JP2002274480A - Catamaran hydrofoil yacht - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem wherein bows of leeward side hulls lower in a catamaran hydrofoil yacht for connecting the left and right hulls by a connecting shaft so as to be relatively rotatable. SOLUTION: Rear parts of a pair of left and right hulls 10A and 10B for connecting a longitudinal directional intermediate part to both end parts of the connecting shaft 12 extending in the lateral direction so as to be only rotatable are rotatably connected by a connecting beam 13. The longitudinal directional intermediate part and front parts of the respective hulls are provided with rear struts 30 and front struts 40 for respectively arranging a rear hydrofoil 31 and a front hydrofoil 41 in a lower end part. A mast 60 is arranged on the connecting shaft, and the front struts are steered by a steering device 50. A crew support part 21 of a deck 20 for supporting crews is made rigid for not contacting with the respective hulls, and is supported by a first support member 22 for connecting a front edge part to the connecting shaft so as not to laterally incline, and a second support member 23 for connecting a rear edge part of the crew support part to the connecting means so as not to hinder a lateral inclination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for making one person or two or three persons.
The present invention relates to a small catamaran hydrofoil yacht suitable for human use.

[0002]

2. Description of the Related Art As a catamaran hydrofoil yacht of this type, the inventor has previously described the magazine "Rudder", May 1998, p.
Page 121) and the June issue of the same magazine (Page 103 to 1)
(P. 05) there is a high-speed small yacht "Twin Ducks" whose concept was announced. As shown in FIG. 8, a pair of right and left hulls 10A, each having a middle portion in the front-rear direction connected to both ends of a connection shaft 12 extending in the horizontal direction so as to be rotatable only in the pitching direction,
The rear portion of 10B is connected by a connecting beam 13 parallel to the connecting shaft 12 so as not to obstruct the pitching, and the right and left extending downward from the front-rear intermediate portion of each of the hulls 10A and 10B between the connecting shaft 12 and the connecting beam 13. A pair of rear struts 3
The lower hydrofoil 31 is provided at the lower end of each of the hulls 0, and a pair of left and right rudder shafts 42 provided at the front of each of the hulls 10A and 10B and steered by the steering device 50 have upper portions formed around the horizontal axis. Front struts 40 rotatably supported by
Each of the front struts 40 is provided with a pair of left and right sensors 45 each having a forwardly extending sensor plate 45b at the tip of an elongated beam 45a extending forward. This is a catamaran hydrofoil yacht in which a sail 63 is provided on a mast 60 whose lower end is supported at a central portion and stands up. In this twin-hull hydrofoil yacht concept, the crew deck 1 is of a trampoline type that is directly stretched between the connecting shaft 12, the connecting beam 13, and the upper surfaces of the hulls 10A and 10B, and the lower end is a connecting shaft. 12
The lower ends of the mast support 2 attached to the mast 60, which is directly supported in the center of the mast support 2 and attached to the bottom of the mast support 2 and extending downward and to the left and right, are attached to the hulls 10A and 10A.
The mast 60 is supported in an upright state by being attached to the upper surface of B. In this concept, each of the left and right rear struts 30 has an L-shape when viewed from the side, and a rear hydrofoil 31 is provided at the tip of one arm, and a wheel 33 is provided at the tip of the other arm. The vicinity is rotatably attached to the middle part of the hulls 10A and 10B in the front-rear direction by the lateral support shaft 32, the rear hydrofoil use position where the arm on the side where the rear hydrofoil 31 is provided extends downward, and this arm jumps up. Then, the rear strut 30 can take both states of the wheel use position where the wheel 33 at the tip of the other arm projects below the hulls 10A and 10B. The launch has been made easier. In this catamaran hydrofoil yacht, when there is no wind and there is no occupant, the loads applied to the left and right hulls 10A and 10B are the same due to the weight of each component.

In a yacht, it is necessary to support the hull tilting by a heel moment (lateral tilting moment) due to a crosswind in some way. In a typical small yacht such as a dinghy, the occupant leans toward the windward side, or in the case of a strong crosswind, extends out of the hull from the windward side (hike out) to support the hull tilting.
In the twin-hull hydrofoil yacht shown in FIG. 8, when the depth of each of the hydrofoils 31, 41 on the leeward side increases due to the heel moment in the wing running state, the sensor 4 of the front hydrofoil 41 on that side is increased.
By the action of 5, the angle of attack of the front hydrofoil 41 is automatically increased, the front part of the leeward hull is raised, and the angle of attack of the rear hydrofoil 31 is also larger than the windward side, and the lift is greater than the windward side. . Since the lift difference is automatically generated as described above, the heel moment can be sufficiently supported without moving the weight at high speed.

