200530081 (發明說明應敘^月：發明所屬之技術領域、先前技術、內容、實施方式及圖式簡單說明） 【發明所屬之技術領域】 本發明係與船艇有關，特別是關於一種推進效率較佳 之動力式船艇。 5 【先前技術】 如第四圖所示，一般常見之動力式船艇（90)，包含有 一船身（91)、一引擎（92)、一動葉輪（93)以及一舵板（94); 引擎（92)係設於船身（91)内部，且驅轉一傳動轴（96);傳 動軸（96)係穿出船身（91)之底側，而動葉輪（93)設於傳動 10 軸（96)之末端，舵板（94)則設於動葉輪（93)之外側，可相 對於船身（91)左右偏轉；當引擎（92)帶動傳動軸（96)使動 葉輪（93)在水中旋轉時，即可產生推進力使船身（91)前 進，並且藉由偏轉之舵板（94)控制船身（91)轉向。 然而，由於上述傳動軸（96)之軸向係與船身（91)之前 15後軸向呈向下8°〜15。的傾斜角度，使傳動轴（96)必須具 有較長之長度才能伸入水中，造成位於傳動軸（96)末端之 動葉輪（93)係呈傾斜狀且吃水深度較深，使得船艇（g〇)在 航行時，經由動葉輪（93)旋轉所產生之有效推進分力較小 且推進效率較低；另外，上述之動葉輪（93)旋轉時容易於 20船身（91)後方形成渦流（vortex)，使船艇難以操控；而動 葉輪（93)及蛇板（94)構件係皆外露於船身（gi)底部外側， 容易在船艇航行時碰撞到外物，或是旋轉時與外物糾纏在 一起而造成損壞。 0續次頁（發明說明頁不敷使用時，請註記並使用續頁） 200530081 _ 發明說明 【發明内容】 本發明之主要目的即在提供一種動力式船艇，其傳動 軸之傾斜角度較小，使得船艇之推進效率較高。 本發明之另一目的乃在提供一種動力式船艇，其組成 5 構件較不易損壞。 為達成前揭目的，本發明之動力式船艇，包含有：一 船身，係呈殼體，具有一船底以及一船尾；該船身於該船 底具有至少一呈凹陷狀之通道；該通道係沿該船身之前後 向自該船底朝該船尾延伸；一驅動裝置，具有一設於該船 10 身内部之引擎以及一受該引擎驅轉之傳動軸，該傳動軸之 末端係自該船身内部穿經該通道而朝該船尾延伸；一導流 裝置，具有一導流罩、一動葉輪、一靜葉輪以及一舵板； 該導流罩係呈圓筒狀，以同轴於該傳動轴之方式設於該通 道靠近該船尾之一端；該靜葉輪及該動葉輪皆設於該導流 15 罩内，且該動葉輪受該傳動轴驅轉，而該舵板則樞設於該 導流罩後端。 【實施方式】 茲配合圖式舉一較佳實施例對本發明之結構及功能作 20 詳細說明，其中所用圖式先簡要說明如下： 第一圖係本發明第一較佳實施例之局部側視圖； 第二圖係本發明第一較佳實施例之後視圖；以及 第三圖係本發明第二較佳實施例之後視圖。 請參閱第一及第二圖，本發明一較佳實施例所提供之 200530081 發明說明#賣胃 動力式船艇（10)，包含有： 一船身（11)，係以強化玻璃纖維塑膠（FRP)或是鋁合金 材料所製成之殼體，具有一船底（12)以及一船尾（14)，船 身（11)於船底（12)中央靠近船尾（14)處具有一沿船身（11) 5 之前後向延伸的通道（16);通道（16)之斷面係呈半圓形， 使船底（10)於通道（16)位置之側壁係呈由下向上之凹陷 狀’且船底（12)於通道（16)尾端之側壁係高於船底（12)之 其他部分；船身（10)另於船尾（14)處具有一龍骨部（is)， 龍骨部（18)係凸出於船底（12)，用以增加船身（1〇)之操縱 10 穩定性。 一驅動裝置（20)，具有一引擎（22)以及一傳動軸 (24)，引擎（22)係設於船身（11)内部，用以提供推進動力， 而傳動軸（24)係自引擎（22)向外側延伸，且與船身（11)前 後軸向呈約6°之傾斜角度穿過船底（12)經由通道 15 〇6)朝船尾（14)延伸。 一導流裝置（30)，具有一導流罩（32)、一靜葉輪（34)、 一動葉輪（36)以及一舵板（38);導流罩（32)係呈圓筒狀， 靜葉輪（34)係固設於導流罩（32)之一端，而舵板（38)樞設 於導流罩（32)之後端，動葉輪（36)則位於靜葉輪（34)及舵 20板（38)之間；其中，靜葉輪（34)及動葉輪（36)皆設有若干 具預定旋向之葉片（33)(37)，且二者係以葉片（33)(37)旋 向相反之方式同轴設於導流罩（32)内；導流罩（32)藉由若 干螺检（39)以同軸於傳動軸（24)之方式，固設於船身（11) 之通道（16)靠近船尾（14)端，使得傳動軸（24)穿設於靜葉 -6- 200530081 發明說明續頁 輪（34)中央之-橡膠軸承（圖中未示），且末端設於動葉輪 (36)中央，用以帶動動葉輪（36)旋轉。 研 以上即為本發明-較佳實施例所提供之結構。此外， 船身（11)之船尾（14)端另設有一連動機構（4〇)，連動機構 5 (4〇)係與船身（11)内部之操控系統連接，並連動於舵板 (38)頂端，用以控制舵板（38)之偏轉動作，惟此連動=構 (40)非本案創作重點，容不贅述。 藉由上述結構，當引擎（22)驅轉傳動軸（24)，進而帶 · 動動葉輪（36)旋轉時，船底（12)之水流即會自船身（11)之 10前方經由通道（16)吸至後方之導流罩（32)内，透過靜葉輪 (34)及動葉輪（36)之葉片（33)(37)導引而形成推進水流， 再由導流罩（32)之後端喷出，藉以推動船身（11)前進；若 控使舵板（38)之板面偏轉，則可改變推進水流的喷出方 向，進而改變船身（11)的前進方向。 15 與習用之動力式船艇相較下，本發明具有以下優點： 一、由於傳動軸（24)係呈5。~6。之傾斜角度，使得 動葉輪（36)較呈直立狀且吃水較淺，使得經由動葉輪（36) · 旋轉帶動，所形成之推進水流的有效推進分力較大，增加 推進效率。 10 二、當導流裝置（30)之動葉輪（36)旋轉時，水流係先 流入導流罩（32)内，經過靜葉輪（34)的葉片導弓丨後再由動 葉輪（36)帶動，因此在船艉後方較不易產生渦流，即可提 升推進效率，以及增加船艇之操控性。 三、動葉輪（36)係設於導流罩（32)内部旋轉，較不易 -7- 200530081 受到外物的勾纏而導致損壞；而且動葉輪（36)不會傷害到 位於船底附近之魚類、游泳者或是潛水人員，因而較適合 應用在救難工作船艇。 此外，本發明亦可依需要而改變所裝設導流裝置之位 5 置或是數量；請參閱第三圖所示，係本發明第二較佳實施 例之動力式船艇（60)，其主要組成構件與第一較佳實施例 大致相同，特點在於船身（61)之底部形成有二通道（62)， 係分設於船身（61)中央二側；而船身（61)於各通道（62)内 皆設有一導流裝置（63)，藉此本發明即可適用於需要較大 10 推進力之雙推進器式船艇。 200530081 發明說明 【圖式之簡單說明】 第一圖係本發明第一較佳實施例之局部側視圖； 第二圖係本發明第一較佳實施例之後視圖； 第三圖係本發明第二較佳實施例之後視圖；以及 5 第四圖係習用船艇之側視圖。 