JPH01148694A - Surfboard with propeller - Google Patents

Surfboard with propeller

Info

Publication number
JPH01148694A
JPH01148694A JP62305485A JP30548587A JPH01148694A JP H01148694 A JPH01148694 A JP H01148694A JP 62305485 A JP62305485 A JP 62305485A JP 30548587 A JP30548587 A JP 30548587A JP H01148694 A JPH01148694 A JP H01148694A
Authority
JP
Japan
Prior art keywords
surfboard
base plate
engine
unevenness
propulsion device
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
Application number
JP62305485A
Other languages
Japanese (ja)
Inventor
Hideto Yoshitake
秀人 吉武
Sosuke Kinouchi
木野内 総介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP62305485A priority Critical patent/JPH01148694A/en
Publication of JPH01148694A publication Critical patent/JPH01148694A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00Water sports boards; Accessories therefor
    • B63B32/10Motor-propelled water sports boards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H11/00Marine propulsion by water jets
    • B63H11/02Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/081Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE:To improve an assembling property while make unevenness inconspicuous by forming a base plate for supporting an engine and a propeller separately from a body and installing the base plate in a recessed portion on the bottom face side of a surfboard. CONSTITUTION:A large surfboard body 1 and a small base plate 4 are formed in separate bodies. Thereby, the base plate 4 can be assembled to the body 1 after assembling a propeller 8, a chamber 20, a lower housing 7, a fuel tank 9, an engine 10, and a cover 1, etc. thereto and forming the plate 4 in a unit condition. Hence, by enabling such assembling, the assembling property of the surfboard can be improved. Also, since a recessed portion 3 is formed on the body 1 to install the base plate 4, the propeller 8 and the engine 10, etc. are housed in the recessed portion 3 without forming a large unevenness on the surfboard. Further, as the recessed portion 3 is provided on the bottom face side of the body 1, the unevenness of the connected portion between the body 1 and the plate 4 and the unevenness caused by a bolt 13, etc. do not appear on the top face side of the surfboard, thereby, making unevenness inconspicuous without impairing the appearance.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野J この発明は、推進機とこれを駆動させるエンジンとを備
えた推進機付サーフボードに関するものである。 [従来の技術〕 従来より、推進機付サーフボードがある(例えば、米国
特許第4.274.357号明細書参照)。この種のサ
ーフボードは、推進機を有することにより、レジャー性
を向上させている。
[Industrial Field of Application J This invention relates to a surfboard with a propulsion device that includes a propulsion device and an engine that drives the propulsion device. [Prior Art] Conventionally, there are propulsion surfboards (see, for example, US Pat. No. 4,274,357). This type of surfboard has a propulsion device, which improves its leisure properties.

【発明が解決しようとする問題点〕[Problem that the invention attempts to solve]