[0004]

As described above, FIG.
In the conventional twin-hull hydrofoil yacht shown in FIG.
1 automatically generates a lift difference, so that the heel moment can be supported without shifting the weight. However, in this state, the burden load on each of the hydrofoils 31 and 41 on the leeward side is larger than that on the windward side, so that it is difficult to enter the wing run, and even when the wing runs, it is difficult to maintain the wing run in a weak crosswind,
When a blow (a state in which the strength fluctuates in a strong wind) is received, a problem occurs such as that the hull on the leeward side comes in first. It seems that this problem can be solved by shifting the weight of the occupant on the deck 1 like a conventional dinghy. However, in the catamaran hydrofoil yacht having the structure shown in FIG. 8, the torsional rigidity between the left and right hulls 10A and 10B is considered. Turned out to be impossible because of its small size.

Next, the reason will be described with reference to FIGS. 7 (a), 7 (b2) and 7 (c2). FIG. 7 shows a state where a cross wind has been received from the right hull 10A side. The catamaran hydrofoil yacht shown in FIG. 8 does not include the backbone 14 shown in FIG. 7, but its operation does not essentially change depending on the presence or absence of the backbone 14. When a heel moment is received by the crosswind, the right hull 10A of the catamaran hydrofoil yacht assumes that the center of the wind force applied to the sail 63 is almost right above the connecting shaft 12, as shown in FIG. An upward force F / 2 is applied to a position substantially coincident with the connecting shaft 12, and a downward force F / 2 is applied to the left hull 10B at a position almost coincident with the connecting shaft 12. Here, “F × interval between left and right hull / 2 = heel moment”.

In this state, when the occupant is riding on the rear portion of the center of the deck 1 in the width direction (the center near the connecting beam 13), the left and right hulls 10A and 10B are located at positions substantially coincident with the connecting beam 13. A downward force W / 2 (where W is the weight of the occupant) is applied (not shown). As a result, the force applied to the vicinity of the connection beam 13 of the left and right hulls 10A and 10B is the same, but the force applied to the vicinity of the connection shaft 12 is such that the right hull 10A on the windward side is F / 2 upward and the left side on the leeward side. Since the hull 10B is directed downward at F / 2, the bow (bow) of the left hull 10B on the leeward side is lowered. As a result, the angle of attack of the front hydrofoil 41 on the leeward side is automatically increased by the action of the sensor 45, but the speed does not increase and sufficient lift cannot be obtained unless the wing running, so that the bow of the left hull 10B is not obtained. Does not go up. Therefore, the front hydrofoil 41 on that side is less likely to enter the wing run, and unless this enters the wing run, the rear hydrofoil 31 on that side is not.
Does not enter the wing run. On the other hand, the right hull 10A on the windward side
Since the bow rises, the hydrofoil 41, 31 on that side easily enters the wing running state, but the front hydrofoil 41 may jump into the air.

As described above, in the conventional twin-hull hydrofoil yacht shown in FIG. 8, since the bow of the left hull 10B on the leeward side is lowered, the hull starts to take off more water than the right hull 10A on the leeward side. It is extremely difficult. Even if the left hull 10B is in a wing running state, if a strong blow is received during the wing running with a relatively weak wind, the left hull 10B on the leeward side immediately hits the water. A problem arises in that the bow of the left hull 10B on the side is driven into the waves to cause a pitch pole (capsule forward).

In such a case, in order to raise the bow of the left hull 10B, it is generally considered that the occupant moves the weight on the right hull 10A on the connecting beam 13. In such a case, as shown in FIG. 7 (b2), the occupant's weight W is all added to a position almost coincident with the connecting beam 13 of the right hull 10A. And the force due to the heel moment is shown in Fig. 7 (a).
In this state, the forces applied to the left and right hulls 10A and 10B are as shown in FIG. 7 (c2) obtained by combining FIGS. 7 (a) and 7 (b2). It will be different. As is clear from this, the left hull 1 on the leeward side
The bow of OB is too low and does not rise, and the right hull 10A on the windward side rises too much. If the occupant moves the weight back and forth and left and right from this state, this state changes slightly, but the above-mentioned tendency of the bow of the hull on the leeward side does not change. Therefore, the above-described problems are not essentially solved. It is also conceivable to increase the wing area of each hydrofoil 31, 41 to reduce the burden load on the leeward hydrofoil, but in such a case, the leeward area of the leeward side becomes unnecessarily large, and there is a margin in lift. Since the resistance at a certain high speed increases, there arises a problem that the maximum speed when receiving the same wind becomes low.

