Sheet-metal U-shaped groove labyrinth air prevention cover

Abstract

The invention provides a sheet-metal U-shaped groove labyrinth air prevention cover, belonging to engine cooling systems. The sheet-metal U-shaped groove labyrinth air prevention cover is characterized in that a sheet-metal U-shaped groove outer ring structure is designed in a sheet-metal structured labyrinth air prevention cover so that a circular cylindrical surface is formed at a welding fitting surface, thereby improving the sealing performance of the labyrinth air prevention cover. The main body of the labyrinth air prevention cover is matched with the outer ring simply and reliably, thereby the welding manufacturability is improved and the appearance is attractive.

Description

technical field [0001] The invention relates to a sheet metal U-shaped groove labyrinth windshield, which is applied to heavy commercial vehicles. Background technique [0002] In the cooling system design of traditional heavy-duty commercial vehicles, the windshield generally adopts an ordinary ringless structure. Due to the high efficiency of the labyrinth-type windshield, it is gradually popularized and applied in Jiefang medium-sized commercial vehicles, and is produced by plastic injection molding; because the windshield of heavy-duty vehicles The size is large, and the plastic parts are easy to deform, so it is not conducive to the use of plastic parts, and the sheet metal welding process is often used for manufacturing. In the manufacturing process, the structural design and manufacture of the labyrinth groove part are difficult. After the main body of the windshield is formed, Two vertical sheet metal rings are welded to the body to form the base and outer ring of th...

AI Technical Summary

Problems solved by technology

[0002] In the cooling system design of traditional heavy-duty commercial vehicles, the windshield generally adopts an ordinary ringless structure. Because of the high efficiency of the labyrinth-type windshield, it is gradually popularized and applied in Jiefang medium-sized commercial vehicles, and is produced by plastic injection molding; because the windshield of heavy-duty vehicles The size is large and the plastic parts are easy to deform, so it is not conducive to the use of plastic parts, and the sheet metal welding process is often used for manufacturing. In the manufacturing process, the structural design and manufacture of the labyrinth groove part are difficult. After the main body of the windshield is formed, Two vertical sheet metal rings are welded to the body to form the base and outer ring of the labyrinth slot

Due to the long connection lines between the three parts of the sheet metal, the welding and positioning surfaces are in line contact, so the welding process is extremely poor and the manufacturing is difficult. At the same time, the sealing performance of the U-shaped groove cannot be satisfied, and the appearance is also very ugly.

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