Automobile oil pump shell

Abstract

The invention relates to the field of oil pumps, in particular to an automobile oil pump shell. The automobile oil pump shell comprises a lower shell, a damping supporting structure, an upper shell, apre-clamping structure and a positioning mounting structure, wherein the pre-clamping structure is connected to the attached side walls of the lower shell and the upper shell, and the pre-clamping structure comprises a pre-clamping sealing ring, an air inlet pipe, an exhaust pipe, a valve, an air bag and a clamping air bag; the side wall of the bottom of the lower shell is connected with the pre-clamping sealing ring, a volume cavity is formed in the pre-clamping sealing ring, the clamping air bag is arranged in the volume cavity, one end of the air inlet pipe communicates with an air bag inlet, and the other end of the air inlet pipe penetrates through the pre-clamping sealing ring and communicates with the clamping air bag. The automobile oil pump shell has the beneficial effects that through the pre-clamping structure, the pre-clamping sealing ring is supported to be expanded to be attached to the inner side wall of a surrounding type plug groove more closely, the sealing performance is improved, the friction force between the expanded pre-clamping sealing ring and the inner side wall of the surrounding type plug groove can be increased, and therefore, the pre-clamping effect is achieved.

Description

technical field [0001] The invention relates to the field of oil pumps, in particular to an automobile oil pump casing. Background technique [0002] The use of the oil pump is to press the oil in the oil pan to the filter, and make the oil pass through the filter and still be reliably transported to each lubricating oil passage and the friction surface of each moving part. When the engine is working, the oil pump works continuously to ensure that the oil circulates continuously in the lubricating oil circuit. [0003] At present, the oil pump is assembled by the upper casing and the lower casing, which are screwed in and installed by multiple bolts. During the installation process of the upper casing and the lower casing, they are fixed by hand. Before screwing in the bolts, it is easy to cause the upper casing and the lower casing. The lower shell shakes and misplaces, causing the position of the bolt to be screwed in to deviate easily, the screwing in process is more cum...

AI Technical Summary

Problems solved by technology

[0003] At present, the oil pump is assembled by the upper casing and the lower casing, which are screwed in and installed by multiple bolts. During the installation process of the upper casing and the lower casing, they are fixed by hand. Before screwing in the bolts, it is easy to cause the upper casing and the lower casing. The lower shell shakes and misplaces, causing the position of the screwed bolt to deviate easily, the screwing process is more cumbersome, and the sealing effect is prone to be poor when it is not tightened during the installation process

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