JPH05229483A - Duct case for water injection sliding boat - Google Patents
Duct case for water injection sliding boatInfo
- Publication number
- JPH05229483A JPH05229483A JP4069768A JP6976892A JPH05229483A JP H05229483 A JPH05229483 A JP H05229483A JP 4069768 A JP4069768 A JP 4069768A JP 6976892 A JP6976892 A JP 6976892A JP H05229483 A JPH05229483 A JP H05229483A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- impeller
- cases
- integrally
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
- B63B34/10—Power-driven personal watercraft, e.g. water scooters; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
- B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H2011/008—Arrangements of two or more jet units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
- B63H23/06—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit
- B63H2023/062—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing for transmitting drive from a single propulsion power unit comprising means for simultaneously driving two or more main transmitting elements, e.g. drive shafts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、水噴射滑走艇のダク
トケースに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct case for a water jet planing boat.
【０００２】[0002]
【従来の技術】左右一対のインペラーで水を後方に噴射
して滑走する水噴射滑走艇がある。例えば、特開昭６１
−６７６９５号公報参照。この滑走艇では、エンジンの
ドライブ軸後端に、ギヤーケースに収容したドライブギ
ヤーを配置し、ドライブギヤーに左右のドリブンギヤー
を噛合せ、ギヤーケースの後側に左右のダクトケースを
連結するようにしている。2. Description of the Related Art There is a water jet planing boat in which water is jetted backward by a pair of left and right impellers. For example, JP-A-61
See -67695. In this planing boat, a drive gear housed in a gear case is placed at the rear end of the drive shaft of the engine, the driven gears are engaged with the drive gear, and the left and right duct cases are connected to the rear side of the gear case. ing.
【０００３】[0003]
【発明が解決しようとする課題】ギヤーケースの後端に
左右のダクトケースを連結するので、重量が重くなり、
ギヤーケースとダクトケースの連結精度を保つのに大変
である。Since the left and right duct cases are connected to the rear end of the gear case, the weight becomes heavy,
It is difficult to maintain the connection accuracy between the gear case and the duct case.
【０００４】かかる点に鑑み、この発明は、左右のダク
トケースを一体に鋳造すると共に、一対のダクトケース
の前側にギヤー室を一体に設けて、小型で重量軽減がで
きアライメント精度を向上できる小型の水噴射滑走艇の
ダクトケースを得ることを目的とする。In view of the above point, the present invention is compact in that the left and right duct cases are integrally cast, and the gear chambers are integrally provided on the front side of the pair of duct cases to reduce the weight and improve the alignment accuracy. The purpose is to obtain a duct case for a water jet planing boat.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、この発明の水噴射滑走艇のダクトケースは、左右一
対のダクトケースを一体に鋳造し、左右のウォーターダ
クトの中央に前後方向にインペラー軸室を設けてインペ
ラー軸を軸架し、左右一対のダクトケースの前側にギヤ
ー室を設け、中央に配置したドライブギヤーに左右のイ
ンペラー軸先端に連結したドリブンギヤーを噛合せ、ド
ライブギヤーにエンジンのドライブ軸を連結して駆動す
るようにしたことにある。In order to achieve the above object, the duct case of the water jet planing boat of the present invention is formed by integrally casting a pair of left and right duct cases in the front-rear direction at the center of the left and right water ducts. An impeller shaft chamber is provided to support the impeller shaft, and a gear chamber is provided in front of the pair of left and right duct cases.The drive gear in the center is meshed with the driven gear connected to the tips of the left and right impeller shafts to form the drive gear. The engine drive shaft is connected to drive.
