JP2005280626A - Water vehicle propulsion machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a propulsion device by detachably attaching a propulsion device in addition to the conventional way of enjoying and playing with a board using the natural force of riding on the water like a surfboard or a windsurfboard and performing surfing and windsurfing We want to make it possible to move to nearby places, play on water, and expand the use of multiple boards.
A propulsion unit for a small water vehicle that is detachably attached to a board having a buoyancy suitable for surfing by means of a mounting mechanism. The propulsion unit 1 has a main body 2 that is detachable from boards 40, 40, and a main body. A mounting portion 7 having a substantially vertical surface provided at the rear portion, and a propulsion portion 30 mounted on the mounting portion at the rear portion of the main body, wherein the detachable main body of the propulsion unit includes a plurality of boards corresponding to at least a plurality of boards. A mounting mechanism including mounting portions 8 is provided.
[Selection] Figure 1

Description

  The present invention relates to a propulsion device that is detachably attached to a small water vehicle such as a surfboard or a windsurfboard, and that allows the surfboard or the like to be stably propelled by a propulsion unit.

Surfers and windsurfers are riders on the board, and the basic maneuvers are performed by balancing, and are extremely small water vehicles for play and sports.
Surfboarding and windsurfing with surfboards can only be enjoyed under water conditions (weather conditions) that are convenient for surfing.
By the way, the surfboard is usually not equipped with a propulsion device, and is operated by surfing in a standing position.
However, a surfboard of a type provided with a propulsion device is proposed, and a surfboard provided with this propulsion device is known from Patent Document 1.

Published Utility Model 1-95499

In Patent Document 1, an engine is installed in a surfboard sideways, and propelled by driving a jet pump type screw or impeller provided in the rear part of the surfboard.
In Patent Document 1, since the engine and screw clew are installed inside a plate-shaped surfboard, the whole is increased in size and weight, and the use of the surfboard is only a vehicle that is propelled by a propulsion device. You can't enjoy surfing that is a vehicle play.
Moreover, it will become a surf boat with a propulsion machine, and will become very expensive though it is a surfboard.
Even in the surfboard of Patent Document 1, the basic maneuvering is performed by balancing, and it is not possible to enjoy the water surface conditions (weather conditions) convenient for surfing.

In addition to the above, power-operated wave riding plates have also been proposed.
Japanese Examined Patent Publication No. 4-878

In Patent Document 2, a portion projecting upward is provided at the rear part of the wave riding plate, covered with a cover, an engine is built inside, and thrust is obtained with a jet propulsion structure.
This power-operated wave riding plate has a structure in which the engine protrudes behind the wave riding plate and the rear part stands up, and the engine and the jet propulsion unit are fixed to the board.

  The present invention rides a board on the water like a surfboard or windsurfing, and in addition to the conventional way of enjoying and playing with the board using the natural power of surfing and windsurfing, the propulsion machine is detachably attached to the propulsion machine It is possible to move to the near field by propulsion, play on the water, expand the range of use of the board by juxtaposing multiple boards, and further separate the board and the propulsion unit by attaching and detaching the propulsion unit as an attachment, It is an object to be able to be decomposed.

  The invention according to claim 1 is a small water vehicle propulsion device that is detachably attached to a board having a buoyancy suitable for wave riding by a mounting mechanism, and the propulsion device includes a main body that is detachable from the board; A mounting portion having a substantially vertical surface provided at a rear portion of the main body, and a propulsion portion mounted on the mounting portion at the rear portion of the main body, wherein the removable main body of the propulsion unit corresponds to at least a plurality of boards. A mounting mechanism comprising a plurality of mounting portions is provided.

  According to a second aspect of the present invention, in the first aspect, the propulsion device main body includes a base portion of the intermediate portion, side portions disposed on both sides thereof, and supporting side portions that are attached to a plurality of boards. It is characterized by comprising a plurality of parts.

  According to a third aspect of the present invention, in the first or second aspect, the mounting portion constituting the mounting mechanism of the main body is a suction cup.

