Patent ID: 7077772

Claim:
A tensioner used for imparting proper tension to a wrapping transmission member, comprising: an outer body and an inner body unit; said outer body is provided with a tensioner mounting means and an inner body unit fitting hole; said inner body unit comprises: an inner body; said inner body includes a plunger accommodating hole; a compression spring; a plunger engaging and imparting proper tension to said wrapping transmission member: said compression spring resides within said plunger accommodating hole of said inner body; said compression spring biasing said plunger; a movement backward preventing mechanism for preventing the backward movement of said plunger; said movement backward preventing mechanism comprising: said plunger including an outer circumference and said outer circumference of said plunger including a rack; said inner body including a front end; said front end of said inner body including a cutaway groove formed therein; a pawl body and a pivot shaft of said pawl body; said pawl body includes a pawl; said pivot shaft being affixed to said cutaway groove formed in said inner body; said pawl body being pivotally supported by said pivot shaft of said pawl body; a pawl spring; and, said pawl spring operating between said inner body biasing said pawl body and said pawl engages said rack; and, wherein, said inner body being press fitted and fixed into said inner body fitting hole of said outer body.