【０００６】[0006]
【作用】左右一対のダクトケースは一体成形するので、
左右のウォーターダクトの内側の壁を共用でき、左右幅
を狭く、小型で軽量にできる。又、左右一対の一体成形
したダクトケースの前端にギヤー室を一体成形するの
で、精度を高く保つことができる。そして、インペラー
軸は、ダクトケースのインペラー軸室内に収容されてい
るので、錆の発生の心配がなく棒鋼で安価にできる。[Operation] Since the pair of left and right duct cases are integrally molded,
The inner walls of the left and right water ducts can be shared, and the left and right widths are narrow, making it compact and lightweight. Further, since the gear chamber is integrally formed at the front ends of the pair of left and right integrally formed duct cases, the accuracy can be kept high. Since the impeller shaft is housed in the impeller shaft chamber of the duct case, there is no fear of rusting, and the cost can be reduced by using steel bar.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１乃至図６によっ
て説明する。ダクトケース１は、左右一対のウォーター
ダクト２を下側から後側に設けてあって、一体鋳造で形
成する。左右のウォーターダクト２の中央には、前後方
向にインペラー軸室３を設けて、インペラー軸４を軸架
する。ダクトケース１の前端はギヤー室５を一体に設け
てギヤー室カバー６を連結するようにしてある。ギヤー
室５の中央には、ドライブギヤー７を配置し、左右のイ
ンペラー軸４の前端に連結したドリブンギヤー８をドラ
イブギヤー７に噛合せる。そして、エンジン９のドライ
ブ軸１０の後端に、ドライブギヤー７を連結し、エンジ
ン９で左右のインペラー軸４を駆動する。Embodiments of the present invention will be described below with reference to FIGS. The duct case 1 is provided with a pair of left and right water ducts 2 from the lower side to the rear side, and is formed by integral casting. An impeller shaft chamber 3 is provided in the front-rear direction at the center of the left and right water ducts 2, and an impeller shaft 4 is mounted on the impeller shaft 4. A gear chamber 5 is integrally provided at the front end of the duct case 1 to connect the gear chamber cover 6. A drive gear 7 is arranged in the center of the gear chamber 5, and a driven gear 8 connected to the front ends of the left and right impeller shafts 4 is meshed with the drive gear 7. Then, the drive gear 7 is connected to the rear end of the drive shaft 10 of the engine 9, and the engine 9 drives the left and right impeller shafts 4.
【０００８】左右のウォーターダクト２の後端には、イ
ンペラーハウジング１１を各々連結し、インペラーハウ
ジング１１の後側に各々ノズル１２を連結する。左右の
インペラーハウジング１１の内側には、インペラー軸４
の後端に連結したインペラー１３を収容し、インペラー
１３の回転によって、ノズル１２から後方に水を噴射し
て推力を得る。ノズル１２の後端には、ラダー１４の前
端を左右に回動自在に連結し、ラダー１４を左右に回動
させて操舵する。Impeller housings 11 are connected to the rear ends of the left and right water ducts 2, and nozzles 12 are connected to the rear sides of the impeller housings 11. Inside the left and right impeller housings 11, the impeller shaft 4
The impeller 13 connected to the rear end is housed, and by the rotation of the impeller 13, water is jetted backward from the nozzle 12 to obtain thrust. The front end of the ladder 14 is rotatably connected to the left and right of the rear end of the nozzle 12, and the rudder 14 is rotated to the left and right to steer.
【０００９】エンジン９でインペラー１３を回転させ、
左右のノズル１２から後方に水を噴射して推力を得て艇
を走行させる。ノズル１２の後側のラダー１４を回動さ
せて、操舵することができる。左右一対のウォーターダ
クト２を有するダクトケース１を左右一体に鋳造するの
で、ダクトケース１の左右幅を狭くできて、小型で軽量
にできる。又、ダクトケース１の前側にギヤー室５を一
体に形成するので、加工精度を高くできる。The impeller 13 is rotated by the engine 9,
Water is jetted rearward from the left and right nozzles 12 to obtain thrust to run the boat. The rudder 14 on the rear side of the nozzle 12 can be rotated and steered. Since the duct case 1 having the pair of left and right water ducts 2 is integrally cast on the left and right sides, the width of the duct case 1 can be narrowed, and the size and weight can be reduced. Further, since the gear chamber 5 is integrally formed on the front side of the duct case 1, the processing accuracy can be increased.
【００１０】[0010]
【発明の効果】以上説明したように、この発明は、上述
のように構成したので、ダクトケース１を左右一体に形
成してウォーターダクト２の内側の壁を共用することに
よって、ダクトケース１の左右幅を狭くでき、小型で軽
量化することができる。そして、ダクトケース１の前側
にギヤー室５を一体に形成するので、加工精度組付け精
度を高いものにできる。又、インペラー軸４はインペラ
ー軸室３内に収容されているので錆の発生の心配がなく
棒鋼で安価にできる。As described above, since the present invention is configured as described above, the duct case 1 is integrally formed on the left and right sides so that the inner wall of the water duct 2 is shared, so that the duct case 1 can be formed. The left and right width can be narrowed, and the size and weight can be reduced. Further, since the gear chamber 5 is integrally formed on the front side of the duct case 1, the processing accuracy and the assembling accuracy can be made high. Further, since the impeller shaft 4 is housed in the impeller shaft chamber 3, there is no fear of rusting and the bar steel can be manufactured at low cost.