[0009] In the prior art described above, the mast 60
The lower ends of both sides of the mast support 2 that supports the
Since it is mounted on the left and right hulls 10A and 10B which rotate relatively, the mounting structure is complicated, and the wind force applied to the sail 63 affects the operation of each hull 10A and 10B. It is an object of the present invention to solve the above-mentioned problems, and to make it very easy to switch the above-described hydrofoil use position and wheel use position to the respective use states, and to lock after the change. .

[0010]

For this purpose, a twin-hull hydrofoil yacht according to the present invention comprises a pair of right and left hulls in which a longitudinally intermediate portion is connected to both ends of a connecting shaft extending in a lateral direction so as to be rotatable only. And a connecting beam arranged in front or rearward of the connecting shaft in parallel with the connecting shaft, and both ends of which are connected to each hull rotatably at least around the longitudinal axis, and a longitudinal middle of each hull between the connecting shaft and the connecting beam. A pair of left and right rear struts, each having a rear hydrofoil at the lower end, and a steering device provided at the front of each hull so as to be rotatable around a vertical axis. A pair of left and right rudder shafts steered by the above, and the lower end of each of the rudder shafts is supported in a rotatable manner about a horizontal axis and has a plate-like shape extending in the front-rear direction and a front hydrofoil at the lower end. Left and right pair of front struts and this A pair of left and right sensors, each having a forwardly extending sensor plate attached to the front end of an elongated beam attached to the front strut, and a mast having a lower end supported at the center of the connecting shaft and a standing upright sail. In a catamaran hydrofoil yacht comprising: a deck for supporting an occupant, a flat and rigid occupant support portion which is not in contact with each hull and is arranged upward away from the connecting shaft and the connecting beam; A first support member for connecting the shaft and a portion of the occupant support portion above the connection shaft so that the two do not relatively incline laterally; a central portion of the connecting beam and a portion above the central portion of the occupant support portion; And a second support member that connects the two portions so as not to prevent the two portions from relatively tilting sideways.

In the invention of the preceding aspect, the first support members are arranged symmetrically with respect to the longitudinal center of the connection shaft with a space therebetween, and the upper and lower ends are respectively fixed to the occupant support portion and the connection shaft. The second support member has a second support member having an upper end portion fixed to a center portion in the width direction of the occupant support portion and a lower end portion supported at the center portion of the connecting beam so as to be tiltable in the horizontal direction. Is preferred.

It is preferable that the connecting beam according to the second aspect of the invention is disposed rearward of the connecting shaft.

It is preferable that the occupant support portion of the invention of each of the preceding aspects is formed of a rigid frame constituting an outer edge portion, and a cloth stretched with the outer edge attached to the frame member.

The invention of each of the preceding aspects is arranged such that one end of the connecting shaft is connected to the center of the connecting shaft and the other end of the connecting shaft is rotated about the longitudinal axis about the center of the connecting beam. The lower end of the mast is further attached to a position in front of the portion connected to the connecting shaft of the backbone, and the lower end of the mast support attached to the middle of the mast and extending downward and left and right is connected to the connecting shaft. It is preferable to attach to.

Each of the rear struts of the invention of the preceding claims has an L-shape when viewed from the thickness direction, has a rear hydrofoil at the tip of one arm, and a wheel at the tip of the other arm. The vicinity of the connection part is rotatably attached to the middle part of each hull in the front-rear direction via a support shaft extending in the left and right direction, after one arm extends downward, the hydrofoil use position and one arm are flipped up A stopper for locking the rear strut to the hull in both states of the wheel use position where the wheel at the tip of the other arm projects below the hull, further comprising a stopper having one end pivotally supported on the hull side. The first link is rotatably connected via a pivot shaft to a position distant from the pivot position of the first link to the hull, and one end distant from the pivot shaft is pivotally supported by the rear strut. Two links and this link The spring comprises a spring for urging the link to rotate in the opposite direction about the pivot shaft, and a locking member provided on one of the two links for engaging with a part of the other and receiving the urging force of the spring. In the state where the locking member is engaged, when a force is applied in a direction to bring each end of each link closer to each other, a rotational moment that bends both links around the pivot shaft against the urging force of the spring is applied. It is preferable to configure so as not to occur.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a catamaran hydrofoil yacht according to the present invention will be described below with reference to FIGS. As mainly shown in FIGS. 1 and 2, the catamaran hydrofoil yacht according to this embodiment includes a pair of right and left hulls 10A and 10B,
A connecting shaft 12 and a connecting beam 13 for connecting the two hulls 10A and 10B at a center portion and a rear portion thereof, and a backbone connected between the connecting shaft 12 and the connecting beam 13 so as to be parallel to the hulls 10A and 10B. 14 and
These connecting shaft 12, connecting beam 13 and backbone 14
20 supported by the hull and each hull 10A, 10B
And a pair of left and right rear struts 30 provided at the center of the vehicle and supporting the rear hydrofoil 31, and the front hydrofoil 41 provided at the front of each of the hulls 10A and 10B and steered by the steering device 50. Front strut 4 with sensor 45
0 and the mast 60 supported by the backbone 14 and the connecting shaft 12 are the main components.