ところが、比較的大きいものであるサーフボード本体に
、エンジンや推進機などの個々の部品を組付ける必要が
あるため1組η作業が面倒で、たとえばエンジンと推進
機との芯出しが容易でない。 この対策として、サーフボードを+iSi ’F一部と
後半部とに分割し、推進機およびエンジンを後半部に組
付けた後に、ユニット状態の後半部と1γ11へ部とを
接合することにより1組立性の向ヒを図ることも考えら
れる。ところが、こうすると、上記11;I半部と後’
li部との間などに凹凸が表われ、たとえば外観が損な
われる。 この発明は一ヒ記の点に鑑みてなされたもので。 組合−性が向卜し、かつ、サーフボードに表われる凹凸
が小さくなるとともに1」立たない推進機付サーフボー
ドを提供することを[1的としている。 【問題点を解決するための手段] J・記1.1的を達成するために、この発明は、まず、
浮力体を構成するサーフボード本体と、推進磯およびエ
イシンを支持するベースプレートとが別体に形成されて
いる、1−記サーフボード本体の底面側の後部に凹所が
設けられ、この凹所にベースプレートが取り付けられて
いる。 〔作用〕 この発明によれば、大きいものであるサーフボード本体
と、これよりも小さく形成し得るベースプレートとが別
体であるから、小さなベースプレートに推進機およびエ
ンジンを組付けた後に、ベースプレートをサーフボード
本体に組付けることができる。 また、サーフボード本体に凹所を形成して、この凹所に
ベースプレートを組付けるから、エンジンおよび推進機
が凹所に入り込む。したがって、サーフボードに表われ
る凹凸が小さくなる。 また、上記ベースプレートをサーフボード本体の底面に
設けられた凹所に取り付けるから、ベースプレートとサ
ーフボード本体との間などの凹凸がサーフボードの底面
側に表われ、上面側には表われない。したがって、凹凸
が目立たなくなる。 [実施例] 以F、この発明の一実施例を図面にしたがつ〜て説明す
る。 第1図において、1はサーフボード本体、2はコントロ
ールグリップである。」−記サーフボード本体lには、
その後部1aの底面側に、第2図に示すような凹所3が
設けられている。このサーフボード本体盲は、第3図の
ように1発泡樹脂Ibを外皮1cである繊維強化プラス
チックでおおってなり、浮力を与える浮力体を構成して
いる。 4はアルミ製のベースプレートで、l−記サーフボード
本体と別体に形成されており、その後部において、上方
のフィン5および水通路壁などを一体に形成するロアハ
ウジング7とフランジ接合されてウォータジェット推進
機8を)方に支持している。一方、L記ベースプレート
4は、その傾斜壁4bよりも前方の中央部において、上
方に燃料タンク9およびエンジン10を支持している。 また、l記ベースプレート4は、その前部において、帽
子型の断面に形成され、カバー11によりシールされた
状態で閉封されて、排気通路12を形成している。なお
、上記ロアハウジング7は金属で、上記カバー11は合
成樹脂で、それぞれ構成されている。 1−記ベースプレート4は、その周縁にフランジ4aが
、第4図の破線で示すように形成されており、第3図の
、上記凹所3に最り付けられている。 このフランジ4aと外皮ICとは、その間に、たとえば
粘液状のシール部材(図示せず)が介装され、ボルト1
3などの締結部材により締結されて、ベースプレート4
よりも上方の空間(エンジンルーム)Sが外部からシー
ルされている。 上記つオータジェット推進機8は、・連結軸璽3を介し
て、エンジン10に連結されて駆動され、吸水口14か
ら吸入した水を、噴射0璽5からサーフボードの後方B
に噴射して、サーフボードに推進力を与えるものである
。上記連結軸13はベースプレート4の傾斜壁4bを貫
通しており、この貫通部にメカニカルシール16が設け
られている。なお、17は軸受、18は連結部である。 19は吸気通路で、サーフボード本体l内をサーフボー
ド本体lの前部まで貫通しており、上記空間Sに吸気を
導く。なお、この吸気通路19内には、図示しないスロ
ットルワイヤ、スタータケーブルなどが挿入されており
、エンジンlOを第1図のコントロールグリップ2など
から操作可能にしている。 第4図において、上記排気通路12内にはエキスパンシ
ョンチャンバ20が配設されている。したがって、エン
ジンlOからの排気は、第5図のように、エンジンlO
の下部に設けられた排気孔21から、第4図のエキスパ
ンションチャンバ20、排気通路12および排気管22
を通って。 後方Bにたとえば水中排気される。 なお、図示していないが、点火プラグ23の点検孔や燃
料タンク9への給油口などは、ベースプレート4の下面
に設けられているとともに、取外し自在でシール性を有
するキャップにより閉封されている。 上記構成において、この発明は、大きなものであるサー
フボード本体lと、これよりも小さいベースプレート4
とが別体である。そのため、小さなベースプレート4に
つオータジェット推進機8、エキスパンションチャンバ
20、第3図のロアハウジング7、燃料タンク9、エン
ジン10およびカバー11などを組付けてユニットの状
態にした後に、ベースプレート4をサーフボード本体l
に組付けることができる。したがって、たとえばサブア
ッセンブリが可能になるなど、サーフボードの組立性が
向上する。 また、サーフボード本体lに凹所3を形成して、この凹
所3にベースプレート4を組付けるから、推進機8やエ
ンジンlOなどが上記凹所3に入り込む。したがって、
サーフボードに大きな凹凸が生じない。しかも、上記凹
所3がサーフボード本体1の底面側に設けられているか
ら、たとえばサーフボード本体lとベースプレート4と
の接続部の凹凸や、ボルト13などによる凹凸がサーフ
ボードの上面側に表われない。したがって、凹凸が目立
たないため、たとえば外観が損なわれない。 ところで、エンジン10はその運転とともに高温になる
。ここで、この発明は、水面下に位置するサーフボード
下部にエンジンIOが配設されており、したがって、エ
ンジン10の冷却が促される。 また、この実施例では、ベースプレート4がエンジン1
0を支持しているところから後方へ行くに従い上方へ曲
成された、傾斜壁4bを有し、推進機8を下方に支持し
ている。そのため、推進機8とエンジンルームである空
間Sとの間を傾斜壁4bにより区画できるから、推進機
8とエンジン10との間のシールが簡単になる。勿論、
ベースプレート4が−を方に推進機8およびエンジン1
0を支持するものであっても、この発明に含まれること
はいうまでもない。 また、この実施例ではベースプレート4とサーフボード
本体lとの間を粘液状のシール部材でシールしているけ
れども、両者4.1の間をゴムパツキンでシールしても
良い。 【発明の効果】 以上説明したように、この発明によれば、エンジンおよ
び推進機を支持するベースプレートがサーフボード本体
と別体に形成されているから組立性が向上する。また、
サーフボードの凹所にベースプレートが取り付けられる
から、大きな凹凸が生じない。しかも、上記凹所がサー
フボードの底面側に設けられているから、凹凸が目立た
なくなり、かつ、エンジンの冷却が促がされる。
However, since it is necessary to assemble individual parts such as an engine and a propulsion device onto a relatively large surfboard body, it is troublesome to assemble one set η, and it is not easy to center the engine and propulsion device, for example. As a countermeasure for this, the surfboard is divided into the +iSi 'F part and the rear part, the propulsion device and the engine are assembled to the latter part, and then the latter part in the unit state and the part to 1γ11 are joined. It is also conceivable to try to improve this. However, if you do this, the above 11; I half and rear'
