Tensioner for belt device wherein a high pressure end of the ventilating piston is subjected to a piston flow so that the ventilating piston generates a thrust power and moves forward at a high speed

• Main Authors: CAI, CHENG-ZHE, HUANG, CHENG-ZHI, WANG, JIAN-QIN
• Format: Patent
• Language: Chinese; English
• Published: 16.06.2022
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

A tensioner for a belt device mainly comprises a conveyor tube, a gas generator and a ventilating piston, wherein a high pressure end of the ventilating piston is subjected to a piston flow so that the ventilating piston generates a thrust power and moves forward at a high speed. The piston flow simultaneously produces a jet flow at the outlet ends of a pressure relief vent and a vent hole. The jet flow maintains the average flow direction of the ventilating piston moving forward at high speed through the pressure relief vent. At the same time, the two surfaces of the ventilating piston and the transfer passage are separated by a layer of fluid to reduce friction and keep the ventilating piston moving forward at high speed. The conveyor tube includes a front end, a transfer passage, an oblique opening, an ejector and a tail end. The tail end is fastened with two unidirectional elements, and a passage is formed between the two unidirectional elements to have reliable unidirectional transmission usability. The