Each of the left and right hulls 10A and 10B is formed of a fiber reinforced plastics (FRP) having a shell structure and the same shape which is bilaterally symmetric with respect to the center plane. In order to reduce the risk of a pitch pole in the event of being stuck, a plate-shaped bow lifter 11 that rises forward is provided. At the center of the hulls 10A, 10B in the front-rear direction, a fitting hole 10a is formed by an inner surface of a tubular body integrally provided so as to penetrate the left and right sideways in the lateral direction, and is a rigid corrosion-resistant light alloy ( The left and right hulls 10A are fitted by fitting both ends of a connecting shaft 12 made of a tube material of, for example, an aluminum alloy and the like) into a fitting hole 10a so as to be rotatable but restrained from moving in the axial direction. , 10B are connected via a connecting shaft 12 so as to be capable of relative rotation in the pitching direction.

A connecting bracket 16 for attaching both ends of the connecting beam 13 is fixed to a corner between the inner side and the upper surface of the rear part of each of the hulls 10A and 10B, which is located a predetermined distance behind the fitting hole 10a. . As shown in detail in FIG. 3, each connecting bracket 16 is directed to an angle 16a fixed to each of the hulls 10A and 10B and a vertically-oriented plate-shaped hull 10A and 10B provided integrally therewith. Each of the lugs 16b is inserted between the forks of the fork member 17, and both the lugs 16 and 17 are swingably connected by a hinge bolt 18 having a longitudinal axis and a nut. A long hole 17a is formed in the cylindrical handle portion of each fork member 17, and this handle portion is inserted into each end of the connection beam 13 made of a rigid corrosion-resistant light alloy tube so as to be movable in the axial direction, and connected. A connecting pin 19 that penetrates the beam 13 in the diameter direction is inserted into the long hole 17a and is prevented from coming off by the washer 19b and the split pin 19a. Thus, the rear portions of the hulls 10A and 10B are connected such that the hulls 10A and 10B can freely rotate within the relative rotation angle range about the connection shaft 12 in the normal operating state of the catamaran hydrofoil yacht. They are connected by a beam 13.

The backbone 14 is a composite material of wood and FRP. As shown in FIGS. 1 and 2, the connecting shaft 12 is fitted and inserted into the lateral hole formed in the front part so that the movement in the axial direction is restricted. The center of the connecting beam 13 is applied to the rear end face of the connecting shaft 12 and fastened by a U-bolt 15. As a result, the backbone 14 is arranged at the center in parallel with each of the hulls 10A and 10B and is substantially immovable relative to the connecting shaft 12, but the connecting beam 13 is slightly angled with respect to the backbone 14 about the longitudinal axis. It is relatively rotatable. The backbone 14 is integrally formed with an extension protruding forward from the connection shaft 12, and the lower end of the mast 60 is attached to the upper side near the tip of this extension via a rubber-shaped universal joint to form a connection beam. The mast support 61 has a central portion bent slightly below the mounting portion of the wishbone boom 62 and extends downward and to the left and right. The lower ends of the mast support 61 are located just inside the hulls 10A and 10B. Is attached to the connecting shaft 12 via a bracket 61a, whereby the mast 60 is supported in an upright state.

