IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0454233
(2012-04-24)
|
등록번호 |
US-8579668
(2013-11-12)
|
우선권정보 |
JP-2011-101756 (2011-04-28); JP-2012-050906 (2012-03-07) |
발명자
/ 주소 |
- Minoura, Minoru
- Nakashima, Yuki
- Yamada, Kenichi
- Oota, Nobuharu
- Kojima, Shimpei
|
출원인 / 주소 |
- Yamaha Hatsudoki Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
7 |
초록
▼
A vessel propulsion apparatus includes a nozzle, a deflector, and a forward bucket (hereinafter referred to as “F bucket”). In a state in which the F bucket is in a closed position and the deflector is positioned at a left side, water jetted obliquely rearward to the left from the deflector is guide
A vessel propulsion apparatus includes a nozzle, a deflector, and a forward bucket (hereinafter referred to as “F bucket”). In a state in which the F bucket is in a closed position and the deflector is positioned at a left side, water jetted obliquely rearward to the left from the deflector is guided by the F bucket in a left guiding direction that is tilted further to the left than a direction of jetting of water from the deflector. In a state in which the F bucket is in the closed position and the deflector is positioned at a right side, water jetted obliquely rearward to the right from the deflector is guided by the F bucket in a right guiding direction that is tilted further to the right than the direction of jetting of water from the deflector.
대표청구항
▼
1. A vessel propulsion apparatus comprising: a nozzle that jets water rearward;a deflector rotatable to the right and to the left around a substantially vertical axis D and between a right maximum steering position and a left maximum steering position, the deflector including an outlet which jets wa
1. A vessel propulsion apparatus comprising: a nozzle that jets water rearward;a deflector rotatable to the right and to the left around a substantially vertical axis D and between a right maximum steering position and a left maximum steering position, the deflector including an outlet which jets water jetted rearward from the nozzle in a rearward direction or an obliquely rearward direction tilted to the right or to the left with respect to the rearward direction; anda forward bucket rotatable up and down around a substantially horizontal axis F and between a closed position covering at least a portion of the outlet in a rear view of the vessel propulsion apparatus and an opened position not covering the outlet, the forward bucket guiding water jetted obliquely rearward to the right from the outlet in a right guiding direction extending in a right direction or an obliquely rearward right direction that is tilted further to the right than a direction of jetting of water from the outlet in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at a right side relative to a straight drive position between the right maximum steering position and the left maximum steering position, the forward bucket guiding water jetted obliquely rearward to the left from the outlet in a left guiding direction extending in a left direction or an obliquely rearward left direction that is tilted further to the left than the direction of jetting of water from the outlet in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at a left side relative to the straight drive position. 2. The vessel propulsion apparatus according to claim 1, wherein the substantially horizontal axis F is an axis that is fixed with respect to the nozzle. 3. The vessel propulsion apparatus according to claim 1, wherein the forward bucket generates a right branch stream flowing in the right guiding direction and a left branch stream flowing in the left guiding direction by dividing water jetted rearward from the outlet to the right and to the left at equal flow rates in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at the straight drive position; the forward bucket generates the right branch stream to have a greater flow rate than the left branch stream in the state in which the forward bucket is positioned at the closed position and the deflector is positioned at the right side relative to the straight drive position; andthe forward bucket generates the left branch stream to have a greater flow rate than the right branch stream in the state in which the forward bucket is positioned at the closed position and the deflector is positioned at the left side relative to the straight drive position. 4. The vessel propulsion apparatus according to claim 1, wherein the forward bucket includes an apex portion disposed on a central axis of the deflector positioned at the straight drive position, a right guide extending obliquely rearward to the right from the apex portion, and a left guide extending obliquely rearward to the left from the apex portion. 5. The vessel propulsion apparatus according to claim 1, further comprising a reverse bucket rotatable up and down around a substantially horizontal axis R independently of the forward bucket, the reverse bucket guiding water flowing into the deflector from the nozzle forward. 6. The vessel propulsion apparatus according to claim 5, wherein the reverse bucket is disposed in front of the forward bucket and is rotatable up and down around the substantially horizontal axis R that is fixed with respect to the deflector. 7. The vessel propulsion apparatus according to claim 1, further comprising a reverse bucket disposed above the forward bucket, the reverse bucket being rotatable up and down around the substantially horizontal axis F together with the forward bucket, the reverse bucket guiding water flowing into the deflector from the nozzle forward. 8. The vessel propulsion apparatus according to claim 1, wherein the forward bucket includes a right guide that guides water jetted rearward from a right end portion of the outlet in the left guiding direction in a state in which the forward bucket is positioned at the closed position, and a left guide that guides water jetted rearward from a left end portion of the outlet in the right guiding direction in a state in which the forward bucket is positioned at the closed position. 