Rotation damper for motor vehicle safety belt reel, has viscous fluid between hollow piston and opposing casing to create limited power transmission

摘要

The rotation damper for a motor vehicle uses a viscous fluid as a medium for limiting force transmission. The belt shaft (12) has a hollow piston (25) central shaft (17) coupled to it, so that the piston is movable relative to the fixed opposing casing (27). The viscous fluid is rolled between the hollow piston and opposing casing to create a damped force transmission.