The deck 20 for supporting the occupant is shown in FIGS.
As shown in FIG. 4 and FIG. 4, a flat and rigid occupant support portion 21 and this occupant support portion 21 are connected to each of the hulls 10A, 10B,
It is composed of a first support (first support member) 22 and a second support (second support member) 23 that are supported at positions separated upward from the connection shaft 12 and the connection beam 13. The occupant support 21 of this embodiment is a rigid rectangular frame 21a made of a corrosion-resistant light alloy pipe constituting the outer edge.
And a durable cloth 21b (for example, a highly water-permeable mesh cloth made of polyethylene terephthalate-based synthetic fiber) which is wound around the frame 21a and stretched with a string. Although the frame 21a of this embodiment has only the outer periphery, a plurality of reinforcing pipes may be provided in parallel with the short side if necessary. The frame 2 of this embodiment
The interval between the pipes before and after 1a is slightly smaller than the interval between the connecting shaft 12 and the connecting beam 13 before and after.

The first support member 22 is composed of a pair of first columns 2 symmetrically arranged with respect to the center of the occupant support section 21 in the width direction.
2, each first support column 22 has an upper end fixed to a pipe on the front side of the frame 21a and extends downward, and a lower end has an inner peripheral surface in contact with the upper half of the outer peripheral surface of the occupant support 21. A semi-cylindrical connecting fitting 22a is fixed by welding. Each first
As shown in FIG. 1, the columns 22 are preferably located at positions adjacent to the inside of the brackets 61 a of the mast support 61, and the interval between the columns is preferably as large as possible. The second support member 23 is a single second support column 23 having an upper end fixed to the center of a pipe on the rear side of the frame 21a and extending downward.
And a support fitting 23a having a flat bottom surface at the lower end.
Are fixed by welding.

The deck 20 has a first support 22 on the front side.
Is mounted on the upper half of the connecting shaft 12 and is detachably fixed by a hose band (not shown), and the rear second column 23 is located just before the rear end of the backbone 14 to which the connecting beam 13 is attached. Is placed on the upper surface of the portion. With the above structure, the deck 20 always has the front pipe of the occupant support 21 above the connection shaft 12.
Is connected to the connecting shaft 12 via the first columns 22 so that the occupant is not substantially inclined laterally around the longitudinal axis, and is slightly above the connecting beam 13. The rear pipe of the support part 21 is supported by the central part of the connecting beam 13 via the second support column 23 and the backbone 14 at the center thereof so as not to prevent the connecting pipe 13 from inclining laterally. In addition, the attachment of each support | pillar 22, 23 with respect to the frame 21a may be welding,
A semi-cylindrical connection fitting and a hose band may be used as in the case of attaching the first support 22 to the connection shaft 12.

Each of the rear struts 30 has a plate shape extending in the front-rear direction. As shown in FIGS. 1, 2 and 5, the shape when viewed from the thickness direction is an L-shape. A rear hydrofoil 31 protruding left and right is provided, and a wheel 33 is provided at the tip of the other arm 30b via a lateral axle 33a. In the vicinity of the joint between the arms 30a and 30b,
At right angles to the plate surface, a support shaft 32 made of a corrosion-resistant light alloy pipe is fixed. Similarly to the fitting hole 10a, a second laterally penetrating sideway is provided between the connecting shaft 12 and the connecting beam 13 at the intermediate portion in the longitudinal direction of each of the hulls 10A and 10B.
Fitting holes 10b are respectively formed, and each rear strut 30
The rear strut 30 is rotatably attached to each of the hulls 10A and 10B by being fitted into the second fitting hole 10b so that the support shaft 32 can be freely rotated from the outside but restrained from moving in the axial direction. Can be The rear strut 30 is moved by the stopper 35 described below, as shown by a solid line, in the rear hydrofoil 3.
After the arm 30a provided with the first arm 1 extends downward, the hydrofoil use position and the one arm 30b are flipped up and the other arm 30b
Is locked to the hulls 10A, 10B in both states (see the two-dot chain line 30A) in the wheel use position where the wheel 33 at the tip of the nose protrudes below the hulls 10A, 10B. One arm 30a located in the water at the use position of the rear hydrofoil has a symmetrical airfoil cross-sectional shape.

The stopper 35 has first and second links 36 and 37, both made of a thin aluminum plate, which are connected to each other by a pivot shaft 38 so as to be relatively rotatable. The torsional coil springs (springs) 39 for urging the rollers 37 in opposite directions (in the illustrated example, the first link 36 is clockwise and the second link 37 is counterclockwise) are provided on the second link 37. First
It comprises a locking member (stopper pin) 37b which comes into contact with a part of the link 36 and receives the urging force of the torsion coil spring 39 (the drawing shows the received state). The stopper 35 is provided at a first position away from the pivot shaft 38.
One end of the link 36 is pivotally supported on a fixed shaft 36a fixed to the hulls 10A and 10B, and the adjustment shaft 37a of the second link 37, which is also separated from the pivot shaft 38 in the opposite direction, is fixed to the other arm 30b of the rear strut 30. It is used by pivotally supporting an adjustment shaft 37a fixed to any of a number of mounting holes 34a formed in the end plate 34.

