JP2017132458A - Two-stage shaft sleeve for screw for boat and screw for boat mounted with the same - Google Patents

Two-stage shaft sleeve for screw for boat and screw for boat mounted with the same Download PDF

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JP2017132458A
JP2017132458A JP2017008049A JP2017008049A JP2017132458A JP 2017132458 A JP2017132458 A JP 2017132458A JP 2017008049 A JP2017008049 A JP 2017008049A JP 2017008049 A JP2017008049 A JP 2017008049A JP 2017132458 A JP2017132458 A JP 2017132458A
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transmission member
boat
transmission
shaft sleeve
outer peripheral
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允進 林
Yeun-Junn Lin
允進 林
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Solas Science & Eng Co Ltd
Solas Science & Engineering Co Ltd
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Solas Science & Eng Co Ltd
Solas Science & Engineering Co Ltd
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/24—Arrangements, apparatus and methods for handling exhaust gas in outboard drives, e.g. exhaust gas outlets
    • B63H20/26—Exhaust gas outlets passing through the propeller or its hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • 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
    • B63H23/32—Other parts
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • B63H2023/342—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts comprising couplings, e.g. resilient couplings; Couplings therefor

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a two-stage shaft sleeve for screw for boat and a screw for boat mounted with the same.SOLUTION: A two-stage shaft sleeve 40 of a screw for boat has a first transmission member 50 and a second transmission member 60. The first transmission member has a storage groove 52 and two projections 54 arranged with an interval in-between. The two projections are arranged so as to extend from a wall surface of the storage groove to a constant distance at a rear part. The second transmission member has a tube axis 70 and a vibration absorber 80. The tube axis has a first transmission portion 71 and a second transmission portion 72. The first transmission portion of the tube axis is inserted into the storage groove of the first transmission member, and has the projection outside. The projection outside of the first transmission portion is positioned between the two projections inside of the first transmission member, and is engaged with the one projection. The vibration absorber covers the outer peripheral surface of the second transmission portion of the tube axis.SELECTED DRAWING: Figure 3

Description

本発明は、ボート用スクリューに関し、詳しくはボート用スクリューの二段式シャフトスリーブおよびそれを着用したボート用スクリューに関するものである。   The present invention relates to a boat screw, and more particularly to a two-stage shaft sleeve of a boat screw and a boat screw wearing the same.

一般のボート用スクリューは、プロペラハブと、プロペラハブに連結された複数の羽根と、プロペラハブ内に装着されたシャフトスリーブとを備える。ボート用スクリューを運転させる際、エンジンは駆動軸によってシャフトスリーブに動力を伝送し、シャフトスリーブを作動させるとともにプロペラハブを旋転させる。羽根はプロペラハブの旋転によって推進動力を生じる。   A general boat screw includes a propeller hub, a plurality of blades connected to the propeller hub, and a shaft sleeve mounted in the propeller hub. When the boat screw is operated, the engine transmits power to the shaft sleeve by the drive shaft to operate the shaft sleeve and rotate the propeller hub. The blades generate propulsion power by the rotation of the propeller hub.

従来のシャフトスリーブは金属などの硬質材料から製作されることが一般的である。旋転中のスクリューが異物に衝突する際、シャフトスリーブの破裂が起こりやすいだけでなく、駆動軸を損壊させてしまう可能性がある。シャフトスリーブが破裂すると、プロペラハブを順調に旋転させることができず、動力伝送効果に影響を与える。一方、駆動軸の出力に伴って生じたトルクが比較的大きい場合、シャフトスリーブを破裂させる可能性があるため、従来のシャフトスリーブは馬力が大きいエンジンに適用できない。   Conventional shaft sleeves are generally made of a hard material such as metal. When the rotating screw collides with a foreign object, not only is the shaft sleeve easily ruptured, but the drive shaft may be damaged. If the shaft sleeve ruptures, the propeller hub cannot be smoothly rotated, which affects the power transmission effect. On the other hand, when the torque generated with the output of the drive shaft is relatively large, the shaft sleeve may be ruptured, so that the conventional shaft sleeve cannot be applied to an engine having a large horsepower.

