Endurance test-device of seat belt for automobile

摘要

PURPOSE: A durability testing apparatus for vehicle seat belt is provided to achieve improved quality of seat belt, while performing durability test for retractor of seat belt. CONSTITUTION: A durability testing apparatus comprises a pneumatic cylinder(10) for permitting a piston(13) to reciprocate, by opening/shutting a first port(11) and a second port(12) through the use of a solenoid valve(20); a first position sensor(14) and a second position sensor(15) arranged onto the pneumatic cylinder, which sense position of the piston; a control unit(60) for controlling opening/shutting operation of first and second ports by position sensors; a sliding rod(30) connected to the piston of the pneumatic through a rod connection bracket(32); a drive pulley(50) having a slave gear(51) to be engaged with a drive gear(31) arranged at a surface of the sliding rod, wherein the slave gear is formed integrally with the drive pulley; a seat belt(70) wound to or drawn out from the drive pulley; and a retractor(80).