JPH11286297A - Cover device for jet water suction port in water-jet outboard motor - Google Patents
Cover device for jet water suction port in water-jet outboard motorInfo
- Publication number
- JPH11286297A JPH11286297A JP10087833A JP8783398A JPH11286297A JP H11286297 A JPH11286297 A JP H11286297A JP 10087833 A JP10087833 A JP 10087833A JP 8783398 A JP8783398 A JP 8783398A JP H11286297 A JPH11286297 A JP H11286297A
- Authority
- JP
- Japan
- Prior art keywords
- water
- jet
- outboard motor
- suction port
- front edge
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000001141 propulsive effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
- F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines
Landscapes
- Exhaust Silencers (AREA)
- Revetment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ウォータージェ
ット船外機における航走時の防波装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breakwater device for a water jet outboard motor when traveling.
【０００２】[0002]
【従来の技術】ウォータージェット推進機を船体に着脱
して使用するいわゆるウォータージェット船外機はよく
知られている。船外機は通常船尾に設けたサドルに左右
に回動して舵取りができるようにするとともに、上下に
も回動（上げ下げ）ができるようにしてある。2. Description of the Related Art A so-called water jet outboard motor in which a water jet propulsion device is attached to and detached from a hull is well known. The outboard motor is normally turned left and right on a saddle provided at the stern so that it can be steered, and also can be turned vertically (up and down).
【０００３】[0003]
【発明が解決しようとする課題】このため、この船外機
のユニットと船尾との間には一定の空間が必要であり、
航走時にはこの空隙中に波浪が侵入して船外機のケーシ
ング等に当たり、抵抗となっている。特に、ウォーター
ジェット船外機の場合には、ジェット水の吸込口の前部
で吸込水流に乱流を生ずるので大きな障害となってい
る。For this reason, a certain space is required between the outboard motor unit and the stern.
At the time of sailing, waves enter into this space and hit the casing of the outboard motor, which is a resistance. In particular, in the case of a water jet outboard motor, turbulence is generated in the suction water flow at the front of the suction port of the jet water, which is a major obstacle.
【０００４】[0004]
【課題を解決するための手段】この発明は、船外機を取
り付けたときに上述の船尾との間の空隙に波浪が侵入す
るのを防止したものであり、その要旨とするところは、
ウォータージェット装置を船尾に着脱するようにしたウ
ォータージェット推進船において、ジェット水の吸込口
の前縁部に上記船尾面と船外機のケーシングとの間のク
リアランスの下部を閉塞することができる防波板を設
け、その防波板に立設した支持ピンをケーシングの吸水
口の前縁部分に遊嵌するとともに、この支持ピンのセン
ターを船外機のステアリング中心軸に合致させたもので
ある。SUMMARY OF THE INVENTION The present invention is to prevent waves from entering the gap between the outboard motor and the stern when the outboard motor is attached.
In a water jet propulsion ship in which a water jet device is attached to and detached from a stern, a lower end of a clearance between the stern surface and a casing of an outboard motor can be closed at a front edge of a jet water suction port. A corrugated plate is provided, and a support pin erected on the wavebreak plate is loosely fitted to a front edge portion of a water suction port of a casing, and a center of the support pin is aligned with a steering center axis of the outboard motor. .
【０００５】[0005]
【発明の実施の形態】このようにすることによって、船
外機の吸込ケーシングの前側部と船尾面との間の空間の
下底部分が防波板によって閉止されたわけであり、船体
の進行による船底の水流が上記空間に流入してケーシン
グに当たって抵抗を生じたり、渦が発生するのを防止す
ることができる。そして、操船する上では、支持ピンが
ステアリング軸の中心軸線上に設けてあるので、ステア
リング軸を中心にウォータージェットの噴射ノズルを左
右に回動するには支障はないものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS By doing so, the lower bottom portion of the space between the front side of the suction casing of the outboard motor and the stern surface is closed by the wave preventing plate, and It is possible to prevent the water flow at the bottom of the ship from flowing into the space and hitting the casing to generate resistance or to generate vortices. In operating the boat, since the support pins are provided on the center axis of the steering shaft, there is no problem in rotating the jet nozzle of the water jet right and left around the steering shaft.
