JPS599398B2 - ship propulsion system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to a propulsion system for a ship, and more particularly to a propulsion system for a ship that is fixedly attached to a ship's hull, such as the hull of a sailboat.

The present invention also relates to the mounting of such a propulsion device on a ship's hull.

The invention also relates to structures such as those described in U.S. Patent Application No. 4,824,68.

For an understanding of the present invention, reference is made to U.S. Pat. No. 3,194,205, issued July 13, 1965, and U.S. Pat.

The present invention includes a lower unit supported by the hull and extending through an opening in the bottom of the hull and including a mounting flange extending through the opening in the bottom of the hull;
a clamping member including an annular portion bounding a central opening positioned within the opening in the hull and through which the lower unit extends; and a flange portion extending outwardly from the annular portion; a resilient member including an annular sealing portion having an endless surface bounding a central aperture located at the sealing portion and a plurality of angularly spaced extensions projecting from the sealing portion to form a resilient mounting portion; The present invention provides a propulsion device for a ship, which includes means for positioning an annular portion of an elastic member between a mounting flange of a lower unit and a flange portion of a clamping member and fixing the clamping member to the mounting flange.

The present invention also provides a mounting plate adapted to be secured in watertight relation to the bottom of the hull and having an endless surface bounding the opening and an edge extending from the endless surface; a resilient member having an annular sealing portion including a surface and a plurality of angularly spaced extensions projecting outwardly from the annular sealing portion to form a resilient mounting portion and positioned within a central opening of the resilient member; a clamping member having an annular portion bounding the central opening and a flange portion extending outwardly from the annular portion; a lower unit extending through the central opening of the clamping member and having a mounting flange; and an annular sealing portion of the resilient member. between the mounting plate and at least one of the mounting flange of the lower unit and the fastening member to thereby seal between the lower unit and the mounting plate, and the extension portion is positioned at the edge of the central opening of the mounting plate. and means for securing the clamping member to the mounting flange in a manner positioned between the mounting flange of the lower unit and one of the flanges of the clamping member to support the lower unit and insulate the clamping member from vibration from the mounting plate. The present invention provides a ship propulsion system consisting of:

The invention further provides a hull including a bottom having an endless surface bounding the opening and an edge extending from the endless surface;
a resilient member having an annular sealing portion including an endless surface bounding a central opening and a plurality of angularly spaced extensions projecting outwardly from the annular sealing portion to form a resilient mounting; a clamping member including an annular portion positioned within and bounding the central opening of the resilient member and a flange portion extending outwardly from the annular portion; and a lower unit extending through the opening of the clamping member and including a mounting flange. , an annular sealing portion of the elastic member is positioned between the bottom of the hull and at least one of the lower unit and the fastening member to provide a watertight seal between the lower unit and the hull, and the extension portion is positioned between the bottom of the hull and at least one of the lower unit and the fastening member; and means for fixing the clamping member to the mounting flange in a manner that is positioned between the mounting flange of the lower unit and at least one of the flange of the clamping member to support the lower unit and isolate vibration from the hull. It provides a ship consisting of:

In one embodiment of the invention, the vessel further includes a mounting plate including an endless surface secured to the edge of the opening in the bottom of the hull and bounding the central opening, and an edge extending from the central opening of the mounting plate. The mounting plate includes a mounting plate in which the resilient member engages to form a partially watertight seal and to support and vibrationally isolate the lower unit from the hull.

In one embodiment of the invention, the sealing portion of the resilient member has greater resilience than the extension.

In one embodiment of the present invention, the annular portion of the elastic member has opposed upper and lower surfaces, an endless inner surface that extends between the upper and lower surfaces and bounds the central opening, and an endless inner surface that extends between the upper and lower surfaces and defines the bottom of the ship between the upper and lower surfaces. and an endless outer surface including four annular portions that accommodate the edges of the opening.

In one embodiment of the present invention, the annular portion of the elastic member includes a front end portion, a rear end portion, and left and right side portions extending between the front and rear ends, and the plurality of extension portions are formed on the annular portion of the elastic member. It includes a first extension part projecting from one of the front and rear ends and a plurality of extension parts respectively projecting from the left and right side parts of the annular member near the other of the front and rear ends.

In one embodiment of the invention, the fastening means comprises a plurality of bolts extending through the mounting flange of the clamping member and into the annular portion.

One feature of the invention is to provide a mounting device for a ship's propulsion system that extends through an opening in the bottom of the ship;
The mounting system supports the propulsion system, vibrationally isolating it from the hull and forms a seal that prevents water from entering the hull through the mounting system.

Another feature of the invention is that it supports cooperatively with other parts;
It is an object of the present invention to provide a mounting device as described above that includes an integrally constructed elastic member that provides vibration isolation and sealing.

Another feature of the present invention is to provide a sealing portion made of an elastic material and an elastic member extending from the sealing portion that is softer or more flexible.

Another feature of the invention includes a ship's propulsion system extending through an opening in the bottom of the ship, the propulsion system then acting to vibrationally isolate the ship's hull and passing through a mounting device to the ship's hull. It is an object of the present invention to provide a ship supported by resilient members forming a watertight seal to prevent water from entering.