Irregularities appear between the li portion and the like, impairing the appearance, for example. This invention was made in view of the points mentioned in Section 1. It is an object of the present invention to provide a surfboard with a propulsion device that has improved combinationability, reduces unevenness appearing on the surfboard, and does not stand upright. [Means for solving the problems] In order to achieve the objective J.
The surfboard body constituting the buoyancy body and the base plate supporting the propulsion rock and eisin are formed separately. 1- A recess is provided in the rear part of the bottom side of the surfboard body, and the base plate is installed in this recess. installed. [Operation] According to the present invention, the surfboard body, which is large, and the base plate, which can be made smaller, are separate bodies, so after the propulsion device and engine are assembled to the small base plate, the base plate is attached to the surfboard body. It can be assembled into Furthermore, since a recess is formed in the surfboard body and the base plate is assembled into the recess, the engine and propulsion device fit into the recess. Therefore, the irregularities appearing on the surfboard are reduced. Further, since the base plate is attached to a recess provided in the bottom of the surfboard body, unevenness between the base plate and the surfboard body appears on the bottom side of the surfboard and does not appear on the top side. Therefore, the unevenness becomes less noticeable. [Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a surfboard body, and 2 is a control grip. ” - written on the surfboard body l,
A recess 3 as shown in FIG. 2 is provided on the bottom side of the rear portion 1a. As shown in FIG. 3, this surfboard main body is made up of a foamed resin Ib covered with a fiber-reinforced plastic outer skin 1c, and constitutes a buoyant body that provides buoyancy. Reference numeral 4 denotes an aluminum base plate, which is formed separately from the main body of the surfboard, and is flanged to the lower housing 7, which integrally forms the upper fins 5 and the water passage wall, at the rear of the base plate, and is connected to the water jet. The propulsion unit 8 is supported in the ) direction. On the other hand, the L-shaped base plate 4 supports a fuel tank 9 and an engine 10 upwardly in the central portion in front of the inclined wall 4b. The base plate 4 has a cap-shaped cross section at its front portion, and is sealed with a cover 11 to form an exhaust passage 12. The lower housing 7 is made of metal, and the cover 11 is made of synthetic resin. 1- The base plate 4 has a flange 4a formed on its periphery as shown by the broken line in FIG. 4, and is attached to the recess 3 in FIG. 3. For example, a slimy seal member (not shown) is interposed between the flange 4a and the outer skin IC, and the bolt 1
The base plate 4 is fastened by a fastening member such as 3.
A space (engine room) S above the engine room is sealed from the outside. The above-mentioned autojet propulsion device 8 is connected to and driven by the engine 10 via the connecting shaft 3, and the water sucked in from the water intake port 14 is sent from the injection port 5 to the rear B of the surfboard.
This is what gives the surfboard propulsion. The connecting shaft 13 passes through the inclined wall 4b of the base plate 4, and a mechanical seal 16 is provided in this penetrating portion. Note that 17 is a bearing, and 18 is a connecting portion. Reference numeral 19 denotes an intake passage, which passes through the interior of the surfboard body 1 to the front part of the surfboard body 1, and guides intake air into the space S. Note that a throttle wire, a starter cable, etc. (not shown) are inserted into this intake passage 19, and the engine IO can be operated from the control grip 2 shown in FIG. 1 or the like. In FIG. 4, an expansion chamber 20 is disposed within the exhaust passage 12. As shown in FIG. Therefore, the exhaust gas from the engine lO is as shown in FIG.
