Pneumatic Dent Removing Tool Vacuum Ejector Design
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Solution Overview
Problem
Conventional dent removal methods for sheet metal are time-consuming, require significant effort, and can reduce the metal's strength, while suction tools pose safety risks due to uneven suction forces.
Innovation Solution
A dent removing tool featuring a vacuum ejector with an air tube fitting and a jet faucet fitting, utilizing high-pressure air to create a pressure difference for effective suction, reducing the need for manual effort and minimizing material deformation, while ensuring even force distribution for enhanced safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hammering method is used to remove dents, then the dent can be removed, but the sheet metal strength is reduced and significant time and effort are consumed
Solution Approach 1:
The patent replaces the conventional mechanical hammering system with a pneumatic vacuum system. The vacuum ejector creates a vacuum state through high-pressure air injection, generating suction force that pulls the dent outward without direct mechanical contact, thereby preserving sheet metal strength while achieving dent removal.
Solution Approach 2:
The patent employs pneumatic principles by using high-pressure air injected into the vacuum ejector to create a vacuum state. The pneumatic system generates controlled suction force through pressure differential, enabling dent removal without the mechanical impact that would compromise metal strength.
2Productivity
If suction tool is used to remove dents, then time and effort are saved, but user safety is compromised due to uneven suction forces
Solution Approach 1:
The patent applies local quality by designing the suction force distribution to be uniform across the suction cup surface. The vacuum ejector creates evenly distributed vacuum pressure that acts uniformly on the sheet metal, preventing sudden dislodgement and ensuring user safety while maintaining high productivity.
3Ease of operation
If conventional hammering method is used, then dent removal is achieved, but significant time and effort are consumed
Solution Approach 1:
The patent replaces the multi-step mechanical process (disassembly, hammering, leveling) with a single pneumatic vacuum operation. This substitution dramatically reduces both time consumption and operational complexity, as the vacuum system directly pulls the dent outward without requiring intermediate steps.
4Force
If suction cup grips tightly to remove dents, then dent removal force is sufficient, but safety risk increases due to potential sudden dislodgement
Solution Approach 1:
The patent ensures uniform suction force distribution across the suction cup surface through the vacuum ejector design. This even distribution prevents localized stress concentration that could cause sudden dislodgement, maintaining sufficient gripping force for effective dent removal while ensuring user safety.
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 significantly reduces time and effort required for dent removal, enhances user safety by distributing suction force evenly, and minimizes the impact on the sheet metal's strength, achieving efficient and safe dent repair.
Implementation Method 1
The high pressure of air inputs to the inner passage of the vacuum ejector creates pressure differences such that the suction cup creates enough suction to draw at the sheet metal and remove the dent
Data Source
AI summary
A pneumatic dent removing tool, wherein a sleeve is sheathed onto a vacuum ejector, and the inner screw thread of the sleeve is screwed to the outer screw thread of the vacuum ejector such that the combination of the free space of the vacuum ejector and the sleeve are sealed together. An air tube fitting opening is connected with an air tube which contains a suction cup. A jet faucet fitting opening connects with a jet faucet, and the jet faucet is connected with an air supply hose. The user need only eject the high pressure air into the vacuum ejector to generate suction under the suction cup. This process achieves the function of saving time and effort, increasing user safety, and decreasing the negative impact on the strength of the sheet metal.