a threaded rod 303 that is rotatably connected to the working platform unit 2, and that is threadedly connected to the nut 302
Implementation Method 2
a drive bevel gear 502 that is connected to the motor 501, and that meshes with the transmission bevel gear 304 of one of the lifting units 3
Implementation Method 3
The cabinet body 1 includes two slide rails 101. The working platform unit 2 has two extension members 201 respectively and slidably inserted into the slide rails 101
Data Source
AI summary
A tool cabinet includes a cabinet body having two guide rails, a working platform unit having a movable platform member and two hollow extension members, two lifting units each having a threaded rod, two driving units, and a control unit. The extension members are respectively slidable relative to the guide rails. The threaded rods respectively extend through the extension members and telescopically into the guide tubes. Each driving unit has a motor, and a speed reduction mechanism driven to rotate the threaded rod of a respective lifting unit. The control unit is connected to the motors for synchronizing movements of the motors.