CHECK VALVE EMBEDDED IN VACUUM HOSE FOR REDUCING COST AND IMPROVING PERFORMANCE

摘要

The present invention relates to a check valve embedded in a vacuum hose for reducing costs and improving performance, capable of adding an internal structure of the embedded check valve to realize opening and closing pressure equal to or greater than opening and closing pressure of an external check valve, even a smaller diameter. The embedded check valve (100) includes: a housing (110) having the form of a hollow tub, equipped with an air guiding pipe (110) having an air guiding passage (121) allowing air introduced from a booster side to flow toward an engine, and having a plurality of air outlets (101) formed at a front portion of the housing (110) to communicate with an engine side; partitions (130) formed integrally with the air outlets (101), spaced apart from each other near the air outlets (101), and having the air guiding pipe (110) formed through the partitions (130); a spring (200) installed between the partitions (130) and the air outlets (101); a main rubber (300) operating corresponding to force of the spring (200); auxiliary chambers (140, 140) formed integrally with the air guiding pipe (110) and formed at the side of a booster; and a transfer rod (400) formed integrally with the main rubber (300) operating forward or backward corresponding to the force of the spring (200) while employing the air guiding pipe (110) as a guide.;COPYRIGHT KIPO 2018