JPS6233118B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the attachment of a ship's propulsion system to a ship's hull.

When installing the ship's propulsion system on the hull,
Intrusion of water into the hull between the hull and the propulsion system attached to it is a problem, especially when installing a new propulsion system on a hull such as a sailing vessel that was not designed to have a propulsion system installed in advance. In some cases, this becomes an important issue.

Further, it is desirable from the viewpoint of hull strength or ride comfort to prevent engine vibrations from being transmitted to the hull as much as possible.

However, no design has been made to solve these problems at the same time.

Therefore, an object of the present invention is to be able to be more easily attached to a ship's hull, to reliably prevent water from entering through the attachment part between the ship's hull and the propulsion system, and to effectively protect the ship's hull from engine vibrations. An object of the present invention is to provide a boat with a propulsion device designed to prevent the above.

In order to achieve such an object, in the present invention, a boat with a propulsion device is configured as follows.

That is, the boat with a propulsion device of the present invention comprises a hull having a hole in the bottom, a propulsion device having a power head and a lower unit, and the lower unit extends through the hole and drains water. An element for propelling the hull is rotatably supported through the shaft. Above the bottom of the hull, a support is provided adjacent to the hole in the bottom and has a tubular member and a mounting surface that are watertightly connected to the hull, and the support is watertightly connected to the mounting surface of the support. A mounting bracket having a fixed portion and an endless mounting member made of an elastic material and watertightly supported by the mounting bracket and having an upper surface and a lower surface are provided, and the power head and the lower unit can be removably fixed to each other. The power head further includes a lower end portion having a downwardly facing surface that watertightly engages the upper surface of the mounting member, while the lower unit has an upwardly facing surface that watertightly engages the lower surface of the mounting member. The power head and the lower unit are connected to each other with the mounting member interposed therebetween.

As described above, according to the present invention, the tubular member is watertightly connected to the hull to prevent water from entering the hull, and the bracket has a portion that is watertightly fixed to the mounting surface of the support. The bracket watertightly supports an endless mounting member made of an elastic material, and the power head and lower unit are connected with the mounting member sandwiched between them. It is also possible to prevent water from entering the hull from outside, and as a result, it is possible to reliably prevent water from entering the hull from outside the boat as a whole.

Furthermore, in the present invention, the power head is formed with a lower end portion having a downward surface that engages with the upper surface of the mounting member, while the lower unit is formed with an upper portion that has an upward surface that engages with the lower surface of the mounting member. Since the power head and the lower unit can be connected to each other with the mounting member interposed therebetween, and the propulsion device is attached to the hull via this mounting member, the hull is connected to the propulsion device, especially the power head. This makes it possible to effectively insulate from vibrations.

Next, the present invention will be explained in detail based on illustrated embodiments.

The drawing shows a marine propulsion system 11 installed in the hull 13 of a vessel, such as a sailboat. Ship propulsion system 1
1 comprises a propulsion unit 15 including a power head 17 of optional conventional construction, and a lower part rotatably supporting an element or propeller 23 extending through a hole in the bottom 21 of the hull and adapted to propel the ship through the water. It comprises a unit 19 and an adapter 25 fixed to the lower unit 19 and the power head 17 and disposed between them. Although the power head 17 and the adapter 25 are provided separately in the illustrated embodiment, it will be appreciated by those skilled in the art that the adapter 25 can be formed integrally with the power head, making it a part of the power head. It can be easily understood. Furthermore, the hull 13 has a support 2 integral therewith and surrounding a hole provided in the bottom 21 of the hull.
7 is provided. The support body 27 supports the bracket 31 in a fixed manner. This bracket cooperates with an annular mounting ring or endless mounting member 33 that engages the propulsion unit 15.
is supported on the hull 13 and provides vibration isolation therefrom and forms a seal to prevent water from entering the hull.

The support 27 can be formed as an integral part of the hull 13 during construction of the hull 13 or formed into an existing hull. Although the above explanation has taken as an example the case where the support body is installed on an existing hull, it is clear that this explanation can be easily applied to the case where the support body 27 is provided when the hull 13 is first manufactured.