The invention according to claim 1 includes a main body on which the propulsion unit can be attached to and detached from the board, a mounting portion having a substantially vertical surface provided at the rear portion of the main body, and a propulsion portion that is mounted on the mounting portion at the rear portion of the main body. Since the flexible main body is equipped with a mounting mechanism composed of a plurality of mounting portions corresponding to at least a plurality of boards, a plurality of, for example, two boards are juxtaposed, and a propulsion unit is mounted so as to relate to both. In addition to the pleasure of using the natural power of the board, you can ride like a catamaran board, move to the neighborhood and play on the water, you can increase the valuation of surfing and windsurfing play.
In addition, the above-mentioned catamaran board play can be propelled by a propulsion device regardless of a natural force person, so that also in this respect, the valuation can be greatly increased.

Further, since the propulsion unit is detachably attached to the surfboard or windsurfing board, it can be used with a twin-pull type propulsion unit without changing the conventional surfboard side or windsurfboard side.
Furthermore, there exists an advantage that the water play by the conventional human power can be performed by removing a propulsion part from a propulsion machine.
Furthermore, since the surfboard or windsurfing board and the propulsion unit can be separated and disassembled, there is an advantage that the transportability of the propulsion unit is improved.

  In the invention according to claim 2, since the propulsion unit main body is disposed on the base part of the intermediate part and on both sides, the side part is configured to support the attachment part to the plurality of boards, and the side part is composed of a plurality of left and right parts. In addition to the effect of claim 1, the propeller main body can be attached to the board in a state where two boards are juxtaposed with each other, and a twin-pull type board can be reliably formed. Since the juxtaposed board mounting part is formed as a lateral part on the left and right sides of the base part of the intermediate part, the board mounting part can be expanded and contracted in the left-right direction, so that the mobility, balance and operator's preference can be adjusted.

  In the invention according to claim 3, since the attachment portion constituting the attachment mechanism of the main body is a suction cup, in addition to the effect of claim 1 or 2, the attachment mechanism is attached to the plate-like portion of the board with the suction cup. There is an advantage that the mounting portion is only a suction cup and can be applied to a plane on the board side, and the mounting mechanism is simple.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a perspective view showing a state in which a propulsion device according to the present invention is attached to a board.
The propulsion device 1 includes a main body 2 and an outboard motor 30 constituting a propulsion unit attached to the rearmost portion of the main body 2 and two boards 40 and 40 having buoyancy. Each part of the main body was formed of a pipe material in the examples.
Although the boards 40 and 40 are surfboards in the embodiment, it is needless to say that they may be windsurfboards.

The propulsion device main body 2 includes a frame-like base portion 3 at an intermediate portion. The base portion 3 includes left and right flange portions 3a and 3a, a front portion 4 connected to the front end portions of the flange portions 3a and 3a, and left and right flange portions. 3a and a rear portion 5 connected to the rear end portion of 3a.
In addition, left and right side portions 11 and 11 having a frame shape long in the front-rear direction are provided on the outer sides of the left and right flange portions 3a and 3a.

2 is a perspective view of the propulsion unit 1 mounted on the boards 40, 40, FIG. 3 is a plan view, FIG. 4 is a side view, and FIG. 5 is a front view.
This will be described in detail with reference to these drawings and FIG.
The left and right flange portions 3a, 3a face in the front-rear direction, and the front portion 4 is composed of the left and right portions 4a, 4a of a bowl shape that is substantially rearwardly inclined in a side view at the front end portion thereof and the lateral portion 4b that connects the upper end portions thereof. The rear end portions of the horizontal portions of the left and right portions 4a, 4a are connected by a connecting member 9 so that the length thereof can be adjusted in the front-rear direction, and a handle portion 5 having a substantially inverted U shape in front view is formed on the front portion 4.

  The left and right hook-shaped portions 4a and 4a are provided with reinforcing hooks 4c and 4c that are inclined forward and the cross member 4d is provided between the portions 4a and 4a below the horizontal portion 4b. A cross member 4e was installed between the rear portions of the horizontal portions 4a and 4a.

