Patent ID: 9005061
Filing Date: 2015-04-14
Classification: F16H

Abstract:
1. Tensioning device of a traction mechanism drive, comprising a base part that is fixed in place, a pivot arm that is allocated to said base part and can pivot about a rotary bearing that includes a hub, a pin of the base part, and a sliding bearing, and a spring that is inserted between the base part and the pivot arm exerts an expansion force and provides a non-positive support of a tensioning roller that is connected to the pivot arm on a traction mechanism, and includes a damping device that damps adjusting movements of the pivot arm, the pin of the rotary bearing is fixed with one end in the base part and with the other end in a support disk and the damping device comprises two separate spring-loaded friction elements, including: a friction disk that is supported with a positive-fit on the support disk connected to the pin of the base part and a friction-fit on the pivot arm, and a friction ring that surrounds a spring end of the spring and is fixed on the pivot arm and is supported with a friction-fit on an inner wall of the base part, wherein the friction ring includes a joint that is supported with a lateral surface with a friction-fit on the inner wall of the base part, and the friction ring has a wedge that is directed inward in the radial direction and is inserted in an operating state between a wedge surface of a projection of the pivot arm extending in the axial direction and a spring end of the spring.