Conical elastic sleeve type tensioner for automobile engine timing system

The utility model discloses a conical elastic sleeve type tensioner for an automobile engine timing system, which comprises a shell (1), an oil inlet hole (10) is formed in the rear end in the shell (1), a one-way valve cover (2), a one-way valve assembly (3), a reset spring (4), a throttle valve (5) and a plunger (6) are sequentially arranged on the side surface of the oil inlet hole (10), the annular conical groove (8) is sleeved with a matched elastic sleeve (7); an annular groove (9) matched with the elastic sleeve (7) is formed in the inner wall of the shell (1), and an annular limiting groove (11) is further formed in the front end of the shell (1). According to the adjusting method of the springback distance, the springback distance is adjusted by adjusting the groove width of the annular conical groove and the width of the elastic sleeve. The utility model has the characteristic that the springback distance can be flexibly and randomly adjusted. 本实用新型公开了一种锥形弹性套筒式汽车发动机正时系统用张紧器，包括壳体(1)，壳体(1)内的后端设有进油孔(10