As shown in the drawing, when the stopper pin 37b is in contact with a part of the first link 36 and receives the urging force of the torsion coil spring 39, the fixed shaft 36a, the adjusting shaft 37a and the pivot shaft 38 The positional relationship is defined by a line connecting the centers of the fixed shaft 36a and the pivot shaft 38, the adjustment shaft 37a and the pivot shaft 38.
The angle α on the right side in the figure at the intersection angle of the lines connecting the centers of the links exceeds 180 degrees, that is, the links 36 and 37
When a force is applied to one end of each of the members via the respective shafts 36a and 37a in such a direction as to approach each other, the force is applied to the stopper pin 3
The force is applied to press the portion 7b and the portion in contact therewith, so that the two links 36 and 37 are bent around the pivot shaft 38 against the urging force of the torsion coil spring 39 so that no rotational moment is generated. Therefore, even when an external force is applied to move the rear strut 30 to the wheel use position indicated by the two-dot chain line while the rear strut 30 is locked at the rear hydrofoil use position indicated by the solid line, the rear strut 30 does not switch to the wheel use position. When the rear strut 30 is locked at the wheel use position indicated by the two-dot chain line and an external force is applied to move the rear strut 30 to the rear hydrofoil use position indicated by the solid line, the rear strut 30 moves to the rear hydrofoil use position. It does not switch. This switching is performed by pressing the pivot shaft portion 38 of the stopper 35 with the fingertip in a direction opposing the urging force of the torsion coil spring 39 as shown by the reference symbol P in either one of the use states, thereby moving the two links 36 and 37 to the pivot shaft. This operation is possible by bending around 38, but this operation can be performed extremely easily without tools and parts, and is automatically locked to the other use state after the switching is completed.

When the rear hydrofoil is in the use position as shown by the solid line, one arm 30a of each rear strut 30 extends downward from the longitudinally intermediate portion of each of the hulls 10A and 10B as shown by the solid line, and has a lower end. After that, the hydrofoil 31 is in a position suitable for wing running, and the wheel 33 is in an upper position where it is not substantially submerged. In the state where the wheel is used as shown by the two-dot chain line, the wheel 3 at the tip of the other arm 30b is used.
3 protrudes below the hulls 10A and 10B, and can move on land and launch from land to water by the wheels 33. One arm 30a is flipped up rearward, and the rear hydrofoil 31 at the lower end of the arm 30a is landed. It is a position that does not hit the object.
The end plate 34 is provided with a large number of mounting holes 34a in the upper and lower three rows, but the rear hydrofoil 31 and the hull 10A,
10B can be adjusted mainly by selecting one of these three rows, and the angle of attack of the rear hydrofoil 31 at the post hydrofoil use position can be adjusted in the same row by the front and rear mounting holes 34.
It can be adjusted by selecting a.

Next, referring to FIGS. 1, 2 and 6, the front hydrofoil 41 is provided at the front of each of the hulls 10A and 10B and provided at the lower end thereof.
The front strut 40 which supports the front strut 40 and is steered by the steering device 50 and has the sensor 45 will be described.
A pair of left and right rudder shafts 42 are provided in front of the hulls 10A and 10B.
Is rotatably provided around the vertical axis, and is steered by the steering device 50 via a steering wheel 42a fixed to the upper end thereof. The steering device 50 includes a yoke 51 rotatably supported by a vertical pivot shaft 52 via a support base 54 above a front portion of the backbone 14 slightly behind the mast 60 mounting portion, and a rear portion of the yoke 51. And a pair of steering links 53 provided with ball joints 53a at both ends thereof and projecting forward and leftward from the left and right of the yoke 51 and connecting the distal ends of the respective steering wheels 42a. By pivoting the tiller 55 left and right, each rudder shaft 42 is rotated. An extension rod 56 is connected to the rear end of the tiller 55 via a ball joint so that the occupant can operate the steering device 50 at any position on the deck 20.