9. The vessel propulsion apparatus according to claim 8, further comprising a reverse bucket that is rotatable up and down around the substantially horizontal axis F together with the right guide and the left guide, the reverse bucket guiding water flowing into the deflector from the nozzle forward. 10. A vessel propulsion apparatus comprising: a jet pump including a nozzle that jets water rearward and a deflector rotatable to the right and to the left around a substantially vertical axis D and between a right maximum steering position and a left maximum steering position, the deflector including an outlet that jets water jetted rearward from the nozzle rearward;a power source that drives the jet pump;a forward bucket rotatable up and down around a substantially horizontal axis F and between a closed position covering at least a portion of the outlet in a rear view of the vessel propulsion apparatus and an opened position not covering the outlet, the forward bucket guiding water flowing into the deflector from the nozzle; anda reverse bucket rotatable up and down, independently of the forward bucket, around a substantially horizontal axis R and between a closed position covering at least a portion of the outlet in a rear view of the vessel propulsion apparatus and an opened position not covering the outlet, the reverse bucket guiding water flowing into the deflector from the nozzle such that a thrust in a reverse drive direction is generated. 11. The vessel propulsion apparatus according to claim 10, wherein the reverse bucket is disposed in front of the forward bucket; the substantially horizontal axis F is an axis that is fixed with respect to the nozzle; andthe substantially horizontal axis R is an axis that is fixed with respect to the deflector. 12. The vessel propulsion apparatus according to claim 10, wherein the forward bucket guides water jetted obliquely rearward to the right from the outlet in a right guiding direction extending in a right direction or an obliquely rearward right direction that is tilted further to the right than a direction of jetting of water from the outlet in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at a right side relative to a straight drive position between the right maximum steering position and the left maximum steering position, and the forward bucket guides water jetted obliquely rearward to the left from the outlet in a left guiding direction extending in a left direction or an obliquely rearward left direction that is tilted further to the left than a direction of jetting of water from the outlet in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at a left side relative to the straight drive position. 13. The vessel propulsion apparatus according to claim 12, wherein the forward bucket generates a right branch stream flowing in the right guiding direction and a left branch stream flowing in the left guiding direction by dividing water jetted rearward from the outlet to the right and to the left at equal flow rates in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at the straight drive position; the forward bucket generates the right branch stream to have a greater flow rate than the left branch stream in the state in which the forward bucket is positioned at the closed position and the deflector is positioned at the right side relative to the straight drive position; andthe forward bucket generates the left branch stream to have a greater flow rate than the right branch stream in a state in which the forward bucket is positioned at the closed position and the deflector is positioned at the left side relative to the straight drive position. 14. The vessel propulsion apparatus according to claim 10, further comprising an actuator that rotates the forward bucket up or down around the substantially horizontal axis F; and a controller that is arranged and programmed to control the actuator based on a parameter related to operation of the power source. 15. The vessel propulsion apparatus according to claim 14, further comprising an operation member operated by a vessel operator to adjust an output of the power source; wherein the parameter includes a position of the operation member; andthe controller controls the actuator based on the position of the operation member. 16. The vessel propulsion apparatus according to claim 14, wherein the power source includes an internal combustion engine including a throttle valve that changes a supply flow rate of intake air; the parameter includes an opening degree of the throttle valve; andthe controller controls the actuator based on the opening degree of the throttle valve. 17. The vessel propulsion apparatus according to claim 14, wherein the parameter includes a rotation speed of the power source, and the controller controls the actuator based on the rotation speed of the power source. 18. The vessel propulsion apparatus according to claim 10, wherein the forward bucket is arranged to rotate to an opened position by receiving water jetted rearward from the outlet. 19. The vessel propulsion apparatus according to claim 18, further comprising an urging member that generates a restorative force that corresponds to a movement amount of the forward bucket from the closed position and returns the forward bucket to the closed position. 20. The vessel propulsion apparatus according to claim 10, further comprising an operation member that is movable among a first position, a second position, and a third position and operated by a vessel operator; and a bucket moving device that moves at least one of the forward bucket and the reverse bucket based on a position of the operation member such that the reverse bucket moves from the closed position to the opened position when the operation member moves from the first position to the second position and the forward bucket moves from the closed position to the opened position when the operation member moves from the second position to the third position. 