The rear portion 6 is connected to the rear end portions of the left and right flange portions 3a, 3a by a connecting member 9 so that the length can be adjusted in the front-rear direction.
The rear portion 6 is substantially U-shaped in plan view, and the left and right portions 6a, 6a are connected to the rear end portions of the left and right flange portions 3a, 3a, and the lateral portion 6b is provided at the rear end portion.
A cross member 6c is installed in the middle of the left and right portions 6a, 6a in the front-rear direction, and post members 7a, 7a are erected so as to stand upright on the cross member 6c. 7 is installed. In the embodiment, the mounting portion is generally made of a vertically oriented plate material.
Reinforcing rods 7b and 7b were installed between the post members 7a and 7a and the left and right portions 6a and 6a.

An outboard motor 30 is a propulsion unit, and includes an uppermost engine cover 30a, an under cover 30b that detachably receives the engine cover 30a, an extension case 30c that extends downward from the cover 30b, a gear case 30d, and the like. An engine, a fuel tank, and the like are accommodated in both covers 30a and 30b, and a propeller 31 provided with a drive shaft passing through the extension case 30c and facing the rear of the gear case 30d is driven by the engine.
A stern bracket 32 is provided on the front side of the extension case 30c so that the outer periphery of the extension case 30c can swing left and right. The stern bracket 32 is bifurcated and has a reverse U shape when viewed from the side. Fasten with metal fittings 32a, 32a.

On the horizontal part of the left and right parts 4a, 4a of the front part 4 and on the lower surface of the left and right parts 6a, 6a of the rear part 6, suction cups 8 ... (... are plural, the same applies hereinafter), which are mounting parts constituting the mounting mechanism. Hang down and project.
The suction cups 8 are arranged at the front part 4 on the left and right sides and at the rear part 6 on the right and left sides.
The suction cup 8 is as shown in FIG. 7, and a nut member 8b is embedded in the top of an inverted cup-shaped main body 8a, and a bolt portion 4g provided at a lower end portion of a support portion 4f suspended from the member 4a is screwed thereto. Fastened to the body.

The left and right flange portions 3a, 3a are connected to the rear end portions of the horizontal portions of the left and right portions 4a, 4a of the front portion 4 and the front end portions of the left and right portions 6a, 6a of the rear portion 6 so as to be adjustable in length. The detailed structure of the connecting members 9 is as shown in FIG.
FIG. 6 is an enlarged vertical cross-sectional view of a portion where the flange 3a and the portion 4a of the front portion 4 are connected by a connecting member.

The connecting member 9 includes a nut portion 9a and a bolt portion 9d. The male screw portion 9e of the bolt portion 9d is screwed into the female screw portion 9b of the nut portion 9a, and the nut portion 9a has a tapered hole 9c. The member 9d has a divided claw piece 9f.
The rear end portion of the front portion 4a and the butted end portions of the left and right flange portions 3a are inserted into the inner diameter portions of the nut member 9a and the bolt member 9d, and the bolt member 9d is screwed to the nut member 9a. One end of one 6 was tightened with the divided claw piece 9f, and a lock screw 9h was passed through the head 9g of the bolt member 9d to be fixed to the flange 3a.
By loosening the nut member 9a and the bolt member 9d, the members 4a and 3a can expand and contract in the length direction.

That is, for example, in the illustrated example, the inner diameter of the front portion 4 side is made smaller than that of the other three side, both are fitted in a nested manner, and are expanded and contracted by adjusting the fitting length as shown by the arrows. Can do.
Although applied to the front part in the figure, the relationship between the rear part 6 and the flange part 3a is also the same, so that the front part 4 having the handle part 5 provided before and after the base part 3 and the mounting part 7 of the outboard motor are mounted. The rear portion 6 can be adjusted in length in the front-rear direction with respect to the base portion 3, and the front-rear length of the propulsion device body 2 can be adjusted depending on the preference of the occupant (player) and the length of the board.

  In the embodiment shown above, the connecting member 9 is composed of male and female screw members, but the connecting structure of the members 4, 3 or 3, 6 is not limited to this. Any detachable coupling mechanism that detachably couples can be used.