A forked member 43 fixed to the lower end of each rudder shaft 42 projecting downward from the hulls 10A, 10B is provided with a pair of plate-shaped front struts 40 via a support shaft 44 having a horizontal axis. The front upper part is rotatably supported, and the front strut 4
A front hydrofoil 41 protruding left and right is provided below 0. Each front strut 40 has a symmetrical airfoil cross-sectional shape, is steered by a steering device 50 via a rudder shaft 42, and is in a position along the front-rear direction when in a steering neutral position. As shown mainly in FIG. 6, a fork 43 is provided on the side of the front strut 40 above the support shaft 44.
A pair of polygonal cam plates 4 at each position facing the front and rear edges of
6 are fastened and fixed via wing bolts 46a passing through eccentric positions. By loosening the wing bolts 46a, adjusting the angular position of each polygonal cam plate 46, and retightening, the operating angle range of the front strut 40 with respect to the fork member 43 centering on the support shaft 44 is adjusted, whereby the front underwater is adjusted. The range of the angle of attack of the wing 41 is also adjusted within a range that does not cause a stall.

A sensor 45 for automatically adjusting the angle of attack of the front hydrofoil 41 in accordance with the depth of the front hydrofoil 41 during sailing has a rear end fixed to each front strut 40 and extends forward. The sensor plate 45b comprises an elongated beam 45a and a sensor plate 45b attached to the tip thereof. The sensor plate 45b is adjusted so as to rise forward in any operating angle range of the front strut 40 about the support shaft 44.

When the above-mentioned catamaran hydrofoil yacht is floated on the water with the left and right rear struts 30 in the rear hydrofoil use position, the catamaran hydrofoil is brought to rest by the buoyancy of each of the hulls 10A and 10B that have landed in the stopped state. The yacht is floating. Sale 63
When the wind starts sailing in response to the wind, the front strut 40
Is the angle at which the front polygonal cam plate 46 abuts the fork member 43, the angle of attack of the front hydrofoil 41 is maximized, and the lift coefficient thereby is also maximized. As the cruising speed increases, the lift force of the front hydrofoil 41 also increases, and at a certain speed, the front portions of the hulls 10A and 10B separate from each other and enter a wing running state. In this state, the front portions of the hulls 10A and 10B are raised and the angle of attack of the rear hydrofoil 31 is maximized, and the lift coefficient of the rear hydrofoil 31 is also maximized.
The rear portions of 0A and 10B also take off water, and the rear hydrofoil 31 is also in a wing running state. In the wing running state, the sensor plate 45b of the sensor 45 reaches the water surface, and the front hydrofoil 41 is maintained at a substantially constant depth from the water surface even when the burden load changes. On the other hand, the lift of the rear hydrofoil 31 is balanced with the load at a low speed by a large angle of attack (in a state where the stern is lowered) and the lift coefficient, but as the speed increases, the stern rises as the lift exceeds the load and the load increases. As a result, the angle of attack of the rear hydrofoil 31 is reduced and reaches a height at which the rear hydrofoil 31 is balanced. As a result, the rear hydrofoil 31 automatically maintains the angle of attack that is balanced with the speed and the burden load. The ratio of the burden load of each of the front and rear hydrofoil 41, 31 is 10:90 to 2
0: about 80.

Next, the force applied to each of the hulls 10A and 10B in a state where the wing is running under the cross wind will be described with reference to FIGS. 7 (a), 7 (b1) and 7 (c1). Figure 7 shows the right hull 1
This shows a state where a cross wind has been received from the 0A side. As in the case of the prior art described above, when a heel moment due to a cross wind is received, the right hull 10A of the catamaran hydrofoil yacht faces upward at a position almost coincident with the connection shaft 12, as shown in FIG. A force F / 2 is applied to the left hull 10B, and a downward force F / 2 is applied to a position substantially coincident with the connecting shaft 12 in the same manner.
The relationship between the magnitude of F and the heel moment is as described above.

In this state, when the occupant is riding on the rear part of the center of the deck 20 in the width direction, the connecting beams 1 are attached to the left and right hulls 10A and 10B, as in the case of the above-described prior art.
A downward force W / 2 (where W is the weight of the occupant) is applied to a position almost coincident with 3 and the hull 10A, 1
The force applied to the vicinity of the connecting beam 13 is the same, but the force applied to the vicinity of the connecting shaft 12 is
A is the upward F / 2, and the left hull 10B on the leeward side is the downward F / 2. Therefore, similarly to the above-described prior art, the depth of the front hydrofoil 41 on the leeward side is increased, and the left and right hydrofoil
1, 41 are different from each other. However, according to this embodiment, the occupant has a weight W at the rear of the deck 20.
This problem is solved by moving the windshield on the right hull 10A on the windward side. This will be described in detail below.