それに対し、特許文献１（権利者が本件の出願人）により掲示されたシャフトスリーブは、金属層と、金属層を覆う振動吸収層とを備え、金属層によってエンジンの駆動軸に嵌合され、振動吸収層によってプロペラハブの軸孔に嵌合される。旋転中のプロペラハブが異物に衝突する際、シャフトスリーブは振動吸収層によって振動吸収効果を生じるため、金属層の破裂を抑制できるだけでなく、駆動軸を損壊させないように保護できる。しかしながら、エンジンを起動した時にエンジンの駆動軸の出力によって生じた瞬間トルクはシャフトスリーブを介してプロペラハブに伝わり、動力を伝送する過程において緩衝時間を持たないため、スクリューは受けた衝撃力が大きく、一時的に振動が生じることがよくある。   On the other hand, the shaft sleeve posted by patent document 1 (right holder is the applicant of this case) is equipped with the metal layer and the vibration absorption layer which covers a metal layer, and is fitted by the drive shaft of the engine by the metal layer, The vibration absorbing layer is fitted into the shaft hole of the propeller hub. When the rotating propeller hub collides with a foreign object, the shaft sleeve generates a vibration absorbing effect by the vibration absorbing layer, so that not only the metal layer can be prevented from being ruptured, but also the drive shaft can be protected from being damaged. However, the instantaneous torque generated by the output of the engine drive shaft when the engine is started is transmitted to the propeller hub via the shaft sleeve, and since there is no buffer time in the power transmission process, the impact force received by the screw is large. Often, vibrations occur temporarily.

台湾実用新案Ｍ３１０１７５号公報Taiwan Utility Model M310175

本発明は、ソフトスタート方式によって瞬間トルクが大き過ぎて振動を生じさせることを緩和し、起動時の安定性および順調さを向上させるボート用スクリューの二段式シャフトスリーブを提供することを主な目的とする。   The main object of the present invention is to provide a two-stage shaft sleeve for a boat screw that alleviates the occurrence of vibration due to an excessively large instantaneous torque by the soft start method and improves the stability and smoothness at start-up. Objective.

本発明は、前記二段式シャフトスリーブを着用したボート用スクリューを提供することを別の一つの目的とする。   Another object of the present invention is to provide a boat screw with the two-stage shaft sleeve.

上述した課題を解決するため、二段式シャフトスリーブは第一伝動部材および第二伝動部材を備える。第一伝動部材は格納溝と、二つの内部に位置する凸状部とを有する。二つの凸状部は相互に一定の距離を保ち、かつ格納溝の壁面から格納溝の径方向に沿って奥へ伸びるように配置される。第二伝動部材は管軸を有する。管軸は第一伝動部位と、第一伝動部位に連結される第二伝動部位とを有する。管軸の第一伝動部位は第一伝動部材の格納溝に差し込まれ、外周面に少なくとも一つの凸状部を有する。第一伝動部位の外周面の凸状部は第一伝動部材の内部の二つの凸状部の間に位置付けられる。第二伝動部材は振動吸収体を有する。振動吸収体は管軸の第二伝動部位の外周面を覆う。   In order to solve the above-described problem, the two-stage shaft sleeve includes a first transmission member and a second transmission member. The first transmission member has a storage groove and two convex portions located inside. The two convex portions are arranged so as to maintain a certain distance from each other and extend from the wall surface of the storage groove to the back along the radial direction of the storage groove. The second transmission member has a tube shaft. The tube shaft has a first transmission part and a second transmission part connected to the first transmission part. The first transmission portion of the tube shaft is inserted into the storage groove of the first transmission member and has at least one convex portion on the outer peripheral surface. The convex part of the outer peripheral surface of the first transmission part is positioned between the two convex parts inside the first transmission member. The second transmission member has a vibration absorber. The vibration absorber covers the outer peripheral surface of the second transmission portion of the tube shaft.

第二伝動部材と接続したエンジンを起動した時、エンジンは駆動軸によって第二伝動部材を旋転させる。第二伝動部材の管軸の外側の凸状部と第一伝動部材の内部の一つの凸状部とが噛み合う際、第一伝動部材は第二伝動部材とともに旋転する。第一伝動部材が第二伝動部材とともに旋転すれば、エンジンから出力された動力をスクリューに伝送し、スクリューによって推進動力を生じることができる。上述した構造により、本発明による二段式シャフトスリーブはエンジンの起動に伴って生じた動力を遅滞させ、瞬間トルクが大き過ぎて振動を生じさせることを緩和することができるだけでなく、ボート用スクリューを起動する時の安定性および順調さを向上させることができる。起動時の安定性を良好に維持できるほかには、異物に衝突する際、第二伝動部材の振動吸収体によって振動吸収効果を生じ、第二伝動部材の管軸およびエンジンの駆動軸を損壊させないように保護することができる。   When the engine connected to the second transmission member is started, the engine rotates the second transmission member by the drive shaft. When the convex portion outside the tube shaft of the second transmission member meshes with one convex portion inside the first transmission member, the first transmission member rotates together with the second transmission member. If the first transmission member rotates together with the second transmission member, power output from the engine can be transmitted to the screw, and propulsion power can be generated by the screw. Due to the structure described above, the two-stage shaft sleeve according to the present invention not only delays the power generated as the engine starts, but can mitigate the generation of vibration due to the instantaneous torque being too large. The stability and smoothness when starting up can be improved. Besides being able to maintain good stability at startup, when it collides with a foreign object, the vibration absorber of the second transmission member produces a vibration absorption effect and does not damage the tube shaft of the second transmission member and the engine drive shaft. Can be protected.

