Patent ID: 9702441
Date: 2017-07-11
CPC Classifications: F16H

Claim:
1. A chain tensioner comprising: a tensioner body having a cylindrical plunger bore with an open end; a cylindrical plunger slidably inserted in the plunger bore, the plunger including a plunger body and a check valve provided inside the plunger body; and biasing means accommodated inside an oil pressure chamber formed between the plunger bore and a rear end of the plunger such as to be able to expand and contract and to bias the plunger outward, wherein an oil reservoir chamber is formed on a side closer to a closed end of the cylindrical plunger inside the plunger body, a connection/adjustment groove forming an oil supply space is formed in an inner circumferential surface of the plunger bore, an oil supply hole for supplying oil to the supply space is formed in the plunger bore, and a plunger hole for supplying oil from the supply space to the oil reservoir chamber is formed in the plunger body.