Patent ID: 9618097
Date: 2017-04-11
CPC Classifications: F16H

Claim:
1. A tensioner comprising: a tensioner body having a plunger housing hole and a ratchet housing groove; a plunger slidably inserted into the plunger housing hole; and a ratchet disposed in the ratchet housing groove in a state of being capable of swinging about a ratchet pin supported on the tensioner body, wherein the tensioner body has a hole outer circumferential wall disposed on an outer circumference of the plunger housing hole, and a pair of pin support walls that is disposed apart from each other in a pin longitudinal direction of the ratchet pin and supports both end sides of the ratchet pin, the hole outer circumferential wall has a pair of outer circumferential wall portions crossing a virtual line extending in the pin longitudinal direction through a center of the plunger housing hole, at least one of outer side surfaces of the pair of pin support walls is formed on an inner side, in the pin longitudinal direction, of an outer side surface of one of the outer circumferential wall portions, and wherein the pair of pin support walls includes a first pin support wall facing a tensioner mounting object side and a second pin support wall on an opposite side; the pair of outer circumferential wall portions has a first outer circumferential wall portion facing the tensioner mounting object side and a second outer circumferential wall portion on the opposite side; and an outer side surface of the second pin support wall is formed on an inner side, in the pin longitudinal direction, of an outer side surface of the second outer circumferential wall portion; a stopper lever that is fixed to a pin end of the ratchet pin, which protrudes from the outer side surface of the second pin support wall, wherein a distance in the pin longitudinal direction between the outer side surface of the second pin support wall and the outer side surface of the second outer circumferential wall portion is set greater than a thickness, in the pin longitudinal direction, of the stopper lever.