上述した課題を解決するため、前記二段式シャフトスリーブを着用したボート用スクリューは、プロペラハブおよび複数の羽根を有する。複数の羽根はプロペラハブの外周面に連結される。二段式シャフトスリーブはプロペラハブの軸孔に差し込まれ、エンジンの駆動軸に接続される。   In order to solve the above-described problem, a boat screw wearing the two-stage shaft sleeve includes a propeller hub and a plurality of blades. The plurality of blades are connected to the outer peripheral surface of the propeller hub. The two-stage shaft sleeve is inserted into the shaft hole of the propeller hub and connected to the drive shaft of the engine.

本発明によるボート用スクリューの二段式シャフトスリーブの詳細な構造、特徴、組み立てまたは使用方法は、以下の実施形態の詳細な説明を通して明確にする。また、以下の詳細な説明および本発明により提示された実施形態は本発明を説明するための一例に過ぎず、本発明の請求範囲を限定できないことは、本発明にかかわる領域において常識がある人ならば理解できるはずである。   The detailed structure, features, assembly or use of the two-stage shaft sleeve of the boat screw according to the present invention will be clarified through the detailed description of the embodiments below. Further, the following detailed description and the embodiments presented by the present invention are only examples for explaining the present invention, and it is not common to limit the scope of the present invention. If so, it should be understood.

本発明の一実施形態によるボート用スクリューを示す斜視図である。It is a perspective view which shows the screw for boats by one Embodiment of this invention. 本発明の一実施形態によるボート用スクリューを示す分解斜視図である。It is a disassembled perspective view which shows the screw for boats by one Embodiment of this invention. 本発明の一実施形態によるボート用スクリューの二段式シャフトスリーブを示す分解斜視図である。It is a disassembled perspective view which shows the two-stage shaft sleeve of the screw for boats by one Embodiment of this invention. 本発明の一実施形態によるボート用スクリューを示す断面図である。It is sectional drawing which shows the screw for boats by one Embodiment of this invention. 本発明の一実施形態によるボート用スクリューの二段式シャフトスリーブを示す背面図である。It is a rear view which shows the two-stage shaft sleeve of the screw for boats by one Embodiment of this invention. 本発明の一実施形態によるボート用スクリューの二段式シャフトスリーブの径方向に沿った断面図、即ち第二伝動部材の外側の凸状部と第一伝動部材の内部の凸状部とを噛み合わせる前の状態を示す断面図である。Sectional drawing along the radial direction of the two-stage shaft sleeve of the boat screw by one Embodiment of this invention, ie, biting the convex part outside the second transmission member, and the convex part inside the first transmission member It is sectional drawing which shows the state before matching. 本発明の一実施形態によるボート用スクリューの二段式シャフトスリーブの径方向に沿った断面図、即ち第二伝動部材の外側の凸状部と第一伝動部材の内部の凸状部とが噛み合う状態を示す断面図である。Sectional drawing along the radial direction of the two-stage shaft sleeve of the boat screw by one Embodiment of this invention, ie, the convex part of the outer side of a 2nd transmission member, and the convex part of the inside of a 1st transmission member mesh | engage It is sectional drawing which shows a state. 本発明の一実施形態によるボート用スクリューの二段式シャフトスリーブの径方向に沿った断面図、即ち第一伝動部材と第二伝動部材とが逆時計方向に回転する状態を示す断面図である。It is sectional drawing along the radial direction of the two-stage shaft sleeve of the screw for boats by one Embodiment of this invention, ie, sectional drawing which shows the state which a 1st transmission member and a 2nd transmission member rotate counterclockwise. .

（一実施形態）
図１および図２に示すように、本発明の一実施形態によるボート用スクリュー１０は、プロペラハブ２０、四つの羽根３０および二段式シャフトスリーブ４０を備える。 (One embodiment)
As shown in FIGS. 1 and 2, a boat screw 10 according to an embodiment of the present invention includes a propeller hub 20, four blades 30, and a two-stage shaft sleeve 40.