The expansion chamber 20, the exhaust passage 12 and the exhaust pipe 22 shown in FIG.
Through. It is exhausted to the rear B, for example, underwater. Although not shown, an inspection hole for the spark plug 23, a refueling port for the fuel tank 9, etc. are provided on the lower surface of the base plate 4, and are sealed with a removable cap that has sealing properties. . In the above configuration, the present invention has a large surfboard main body l and a smaller base plate 4.
are separate entities. Therefore, after assembling the small base plate 4 with the autojet propulsion device 8, expansion chamber 20, lower housing 7 shown in FIG. Body l
It can be assembled into Therefore, the ease of assembling the surfboard is improved, for example by allowing sub-assembly. Further, since a recess 3 is formed in the surfboard main body 1 and the base plate 4 is assembled into this recess 3, the propulsion device 8, engine 1O, etc. enter into the recess 3. therefore,
Large irregularities do not occur on the surfboard. Moreover, since the recess 3 is provided on the bottom side of the surfboard body 1, for example, unevenness at the connection between the surfboard body 1 and the base plate 4, or unevenness caused by the bolts 13, etc. do not appear on the top side of the surfboard. Therefore, since the unevenness is not noticeable, the appearance, for example, is not impaired. By the way, the engine 10 becomes hot as it operates. Here, in the present invention, the engine IO is disposed at the bottom of the surfboard located below the water surface, and therefore cooling of the engine 10 is facilitated. Further, in this embodiment, the base plate 4 is connected to the engine 1.
It has an inclined wall 4b that is curved upward as it goes rearward from the point where it supports the propulsion device 8, and supports the propulsion device 8 downward. Therefore, since the propulsion device 8 and the space S serving as the engine room can be partitioned by the inclined wall 4b, the sealing between the propulsion device 8 and the engine 10 becomes easy. Of course,
The base plate 4 is facing towards the propulsion unit 8 and the engine 1.
It goes without saying that even if it supports 0, it is included in the present invention. Furthermore, in this embodiment, the space between the base plate 4 and the surfboard body 1 is sealed with a sticky seal member, but the space between the two 4.1 may be sealed with a rubber gasket. As described above, according to the present invention, the base plate that supports the engine and the propulsion device is formed separately from the surfboard main body, which improves the ease of assembly. Also,
Since the base plate is attached to the recess of the surfboard, there are no large irregularities. Furthermore, since the recesses are provided on the bottom side of the surfboard, the unevenness becomes less noticeable and cooling of the engine is promoted.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明にかかるサーフボード本体の側面図、
第2図は開底面図、第3図はサーフボードの後部の縦断
面図、第4図は同平面断面図、第5図は第3図のv−v
線断面図である。 1・・・サーフボード本体、1 a ・”後部、3・・
・凹所、4・・・ベースプレート、8・・・推進機、1
0・−エンジン。 第1図 第3図 ■ 10:エンシ“ン 第 4 図
FIG. 1 is a side view of the surfboard main body according to the present invention;
Figure 2 is an open bottom view, Figure 3 is a longitudinal sectional view of the rear part of the surfboard, Figure 4 is a sectional view of the same plane, and Figure 5 is v-v of Figure 3.
FIG. 1...Surfboard body, 1a ・"rear part, 3...
・Recess, 4...Base plate, 8...Propulsion device, 1
0.-Engine. Figure 1 Figure 3 ■ 10: Engine Figure 4

