Trigger-Boosting Pulling Device with Force Doubling Mechanism
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Solution Overview
Problem
Existing hand-operated vacuum pulling devices require excessive physical effort to achieve strong vacuum suction due to the need for thick and powerful springs, and their unitary design leads to material wastage and increased manufacturing costs.
Innovation Solution
A trigger-boosting pulling device with a T-shaped pull grip and a handle trigger that doubles the vacuum suction force, featuring a separable backward ram design for cost reduction and efficient assembly, and a pressure relief seat with an inner thread for controlled vacuum release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick and powerful spring is used to achieve strong vacuum suction force, then the vacuum suction force is improved, but the physical effort required to compress the spring increases
Solution Approach 1:
A lever mechanism is introduced as an intermediary between the user's hand and the spring compression system. The lever amplifies the user's input force, allowing a thin spring to generate sufficient vacuum suction force without requiring excessive physical effort from the user. The lever acts as a force multiplier, translating small hand movements into effective spring compression.
Solution Approach 2:
The direct mechanical compression of a thick spring by hand is replaced with an indirect mechanical system involving a lever and linkage mechanism. This substitution allows the use of a thinner, more efficient spring while maintaining the required vacuum suction force, as the lever system provides mechanical advantage to achieve the necessary compression force.
2Stability of the object's composition
If a unitary design is used for the backward ram, then the structural integrity is improved, but the manufacturing cost increases and material wastage occurs
Solution Approach 1:
The backward ram is divided into multiple separate components that can be manufactured independently using standard machining processes. These segmented parts are then assembled together using conventional fastening methods. This segmentation allows each component to be optimized for its specific function, reduces material wastage during manufacturing, and lowers overall production costs while maintaining the structural integrity needed for the device's operation.
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 device achieves a higher vacuum suction force with reduced effort and lower manufacturing costs by leveraging a T-shaped pull grip and trigger mechanism, and a modular backward ram design, enhancing both performance and efficiency.
Implementation Method 1
The connection bar comprises a spring fit thereto for position restoration of the pull grip
Implementation Method 2
the trigger is pulled to drive the connection lever for doubling the force so as to induce enhanced vacuum suction force in the suction cup
Implementation Method 3
When a piston assembly 90 is driven to induce vacuum, the ring cover assembly 93 can be then operation to drive the piston assembly 90 to move backward
Data Source
AI summary
A trigger-boosting pulling device includes an elongate shank, which receives a backward ram to slidably fit thereon, a suction cup, which is fixed to a rear end of the elongate shank, a hand-operating pump structure, which is fixed to a front end of the elongate shank and includes a T-shaped pull grip that is connected by a connection bar to a piston assembly. The connection bar includes a spring fit thereon for position restoration of the pull grip. The pump cylinder includes a handle mounted thereto. The handle has a trigger that is arranged to drive, via a connection lever, the connection bar. As such, the T-shaped pull grip can be first pulled to induce a suction force to reach an initial level and then the handle is held by a hand and the trigger is pulled to drive the connection lever for doubling the force so as to induce enhanced vacuum suction force in the suction cup.