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Air pump piston with oil return holes

An oil return hole and piston technology is applied in the field of air pump pistons with oil return holes, which can solve the problems of easy oil channeling of the air pump, non-compliance with environmental protection requirements, and poor oil return effect, so as to achieve good oil return effect and reduce oil channeling of the air pump. Effect

Inactive Publication Date: 2009-11-25
LONGKOU DACHUAN PISTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The piston used on the existing automobile air pump is composed of two air rings and one oil ring. The disadvantages are: the oil return effect is not good, the air pump is easy to leak oil, and it does not meet the environmental protection requirements.

Method used

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  • Air pump piston with oil return holes

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Embodiment Construction

[0008] Referring to the accompanying drawings, a piston of an air pump with an oil return hole is composed of a piston body 1, two gas rings 5, 6 and an oil ring 4 are arranged in turn on the upper end of the piston body 1, and a concave diameter is arranged on the lower side of the oil ring 4 3. The recessed diameter 3 is provided with an inclined surface, and a plurality of oil return holes 2 are arranged on the inclined surface; the diameter of the recessed diameter 3 is 0.5-2 mm smaller than the outer diameter of the piston, and the number of oil return holes is 4-16, and its diameter is Ф1.0~4.0mm. In this embodiment, the concave diameter is 1 mm smaller than the outer diameter of the piston, and the number of oil return holes is 8, and the diameter thereof is Ф2 mm.

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Abstract

The invention belongs to the part of a vehicle air pump and in particular relates to an air pump piston with oil return holes, which is characterized in that the lower side of an oil control ring is provided with a concave path, the concave path is provided with an incline, and the incline is provided with a plurality of oil return holes. Therefore, the invention has good oil return effect, can reduce the oil leakage and accords with the environment protection requirement.

Description

Technical field: [0001] The invention belongs to parts of an automobile air pump, in particular to a piston of an air pump with an oil hole. Background technique: [0002] The piston used on the existing automobile air pump is composed of two air rings and one oil ring. Its disadvantages are: the oil return effect is not good, the air pump is easy to leak oil, and it does not meet the environmental protection requirements. Invention content: [0003] The purpose of the present invention is to provide an air pump piston with an oil return hole that has good oil return effect, can reduce oil leakage in the air pump, and meets environmental protection requirements. [0004] The technical scheme of the present invention is: a piston of an air pump with an oil hole, which is composed of a piston body, and two gas rings and an oil ring are arranged in turn on the upper end of the piston body, and the feature is: a concave diameter is arranged on the lower side of the oil ring ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/14
Inventor 郑德本
Owner LONGKOU DACHUAN PISTON