US3529564A - Boat drive - Google Patents

Boat drive Download PDF

Info

Publication number
US3529564A
US3529564A US762303A US3529564DA US3529564A US 3529564 A US3529564 A US 3529564A US 762303 A US762303 A US 762303A US 3529564D A US3529564D A US 3529564DA US 3529564 A US3529564 A US 3529564A
Authority
US
United States
Prior art keywords
boat
engine
drive
support plate
sealing
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.)
Expired - Lifetime
Application number
US762303A
Other languages
English (en)
Inventor
Bernhard Osswald
Josef Wilka
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Application granted granted Critical
Publication of US3529564A publication Critical patent/US3529564A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B63H20/02—Mounting of propulsion units
    • 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
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/22—Transmission between propulsion power unit and propulsion element allowing movement of the propulsion element about at least a horizontal axis without disconnection of the drive, e.g. using universal joints

Definitions

  • Patented Sept. 22; 1 970 Shoot BOAT muvs The present invention relates to a boat drive consisting of an inboard engine and of an outboard drive for a ships screw or propeller which are connected by a drive transmission extending through the boats stern and sealed with respect to the sea water whereby both the engine as well as the drive are secured at a support plate receiving the weight of the entire drive and arranged at the stern of the boat.
  • the engine is secured overhung at the support plate exclusively by means of ring-shaped rubber elements over a neck portion protruding from the engine.
  • this prior art boat drive entails various disadvantages which reside primarily in the double function of the rubber elements because, on the one hand, the rubber elements for the purpose of the bearing support of the engine, have to absorb the weight thereof as well as the movements, vibrations and the like so that, in order to preclude farreachingly the transmission of the movements of the engine to the boat body or hull, the engine support, i.e., the rubber elements have to be constructed relatively soft.
  • the large engine weight requires-in order to assure the alignment of the engine shaft with drive shaft of the boat driverelatively hard bearings which do not permit or permit at least only slight axial displacements.
  • a boat drive is known in the prior art in which both the driving engine as well as the drive for the ships screw are secured at the stern of the boat itself (US. Pat. No. 3,259,099).
  • the engine is thereby supported in three points on a support frame composed of three mutually independent securing parts which are threadably secured each by itself at the stern.
  • six assembly bores for the threaded connection of the individual parts of the framework have to be provided at the wooden stern of the boat by the construction personnel, i.e., by carpenters.
  • the present invention is concerned with the task to create an elastic bearing support of a boat drive in which the disadvantages of the prior art boat drives resulting both from the double function of the bearing and sealing elements as well as from the extensive adjusting operations are eliminated.
  • the present invention proposes that the engine, in an axis extending transversely of the boat at least approximately through the center of gravity of the engine, is supported by a frame means connected with the support plate means, and is further supported and centered in the supporting plate means by elastic means cooperating with a centering neck portion of the engine surrounding the output shaft thereof.
  • the elastic element is arranged within a seal serving the purpose of sealing the engine and the interior of the boat whereby upon destruction of this sea], the penetration of sea water into the interior of the boat is prevented also by the elastic element.
  • the essential advantages of the present invention reside in that by the special construction of the elastic three-point bearing support of the engine, there results simultaneously a completely satisfactory centering of the engine during the assembly and a damping of the vibrations and noises transmitted from the engine to the stern of the boat.
  • a further advantage of the present invention resides in that changes in the position of the engine and/or of the drive when the boat drive is in operation, which are caused by elastic yielding of the wood of the stern of the boat, as may occur with the drive according to US. Pat. No. 3,259,099, can have no effect on the position of the engine relative to the boat drive with the common securing and mounting of the engine and of the drive for the ships propeller at the metal support plate separate from the stern of the boat in accordance with the present invention.
  • FIG. 1 is a somewhat schematic side view, partly in cross section, of the stern of a boat with a boat drive installed into the same in accordance with the present invention
  • FIGS. 2 and 3 are partial cross-sectional views, on an enlarged scale, through two different embodiments illustrating the details of the parts located within the circle A of FIG. 1.
  • the boat drive according to the present invention consists essentially of an engine 2 arranged on the inside of the boat 1 and of an outboard gearing or drive 6 for a ship's propeller 7 operatively connected with the engine output shaft 3 by way of a joint 4 (FIGS. 2 and 3) which is sealed with respect to the sea water by a bellows 5. Both the engine 2 as also the drive 6 is thereby secured at a support plate 9 arranged at the stern 8 of the boat.