On the outer side surfaces of the intermediate portions of the left and right flange portions 3a, 3a of the base portion 3, connecting rods 10, 10 are provided projecting outwardly apart from each other in the front-rear direction, and the connecting rods 10, 10 have inner end portions. These are joined to the outer side surfaces of the left and right flange portions 3a, 3a.
Side frame members 11, 11 constituting the left and right side portions of the propulsion device body 2 are joined to the outer end portions of the connecting rods 10, 10.

Each side frame member 11 has a length in the front-rear direction, has a substantially rectangular frame shape in plan view, and has inner and outer flange portions 11a, 11b facing the front-rear direction, and front end portions of the flange portions 11a, 11b. It is provided with flange portions 11c and 11d that are connected in the shape of a round and are oriented sideways.
In the side frame members 11, 11, the inner flange portions 11 a, 11 a are joined to the connecting flanges 10, 10, and a predetermined interval is provided on each outer side of the left and right flange portions 3 a, 3 a of the base portion 3. Thus, the side frame members 11 and 11 are connected in parallel with the flange portion flange portions 3a and 3a, and left and right side portions projecting outward are formed on the left and right sides of the propulsion unit main body 2, respectively.

The left and right side frame members 11, 11 constituting the left and right side portions of the propulsion unit main body 2 have suction cups 8 similar to the above on the lower surfaces of the front and rear intermediate portions of the outer flanges 11 b, 11 b. Hang down and project.
In addition, the above-mentioned connecting member 9 is interposed in the connecting rods 10 and 10 of the embodiment, and this portion is made an old type, and the interval between the side frame members 11 and 11 and the left and right flange portions 3a and 3a is enlarged or reduced. By doing so, it may be possible to adjust the left and right side positions of the left and right side portions of the propulsion device main body 2, and by adopting the structure of FIG. I understand that I can do it.

The board is mounted on the board via the propulsion unit 2 described above. Two boards 40 and 40 are prepared in the same manner, and the boards 40 and 40 are arranged in parallel as shown in FIG.
The propulsion device 1 faces the upper surfaces 40a, 40a of the boards 40, 40, and the propulsion device 1 is sucked, fixed, and mounted on the upper surfaces 40a, 40a of the propulsion device 1 as shown by a chain line in FIG.

FIG. 2 shows a state in which the propulsion unit 1 is mounted on the boards 40, 40. The suction cups 8, 8 and the propulsion unit main body before and after one side frame portion 11A of the side frame portions 11, 11 constituting the side portions on both sides. 2 sucking front and rear suction cups 8, 8 on this side are adsorbed on the upper surface of the board 40A on one side, and the front and rear suction cups 8, 8 on the other side frame portion 11B and the front and rear suction cups 8, 8 on this side of the propulsion unit body 2. 8 is adsorbed on the upper surface of the board 40B on one side.
Thereby, as shown in FIG. 2, the main body 2 of the propulsion device 1 can be detachably mounted on the two boards 40, 40 juxtaposed on the left and right sides with a gap therebetween.

By the way, the outboard motor 30 constituting the propulsion unit faces the space between the left and right boards 40, 40, and obtains propulsive force by driving underwater.
Two boards 40, 40 are juxtaposed, so that it becomes a so-called catamaran type board, and a mobility different from the mobility by one board is obtained.

The handle portion 5 standing at the front portion of the main body 2 may be used for boarding the catamaran board.
Since the propulsion device 1 is mounted on the boards 40 and 40 by the suction cups 8..., It can be easily detached and used for surfing as a single board.

FIG. 8 is a diagram showing another embodiment of the present invention, and is a perspective view immediately before disassembling and mounting the board and the propulsion device.
The main body 102 of the propulsion device 101 includes frame-shaped side portions 111 and 111 that are integrally provided on both outer sides of the left and right flange portions 103a and 103a of the base portion 103, and an intermediate portion in the front-rear direction inside the left and right flange portions 103a and 103a. The two rear frames 106, 106 which are L-shaped facing each other inward and rearward in a plan view, and are L-shaped in a side view, are connected to each other, and are L-shaped portions 106a, A mounting member 107 is configured by laying a generally vertical plate material between 106a.
As described above, the outboard motor 30 is mounted on the mounting portion 107 via the stern bracket 32.