【圖式符號說明】 11船身 12船底 14船尾 16通道 10 18龍骨部 20驅動裝置 22引擎 24傳動轴 30導流裝置 32導流罩 33葉片 34靜葉輪 36動葉輪 37葉片 15 38舵板 39螺栓 40連動機構 -9-200530081 (Explanation of the invention should be described in January: brief description of the technical field, prior art, content, embodiments and drawings of the invention) [Technical field to which the invention belongs] The present invention relates to ships, and more particularly to a propulsion efficiency comparison Best Powered Boat. 5 [Prior art] As shown in the fourth figure, a common power boat (90) includes a hull (91), an engine (92), a moving impeller (93), and a rudder plate (94); The engine (92) is arranged inside the hull (91) and drives a transmission shaft (96); the transmission shaft (96) penetrates the bottom side of the hull (91), and the moving impeller (93) is arranged on the transmission The end of the 10 shaft (96), the rudder plate (94) is located outside the moving impeller (93), and can be deflected left and right relative to the hull (91); when the engine (92) drives the transmission shaft (96) to make the moving impeller ( 93) When rotating in the water, the propulsive force can be generated to advance the hull (91), and the steering of the hull (91) is controlled by the deflected rudder plate (94). However, since the axial direction of the above-mentioned transmission shaft (96) and the axial direction of the front and rear of the hull (91) are 15 ° to 15 ° downward. The inclination angle of the transmission shaft (96) must have a long length to extend into the water, causing the moving impeller (93) at the end of the transmission shaft (96) to be inclined and the draft to be deep, making the boat (g 〇) During navigation, the effective propulsion component force generated by the rotation of the moving impeller (93) is small and the propulsion efficiency is low; in addition, the above moving impeller (93) is liable to form a vortex behind the 20 hull (91) when rotating. (Vortex), making it difficult to control the boat; while the moving impeller (93) and snake plate (94) are exposed outside the bottom of the hull (gi), it is easy to hit foreign objects when the boat is sailing, or when it is rotating Entangle with foreign objects and cause damage. 0 Continued pages (Please note and use continuation pages when the invention description page is not enough.) 200530081 _ Summary of the invention [Summary of the invention] The main purpose of the present invention is to provide a power boat with a smaller inclination angle of the transmission shaft This makes the ship's propulsion efficiency higher. Another object of the present invention is to provide a powered boat, the components of which are less prone to damage. In order to achieve the purpose of the previous disclosure, the power boat of the present invention includes: a hull, which is a shell, has a bottom and a stern; the hull has at least one recessed channel on the bottom; the channel It extends from the bottom of the ship to the stern along the hull; a drive device has an engine located inside the 10 hull of the ship and a drive shaft driven by the engine, the end of the drive shaft is from the The inside of the hull passes through the passage and extends towards the stern; a deflector device having a deflector, a moving impeller, a static impeller, and a rudder; the deflector is cylindrical and coaxial with the deflector The mode of the transmission shaft is set at one end of the passage near the stern; the static impeller and the moving impeller are both set in the guide 15 cover, and the moving impeller is driven by