For example, when assembling the support 27 into the hull 13, which can be made of fiberglass, first the hull 1
A hole through which the lower end of the propulsion unit 15 can pass is formed in the bottom part 21 of 3 by any suitable method. A mounting collar 41 with a lower part is then inserted through the hole. The tubular member 43 forming the lower portion of the collar 41 is generally tubular, but may also be cylindrical or have an oval or rectangular cross section. The mounting collar 41 also includes an upper mounting flange 45 extending outwardly from the upper end of the tubular member 43 above the bottom 21 of the hull. The flange 45 is then temporarily supported so that it is positioned substantially horizontally when the hull 13 is stationary in the water. When positioned in this manner, the support member 47 is formed to fit between the flange 45 of the collar 41 and the inner surface of the bottom 21 of the hull 13, thereby firmly supporting the flange 45 to the hull 13. Collar 41 is preferably made of fiberglass or similar plastic. If desired, the flange can be reinforced with washers (not shown) made of wood or other suitable material.

Any suitable number of support members 47 may be positioned in circumferentially spaced relationship around tubular member 43 of collar 41. Support member 47 may be made of plywood or other suitable material.

Hull 13, mounting collar 41, and support member 47
The assembly is then preferably bonded together by fiberglass attached to the flange 45 of the collar 41, the support member 47, and the hull 13 to form a unitary structure. The support 27 may be formed in a cylindrical shape, with a series of bolts and associated nuts positioned between the support members 47 for assembling a mounting bracket 31 to the top of the support. Preferably, the recesses 49 are spaced apart in the circumferential direction.

In order to prevent water from entering the hull 13 between the bottom 21 and the tubular member 43 of the collar 41, and also to strengthen the support 27, fiberglass or other suitable material 48 is placed around the edges of the holes in the bottom 21. and the lower end of the collar 41 and between them.

The lower end of the tubular member 43 of the collar 41 is connected to the bottom 21
It can be cut to match the shape of the However, in order to allow water to flow smoothly past the lower unit 19 near the bottom 21 of the hull 13, the lower end of the collar 41 is preferably formed with an inwardly curved flange 51. The flange extends slightly below and inside the flange portion 53 of the lower unit 19 when the propulsion device is fully installed. Furthermore, fiberglass or other suitable material 4
8 can be raised between the hull 13 and the lower end of the tubular member 43 of the collar 41 to form a somewhat continuous and smooth surface between the lower end of the collar 41 and the bottom 21 of the hull 13. The tubular member 43 of the collar 41 is of sufficient vertical height to allow installation on a ship's hull having a stern section with sections extending at various angles.

Mounting plate or bracket 31 is preferably made of metal and includes a radially outer ring portion 57 that seats on the top mounting surface of support 27.
A plurality of spaced apart bolt-and-nut type connection means 61 extend through outer ring portion 57 and flange 45 to securely connect bracket 31 to support 27. As previously mentioned, the lower end of the connecting means 61 extends into the recess 49 between the support members 47. Any suitable means can be used to provide a watertight connection between the mounting bracket 31 and the hull 13.

Mounting bracket 31 also includes an inner ring portion 63 which preferably has a generally continuously extending enlarged beat 65. Mounting bracket 3
The inner and outer ring portions 63 and 57 of bracket 1 can be coplanar or offset relative to each other; in the illustrated construction, inner ring portion 63 of bracket 31 is lower than outer ring portion 57 thereof. It has been shifted to

The annular mounting ring 33 is made of rubber or other suitable material that provides vibration isolation and water tightness. More specifically, the annular mounting ring 33
is a peripheral groove 7 which is enlarged at its radially inner end to watertightly accommodate the inner ring portion 63 and enlarged bead 65 of the bracket 31 to form a watertight seal.
Contains 1. The annular mounting ring 33 also includes upper and lower surfaces 73, 75 positioned above and below the peripheral groove 71, respectively, and a slightly inwardly recessed surface 77. Although the illustrated annular mounting ring 33 is generally an endless mounting member with an endless structure, the ring may also be a split ring.

The lower end of the adapter 25 includes a downwardly facing surface 85 for releasably attaching to the upper end of the lower unit 19 by suitable means such as a plurality of bolt-and-nut type connection means 83, which surface 85 allows the propulsion device to be fully installed. The upper surface 7 of the mounting ring 33
3. The upper portion of the lower unit, on the other hand, is formed with an upwardly facing surface 81 which engages the lower surface of the mounting ring. When fully assembled, the annular mounting ring 33 is somewhat compressed between the upward and downward facing surfaces 81, 85, creating a watertight seal between the propulsion unit 15 and the mounting ring 33 and between the mounting ring 33 and the mounting bracket 31. form. However, such compression does not adversely affect the ability of mounting ring 33 to support propulsion unit 15 in a vibrationally isolated manner from mounting bracket 31.

