Injector Sealing Ring Removal Tool Guide Elements
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Solution Overview
Problem
Conventional pliers used to remove sealing rings from fuel injectors often damage the injectors, leading to premature replacement, as they fail to differentiate between the sealing ring and the injector during removal.
Innovation Solution
A pair of pliers with pivotally connected levers featuring guide elements and recesses that position the injector correctly, ensuring only the sealing ring comes into contact with the gripping surfaces, thereby preventing damage to the injector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional pliers are used to remove sealing rings from injectors, then the sealing ring can be gripped and removed, but the injector may be damaged by the cutting surfaces
Solution Approach 1:
The patent introduces guide elements as intermediary components between the cutting surfaces and the injector. These guide elements with recesses and stops act as mediators that guide the sealing ring to the cutting surfaces while preventing direct contact between the injector and cutting surfaces, thus enabling sealing ring removal without injector damage
Solution Approach 2:
The pliers are segmented into distinct functional zones: guide elements with recesses for positioning, stopping surfaces for axial limitation, and cutting surfaces for sealing ring removal. This segmentation allows each component to perform its specific function independently, ensuring the injector is protected while the sealing ring is removed
2Adaptability or versatility
If a single device is designed to accommodate multiple injector types, then versatility is improved, but device complexity increases
Solution Approach 1:
The guide elements are designed with recesses and stopping surfaces that can accommodate multiple injector types universally. The same guide element structure serves different injector configurations, allowing a single device to handle various sealing ring sizes and injector geometries without requiring multiple specialized tools
Solution Approach 2:
The guide elements incorporate adjustable or adaptable features such as movable stopping surfaces or flexible recess configurations that can adapt to different injector types dynamically, maintaining versatility while keeping the overall device structure relatively simple
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Device (2) for removing a sealing ring (32) from an injector (30) with two levers (4, 6) pivotably connected to each other, wherein at least one contact surface for gripping a sealing ring (32) mounted on an injector (30) is formed on each of the two levers (4, 6). At least one guide element (14, 16) is provided on at least one of the two levers (4, 6) which is configured to guide the injector (30) such that the sealing ring (32) mounted on the injector (30) is positioned opposite the contact surfaces of the device (2).