US 12,338,894 B2
Tensioner with dual damping system for a belt drive
Edevon Costa, Indaiatuba (BR); Eduardo Souza, Indaiatuba (BR); Luca D'Amicantonio, San Bernardo d'Ivrea (IT); and Antonio Gasper Junior, Indaiatuba (BR)
Assigned to MUVIQ S.R.L., Ivrea (IT)
Appl. No. 18/567,126
Filed by PROPULSION SOLUTIONS S.R..L., Ivrea (IT)
PCT Filed Jun. 3, 2022, PCT No. PCT/IB2022/055202
§ 371(c)(1), (2) Date Dec. 5, 2023,
PCT Pub. No. WO2022/259109, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 102021000014756 (IT), filed on Jun. 7, 2021.
Prior Publication US 2024/0263688 A1, Aug. 8, 2024
Int. Cl. F16H 7/12 (2006.01); F16H 7/08 (2006.01)
CPC F16H 7/1218 (2013.01) [F16H 2007/081 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A tensioner comprising:
a fixed part provided with a pivot tube defining an axis (A),
an eccentric arm rotatably mounted on the pivot tube about the axis (A),
a pulley rotatable about an axis (B) defined by the arm and configured to cooperate with a timing belt,
a first spring-damper assembly interposed between the arm and the fixed part, and
a second spring-damper assembly configured to act between the arm and the fixed part from a predetermined angle of rotation of the arm with respect to the fixed part, wherein the second spring-damper assembly comprises:
a bushing rotatably mounted on the pivot tube about the axis (A),
a spring coaxial to the pivot tube having a first end constrained to the fixed part and a second end constrained to the bushing, the spring acting torsionally between the fixed part and the bushing,
wherein the arm and the bushing are connected to each other with angular clearance.