Clamping device for use in belt tensioner of auxiliary belt drive of internal combustion engine, comprises housing, slide bearing piston longitudinally movable in housing and compression spring enclosing housing and piston

摘要

#CMT# #/CMT# The clamping device comprises a housing, a slide bearing piston longitudinally movable in the housing and a compression spring enclosing the housing and the piston. The compression spring on one hand applies force on the housing and on the other hand on the piston in the direction of extension of the clamping device. The slide bearing has a plastic-metal bearing pair and the housing is formed in the area of the slide bearing of a free-standing metal sleeve (12), in which the piston is placed by a plastic bushing (11). #CMT# : #/CMT# The piston is provided with another plastic bushing, which is placed in a metal bushing fixed inside an end section of the metal sleeve. #CMT#USE : #/CMT# Clamping device for use in a belt tensioner of an auxiliary belt drive of an internal combustion engine. #CMT#ADVANTAGE : #/CMT# The slide bearing has a plastic-metal bearing pair and the housing is formed in the area of the slide bearing of a free-standing metal sleeve, in which the piston is placed by a plastic bushing, where the piston is provided with another plastic bushing, which is placed in a metal bushing fixed inside an end section of the metal sleeve, and thus enables a simple structure and an economical manufacturing of the clamping device, and also enables increasing the service life of the clamping device by improving the wear resistance of the slide bearing. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a longitudinal sectional view of a clamping device. 11,13 : Plastic bushings 12 : Metal sleeve 14 : Metal bushing 29 : Piston sided spring support 31 : Plastic sleeve.