Tensioner for a traction device having an overpressure valve with a sealing cage, and traction device drive having a such tensioner

摘要

A hydraulic tensioner for a traction device (1) having a pressure chamber (2) in a housing (3), into which a medium that transmits pressure can be introduced, having a feed unit (5) having a non-return valve (6) at one end (4) of the pressure chamber and having an overpressure relief device (8) at the other end (7) of the pressure chamber (2), wherein the overpressure relief device (8) includes a closure element (11), a housing body (9) and a cage (10) which is at least partly arranged within the housing body (9) and which forms a stop for the closure element (11) on the side remote from the pressure chamber, wherein the cage (10) at least partly covers an end side of the housing body (9) that is remote from the pressure chamber. The invention also relates to a traction device drive having such a tensioner for a traction device.

主权项

1. A hydraulic tensioner for a traction device comprising: a pressure chamber in a housing, a pressure-transmitting medium being introducible into the pressure chamber; a feed unit including a non-return valve on one end of the pressure chamber and an overpressure relief device on the other end of the pressure chamber, the overpressure relief device having a closure element, a housing body and a cage at least partially situated inside the housing body, the cage forming a stop for the closure element on a side remote from the pressure chamber, exclusively the cage covers an entire end side of the housing body remote from the pressure chamber.