Boat propulsion device and boat
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorTakafumi TANIGUCHI
Life of this patent
Estimating the term…
Abstract
A boat propulsion device includes an engine, a propeller shaft, a transmission, a cover, a shoe pin, a shoe, and an elastic member. The transmission includes a drive gear and a driven gear meshing with the drive gear. The cover is configured to cover the propeller shaft. The shoe pin is between the propeller shaft and the cover and is rotatable around the propeller shaft. The shoe is attached to the shoe pin and is rotatable around the shoe pin. The shoe includes a first portion on a first side and a second portion on a second side of a direction intersecting the radial direction of the propeller shaft with respect to the shoe pin. The center of gravity of the shoe is in the first portion. The elastic member is configured to exert a force to cause the second portion and the cover to contact each other.
Claims20
A boat propulsion device comprising:
- an engine;
- a propeller shaft;
- a transmission to transmit a propulsion force of the engine to the propeller shaft and including:
- a drive gear to rotate by the propulsion force of the engine;
- and
- a driven gear to mesh with the drive gear;
- a cover configured to cover an outer circumference of the propeller shaft;
- a shoe pin between the propeller shaft and the cover to rotate around the propeller shaft along with the rotation of the propeller shaft;
- a shoe attached to the shoe pin to rotate around the shoe pin and including:
- a first portion located on a first side of a direction that intersects a radial direction of the propeller shaft with respect to the shoe pin;
- and
- a second portion located on a second side of the direction that intersects the radial direction of the propeller shaft with respect to the shoe pin;
- wherein
- a center of gravity of the shoe is located in the first portion;
- and
- an elastic member is configured to exert a force to cause the second portion and the cover to come into contact with each other.
A boat propulsion device comprising:
- an engine;
- a shaft;
- a transmission to transmit a propulsion force of the engine to the shaft and including:
- a drive gear to rotate by the propulsion force of the engine;
- and
- a driven gear to mesh with the drive gear;
- a cover configured to cover an outer circumference of the shaft;
- a shoe pin between the shaft and the cover to rotate around the shaft along with rotation of the shaft;
- a shoe attached to the shoe pin to rotate around the shoe pin and including:
- a first portion located on a first side of a direction that intersects a radial direction of the shaft with respect to the pin shoe;
- and
- a second portion located on a second of the direction that intersects the radial direction of the shaft with respect to the pin shoe;
- wherein
- a center of gravity of the shoe is located in the first portion;
- and
- an elastic member is configured to exert a force to cause the second portion and the cover to come into contact with each other.
Dependencies are inferred from the claim text.