  • the engine 2 is thereby elastically supported in or approximately in an axis extending transversely of the boat through the center of gravity of the engine on a frame structure ll detachably connected with the support'plate 9 by means of bolts 10.
  • the support frame 11 is constructed in the embodi ment of the present invention illustrated in FIG. 1 of tubular or pipe construction.
  • the support frame and support plate can also be constructed as integral structural unit made of welded construction or of a unitary casting.
  • the latter is elastically supported by way of rubber elements 12 at the free ends of the support frame 11.
  • the centering of the engine 2 takes place by means of a center neck portion 13 flangedly connected to the engine 2 as well as a ring-shaped rubber element 14 arranged in the support plate 9.
  • the rubber element 14 is thereby retained in an annular gap formed by the outer surface 15 of the support plate 9, an annularly shaped extension 16 arranged at the support plate 9, as well as a securing disk 17 i threadably connected against the axially facing end surface of the extension 16.
  • the outer surface and the end face 21 of the securing disk 17 mayas illustrated, be parallel or conically inclined to one another.
  • the sealing means, illustrated in FIG. 2, of the engine 2 and of the interior of the boat with respect to the sea water as well as the sealing means of the joint 4 between the engine output shaft 3 and the drive 6 takes place by means of the bellows 5 which is in sealing connection at its end facing the engine 2 with the extension 16 so that the rubber element 14 serving for the centering of the engine, is arranged inside of the seal means, i.e., in the part of the boat drive sealed against the sea water and therefore does not have to carry out any scaling function. If, however, a destruction of the bellows 5 occurs, then the elastic rubber element 14 prevents the penetration of sea water into the interior of the boat.
  • the extension 16 is provided with an annular groove 18 into which engages a corresponding bead or bulge 19 of the bellows 5 whereby the bellows 5 is retained on the extension 16 by means of a clamping element 25.
  • the sealing of the engine 2 and of the interior of the boat also takes place by means of a bellows 5 serving for the sealing of the joint 4 between the engine output shaft 3 and the drive 6, as well as by means of a sealing surface 20 which is formed by the axial end surface of the extension 16 of the support plate 9 and by the end surface 21 of the securing disk 17 facing the support plate 9.
  • the end faces of the two parts 16 and 17 which contact one another at the sealing surface 20 are thereby ground flat for increasing the sealing effect or, in order to achieve a sufficient sealing effect, any appropriate, conventional sealing means may be arranged between these two surfaces.
  • the support plate 9 is threadably secured at the boats stern 8. Thereupon, the frame structure 11 is secured at the support plate 9 by means of the screws or bolts 10.
  • the support plate 9 represents a fixed, non-adjustable mount for the engine 2.
  • the support plate 9 serves also for the mounting and support of the drive 6. Since also the centering of the engine 2 takes place in the support plate 9, axial displacements or offsets between the engine output shaft 3 and the drive or input shaft of the drive 6 are precluded in every case both in the horizontal as well as in the vertical plane.
  • a boat drive which includes an engine disposed inboard and a drive for a ship's propeller disposed outboard, which are operatively connected with each other by a drive-transmitting means extending through the stern of the boat and sealed with respect to the sea water, in which both the engine as well as the propeller drive are secured on a support plate means receiving the weight of the entire drive and arranged at the stern of the boat, characterized in that the engine, in an axis extending transversely of the boat at least approximately through the center of gravity of the engine, is supported by a frame means connected with the support plate means. and is further supported and centered in the supporting plate means by elastic means cooperating with a centering neck portion of the engine surrounding the output shaft thereof.
  • a boat drive according to claim 2 further comprising seal means for sealing the interior of the boat, said elastic means being arranged within said seal means.
  • a boat drive according to claim 16 comprising further sealing means between the axial end face of the extension of the support plate means and the end face of the securing disk.
  • a boat drive according to claim 16 wherein one end of the bellows means is operatively connected with an axial flange of the securing disk, an annular groove being provided along the outer circumference of said axial flange into which engages a corresponding bulge of the bellows means, and clamping means for holding said bellows means on said axial flange.
  • a boat drive according to claim 18, comprising further sealing means between the axial end face of the extension of the support plate means and the end face of the securing disk.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Motor Or Generator Frames (AREA)
  • Gasket Seals (AREA)
US762303A 1967-09-16 1968-09-16 Boat drive Expired - Lifetime US3529564A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1531723 1967-09-16