Other features and advantages of embodiments of the invention will be understood from the following description with reference to the accompanying drawings.

Before describing specific embodiments of the invention in detail, it is to be understood that the invention is not limited in its application to only the details of construction and arrangement of parts that are set forth in the following detailed description or illustrated in the accompanying drawings. There is a need.

The invention is capable of other embodiments and of being carried out in various other ways.

It is also to be understood that the terms used are descriptive and not limiting.

In the drawing, a hull 11 is shown in which a marine propulsion device 13 is installed, which projects through an opening 15 provided in the bottom 17 of the hull 11.

In general, the marine propulsion system 13 may be of various types, but in the illustrated construction the marine propulsion system 13 is modified to include an outer housing 21 supporting a propeller shaft 23 supporting a propeller 25. It includes a worn outboard motor lower unit 19.

The outer housing 21 also supports an internally located drive shaft 27 connected to the propeller shaft 23 by suitable bearings 29.

Furthermore, the drive shaft 27 is also connected to an engine 31 which is rigidly connected to the top of the lower unit 19.

The outer housing 21 also includes an annularly or circumferentially extending mounting flange 33.

Once the housing is installed, the lower unit 19 is rigidly connected to the hull 11 as previously described.

Means are provided for resiliently mounting the lower unit 19 to the hull 11 so as to substantially vibrationally isolate the hull 11 from the engine and the lower unit and at the same time to prevent water from entering the hull 11 through the mounting arrangement.

As previously mentioned, such attachment means include an opening 15 provided in the bottom 17 of the hull 11, which opening 15 is preferably oblong in shape.

Preferably, a ring member or mounting plate 35 is connected to the edge of the opening 15, and the ring member is suitably secured to the hull 11 to prevent water from entering between the ring member and the hull. .

The ring member or mounting plate 35 has an oval central opening 37.
It is preferably made of aluminum and includes an endless inner surface 36 bounding the inner surface 36 .

Various structures can be used to attach ring member 35 to hull 11.

In the illustrated construction, the bottom of the hull 11 is made of fiberglass and the ring member 15 is attached to the bottom 11 of the hull by means of a fiber-impregnated resin 39 that is incorporated into the hull 11.

One or more through bolts (not shown) may also be used to securely connect the CIJing member or mounting plate 35 to the hull 11.

If desired, the hull opening 15 can also be modified as long as this opening 15 is sufficiently smooth and of suitable dimensions.
The ring member 35 may be omitted as long as the edges around 5 have sufficient strength to adequately support the weight of the ship's propulsion equipment and to receive the thrust generated by this equipment.

In any case, the opening in the ring member 35 can be considered as an opening in the bottom of the hull.

The attachment means also includes an annular member 41 made of an elastic material such as rubber.
The annular member forms a seal and also serves to resiliently mount the lower unit 19 to the hull 11.

Although various configurations are possible, in the illustrated configuration, the annular member 4
1 has upper and lower surfaces 45, 41, and upper and lower surfaces 45. 47 and forming an oblong opening 51; and an endless outer surface 53 extending between the upper and lower surfaces 45, 47 and including a recess preferably in the shape of an annular groove 55. Groove 55
is preferably centered between the upper and lower surfaces 45, 47 and accommodates the edge of the central opening 31 of the ring member 35.

It supports the ship's propulsion system 13 and also connects it to the ship's hull 11.
The annular member 41 also includes a plurality of integral mounting butts or mounts which project outwardly from the annular portion 43, in the illustrated example there are three of these pads and the lower unit. 19 and are angularly spaced around the annular portion 43 to provide vibrational isolation from the hull 11.

Thus, in the illustrated configuration, the annular member 41 has a first extension or attachment portion 61 forming a mounting and insulating pad at its front end and two portions positioned on the left and right sides of the annular member near the rear of the annular member 41. two laterally oppositely projecting extensions or mounting portions 63 . 65.

The attachment means also included a tightening ring or member γ1, which ring has an annular portion 73 having an inner surface 75 forming an oblong opening through which the lower unit 19 projects and a radially outwardly facing outer surface 71. Contains.

Clamping member or ring 71 also includes a flange portion 79 extending radially outwardly from the bottom of annular portion 73 and having an upwardly facing surface 81 .

The attachment means also includes a clamping member γ1 in the lower unit such that the annular member 41 engages the clamping member 71 and/or the inner surface 36 and the periphery of the opening 37 of the mounting plate 35 to form a watertight seal. Also included are means for securing to the mounting plate flange 33.

In the illustrated construction, such fastening means are formed by a plurality of mounting bolts 83 extending through the lower unit mounting flange 33 and into the upper part of the annular portion 73 of the clamping member 71.

Thus, when assembled, the extension or mounting portion 61.6
3.65 supports the weight of the ship's propulsion device between the upper surface around the opening of the mounting plate 35 and the lower surface of the mounting flange 33, and protrudes so as to substantially insulate the lower unit 19 from the hull 11.

