Ratchet-type tensioner
A tensioner, ratchet-type technology, applied in the direction of machine/engine, belt/chain/gear, valve details, etc., can solve problems such as inability to ensure oil pressure, inability to eliminate timing chain, unstable backward movement of piston 542, etc. achieve the effect of suppressing noise
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[0071] As long as the ratchet tensioner of the present invention has the following structure, its specific method can be any structure: a ratchet tensioner, comprising: a housing main body, which forms a first oil supply path for introducing external pressure oil; A plunger protrudes from the plunger receiving hole of the housing body to the moving chain slidably; In the high-pressure oil chamber between the parts, force is applied to the protruding direction of the plunger; the check valve unit, which is installed at the bottom of the plunger receiving hole, prevents the pressure oil from flowing backward from the high-pressure oil chamber to the first oil supply path a ratchet, which is pivotally supported at the front portion of the casing body in a freely swingable manner, meshes with rack teeth formed on the plunger side of the plunger, and allows the forward displacement of the plunger while preventing backward displacement; and a spring for applying force to the ratchet ...
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