Valve drive apparatus and supercharger having the same
AssigneeDenso Corporation
InventorEtsugo YANAGIDA
Life of this patent
Estimating the term…
Abstract
In a valve drive apparatus, which drives a first valve and a second valve of a supercharger, a first rod is rotatably connected to a first valve lever shaft at one end part thereof to drive the first valve and is connected to a shaft at the other end part thereof, and a second rod is rotatably connected to a second valve lever shaft at one end part thereof to drive the second valve and is connected to a second member at the other end part thereof. A spring is placed between a first engaging part of the first member and a second engaging part of the second member and urges the first member and the second member to urge a first contact part of the first member and a second contact part of the second member toward each other.
Claims19
A valve drive apparatus installed to a supercharger that includes a first valve, which is rotatable about an axis of a first valve shaft, and a second valve, which is rotatable about an axis of a second valve shaft, the valve drive apparatus being configured to drive the first valve and the second valve, the valve drive apparatus comprising:
- an actuator that includes an output shaft, which is rotatable about an axis of the output shaft;
- a first drive lever that includes a first drive lever shaft, which is rotatable integrally with the output shaft, wherein an axis of the first drive lever shaft is parallel to the axis of the output shaft and is placed at a location that is spaced from the axis of the output shaft by a first predetermined distance;
- a second drive lever that includes a second drive lever shaft, which is rotatable relative to the output shaft, wherein an axis of the second drive lever shaft is parallel to the axis of the output shaft and is placed at a location, which is spaced from the axis of the output shaft by a second predetermined distance;
- a first valve lever that includes a first valve lever shaft, which is rotatable integrally with the first valve shaft, wherein an axis of the first valve lever shaft is parallel to the axis of the first valve shaft and is placed at a location, which is spaced from the axis of the first valve shaft by a third predetermined distance;
- a second valve lever that includes a second valve lever shaft, which is rotatable integrally with the second valve shaft, wherein an axis of the second valve lever shaft is parallel to the axis of the second valve shaft and is placed at a location, which is spaced from the axis of the second valve shaft by a fourth predetermined distance;
- a first rod that is rotatably connected to the first drive lever shaft at one end part of the first rod and is rotatably connected to the first valve lever shaft at another end part of the first rod, which is opposite from the one end part of the first rod;
- a second rod that is rotatably connected to the second drive lever shaft at one end part of the second rod and is rotatably connected to the second valve lever shaft at another end part of the second rod, which is opposite from the one end part of the second rod;
- a first predetermined shape portion that is formed at a corresponding location of the first drive lever, which is spaced from the axis of the output shaft by a predetermined distance;
- a second predetermined shape portion that is formed in the second drive lever and is contactable with the first predetermined shape portion;
- and
- an urging device that is placed between the first drive lever and the second drive lever and urges the first drive lever and the second drive lever to move the first predetermined shape portion and the second predetermined shape portion toward each other.
Dependencies are inferred from the claim text.