Oppositely arranged swing piston type vacuum pump used for automobiles

A technology of vacuum pump and piston type, which is applied in variable capacity pump components, components of pumping devices for elastic fluids, pumps, etc., can solve the problems of high noise and short continuous working time, and achieve high output power and continuous The effect of long working hours and high work efficiency

Inactive Publication Date: 2011-06-15
SHANGHAI AUTOMOTIVE BRAKE SYST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current vehicle vacuum pumps use vane pumps, which have

Method used

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  • Oppositely arranged swing piston type vacuum pump used for automobiles
  • Oppositely arranged swing piston type vacuum pump used for automobiles
  • Oppositely arranged swing piston type vacuum pump used for automobiles

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[0008] The present invention will be further described below in conjunction with the accompanying drawings.

[0009] refer to figure 1 and figure 2 , The opposed rocking piston vacuum pump of the present invention includes a pump body 1 , a power source 2 , an eccentric shaft 3 and a pair of pistons 4 .

[0010] The pump body 1 includes two opposite outer end surfaces 11 , and a first through hole 110 is respectively defined on the two outer end surfaces 11 , and an outer end cover 14 sealing the first through hole is provided in each first through hole 110 . A cylinder 15 is also formed inside the pump body 1 , and the cylinder 15 defines a chamber 16 . The cylinder body 15 includes two inner end faces 151 respectively arranged relative to the two outer end faces 11, and a second through hole 150 is respectively opened on the two inner end faces 151, and each second through hole 150 is provided with a sealing second through hole 150. The inner end cap 17 of the through ho...

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Abstract

An oppositely arranged swing piston type vacuum pump used for automobiles comprises a pump body, a power source, an eccentric shaft and a pair of pistons, wherein an external end cover is arranged on each external end surface of the pump body, a cylinder body is formed in the pump body and comprises two internal end surfaces arranged relative to the two external end surfaces, and an internal end cover is arranged on each internal end surface. An exhaust hole and an air inlet pipe connector which are communicated with the cylinder body are also arranged on the surface of the pump body. The eccentric shaft and the pair of pistons are all arranged in the cavity of the cylinder body, the eccentric shaft is driven to rotate by the power source, the pair of pistons are arranged at an angle of 180 degrees in between, each piston comprises a piston head and a connecting rod, a seal ring is arranged on the periphery of the piston head, one end of the connecting rod is connected with the piston head, and the other end of the connecting rod is connected with the eccentric shaft, the piston heads of the pistons are respectively opposite to the internal end covers, and the piston heads and the internal end covers are respectively provided with a check valve. The oppositely arranged swing piston type vacuum pump has the advantages of no noise which can be generated by friction of vanes, high working efficiency and long continuous working period.

Description

technical field [0001] The present invention relates to vacuum pumps. Background technique [0002] Automotive brake boosters use vacuum as their operating energy source. Generally, the vacuum source is provided by an engine or a vacuum pump. Most of the current vehicle vacuum pumps use vane pumps, which have the disadvantages of high noise and short continuous working time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a vehicle vacuum pump with low noise and long continuous working time. [0004] The technical solution adopted in the present invention is: a kind of opposed swinging piston vacuum pump for automobiles, including a pump body, a power source, an eccentric shaft and a pair of pistons; A first through hole is provided on the outer end surface, and an outer end cover is provided in each first through hole to seal the first through hole; a cylinder body is formed in the pump body, and a chamber is...

Claims

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Application Information

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IPC IPC(8): F04B3/00F04B53/14F04B53/16F04B53/10F04B53/00B60T13/46
Inventor 李哲卜凡彬葛宏李妮隆德锋欧阳光明
Owner SHANGHAI AUTOMOTIVE BRAKE SYST
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