| 摘要 |
Provided is a simple-structured tensioner that can reduce processing and assembling workload and maintain the tensioner performance constant, as well as store a sufficient amount of oil. The tensioner includes a plunger 20, a housing 30, an inner sleeve 40, a check valve 50, and a biasing unit 60. The inner sleeve 40 includes a cylindrical body 41 having an inner part that serves as an oil reservoir chamber 13, a sleeve bottom 42 formed at one end of the cylindrical body 41, an oil hole 43 formed in the sleeve bottom 42, and a ball seat 44 which protrudes in a cylindrical shape toward an oil pressure chamber 12 integrally with and continuously from an edge of the oil hole 43 and on which a check ball 51 is seated. |
| 主权项 |
1. A tensioner comprising:
a plunger having a plunger hole that is open on a rear side; a housing having a plunger bore that is open on a front side and accommodates the plunger; an inner sleeve disposed inside the plunger hole and dividing an internal space formed between the housing and the plunger into an oil pressure chamber and an oil reservoir chamber; a check valve disposed inside the plunger hole and preventing oil from flowing reversely from the oil pressure chamber into the oil reservoir chamber; and a biasing unit that biases the plunger toward the front side, wherein the check valve includes a check ball, and the inner sleeve includes a cylindrical body having an inner part that serves as the oil reservoir chamber, a sleeve bottom formed at one end of the cylindrical body, an oil hole formed in the sleeve bottom, and a ball seat which protrudes in a cylindrical shape toward the oil pressure chamber integrally with and continuously from an edge of the oil hole and on which the check ball is seated. |