プロペラハブ２０は、前後両端を貫通する軸孔２２を有する。   The propeller hub 20 has a shaft hole 22 that penetrates both front and rear ends.

羽根３０は、プロペラハブ２０の外周面に連結される。   The blade 30 is connected to the outer peripheral surface of the propeller hub 20.

二段式シャフトスリーブ４０は、プロペラハブ２０の軸孔２２に差し込まれ、図３に示すように第一伝動部材５０および第二伝動部材６０を有する。   The two-stage shaft sleeve 40 is inserted into the shaft hole 22 of the propeller hub 20 and has a first transmission member 50 and a second transmission member 60 as shown in FIG.

第一伝動部材５０は、金属材質から製作される。第一伝動部材５０がステンレス鋼から製作されれば馬力が大きいエンジンに適用することができる。第一伝動部材５０がアルミニウム合金から製作されれば馬力が小さいエンジンに適用することができる。第一伝動部材５０は格納溝５２と、内部に間隔を置いて配置された四つの凸状部５４とを有する。四つの凸状部５４は格納溝５２の壁面から格納溝５２の径方向に沿って奥の一定の距離まで伸び、二つずつ隣り合う凸状部５４の間に緩衝空間５６を有する。図６に示すように、それぞれの凸状部５４は二つの相対する第一斜面５４１を有する。二つの隣り合う凸状部５４の第一斜面５４１の夾角θは２１度から２５度の間が最も好ましい。第一伝動部材５０の外周面は複数の二つずつ隣り合う第一平面５８が連なることによって形成される。第一伝動部材５０は第一平面５８によってプロペラハブ２０の軸孔２２に嵌合される。   The first transmission member 50 is manufactured from a metal material. If the first transmission member 50 is made of stainless steel, it can be applied to an engine having a large horsepower. If the 1st transmission member 50 is manufactured from an aluminum alloy, it can apply to an engine with small horsepower. The first transmission member 50 includes a storage groove 52 and four convex portions 54 that are spaced apart from each other. The four convex portions 54 extend from the wall surface of the storage groove 52 to a predetermined distance along the radial direction of the storage groove 52, and have a buffer space 56 between the two convex portions 54 adjacent to each other. As shown in FIG. 6, each convex portion 54 has two opposed first inclined surfaces 541. The depression angle θ of the first slope 541 of the two adjacent convex portions 54 is most preferably between 21 degrees and 25 degrees. The outer peripheral surface of the first transmission member 50 is formed by connecting a plurality of adjacent first planes 58 two by two. The first transmission member 50 is fitted into the shaft hole 22 of the propeller hub 20 by the first plane 58.