the transmission shaft, and the rudder plate is pivoted on The rear end of the shroud. [Embodiment] The structure and function of the present invention will be described in detail with reference to the drawings in a preferred embodiment. The drawings used are briefly explained as follows: The first figure is a partial side view of the first preferred embodiment of the present invention. A second view is a rear view of the first preferred embodiment of the present invention; and a third view is a rear view of the second preferred embodiment of the present invention. Please refer to the first and second figures. 200530081 发明 说明 # Stomach-powered boat (10) provided by a preferred embodiment of the present invention includes: a hull (11), which is made of reinforced glass fiber plastic ( FRP) or aluminum alloy shell, has a bottom (12) and a stern (14), the hull (11) in the center of the bottom (12) near the stern (14) has a along the hull ( 11) 5 the channel (16) extending forward and backward; the cross section of the channel (16) is semi-circular, so that the side wall of the bottom of the ship (10) at the channel (16) is a depression from the bottom up and the bottom of the ship (12) The side wall at the aft end of the passage (16) is higher than the bottom of the ship (12); the hull (10) has a keel (is) at the stern (14), and the keel (18) is convex Out of the bottom (12), it is used to increase the stability of the hull (10). A driving device (20) has an engine (22) and a transmission shaft (24). The engine (22) is provided inside the hull (11) to provide propulsion power, and the transmission shaft (24) is from the engine (22) extends outward, and passes through the bottom (12) of the ship (11) at an angle of inclination of approximately 6 ° from the front-rear axial direction to the stern (14). A deflector (30) has a deflector (32), a static impeller (34), a moving impeller (36), and a rudder plate (38); the deflector (32) is cylindrical, and The impeller (34) is fixed at one end of the shroud (32), and the rudder plate (38) is pivoted at the rear end of the shroud (32). Between the plate (38); among them, the stationary impeller (34) and the movable impeller (36) are provided with a plurality of blades (33) (37) with a predetermined rotation direction, and the two are rotated by the blades (33) (37). It is coaxially arranged in the shroud (32) in the opposite way; the shroud (32) is fixed to the hull (11) in a coaxial manner with the transmission shaft (24) through a number of screw inspections (39). The passage (16) is close to the stern (14) end, so that the transmission shaft (24) runs through the static leaf-6- 200530081. Description of the invention Continuing wheel (34)-rubber bearing (not shown) in the center, and the end is set at The center of the impeller (36) is used to drive the impeller (36) to rotate. The research above is the structure provided by the present invention-the preferred embodiment. In addition, the stern (14) end of the hull (11) is provided with a linkage mechanism (40). The linkage mechanism (5) is connected to the control system inside the hull (11) and is linked to the rudder plate (38). ) Top, used to control the deflection of the rudder plate (38), but