【図１】本発明の実施例を示すインペラー軸部分で縦断
した側面図である。FIG. 1 is a side view of an embodiment of the present invention taken along a vertical line at an impeller shaft portion.
【図２】本発明の実施例を示すギヤー室を破断した平面
図である。FIG. 2 is a plan view in which a gear chamber according to an embodiment of the present invention is cut away.
【図３】本発明の実施例を示すギヤー室部分の横断面図
である。FIG. 3 is a cross-sectional view of a gear chamber portion showing an embodiment of the present invention.
【図４】本発明の実施例を示す図１のＡ−Ａ矢視横断面
図である。FIG. 4 is a transverse sectional view taken along the line AA of FIG. 1 showing an embodiment of the present invention.
【図５】本発明の実施例を示す全体平面図である。FIG. 5 is an overall plan view showing an embodiment of the present invention.
【図６】本発明の実施例を示す全体側面図である。FIG. 6 is an overall side view showing an embodiment of the present invention.
１ ダクトケース ３ インペラー軸室 ４ インペラー軸 ５ ギヤー室 ７ ドライブギヤー ８ ドリブンギヤー ９ エンジン １０ ドライブ軸 1 Duct Case 3 Impeller Shaft Chamber 4 Impeller Shaft 5 Gear Chamber 7 Drive Gear 8 Driven Gear 9 Engine 10 Drive Shaft
Claims (1)
し、左右のウォーターダクトの中央に前後方向にインペ
ラー軸室を設けてインペラー軸を軸架し、左右一対のダ
クトケースの前側にギヤー室を設け、中央に配置したド
ライブギヤーに左右のインペラー軸先端に連結したドリ
ブンギヤーを噛合せ、ドライブギヤーにエンジンのドラ
イブ軸を連結して駆動するようにしたことを特徴とする
水噴射滑走艇のダクトケース。1. A pair of left and right duct cases are integrally cast, an impeller shaft chamber is provided in the front-rear direction in the center of the left and right water ducts, and the impeller shaft is mounted on the front side of the pair of left and right duct cases. A duct for a water jet planing boat, characterized in that a drive gear arranged in the center is engaged with a driven gear connected to the tips of the left and right impeller shafts, and the drive shaft of the engine is connected to the drive gear for driving. Case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069768A JPH05229483A (en) | 1992-02-19 | 1992-02-19 | Duct case for water injection sliding boat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4069768A JPH05229483A (en) | 1992-02-19 | 1992-02-19 | Duct case for water injection sliding boat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05229483A true JPH05229483A (en) | 1993-09-07 |
Family
ID=13412311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4069768A Pending JPH05229483A (en) | 1992-02-19 | 1992-02-19 | Duct case for water injection sliding boat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05229483A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967864A (en) * | 1995-11-07 | 1999-10-19 | Yahama Hatsudoki Kabushiki Kaisha | Twin jet propulsion units |
| CN104141737A (en) * | 2013-05-09 | 2014-11-12 | 南通中国科学院海洋研究所海洋科学与技术研究发展中心 | Underwater speed reduction drive mechanism |
| EP2729358A4 (en) * | 2011-07-08 | 2015-12-16 | Twin Disc Inc | Waterjet propulsion system and method for a marine vehicle |
-
1992
- 1992-02-19 JP JP4069768A patent/JPH05229483A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967864A (en) * | 1995-11-07 | 1999-10-19 | Yahama Hatsudoki Kabushiki Kaisha | Twin jet propulsion units |
| EP2729358A4 (en) * | 2011-07-08 | 2015-12-16 | Twin Disc Inc | Waterjet propulsion system and method for a marine vehicle |
| CN104141737A (en) * | 2013-05-09 | 2014-11-12 | 南通中国科学院海洋研究所海洋科学与技术研究发展中心 | Underwater speed reduction drive mechanism |
| CN104141737B (en) * | 2013-05-09 | 2016-06-08 | 南通中国科学院海洋研究所海洋科学与技术研究发展中心 | One is speed reduction driving mechanism for power under water |
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