第二伝動部材６０は、管軸７０を有する。管軸７０は金属材質から製作される。管軸７０がステンレス鋼から製作されれば馬力が大きいエンジンに適用することができる。管軸７０がアルミニウム合金から製作されれば馬力が小さいエンジンに適用することができる。管軸７０は第一伝動部位７１および第一伝動部位７１に連結される第二伝動部位７２に分割される。管軸７０の第一伝動部位７１は第一伝動部材５０の格納溝５２に差し込まれる。管軸７０の第二伝動部位７２は外周面が振動吸収体８０に被覆される。管軸７０の第二伝動部位７２は内周面に伝動歯車７３（図４および図５参照）を有する。管軸７０は第二伝動部位７２の伝動歯車７３とエンジン（図中未表示）の駆動軸（図中未表示）とが噛み合うことによってエンジンの駆動軸の駆動力を受けて旋転することができる。図５および図６に示すように、管軸７０は外側に四つの凸状部７４および四つの支持部７５を有する。四つの凸状部７４はそれぞれ第一伝動部位７１の外周面に配置され、管軸７０の径方向に沿って外部に相対する方向の一定距離まで伸び、二つの相対する第二斜面７４２を有する。管軸７０は外側の凸状部７４によって第一伝動部材５０の緩衝空間５６内に嵌め込まれる。管軸７０の外側の凸状部７４と第一伝動部材５０の内部の一つの凸状部５４とが噛み合う際、図７に示すように、管軸７０の凸状部７４の第二斜面７４２は第一伝動部材５０の内部の凸状部５４の第一斜面５４１に当接するため、管軸７０は第一伝動部材５０を旋転させることができる。四つの支持部７５はそれぞれ第二伝動部位７２の外周面に配置され、管軸７０の径方向に沿って外部に相対する方向の一定距離まで伸び、かつ駆動軸の出力に伴って生じたトルクに耐え、管軸７０をサポートする。   The second transmission member 60 has a tube shaft 70. The tube shaft 70 is manufactured from a metal material. If the tube shaft 70 is made of stainless steel, it can be applied to an engine having a large horsepower. If the tube shaft 70 is made of an aluminum alloy, it can be applied to an engine having a small horsepower. The tube shaft 70 is divided into a first transmission part 71 and a second transmission part 72 connected to the first transmission part 71. The first transmission part 71 of the tube shaft 70 is inserted into the storage groove 52 of the first transmission member 50. The outer peripheral surface of the second transmission portion 72 of the tube shaft 70 is covered with the vibration absorber 80. The second transmission portion 72 of the tube shaft 70 has a transmission gear 73 (see FIGS. 4 and 5) on the inner peripheral surface. The tube shaft 70 can be rotated by receiving the driving force of the engine drive shaft by meshing the transmission gear 73 of the second transmission portion 72 with the drive shaft (not shown in the drawing) of the engine (not shown in the drawing). . As shown in FIGS. 5 and 6, the tube shaft 70 has four convex portions 74 and four support portions 75 on the outside. The four convex portions 74 are respectively disposed on the outer peripheral surface of the first transmission portion 71, extend to a certain distance in the direction facing the outside along the radial direction of the tube shaft 70, and have two opposing second inclined surfaces 742. . The tube shaft 70 is fitted into the buffer space 56 of the first transmission member 50 by the outer convex portion 74. When the convex portion 74 on the outer side of the tube shaft 70 and the one convex portion 54 inside the first transmission member 50 are engaged with each other, as shown in FIG. 7, the second inclined surface 742 of the convex portion 74 of the tube shaft 70 is obtained. Is in contact with the first inclined surface 541 of the convex portion 54 inside the first transmission member 50, so that the tube shaft 70 can rotate the first transmission member 50. The four support portions 75 are respectively arranged on the outer peripheral surface of the second transmission portion 72, extend along the radial direction of the tube shaft 70 to a certain distance in the direction opposite to the outside, and torque generated with the output of the drive shaft To support the tube shaft 70.

図３および図５に示すように、第二伝動部材６０はさらに振動吸収体８０を有する。本実施形態において、振動吸収体８０はゴム製であるが、これに限らない。振動吸収体８０は管軸７０の第二伝動部位７２の外周面を覆うため、管軸７０の支持部７５は振動吸収体８０に被覆される。振動吸収体８０の外周面は複数の二つずつ隣り合う第二平面８２が連なることによって形成される。すべての第二平面８２と第一伝動部材５０の第一平面５８とは揃って並列するため、振動吸収体８０は第二平面８２によってプロペラハブ２０の軸孔２２の壁面に嵌合される。   As shown in FIGS. 3 and 5, the second transmission member 60 further includes a vibration absorber 80. In the present embodiment, the vibration absorber 80 is made of rubber, but is not limited thereto. Since the vibration absorber 80 covers the outer peripheral surface of the second transmission portion 72 of the tube shaft 70, the support portion 75 of the tube shaft 70 is covered with the vibration absorber 80. The outer peripheral surface of the vibration absorber 80 is formed by connecting a plurality of two adjacent second planes 82. Since all the second planes 82 and the first plane 58 of the first transmission member 50 are aligned and parallel, the vibration absorber 80 is fitted to the wall surface of the shaft hole 22 of the propeller hub 20 by the second plane 82.