Cross members 110 and 110 are installed between the front and rear portions of the outer flanges 111b and 111b of the side frames 111 and 111 integrally formed on both outer sides of the left and right flanges 103a and 103a of the base 103.
Connecting members 109 and 109 are provided at the front end portions of the left and right flange portions 103a and 103a, and the rear end portions of the horizontal portions 104a and 104a of the left and right portions 104a and 104a of the front portion 104 having a reverse U-shaped handle portion 105 are provided. And length adjustable. The front portion 104 includes cross members 104d and 104e and a reinforcing member 104c.

The suction cups 108 similar to those described above are provided on the front and rear lower surfaces of the side frame portions 111 and 111 of the propulsion unit main body 102, the rear lower surfaces of the left and right flange portions 103a and 103a, and the lower surfaces of the left and right portions of the front portion 104. In the embodiment, eight suction cups are installed, but the number is arbitrary.
The propulsion unit main body 102 is lowered onto the left and right boards as suckers 108..., And adsorbed to the upper surfaces 40a and 40a, and the propulsion unit 101 is detachably mounted.

FIG. 9 is a plan view of the state where the propulsion device 101 is mounted, and FIG. 10 is a side view thereof.
Also in this embodiment, the boards 40 and 40 are juxtaposed so as to be parallel to the left and right, and the propulsion device 101 is mounted from above through the suction cups 108. Convenience when moving to the venue, and play on the water.

The embodiment has been described above.
In the embodiment, the suction cup is used as the detachable mounting mechanism, but the detachable mounting mechanism to the hull is not limited to this.
Depending on the type of board, a mounting mechanism other than a suction cup may be used.For example, a windsurfing board with a detachable sail or mast part uses the existing male / female mounting mechanism, and uses the counterpart's mounting equipment. The mounting mechanism is not limited to the suction cup described above.
In the embodiment, an outboard motor is used as the propulsion unit (propulsion device). However, a water jet pump may be used instead of the outboard motor.

  The propulsion device of the present invention is suitable for a surfboard or a windsurfboard.

It is a perspective view which shows the state which attaches the propulsion apparatus which concerns on this invention to a board. It is a perspective view of the state where the propulsion unit is mounted on the board. It is a plan view of a state where the propulsion device is mounted on the board, FIG. 4 is a side view of FIG. 3. FIG. 3 is a front view. It is an expanded vertical sectional view of the part which connected the base and front part of the propulsion device main body with the connecting member. It is an expanded sectional view of the suction cup which comprises the attachment part of a mounting mechanism. It is a figure which shows other embodiment of this invention, and is a perspective view just before disassembling and mounting | wearing with a board and a propulsion device. It is a top view in the state where a propulsion machine was installed. It is a side view in the state where a propulsion machine was installed.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,101 ... Propulsion machine 2,102 ... Propulsion machine main body 7,107 ... Mounting part, 8,108 ... Mounting mechanism, Suction cup as mounting part, 11, 111 ... Side part, 40 ... Board.

Claims (3)

A small water vehicle propulsion device that is detachable via a mounting mechanism to a board having buoyancy suitable for surfing alone,
The propulsion device includes a main body detachable from the board, a mounting portion having a substantially vertical surface provided at a rear portion of the main body, and a propulsion portion mounted on the mounting portion at the rear of the main body,
The removable main body of the propulsion device includes a mounting mechanism including a plurality of mounting portions corresponding to at least a plurality of boards,
This is a water vehicle propulsion machine. The propulsion device main body includes a base portion of an intermediate portion, side portions disposed on both sides of the intermediate portion and supporting attachment portions to a plurality of boards, and the side portion includes a plurality of left and right portions. Item 1. A water vehicle propulsion device according to item 1. The water vehicle propulsion device according to claim 1 or 2, wherein the mounting portion constituting the mounting mechanism of the main body is a suction cup.

Images