21. The vessel propulsion apparatus according to claim 20, further comprising a controller that is arranged and programmed to keep an output of the power source fixed regardless of an operation of the operation member in a state in which the operation member is positioned between the first position and the second position, and to increase the output of the power source in accordance with a movement amount of the operation member from the second position in a state in which the operation member is positioned between the second position and the third position. 22. A vessel propulsion apparatus comprising: a pair of nozzles respectively disposed at a right side and a left side of a width direction center of a hull and that jet water rearward;a pair of deflectors respectively coupled to the pair of nozzles, being rotatable to the right and to the left around substantially vertical axes D and between right maximum steering positions and left maximum steering positions, the pair of deflectors including outlets that jet water jetted rearward from the nozzles in rearward directions or in obliquely rearward directions that are tilted to the right or to the left with respect to the rearward directions; anda pair of forward buckets respectively disposed at right and left sides of the width direction center of the hull, being rotatable up and down around substantially horizontal axes F and between closed positions covering at least a portion of the outlets in a rear view of the vessel propulsion apparatus and opened positions not covering the outlets, generating thrusts in forward drive directions by guiding water flowing into the respective deflectors from the nozzles, being arranged such that in a state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at right sides relative to straight drive positions between the right maximum steering positions and the left maximum steering positions, the forward bucket at the right side guides water jetted obliquely rearward to the right from the outlet at the right side in a right guiding direction extending in a right direction or an obliquely rearward right direction that is tilted further to the right than a direction of jetting of water from the outlet, and the forward bucket at the left side guides water jetted obliquely rearward to the right from the outlet at the left side in a direction between a direction of jetting of water from the outlet at the straight drive position and the right direction, and being arranged such that in a state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at left sides relative to the straight drive positions, the forward bucket at the left side guides water jetted obliquely rearward to the left from the outlet at the left side in a left guiding direction extending in a left direction or an obliquely rearward left direction that is tilted further to the left than a direction of jetting of water from the outlet, the forward bucket at the right side guides water jetted obliquely rearward to the left from the outlet at the right side in a direction between a direction of jetting of water from the outlet at the straight drive position and the left direction. 23. The vessel propulsion apparatus according to claim 22, wherein the forward bucket at the right side is rotatable up and down around the substantially horizontal axis F that is fixed with respect to the nozzle at the right side, and the forward bucket at the left side is rotatable up and down around the substantially horizontal axis F that is fixed with respect to the nozzle at the left side. 24. The vessel propulsion apparatus according to claim 22, wherein the forward bucket at the right side generates a right branch stream flowing in the right guiding direction by guiding at least a portion of the water jetted rearward from the outlet at the right side in the state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at the right sides relative to the straight drive positions; the forward bucket at the left side generates a left branch stream flowing in the left guiding direction by guiding at least a portion of the water jetted rearward from the outlet at the left side in the state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at the left sides relative to the straight drive positions; andthe pair of forward buckets generates the right branch stream and the left branch stream that have an equal flow rate in a state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at the straight drive positions, the pair of forward buckets generates the right branch stream to have a greater flow rate than the left branch stream in the state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at the right sides relative to the straight drive positions, and the pair of forward buckets generates the left branch stream greater in flow rate than the right branch stream in the state in which the pair of forward buckets are positioned at the closed positions and the pair of deflectors are positioned at the left sides relative to the straight drive positions. 25. The vessel propulsion apparatus according to claim 22, further comprising a pair of reverse buckets respectively disposed at right and left sides of the width direction center of the hull and generating thrusts in reverse drive directions by guiding water flowing into the respective deflectors from the nozzles; wherein the forward bucket and the reverse bucket that are disposed at the same side with respect to the width direction center of the hull are aligned in an up/down direction such that the forward bucket is positioned below the reverse bucket and are integrally rotatable around the substantially horizontal axis F. 26. The vessel propulsion apparatus according to claim 22, wherein each of the pair of forward buckets has a shape that is right/left asymmetrical and the pair of forward buckets are disposed symmetrically with respect to the width direction center of the hull. 27. The vessel propulsion apparatus according to claim 26, wherein an entirety of the pair of forward buckets has a shape that is right-left symmetrical.
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