エンジンが起動される際、エンジンは駆動軸と管軸７０とが噛み合うことによって第二伝動部材６０を旋転させる。このとき第一伝動部材５０は二つずつ隣り合う凸状部５４の間に緩衝空間５６を有するため、エンジンを起動したときに第二伝動部材６０の外側の凸状部７４と第一伝動部材５０の内部の凸状部５４とを噛み合わせることがない。図６に示すように、第二伝動部材６０の外側の凸状部７４と第一伝動部材５０の内部の凸状部５４とを噛み合わせる前に第一伝動部材５０とプロペラハブ２０は静止状態に維持される。第二伝動部材６０の旋転に伴って第二伝動部材６０の外側の凸状部７４と第一伝動部材５０の内部の凸状部５４とが噛み合うと、図７および図８に示すように、第一伝動部材５０は第二伝動部材６０とともに旋転できる。第二伝動部材６０とともに第一伝動部材５０を旋転させれば、第一伝動部材５０および第二伝動部材６０はエンジンの稼働に伴って生じたトルクをプロペラハブ２０に伝送できる。このとき羽根３０はプロペラハブ２０の旋転によって推進動力を生じることができる。   When the engine is started, the engine rotates the second transmission member 60 by engaging the drive shaft with the tube shaft 70. At this time, since the first transmission member 50 has the buffer space 56 between the convex portions 54 adjacent to each other, the convex portion 74 outside the second transmission member 60 and the first transmission member when the engine is started. 50 does not mesh with the convex portion 54 inside. As shown in FIG. 6, the first transmission member 50 and the propeller hub 20 are stationary before the outer convex portion 74 of the second transmission member 60 and the convex portion 54 inside the first transmission member 50 are engaged with each other. Maintained. When the convex portion 74 on the outer side of the second transmission member 60 and the convex portion 54 inside the first transmission member 50 mesh with each other as the second transmission member 60 rotates, as shown in FIGS. The first transmission member 50 can be rotated together with the second transmission member 60. If the first transmission member 50 is rotated together with the second transmission member 60, the first transmission member 50 and the second transmission member 60 can transmit the torque generated with the operation of the engine to the propeller hub 20. At this time, the blade 30 can generate propulsion power by the rotation of the propeller hub 20.

スクリュー１０が異物に衝突する際、管軸７０は第二伝動部位７２の外周面が振動吸収体８０によって被覆され、スクリュー１０に生じた振動を吸収できるため、振動が大き過ぎて金属製の管軸７０を破裂させてしまうことを避け、第二伝動部材６０の管軸７０と接続するエンジンの駆動軸を保護することができる。一方、第二伝動部材６０の管軸７０は支持部７５が駆動軸の出力に伴って生じたトルクに耐えるため、馬力が大きいエンジンに対応できる。   When the screw 10 collides with a foreign object, the outer peripheral surface of the second transmission portion 72 of the tube shaft 70 is covered with the vibration absorber 80 and can absorb the vibration generated in the screw 10. The shaft 70 can be avoided from being ruptured, and the drive shaft of the engine connected to the tube shaft 70 of the second transmission member 60 can be protected. On the other hand, the tube shaft 70 of the second transmission member 60 can cope with an engine having a large horsepower because the support portion 75 can withstand the torque generated with the output of the drive shaft.

上述した構造により、エンジンが起動される際、本発明による二段式シャフトスリーブ４０は緩衝空間５６によってソフトスタートを実現させるだけでなく、エンジンの起動に伴って生じた瞬間トルクが大き過ぎてスクリュー１０を振動させることを効果的に緩和し、スクリュー１０を起動する際の安定性および順調さを向上させることができる。一方、本発明による二段式シャフトスリーブ４０は振動吸収効果を生じ、エンジンを保護し、比較的大きいトルクに耐えることができるため、馬力が大きいエンジンに適用できる。   Due to the above-described structure, when the engine is started, the two-stage shaft sleeve 40 according to the present invention not only realizes the soft start by the buffer space 56 but also the instantaneous torque generated with the start of the engine is too large. It is possible to effectively relax the vibration of the screw 10 and improve the stability and smoothness when starting the screw 10. On the other hand, the two-stage shaft sleeve 40 according to the present invention produces a vibration absorbing effect, protects the engine, and can withstand a relatively large torque, and thus can be applied to an engine having a large horsepower.

１０：ボート用スクリュー、
２０：プロペラハブ、
２２：軸孔、
３０：羽根、
４０：二段式シャフトスリーブ、
５０：第一伝動部材、
５２：格納溝、
５４：凸状部、
５６：緩衝空間、
５４１：第一斜面、
θ：夾角、
５８：第一平面、
６０：第二伝動部材、
７０：管軸、
７１：第一伝動部位、
７２：第二伝動部位、
７３：伝動歯車、
７４：凸状部、
７４１：第二斜面、
７５：支持部、
８０：振動吸収体、
８２：第二平面 10: Boat screw,
20: Propeller hub,
22: Shaft hole,
30: Feather,
40: Two-stage shaft sleeve,
50: first transmission member,
52: storage groove,
54: convex portion,
56: Buffer space,
541: First slope,
θ: depression angle,
58: First plane,
60: second transmission member,
70: tube axis,
71: first transmission site,
72: Second transmission site,
73: Transmission gear,
74: convex part,
741: Second slope,
75: support part,
80: vibration absorber,
82: Second plane

Claims (18)

