Foldable Tool Table Gear Transmission for Stable Support Leg Operation
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Solution Overview
Problem
Existing foldable tool tables experience issues with inappropriate engagement between straight racks and gears due to gravity, leading to unstable transmission and potential falling of support legs during use and storage.
Innovation Solution
A tool table design featuring parallel rotating shafts with reinforcing rods and a gear transmission structure, including a blocking plate with knobs to secure the folded position of support legs, and limiting plates to prevent horizontal displacement, ensuring stable support and easy transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If straight racks and gears are used for transmitting folding force, then the support legs can be folded and unfolded, but the engagement between the straight racks and gears becomes inappropriate due to gravity, influencing transmission smoothness
Solution Approach 1:
The patent inverts the traditional gear engagement direction by positioning the gears vertically and the racks horizontally, allowing the racks to drive the gears in a configuration that counteracts gravitational interference. This inversion of the conventional rack-and-gear arrangement ensures smooth transmission during folding operations.
Solution Approach 2:
The patent modifies the geometric parameters of the gear teeth and rack teeth to optimize engagement. Specifically, the gear teeth are designed with adjusted pitch and profile to ensure proper meshing with the horizontal racks, compensating for gravitational effects and maintaining transmission smoothness throughout the folding motion.
2Volume of moving object
If support legs are made foldable to save space and transportation costs, then space occupation is reduced, but the support legs may fall during movement due to inadequate stabilization
Solution Approach 1:
The patent incorporates a locking mechanism that automatically engages when the support legs are folded, performing the stabilization action in advance before movement occurs. The locking structure is designed to catch and secure the folded legs, preventing them from falling during transportation or movement of the workbench.
Solution Approach 2:
The patent introduces a locking mechanism as an intermediary element between the folded support legs and the workbench frame. This mediator component actively secures the folded legs in position, providing the necessary stability during movement without interfering with the compact folded configuration.
3Strength
If solid reinforcing rods are used to support the rotating shafts, then structural strength is improved, but the weight of the workbench increases, raising transportation costs
Solution Approach 1:
The patent employs thin-walled hollow reinforcing rods instead of solid rods to support the rotating shafts. These hollow structures provide adequate structural strength and stiffness while significantly reducing the weight compared to solid rods, thereby lowering transportation costs without compromising support capability.
Solution Approach 2:
The patent utilizes composite construction for the reinforcing rods, combining materials with high strength-to-weight ratios. The hollow rod structure acts as a composite system where the thin wall material provides both structural integrity and weight reduction, optimizing the balance between strength and weight for the support 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
The design stabilizes the support legs in both use and folded states, enhancing transmission smoothness and preventing falling, while reducing weight and transportation costs through the use of hollow reinforcing rods.
Implementation Method 1
a gear transmission structure connected to the rotating shafts, in which a transmission motion is generated between gears as the rotating shafts rotate, so that the rotating shafts rotate steadily
Implementation Method 2
the clamping groove opens downwards, and a portion of an outer circumferential surface of the rotating shaft at a corresponding position is embedded in the clamping groove
Implementation Method 3
when the support legs are in a folded state, the knobs clamp the connecting plate, and fixing the folded position of the support legs
Data Source
AI summary
The present disclosure relates to the field of machining and production of a tool table. Disclosed is a tool table convenient for folding, comprising a table plate body having a concave accommodating cavity at a bottom thereof, two ends of each of parallel rotating shafts being respectively rotatably connected to side walls of the accommodating cavity at the corresponding sides; support legs, an end of each of the support legs being connected to a rotating shaft and the support legs being mounted in the accommodating cavity in a foldable manner, and a connecting plate being fixedly connected between the two support legs; and reinforcing rods, which are hollow rods with a square cross section are provided between the two rotating shafts, an end of each of the reinforcing rods being connected to a rotating shaft.