A drive shaft 91 extends through the adapter 25 into the lower unit 19 and is driven by the power head 17 and connected to the propeller shaft 9 via a suitable bearing 93 in the lower unit 19.
5, this propeller shaft supports a propulsion element or propeller 23.

Means are provided to prevent relative rotation between propulsion unit 15 and mounting bracket 31. That is, a means for preventing relative rotation between the propulsion unit 15 and the mounting ring 33 is provided between the mounting ring 33 and the upper end of the lower unit 19 and at least one of the adapters 25. In the illustrated construction, the annular mounting ring 33 has a plurality of angularly spaced ears received in corresponding recesses 99 in the upper surface 81 of the lower unit 19 and the lower surface 85 of the adapter 25, respectively. Protrusion 9
Contains 7. If desired, these surfaces 8
It is also possible to provide recesses in the mounting ring 33 with ears at 1,85. Additionally, mating ears 82 and cavities 84 are provided on mounting ring 33 and mounting bracket 31, respectively, to prevent relative rotation between the mounting ring and mounting bracket. Therefore, the lower unit 19 is attached to the hull 13.
A separate rudder (not shown) is used for steering control, which is relatively fixed to the steering wheel.

During installation of the propulsion unit 15 on the hull, the mounting bracket 31 is operated either before the annular mounting ring 33 is manipulated to engage its bead 65 and inner ring portion 63 into the recess 71 of the annular mounting ring 33. After operation, it is bolted or otherwise attached to the support 27. Thereafter, the adapter 25 is seated on the mounting ring 33, and the lower unit 19 is temporarily supported below the mounting ring 33, and the bolt and nut type connecting means 83 is used to connect the mounting ring to the lower unit 19.
It can be held between the upward facing surface 81 and the downward facing surface of the adapter 25. The use of a mounting ring 33 having a surface 77 eliminates the risk that a portion of the annular resilient mounting ring 33 may become trapped between the corresponding surfaces of the adapter 25 and the lower unit 19 when the bolt-and-nut connection means 83 is tightened. lose.

If desired, annular mounting ring 33 can also include an inwardly extending gasket or seal (not shown) adapted to extend between the corresponding surfaces of adapter 25 and lower unit 19.

After adapter 25 and lower unit 9 have been assembled as described above, power head 17 is connected to adapter 25 by any suitable means, such as a plurality of bolt and nut type connection means 98.

In addition to the downwardly facing surface 85 of the adapter 25 and the upwardly facing surface 81 of the lower unit 19, any suitable structure may be used, such as those described in U.S. Pat.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a boat with a propulsion device equipped with various features of the present invention, FIG. 2 is an enlarged partially cutaway perspective view of the boat shown in FIG. 1, and FIG. 3 is a view similar to that shown in FIG. FIG. 3 is a perspective, partially cut away, cross-sectional view of the mounting ring of the boat shown in FIGS. 11... Propulsion device, 13... Hull, 19... Lower unit, 21... Bottom, 25... Adapter,
27...Support, 31...Bracket, 33...
Endless mounting member, 41... collar, 45... flange, 47... support member, 48... sealing means.

Claims (1)

[Claims] 1 Comprising a hull with a hole in the bottom and a propulsion device with a power head and a lower unit,
In a boat with a propulsion device, the lower unit extends through the hole and is adapted to rotatably support an element for propelling the hull through the water, the lower unit being provided adjacent to the hole and being arranged in the hull. a support having a tubular member and a mounting surface that is watertightly connected to the bottom of the hull; a mounting bracket having a portion that is watertightly fixed to the mounting surface of the support; an endless mounting member made of an elastic material supported in a watertight manner and having an upper surface and a lower surface, the power head and the lower unit being removably secured to each other; a lower end having a downwardly facing surface that watertightly engages the upper surface, while the lower unit has an upper portion having an upwardly facing surface that watertightly engages the lower surface of the mounting member, thereby connecting the power head and the lower portion. A boat with a propulsion device, characterized in that the units are configured so that they can be connected to each other with the mounting member interposed therebetween.