第一伝動部材および第二伝動部材を備え、
前記第一伝動部材は、格納溝と、少なくとも二つの内部に位置する凸状部とを有し、少なくとも二つの前記凸状部は前記格納溝の壁面から前記格納溝の径方向に沿って奥へ伸びるように配置され、かつ相互に一定の距離を保つことによって二つの前記凸状部の間に緩衝空間を形成し、
前記第二伝動部材は、管軸および振動吸収体を有し、前記管軸は第一伝動部位および前記第一伝動部位に連結される第二伝動部位に分割され、前記管軸の前記第一伝動部位は前記第一伝動部材の前記格納溝に差し込まれ、外周面に少なくとも一つの凸状部を有し、前記第一伝動部位の前記凸状部は前記第一伝動部材の前記緩衝空間に移動可能に嵌め込まれ、かつ前記第一伝動部材の任意の一つの前記凸状部と噛み合い、前記振動吸収体は前記管軸の前記第二伝動部位の外周面を覆うことを特徴とするボート用スクリューの二段式シャフトスリーブ。 A first transmission member and a second transmission member;
The first transmission member has a storage groove and at least two convex portions located inside, and at least two of the convex portions are recessed from the wall surface of the storage groove along the radial direction of the storage groove. Forming a buffer space between the two convex portions by being arranged to extend to each other and maintaining a certain distance from each other,
The second transmission member includes a tube shaft and a vibration absorber, and the tube shaft is divided into a first transmission site and a second transmission site coupled to the first transmission site, and the first of the tube shaft The transmission part is inserted into the storage groove of the first transmission member, and has at least one convex part on the outer peripheral surface, and the convex part of the first transmission part is formed in the buffer space of the first transmission member. The boat is characterized in that it is movably fitted and meshes with any one of the convex portions of the first transmission member, and the vibration absorber covers the outer peripheral surface of the second transmission portion of the tube shaft. Screw two-stage shaft sleeve. 前記第一伝動部材のそれぞれの前記凸状部は少なくとも一つの第一斜面を有し、前記第二伝動部材の前記凸状部は少なくとも一つの第二斜面を有し、前記第二伝動部材の前記凸状部と前記第一伝動部材の前記凸状部とが噛み合う際、前記第二伝動部材の前記凸状部の前記第二斜面は前記第一伝動部材の前記凸状部の前記第一斜面に当接することを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   Each convex portion of the first transmission member has at least one first slope, and the convex portion of the second transmission member has at least one second slope, and When the convex portion and the convex portion of the first transmission member are engaged with each other, the second inclined surface of the convex portion of the second transmission member is the first slope of the convex portion of the first transmission member. The two-stage shaft sleeve for a boat screw according to claim 1, wherein the two-stage shaft sleeve is in contact with a slope. 前記管軸の前記第二伝動部位は、前記外周面に間隔を置いて配置された複数の支持部を有し、前記支持部は前記第二伝動部材の前記振動吸収体によって被覆されることを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   The second transmission portion of the tube shaft has a plurality of support portions arranged at intervals on the outer peripheral surface, and the support portions are covered with the vibration absorber of the second transmission member. The two-stage shaft sleeve for a boat screw according to claim 1, characterized in that: 前記第一伝動部材の外周面と前記第二伝動部材の前記振動吸収体の外周面とは揃って並列することを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   2. The two-stage shaft sleeve for a boat screw according to claim 1, wherein the outer peripheral surface of the first transmission member and the outer peripheral surface of the vibration absorber of the second transmission member are aligned in parallel. 前記第一伝動部材の二つの前記凸状部の間の夾角は２１から２５度の間であることを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   2. The two-stage shaft sleeve for a boat screw according to claim 1, wherein a depression angle between the two convex portions of the first transmission member is between 21 and 25 degrees. 前記第一伝動部材の前記外周面は、複数の二つずつ隣り合う第一平面が連なることによって形成され、前記第二伝動部材の前記振動吸収体の前記外周面は複数の二つずつ隣り合う第二平面が連なることによって形成され、前記第一平面と前記第二平面とは揃って並列することを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   The outer peripheral surface of the first transmission member is formed by connecting a plurality of adjacent first planes, and the outer peripheral surface of the vibration absorber of the second transmission member is adjacent to a plurality of two. 2. The two-stage shaft sleeve for a boat screw according to claim 1, wherein the second plane is formed by a series, and the first plane and the second plane are aligned in parallel. 前記第一伝動部材は、金属材質から製作されることを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   The two-stage shaft sleeve for a boat screw according to claim 1, wherein the first transmission member is made of a metal material. 前記第二伝動部材の前記管軸は、金属材質から製作されることを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   The two-stage shaft sleeve for a boat screw according to claim 1, wherein the tube shaft of the second transmission member is made of a metal material. 前記第二伝動部材の前記振動吸収体は、ゴムから製作されることを特徴とする請求項１に記載のボート用スクリューの二段式シャフトスリーブ。   The two-stage shaft sleeve for a boat screw according to claim 1, wherein the vibration absorber of the second transmission member is made of rubber. プロペラハブと、複数の羽根と、請求項１に記載の二段式シャフトスリーブとを備え、
前記プロペラハブは、軸孔を有し、
複数の前記羽根は、前記プロペラハブの外周面に連結され、
請求項１に記載の前記二段式シャフトスリーブは、前記プロペラハブの前記軸孔に差し込まれることを特徴とするボート用スクリュー。 A propeller hub, a plurality of blades, and the two-stage shaft sleeve according to claim 1,
The propeller hub has a shaft hole;
The plurality of blades are connected to the outer peripheral surface of the propeller hub,
The boat screw according to claim 1, wherein the two-stage shaft sleeve is inserted into the shaft hole of the propeller hub. 前記第一伝動部材の前記凸状部は少なくとも一つの第一斜面を有し、前記第二伝動部材の前記凸状部は少なくとも一つの第二斜面を有し、前記第二伝動部材の前記凸状部と前記第一伝動部材の前記凸状部とが噛み合う際、前記第二伝動部材の前記凸状部の前記第二斜面は前記第一伝動部材の前記凸状部の前記第一斜面に当接することを特徴とする請求項１０に記載のボート用スクリュー。   The convex part of the first transmission member has at least one first slope, the convex part of the second transmission member has at least one second slope, and the convex part of the second transmission member. When the convex portion of the first transmission member meshes with the convex portion of the first transmission member, the second inclined surface of the convex portion of the second transmission member is in contact with the first inclined surface of the convex portion of the first transmission member. The boat screw according to claim 10, which abuts. 前記管軸の前記第二伝動部位は、前記外周面に少なくとも二つの支持部を有し、前記支持部は前記第二伝動部材の前記振動吸収体によって被覆されることを特徴とする請求項１０に記載のボート用スクリュー。   The said 2nd transmission site | part of the said tube shaft has at least 2 support part in the said outer peripheral surface, The said support part is coat | covered with the said vibration absorber of said 2nd transmission member. The screw for boats as described in 2. 前記第一伝動部材の外周面と前記第二伝動部材の前記振動吸収体の外周面とは揃って並列することを特徴とする請求項１０に記載のボート用スクリュー。   11. The boat screw according to claim 10, wherein the outer peripheral surface of the first transmission member and the outer peripheral surface of the vibration absorber of the second transmission member are aligned in parallel. 前記第一伝動部材の前記外周面は、複数の二つずつ隣り合う第一平面が連なることによって形成され、前記第二伝動部材の前記振動吸収体の前記外周面は複数の二つずつ隣り合う第二平面が連なることによって形成され、前記第一平面と前記第二平面とは揃って並列することを特徴とする請求項１０に記載のボート用スクリュー。   The outer peripheral surface of the first transmission member is formed by connecting a plurality of adjacent first planes, and the outer peripheral surface of the vibration absorber of the second transmission member is adjacent to a plurality of two. 11. The boat screw according to claim 10, wherein the boat is formed by connecting second planes, and the first plane and the second plane are aligned in parallel. 前記第一伝動部材の二つの前記凸状部の間の夾角は２１から２５度の間であることを特徴とする請求項１０に記載のボート用スクリュー。   The boat screw according to claim 10, wherein a depression angle between the two convex portions of the first transmission member is between 21 and 25 degrees. 前記第一伝動部材は、金属材質から製作されることを特徴とする請求項１０に記載のボート用スクリュー。   The boat screw according to claim 10, wherein the first transmission member is made of a metal material. 前記第二伝動部材の前記管軸は、金属材質から製作されることを特徴とする請求項１０に記載のボート用スクリュー。   The boat screw according to claim 10, wherein the tube shaft of the second transmission member is made of a metal material. 前記第二伝動部材の前記振動吸収体は、ゴムから製作されることを特徴とする請求項１０に記載のボート用スクリュー。   The boat screw according to claim 10, wherein the vibration absorber of the second transmission member is made of rubber.
JP2017008049A 2016-01-27 2017-01-20 Two-stage shaft sleeve for screw for boat and screw for boat mounted with the same Pending JP2017132458A (en)

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