Publications (1)

Publication Number Publication Date
US3529564A true US3529564A (en) 1970-09-22

Family

ID=5675535

Family Applications (1)

Application Number Title Priority Date Filing Date
US762303A Expired - Lifetime US3529564A (en) 1967-09-16 1968-09-16 Boat drive

Country Status (6)

Country Link
US (1) US3529564A (enrdf_load_stackoverflow)
CH (1) CH478022A (enrdf_load_stackoverflow)
FR (1) FR1579978A (enrdf_load_stackoverflow)
GB (1) GB1227184A (enrdf_load_stackoverflow)
NO (1) NO121134B (enrdf_load_stackoverflow)
SE (1) SE373084B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402158A1 (de) * 1973-01-22 1974-08-22 Brunswick Corp Motorhalterung
US3952687A (en) * 1973-11-15 1976-04-27 American Challenger Corporation Marine drive
USRE30122E (en) * 1973-11-15 1979-10-23 Internal Marine Combustion, Inc. Marine drive
US4370138A (en) * 1977-07-02 1983-01-25 Bayerische Motoren Werke A.G. Installation for supporting a boat engine installed inboard at a transom plate
US4501560A (en) * 1982-02-03 1985-02-26 Ab Volvo Penta Inboard outboard drive

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2402158A1 (de) * 1973-01-22 1974-08-22 Brunswick Corp Motorhalterung
US3865068A (en) * 1973-01-22 1975-02-11 Brunswick Corp Stern drive engine mount
US3952687A (en) * 1973-11-15 1976-04-27 American Challenger Corporation Marine drive
USRE30122E (en) * 1973-11-15 1979-10-23 Internal Marine Combustion, Inc. Marine drive
US4370138A (en) * 1977-07-02 1983-01-25 Bayerische Motoren Werke A.G. Installation for supporting a boat engine installed inboard at a transom plate
US4501560A (en) * 1982-02-03 1985-02-26 Ab Volvo Penta Inboard outboard drive

Also Published As

Publication number Publication date
FR1579978A (enrdf_load_stackoverflow) 1969-08-29
NO121134B (enrdf_load_stackoverflow) 1971-01-18
GB1227184A (enrdf_load_stackoverflow) 1971-04-07
CH478022A (de) 1969-09-15
SE373084B (enrdf_load_stackoverflow) 1975-01-27

Similar Documents

Publication Publication Date Title
US4360859A (en) Boat light having resiliently flexible and adjustable mount
US6287159B1 (en) Marine propulsion device with a compliant isolation mounting system
US3529564A (en) Boat drive
GB1582759A (en) Drive installation for boats
US20130260622A1 (en) Mount for a boat propulsion unit
US4543069A (en) Auxiliary propelling equipment mounting structure for sail boats
US4722707A (en) Transmission for small boat
US4936593A (en) Shaft seal
US6758707B2 (en) Propeller drive shaft mounting support unit for an inboard drive marine vessel and method of forming same
US7841290B1 (en) Marine shaftless external propulsor
US3709186A (en) Propelling means for motor boats and auxiliary sailing yachts
US3910068A (en) Joints between drive and driven shafts
US3834344A (en) Apparatus for mounting a marine engine
US3865068A (en) Stern drive engine mount
GB1409245A (en) Rudder arrangements for ships
JPH0262438B2 (enrdf_load_stackoverflow)
US1798596A (en) Propelling mechanism for boats
CA1251693A (en) Steering means for marine propulsion device
US4370138A (en) Installation for supporting a boat engine installed inboard at a transom plate
RU2721035C1 (ru) Подруливающее устройство для продвижения плавучего средства
US4354846A (en) Nonsteerable drive mechanism for a watercraft
US3062173A (en) Mounting for outboard motors
US4478585A (en) Inboard outboard drive and mounting shield therefor
CN212510033U (zh) 一种船用竖向双桥浮筏隔振管夹
US3327675A (en) Propeller mounting and steering mechanism