the linkage = structure (40) is not the focus of this case, so I won't go into details. With the above structure, when the engine (22) drives the transmission shaft (24), and then the moving impeller (36) rotates, the water current on the bottom of the ship (12) will pass through the channel from the front of the hull (11) to 10 16) Suction into the rear shroud (32), guided by the blades (33) (37) of the static impeller (34) and the moving impeller (36) to form a propulsion water flow, and then behind the shroud (32) The end of the jet is used to push the hull (11) forward; if the surface of the rudder plate (38) is controlled to deflect, the jetting direction of the propulsion water can be changed, and then the forward direction of the hull (11) is changed. 15 Compared with the conventional power boat, the present invention has the following advantages: First, because the transmission shaft (24) is in the form of 5. ~ 6. The inclination angle makes the moving impeller (36) more upright and shallower draught, so that through the moving impeller (36) · rotation, the effective propulsion component of the propulsion water flow formed is larger and the propulsion efficiency is increased. 10 2. When the moving impeller (36) of the deflector (30) rotates, the water flow first flows into the shroud (32), passes through the blade guide bow of the static impeller (34), and then is moved by the moving impeller (36) Driven, so it is less likely to generate eddy currents behind the bow, which can improve propulsion efficiency and increase the maneuverability of the boat. 3. The moving impeller (36) is installed inside the shroud (32) to rotate, which is less likely to be damaged by foreign objects. The moving impeller (36) will not hurt fish near the bottom of the ship. , Swimmers or divers, so it is more suitable for rescue work boats. In addition, the present invention can also change the position or quantity of the installed diversion device according to the need; please refer to the third figure, which is the power boat (60) of the second preferred embodiment of the present invention. The main components are substantially the same as the first preferred embodiment, and are characterized in that two passages (62) are formed at the bottom of the hull (61), which are located on the two sides of the center of the hull (61); and the hull (61) A diversion device (63) is provided in each passage (62), so that the present invention can be applied to a double-thruster type boat that requires a large 10 propulsion force. 200530081 Description of the invention [A brief description of the drawings] The first diagram is a partial side view of the first preferred embodiment of the present invention; the second diagram is a rear view of the first preferred embodiment of the present invention; the third diagram is the second diagram of the present invention Rear view of the preferred embodiment; and 5 The fourth view is a side view of a conventional boat. [Illustration of symbols] 11 hull 12 bottom 14 stern 16 channel 10 18 keel part 20 driving device 22 engine 24 transmission shaft 30 guide device 32 guide shroud 33 blade 34 static impeller 36 moving impeller 37 blade 15 38 rudder plate 39 Bolt 40 linkage mechanism-9-