【０００６】すなわち、防波板の前縁面は、船外機を左
右に回動して操船しても船尾面に密着して前述クリアラ
ンスの下部を密閉して波浪の侵入を防止することができ
るものである。尚、防波板の前面にゴム材で構成した緩
衝部材を装着しておくと防波堤板が安定するとともに、
一層シール性がよくなり効果的である。以下、図面に基
づいてこの発明を具体的に説明する。In other words, the front edge surface of the wave preventing plate is in close contact with the stern surface even when the outboard motor is turned left and right to steer the boat, thereby sealing the lower portion of the clearance to prevent the invasion of waves. You can do it. In addition, if a buffer member made of rubber material is attached to the front surface of the breakwater plate, the breakwater plate will be stable and
The sealing property is further improved, which is effective. Hereinafter, the present invention will be specifically described with reference to the drawings.
【０００７】[0007]
【実施例】図において、符号１はウォータージェットの
推進船の船体、２はその後尾に装着したウォータージェ
ットの船外機、３はその装着サドル、４はステアリング
用のハンドル、Ｙは船外機の左右への回動軸芯線を示す
ものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a hull of a water jet propulsion boat, 2 denotes a water jet outboard motor mounted on its tail, 3 denotes a mounting saddle thereof, 4 denotes a steering handle, and Y denotes an outboard motor. 3 shows the center axis of the rotation shaft to the left and right.
【０００８】次に、図２に基づいて船外機２の具体的構
造について説明する。符号５は船外機の駆動機、６は駆
動機５の下部に連接し、吸引ポンプ（図示せず）等を内
装している吸込ケーシング、７はジェット水の吸込口、
８は吸込口７に設けたスクリーン、９はジェット水の噴
射口、１０はリバーサー、１１は後退時の噴射口であ
る。Next, a specific structure of the outboard motor 2 will be described with reference to FIG. Reference numeral 5 denotes a drive unit of the outboard motor, 6 denotes a suction casing which is connected to a lower portion of the drive unit 5 and houses a suction pump (not shown) and the like, 7 denotes a jet water suction port,
Reference numeral 8 denotes a screen provided at the suction port 7, 9 denotes a jet water jet, 10 denotes a reverser, and 11 denotes a retreat jet.
【０００９】上記ジェット水の吸込口７の前縁（船体の
進行方向を基準にして）には、吸込ケーシング６から連
結板６ａが前方に廷出され、この連結板６ａに設けたば
か孔６ｂには、防波板１２に立設した支持ピン１２ａが
遊嵌されている。この防波板１２は吸込ケーシング６の
前側と船尾面（トランサム）との間の空隙の下部を閉止
できる大きさに構成してあり、その前縁部分にはゴム材
で構成した緩衝部材１２ｂが装着してあり、この緩衝部
材１２ｂは船外機２をサドルに装着してその吸込口７を
水面下に位置させたときトランサムに密着するようにし
てある。また、前述の支持ピン１２ａは船体１のステア
リング軸の中心線Ｙ上に位置させて設けてある。At the front edge of the jet water inlet 7 (based on the direction of travel of the hull), a connecting plate 6a is protruded forward from the suction casing 6, and is inserted into a fool hole 6b provided in the connecting plate 6a. The support pins 12a erected on the wave preventing plate 12 are loosely fitted. The wavebreak plate 12 is configured to be able to close the lower part of the gap between the front side of the suction casing 6 and the stern surface (transom), and a cushioning member 12b made of a rubber material is provided at a front edge portion thereof. The buffer member 12b is attached to the transom when the outboard motor 2 is mounted on a saddle and the suction port 7 is positioned below the water surface. Further, the above-described support pin 12a is provided so as to be located on the center line Y of the steering shaft of the hull 1.
【００１０】この発明に係る装置は、上述のように構成
してあり駆動機５でポンプを駆動して吸込口７から吸込
んだ水をジェット水として噴射ノズル９から噴射して航
走する。このとき、吸込口７からは船底を流れた水が吸
込まれるが、この発明では、船体１と船外機５との間の
空隙の底部が防波板１２によって閉止されているので、
船底の水流が空隙に流れ込むことなく円滑に流れてポン
プに吸引される。[0010] The apparatus according to the present invention is constructed as described above, and drives the pump by the drive unit 5 to inject water sucked from the suction port 7 as jet water from the injection nozzle 9 to sail. At this time, the water flowing on the bottom of the hull is sucked from the suction port 7, but in the present invention, since the bottom of the gap between the hull 1 and the outboard motor 5 is closed by the wave preventing plate 12,
The water flow at the bottom of the ship flows smoothly without flowing into the gap and is sucked by the pump.