Although a single annular elastic member can be used to perform the sealing, weight-bearing and vibration isolation functions in a variety of ways, the annular portion 43 of the annular member 41 performing the sealing function is more effective than the extension or mounting portion 61, 63, 65. It is preferable to have an elastic or soft C so that the weight transmission occurs primarily in the mounting portion 61, 63, 65 and not in the annular portion 43 of the annular member 41.

For example, the annular member 41 has an extension or mounting portion 61
, 63, 65 are made of a different composition than the annular portion 43, the weight support and vibration isolation functions are primarily performed by the mounting portion, and the annular portion 43 of the annular member 41 is made of a composition different from that of the annular portion 43, and the annular portion 43 of the annular member 41 is made of a composition different from that of the annular portion 43. It can be made to perform a sealing action.

Alternatively, the annular member 41 may be configured such that the sealing occurs primarily in the plane between the outer surface 77 of the clamping member γ1 and the inner surface 36 bounding the opening 37 of the mounting plate 35 and that the only engagement of the annular member 41 in the vertical direction is The mounting parts 61, 63, 65 between the parts 61, 63, 65 and the mounting plate 35, the lower surfaces of the mounting flange 33 of the lower unit 19, and the tightening member 71
The physical structure can be such that there is a gap between the upper surfaces of the flange portions 79 of the flange portions 79 from one side to the other.

Alternatively, the annular member 41 can be arranged to provide a tight elastic fit between the inner surface 49 that engages the clamping member 71 and the outer surface 53 that engages the mounting plate 35, the inner and outer surfaces being vertical or transverse. A plurality of extensions or mountings 6L 63.65, connected to each other by directionally unsupportable intermediate, annular or diaphragm portions (not shown), support the ship's propulsion mounting 13 and generally isolate the hull 11 from the propulsion device 13. Extending from the inner and outer surfaces 49, 53 and 53 for vibration isolation.

It is believed that it is within the skill of the art to construct the mountings 61, 63, 65 to perform this desired function.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing a boat propulsion device equipped with various features of the present invention mounted on a ship hull, and FIG. 2 is a perspective view of one component of the mounting device shown in FIG. 1. 11...hull, 13...propulsion device, 1
5...Opening of the hull, 17...Bottom, 19
...Lower unit, 33...Mounting flange, 35...Mounting plate, 36...Endless surface of mounting plate, 37... Mounting plate opening, 41
......Elastic member, 43... Sealing part, 4
9... Endless surface of the sealed part, 51...
・Central opening, 61, 63.65...Extension part, 7
1... Tightening member, 73... Annular portion, 79... Flag/ji portion, 83... Fixing means.

Claims (1)

[Scope of Claims] 1. A mounting plate adapted to be fixed in watertight relation to the bottom of a ship and having an endless surface bounding an opening and an edge extending from this surface; a resilient member comprising an annular sealing portion having an endless surface and a plurality of angularly spaced extensions projecting outwardly from the annular sealing portion to form a resilient mounting portion; a center of the resilient member; a fastening member including an annular portion positioned within the aperture and bounding the central aperture and a flange portion extending outwardly from the annular portion; a lower boat propulsion unit extending through the aperture of the fastening member and including a mounting flange; positioning the annular sealing portion of the elastic member between the mounting plate and at least one of the mounting flange and the clamping member of the lower unit; The lower unit and the mounting plate are watertightly sealed by watertightly sealing the space between the lower unit and the mounting plate, and the extension portion is provided between the edge of the opening of the mounting plate, the mounting flange of the lower unit, and one of the flanges of the tightening member. a means for firmly attaching a clamping member to a mounting flange in a manner that positions and supports the lower unit and isolates vibration from the mounting plate. 2. A hull including a bottom having an endless surface bounding an opening and an edge extending from the endless surface, an annular sealing part including an endless surface bounding a central opening, and projecting outwardly from the annular sealing part; a resilient member comprising a plurality of angularly spaced extensions forming a resilient mounting; an annular portion positioned within and bounding the central aperture of the resilient member; and an annular portion extending outwardly from the annular portion; a clamping member including a flange portion extending therethrough; a lower ship propulsion unit extending through a central aperture of the clamping member and including a mounting flange; and an annular sealing portion of the resilient member connecting the bottom of the hull and the mounting flange of the lower unit and the clamping member; the extension portion between the opening of the hull and one of the mounting flange of the lower unit and the flange of the tightening member; means for securing the clamping member to the mounting flange in a manner positioned between the lower unit and supporting the lower unit and vibrationally isolating it from the hull. 3 A ship's propulsion system supported by a ship's hull and adapted to extend through an opening in the bottom of the ship's hull, the ship's propulsion unit being a lower ship's propulsion unit extending through the opening in the ship's hull and including a mounting flange; a fastening member including an annular portion bounding a central opening positioned within and through which the lower unit extends; and a flange portion extending outwardly from the annular portion;
an annular sealing portion having an endless surface bounding a central aperture positioned outwardly of the annular portion of the clamping member; and a plurality of angularly spaced apart portions projecting from the annular sealing portion to form a resilient mounting portion. an elastic member including an extension portion;
means for positioning an annular sealing portion between a mounting flange of the lower unit and a flange portion of the clamping member to secure the clamping member to the mounting flange.