Claims (1)

【特許請求の範囲】[Claims] (1)浮力体を構成するサーフボード本体の底面側の後
部に凹所が設けられ、推進機とこの推進機を駆動させる
エンジンとを支持するベースプレートが上記サーフボー
ド本体と別体に形成され、上記ベースプレートが上記凹
所に取り付けられてなることを特徴とする推進機付サー
フボード。
(1) A recess is provided in the rear part of the bottom side of the surfboard body constituting the buoyant body, and a base plate that supports a propulsion device and an engine that drives the propulsion device is formed separately from the surfboard body, and the base plate A surfboard with a propulsion device, characterized in that: is attached to the recess.
JP62305485A 1987-12-02 1987-12-02 Surfboard with propeller Pending JPH01148694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62305485A JPH01148694A (en) 1987-12-02 1987-12-02 Surfboard with propeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62305485A JPH01148694A (en) 1987-12-02 1987-12-02 Surfboard with propeller

Publications (1)

Publication Number Publication Date
JPH01148694A true JPH01148694A (en) 1989-06-12

Family

ID=17945726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62305485A Pending JPH01148694A (en) 1987-12-02 1987-12-02 Surfboard with propeller

Country Status (1)

Country Link
JP (1) JPH01148694A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6192817B1 (en) * 1999-07-08 2001-02-27 Andrzej Dec Motorized surfboard
US6568340B2 (en) 2000-11-14 2003-05-27 Andrzej Dec Motorized wakeboard
US7597600B2 (en) 2007-11-01 2009-10-06 Surfango, Inc. Engine for driving a watercraft propelled by a water jet
US7731553B2 (en) 2007-10-09 2010-06-08 Surfango, Inc. Watercraft propelled by a water jet
US7874883B2 (en) 2007-11-14 2011-01-25 Surfango, Inc. System for steering and maneuvering a watercraft propelled by a water jet
US7950974B2 (en) 2007-08-27 2011-05-31 Surfango, Inc. Weed cutter for a craft propelled by a water jet
US20120225598A1 (en) * 2010-07-01 2012-09-06 Boomerboard, Llc Motorized watercraft system with interchangeable motor module
US8480447B2 (en) 2004-11-01 2013-07-09 Boomerboard, Llc Powered surfboard for preserving energy of a surfer during paddling
US8851947B2 (en) 2011-09-07 2014-10-07 Boomerboard, Llc Inflatable watercraft with battery powered motorized cassette
US8870614B2 (en) 2011-06-30 2014-10-28 Boomerboard, Llc System for mounting a motorized cassette to a watercraft body

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916079U (en) * 1972-05-15 1974-02-09
JPS5113316A (en) * 1974-07-24 1976-02-02 Hitachi Shipbuilding Eng Co IGATAKANSOHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4916079U (en) * 1972-05-15 1974-02-09
JPS5113316A (en) * 1974-07-24 1976-02-02 Hitachi Shipbuilding Eng Co IGATAKANSOHOHO

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6192817B1 (en) * 1999-07-08 2001-02-27 Andrzej Dec Motorized surfboard
US6568340B2 (en) 2000-11-14 2003-05-27 Andrzej Dec Motorized wakeboard
US8480447B2 (en) 2004-11-01 2013-07-09 Boomerboard, Llc Powered surfboard for preserving energy of a surfer during paddling
US9701372B2 (en) 2004-11-01 2017-07-11 Boomerboard, Llc Powered surfboard for preserving energy of a surfer during paddling
US7950974B2 (en) 2007-08-27 2011-05-31 Surfango, Inc. Weed cutter for a craft propelled by a water jet
US7731553B2 (en) 2007-10-09 2010-06-08 Surfango, Inc. Watercraft propelled by a water jet
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