【００１１】すなわち、従来の船外機のように水流が船
外機のケーシングの前側部に当たって航走抵抗になった
り、空隙部に流入して乱流を生じたりすることなく効率
のよい航走をすることができる。なお、上記の防波板１
２は、船外機２をサドル３に取り付け、吸込口７を水中
に浸漬させるのみでその前縁部がトランサムに接するも
のであり、このとき、図例のように緩衝部材１２ｂを取
り付けておくと、シール性も向上し一層効果的である。That is, unlike the conventional outboard motor, the water flow hits the front side of the casing of the outboard motor and causes a running resistance, and the water does not flow into the gap to generate a turbulent flow, so that efficient running is possible. Can be. In addition, the above-mentioned wavebreak board 1
Reference numeral 2 denotes an outboard motor 2 attached to the saddle 3, and the suction port 7 is merely immersed in water, and its front edge is in contact with the transom. At this time, a buffer member 12b is attached as shown in the figure. In this case, the sealing property is also improved, which is more effective.
【００１２】[0012]
【発明の効果】このように、この発明に係る装置は、簡
単な構造でありながらウォータージェット推進船におい
て、従来生じていた波浪抵抗および船尾部に生ずる渦等
の乱流の発生を防止することができ、効率のよい航走を
なすことができるものである。As described above, the apparatus according to the present invention has a simple structure and prevents the generation of turbulent flow such as wave resistance and vortices generated at the stern portion in a water jet propulsion ship. This allows the ship to sail efficiently.
【図１】この発明を施したウォータージェット推進船の
概略の側面図である。FIG. 1 is a schematic side view of a water jet propulsion ship embodying the present invention.
【図２】同じく、その船外機の側面図である。FIG. 2 is a side view of the outboard motor.
２ 船外機 ６ 吸込ケーシング ７ 吸込口 １２ 防波板 １２ａ 支持ピン 2 Outboard motor 6 Suction casing 7 Suction port 12 Wavebreak plate 12a Support pin
Claims (1)
るようにしたウォータージェット推進船において、ジェ
ット水の吸込口７の前縁部に、上記船尾面と船外機２の
ケーシングとの間のクリアランスの下部を閉塞すること
ができる防波板１２を設け、その防波板１２に立設した
支持ピン１２ａを吸込ケーシング６の吸水口の前縁部分
に遊嵌するとともに、この支持ピン１２ａのセンターを
船外機２のステアリング中心軸に合致させてなるウォー
タージェット船外機におけるジェット水の吸込口部分の
カバー装置。In a water jet propulsion boat in which a water jet device is attached to and detached from a stern, a clearance between a stern surface and a casing of an outboard motor 2 is provided at a front edge of a jet water suction port 7. A wave preventing plate 12 capable of closing the lower part is provided, and a support pin 12a erected on the wave preventing plate 12 is loosely fitted to a front edge portion of a water inlet of the suction casing 6, and a center of the support pin 12a is A cover device for a jet water suction port portion in a water jet outboard motor which is aligned with a steering center axis of the outboard motor 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08783398A JP3395885B2 (en) | 1998-04-01 | 1998-04-01 | Cover device for jet water suction port in water jet outboard motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08783398A JP3395885B2 (en) | 1998-04-01 | 1998-04-01 | Cover device for jet water suction port in water jet outboard motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11286297A true JPH11286297A (en) | 1999-10-19 |
| JP3395885B2 JP3395885B2 (en) | 2003-04-14 |
Family
ID=13925946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08783398A Expired - Fee Related JP3395885B2 (en) | 1998-04-01 | 1998-04-01 | Cover device for jet water suction port in water jet outboard motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3395885B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002066322A1 (en) | 2001-02-21 | 2002-08-29 | Ishigaki Company Limited | Water jet propulsion outboard engine |
| JP2018114857A (en) * | 2017-01-19 | 2018-07-26 | 浜口ウレタン株式会社 | Cleaning tool and cleaning method for propulsion device |
-
1998
- 1998-04-01 JP JP08783398A patent/JP3395885B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002066322A1 (en) | 2001-02-21 | 2002-08-29 | Ishigaki Company Limited | Water jet propulsion outboard engine |
| US6752671B2 (en) | 2001-02-21 | 2004-06-22 | Shigaki Company Limited | Water jet propulsion type outboard engine |
| JP2018114857A (en) * | 2017-01-19 | 2018-07-26 | 浜口ウレタン株式会社 | Cleaning tool and cleaning method for propulsion device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3395885B2 (en) | 2003-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |