EP3199447A1 - Coussinet d'essieu en deux parties et hélice marine utilisant celui-ci - Google Patents

Coussinet d'essieu en deux parties et hélice marine utilisant celui-ci Download PDF

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Publication number
EP3199447A1
EP3199447A1 EP16169853.5A EP16169853A EP3199447A1 EP 3199447 A1 EP3199447 A1 EP 3199447A1 EP 16169853 A EP16169853 A EP 16169853A EP 3199447 A1 EP3199447 A1 EP 3199447A1
Authority
EP
European Patent Office
Prior art keywords
transmission member
transmission
longitudinal
axle bushing
piece axle
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.)
Withdrawn
Application number
EP16169853.5A
Other languages
German (de)
English (en)
Inventor
Yeun-Junn Lin
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.)
Solas Science & Engineering Co Ltd
Original Assignee
Solas Science & Engineering Co 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 Solas Science & Engineering Co Ltd filed Critical Solas Science & Engineering Co Ltd
Publication of EP3199447A1 publication Critical patent/EP3199447A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to marine propeller technology, and more particularly to a two-piece axle bushing and a marine propeller using this design of two-piece axle bushing.
  • a conventional marine propeller generally comprises a propeller hub, a plurality of propeller blades radially connected to the periphery of the propeller hub, and an axle bushing mounted in the propeller hub.
  • the engine transmits power to the axle bushing through a drive shaft, causing the axle bushing to rotate the propeller hub.
  • the propeller blades are rotated to create thrust in water.
  • axle bushings for marine propeller are generally made from a hard material (such as metal). If a marine propeller hits an external object during its operation, the axle bushing can become brittle, and may even cause damage to the drive shaft. If the axle bushing has become brittle, it can no longer drive the propeller hub to rotate smoothly, affecting power transmission effects. Further, if the drive shaft outputs a high torque, the axle bushing can become brittle. Therefore, conventional axle bushings are not suitable for use with a high horsepower engine.
  • Taiwan Patent M310175 discloses an axle bushing, which comprises a metal layer and a shock-absorbing layer fixedly surrounding the metal layer.
  • the axle bushing on the one hand, is connected to the drive shaft of the engine by the metal layer, and, on the other hand, fastened to the axle hole of the propeller hub by the shock-absorbing layer.
  • the shock-absorbing layer of the axle bushing absorbs shocks, avoiding embrittlement of the metal layer and protecting the drive shaft against damage.
  • the present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a two-piece axle bushing for marine propeller, which utilizes soft start-up to effectively reduce vibration in the moment the engine starts up, thereby enhancing marine propeller start-up stability and smoothness.
  • a two-piece axle bushing for marine propeller comprises a first transmission member and a second transmission member.
  • the first transmission member comprises an accommodation chamber, at least two longitudinal inner ribs equiangularly spaced around an inner perimeter of the accommodation chamber and radially projecting toward the inside of the accommodation chamber at a predetermined distance, and a buffer space defined inside the accommodation chamber between each two adjacent longitudinal inner ribs.
  • the second transmission member comprises a tube shaft and a shock absorber.
  • the tube shaft comprises a first transmission segment, and a second transmission segment connected to the first transmission segment.
  • the first transmission segment is inserted into the accommodation chamber of the first transmission member, comprising at least one longitudinal outer rib located at an outer perimeter thereof and respectively movably inserted into one respective buffer space of the first transmission member and selectively engageable with one longitudinal inner rib.
  • the shock absorber fixedly surrounds the outer perimeter of the second transmission segment.
  • the second transmission member will be driven to rotate by the drive shaft of the engine, and the first transmission member will be rotated with the second transmission member only after the longitudinal outer ribs of the tube shaft of the second transmission member have been put into engagement with the longitudinal inner ribs of the first transmission member.
  • the output torque of the engine can be transmitted to the marine propeller, causing the marine propeller to create thrust in water.
  • the two-piece axle bushing of the present invention can generate power hysteresis effects when the engine starts up, reducing vibration due to a sudden high torque and further enhancing start-up stability and smoothness of the marine propeller.
  • the two-piece axle bushing can absorb shocks if the marine propeller hits an external object accidentally, protecting the tube shaft of the second transmission member and the drive shaft of the engine against damage.
  • the two-piece axle bushing is mounted in the axle hole of the propeller hub for connection to a drive shaft of an engine.
  • the marine propeller 10 comprises a propeller hub 22, four propeller blades 30, and a two-piece axle bushing 40.
  • the propeller hub 20 comprises an axle hole 22 extended through opposing front and rear ends thereof.
  • the propeller blades 30 are equiangularly and radially extended from the outer perimeter of the propeller hub 20.
  • the two-piece axle bushing 40 is mounted in the axle hole 22 of the propeller hub 20, comprising a first transmission member 50 and a second transmission member 60, as shown in FIG. 3 .
  • the first transmission member 50 is made from metal.
  • the first transmission member 50 can be made from stainless steel; for use with a low horsepower engine, the first transmission member 50 can be made from aluminum alloy.
  • the first transmission member 50 comprises an accommodation chamber 52 and four longitudinal inner ribs 54. These four longitudinal inner ribs 54 are equiangularly spaced around an inner perimeter of the accommodation chamber 52 and radially projecting toward the inside of the accommodation chamber 52 at a predetermined distance such that a buffer space 56 is defined inside the accommodation chamber 52 between each two adjacent longitudinal inner ribs 54. Further, as shown in FIG. 6 , each longitudinal inner rib 54 comprises two first sloping surfaces 541 respectively located at two opposite sides thereof. Preferably, the first sloping surfaces 541 of each two adjacent longitudinal inner ribs 54 define therebetween a contained angle in the range of 21 ⁇ 25°. Further, the outer perimeter of the first transmission member 50 consists of multiple first planes 58 connected to one another so that the first transmission member 50 can be engaged with the peripheral wall of the axle hole 22 of the propeller hub 20 by the first planes 58.
  • the second transmission member 60 comprises a tube shaft 70.
  • the tube shaft 70 is made from metal.
  • the tube shaft 70 can be made from stainless steel; for use with a low horsepower engine, the tube shaft 70 can be made from aluminum alloy.
  • the tube shaft 70 comprises a first transmission segment 71, and a second transmission segment 72 connected to the first transmission segment 71.
  • the first transmission segment 71 of the tube shaft 70 is inserted into the accommodation chamber 52 of the first transmission member 50.
  • the second transmission member 60 further comprises a shock absorber 80 fixedly surrounding the second transmission segment 72 of the tube shaft 70, and an internal gear 73 formed integral with the inner perimeter of the second transmission segment 72 of the tube shaft 70 (see FIG. 4 and FIG. 5 ).
  • the internal gear 73 is meshed with a drive shaft (not shown) of an engine (not shown) so that the tube shaft 70 is rotatable by the drive shaft of the engine.
  • the tube shaft 70 further comprises four longitudinal outer ribs 74 and four bearing portions 75. These four longitudinal outer ribs 74 are equiangularly spaced around an inner perimeter of the first transmission segment 71 and radially projecting toward the outside of the first transmission segment 71 at a predetermined distance. Further, each longitudinal outer rib 74 comprises two second sloping surfaces 742 respectively located at two opposite sides thereof. The longitudinal outer ribs 74 of the tube shaft 70 are respectively engaged in the buffer spaces 56 inside the first transmission member 50.
  • each longitudinal outer rib 74 of the tube shaft 70 When the longitudinal outer ribs 74 of the tube shaft 70 are respectively engaged with one respective longitudinal inner rib 54 of the first transmission member 50, as shown in FIG. 7 , the second sloping surface 742 of each longitudinal outer rib 74 is abutted against one first sloping surface 541 of one respective longitudinal inner rib 54. At this time, the tube shaft 70 can drive the first transmission member 50 to rotate. As the bearing portions 75 extend radially from the outer perimeter of the second transmission segment 72 a predetermined distance, they assist the tube shaft 70 to bear an output torque from the drive shaft of the engine.
  • the shock absorber 80 of the second transmission member 60 is made from, but not limited to, rubber.
  • the shock absorber 80 fixedly surrounds the outer perimeter of the second transmission segment 72 of the tube shaft 70 over the bearing portions 75, and, the outer perimeter of the shock absorber 80 consists of multiple second planes 82 that are connected to one another and respectively disposed in line with the first planes 58 of the first transmission member 50 in a flush manner so that the shock absorber 80 can be engaged peripheral wall of the axle hole 22 of the propeller hub 20 by the second planes 82.
  • the drive shaft of the engine drives the second transmission member 60 to rotate.
  • the longitudinal outer ribs 74 of the second transmission member 60 are disposed in the respective buffer spaces 56 and not engaged with the longitudinal inner ribs 54 of the first transmission member 50, as shown in FIG. 6 , before engagement between the longitudinal outer ribs 74 of the second transmission member 60 and the longitudinal inner ribs 54 of the first transmission member 50, the first transmission member 50 and the propeller hub 20 are immovable.
  • the first transmission member 50 begins to rotate with the second transmission member 60.
  • the first transmission member 50 and the second transmission member 60 can then transfer the output torque of the engine to the propeller hub 20, causing the propeller blades 30 to rotate with the propeller hub 20 and to further generate a propelling force.
  • the shock absorber 80 that fixedly surrounds the outer perimeter of the second transmission segment 72 of the tube shaft 70 over the bearing portions 75 can absorb the shocks thus produced, preventing breaking of the metal tube shaft 70 due to excessively high vibration level and simultaneously giving good protection to the drive shaft. Further, by means of the bearing portions 75, the tube shaft 70 of the second transmission member 60 can bear the output torque of the drive shaft of the engine, and thus, the marine propeller 10 is practical for use with a high horsepower engine.
  • the two-piece axle bushing 40 can achieve a soft start-up effect to effectively reduce vibration of the marine propeller 10 in the moment the engine starts up, thereby enhancing start-up stability and smoothness of the marine propeller 10. Further, the two-piece axle bushing 40 not only can absorb shocks to protect the engine but also can bear a high torque for high horsepower application.

Landscapes

  • 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)
EP16169853.5A 2016-01-27 2016-05-17 Coussinet d'essieu en deux parties et hélice marine utilisant celui-ci Withdrawn EP3199447A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW105102518A TWI608962B (zh) 2016-01-27 2016-01-27 Double-piece shaft sleeve for marine propeller and marine propeller using the same

Publications (1)

Publication Number Publication Date
EP3199447A1 true EP3199447A1 (fr) 2017-08-02

Family

ID=56008519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16169853.5A Withdrawn EP3199447A1 (fr) 2016-01-27 2016-05-17 Coussinet d'essieu en deux parties et hélice marine utilisant celui-ci

Country Status (4)

Country Link
US (1) US20170210456A1 (fr)
EP (1) EP3199447A1 (fr)
JP (1) JP2017132458A (fr)
TW (1) TWI608962B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6895360B2 (ja) * 2017-10-13 2021-06-30 Nok株式会社 船外機用防振ブッシュ
USD894055S1 (en) * 2018-09-11 2020-08-25 Brunswick Corporation Shock absorbing hub assembly for supporting a propeller on a marine propulsion apparatus
TWI700215B (zh) * 2019-04-18 2020-08-01 般若科技股份有限公司 船用推進器
US12552512B2 (en) 2021-08-24 2026-02-17 Mastercraft Boat Company, Llc Propeller assembly for a boat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383042B1 (en) * 2000-04-11 2002-05-07 Bombardier Motor Corporation Of America Axial twist propeller hub
US6478543B1 (en) * 2001-02-12 2002-11-12 Brunswick Corporation Torque transmitting device for mounting a propeller to a propeller shaft of a marine propulsion system
US7086836B1 (en) * 2004-09-02 2006-08-08 Brunswick Corporation Dual rate torque transmitting device for a marine propeller
TWM310175U (en) 2006-10-23 2007-04-21 Solas Science & Engineering Co Boat propeller
US20110212657A1 (en) * 2010-02-26 2011-09-01 Yamaha Hatsudoki Kabushiki Kaisha Propeller unit for marine vessel propulsion device and marine vessel propulsion device including the same
EP2946999A1 (fr) * 2014-05-20 2015-11-25 Yamaha Hatsudoki Kabushiki Kaisha Hélice d'un appareil de propulsion de navire et appareil de propulsion de navire comprenant celle-ci

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235605A (en) * 1937-03-10 1941-03-18 Bugatti Ettore Screw propeller
US2164485A (en) * 1938-10-21 1939-07-04 Gen Motors Corp Slip clutch device
US4566855A (en) * 1981-08-28 1986-01-28 Costabile John J Shock absorbing clutch assembly for marine propeller
US4767278A (en) * 1981-10-06 1988-08-30 Enderlein Jr Emmanuel X Boat propeller
JP2789358B2 (ja) * 1989-09-26 1998-08-20 三信工業株式会社 船舶推進機用プロペラのダンパラバー組立体
JPH0456697A (ja) * 1990-06-25 1992-02-24 Suzuki Motor Corp 船舶用推進機のプロペラ取付構造
WO1996005101A1 (fr) * 1994-08-16 1996-02-22 Spi (R & D) Pty. Ltd. Ensemble de montage pour helices
US6322407B1 (en) * 1998-12-11 2001-11-27 Sanshin Kogyo Kabushiki Kaisha Marine drive transmission
US6471481B2 (en) * 2001-01-02 2002-10-29 Turning Point Propellers, Inc. Hub assembly for marine propeller
JP3133929U (ja) * 2006-10-23 2007-07-26 般若科技股▲分▼有限公司 船舶用推進器のプロペラ
JP2012159196A (ja) * 2012-03-26 2012-08-23 Yamaha Motor Co Ltd 船外機
JP2014019341A (ja) * 2012-07-19 2014-02-03 Yamaha Motor Co Ltd 船舶推進装置用のダンパユニット、船舶推進装置用のプロペラ、および船舶推進装置
JP5979018B2 (ja) * 2013-01-22 2016-08-24 ヤマハ発動機株式会社 プロペラユニット及びプロペラユニット用衝撃吸収部材
CN204647042U (zh) * 2015-01-28 2015-09-16 金余和 一种减震缓冲轴

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6383042B1 (en) * 2000-04-11 2002-05-07 Bombardier Motor Corporation Of America Axial twist propeller hub
US6478543B1 (en) * 2001-02-12 2002-11-12 Brunswick Corporation Torque transmitting device for mounting a propeller to a propeller shaft of a marine propulsion system
US7086836B1 (en) * 2004-09-02 2006-08-08 Brunswick Corporation Dual rate torque transmitting device for a marine propeller
TWM310175U (en) 2006-10-23 2007-04-21 Solas Science & Engineering Co Boat propeller
US20110212657A1 (en) * 2010-02-26 2011-09-01 Yamaha Hatsudoki Kabushiki Kaisha Propeller unit for marine vessel propulsion device and marine vessel propulsion device including the same
EP2946999A1 (fr) * 2014-05-20 2015-11-25 Yamaha Hatsudoki Kabushiki Kaisha Hélice d'un appareil de propulsion de navire et appareil de propulsion de navire comprenant celle-ci

Also Published As

Publication number Publication date
TW201726493A (zh) 2017-08-01
JP2017132458A (ja) 2017-08-03
US20170210456A1 (en) 2017-07-27
TWI608962B (zh) 2017-12-21

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