If the weight is shifted in this manner (see the two-dot chain line W in FIG. 7 (b1)), the second support column 23 becomes the frame 2 of the occupant support portion 21.
1a, the weight W itself transmitted from the second support column 23 to the central portion of the connecting beam 13 does not prevent the rear pipe from laterally tilting with respect to the connecting beam 13.
A and 10B are equally shared by W / 2, respectively. On the other hand, the moment caused by the weight shift to tilt the occupant support 21 is caused by the rigidity of the occupant support 21 and the two first columns 2
The power is transmitted from the connecting shaft 12 to each of the hulls 10A and 10B via the second shaft 2. As a result, as shown in FIG. 7 (b1), the forces applied to the positions of the left and right hulls 10A and 10B substantially coincident with the connection beam 13 are respectively downward forces W / 2, and substantially coincide with the connection shaft 12. Is applied to the right hull 1 on the windward side.
0A is upward F / 2 and the leeward left hull 10B is downward F / 2. Then, when the force due to the heel moment shown in FIG. 7 (a) is combined with this, as shown in FIG. 7 (c1), the force applied to the position almost coincident with the connecting beam 13 of each of the left and right hulls 10A, 10B is Same downward force W
/ 2, and the force applied to the position substantially coincident with the connecting shaft 12 is such that the right hull 10A on the leeward side is upward (FW) / 2 and the left hull 10B on the leeward side is downward (FW) / 2. become.

In this state, the force "FW" applied to a position substantially coincident with the connecting shaft 12 of each of the hulls 10A and 10B is:
Although the right hull 10A on the leeward side and the left hull 10B on the leeward side are in opposite directions, the weight W is moved laterally so that “FW = 0” (if the wind is strong, (If it is weaker, it moves toward the center of the deck 20 if it is weaker), all become zero, while the force applied to the position almost coincident with the connecting beam 13 remains unchanged at W / 2 downward.
As a result, the forces applied to the left and right hulls 10A and 10B become the same, and the burden loads on the left and right hydrofoil 31 and 41 become the same, so that the postures of the left and right hulls 10A and 10B become the same. As a result, even a relatively weak wind can easily move to the wing running at the same time on the left and right sides, and even when the wind becomes weak during the wing running, the hulls 10A and 10B are less likely to land on water and pitch poles and the like are less likely to occur. Although only the heel moment has been described above, the body weight W is moved in the front-rear direction with respect to the vertical tilt moment to support the hulls 10A and 10B from tilting back and forth.

In the above embodiment, the lower end of the mast 60 is attached to the front end of the backbone 14 projecting forward from the connecting shaft 12, and the center of the mast 60 is attached to the middle of the mast 60, and each mast support 61 extends downward. Since the mast 60 is supported upright by attaching the lower end to the connecting shaft 12, the mounting structure of the lower end of the mast support 61 is simplified, and each hull 1
There is no risk of affecting the operation of 0A and 10B.

In this embodiment, the connection beam 13
Is arranged behind the connection shaft 12 and the lower end of the mast 60 is attached to the front end of the backbone 14 protruding forward from the connection shaft 12, so that the entire arrangement is similar to that of a conventional small yacht such as a dinghy. Since the structure is arranged on the front side, a twin-hull hydrofoil yacht that is easy to use and easy to use even for those who are accustomed to the conventional small yacht can be obtained. In this case, the rear hydrofoil 31 becomes the main hydrofoil with a larger load. However, according to the present invention, as described above, the moment due to the movement of the occupant's weight W
From the center of the connecting beam 13 to the two hulls 10A, 10B via the second supporting column 23 to transmit the weight to the two hulls 10A, 10B via the connecting shaft 12 and the two first columns 22. The point is to transmit the light uniformly, so that the connecting beam 13 can be arranged in front of the connecting shaft 12 for implementation. In this case, since the front hydrofoil 41 is the main hydrofoil with a larger load, the front hydrofoil 4
1 must be larger than the area of the rear hydrofoil 31.

In the above embodiment, the occupant support 21
Is composed of a rigid frame 21a forming an outer edge and a cloth 21b having an outer edge attached to the frame 21a and being stretched. In this manner, the occupant support 21
Manufacturing cost can be reduced. However, the occupant support 21 of the present invention may be formed in a plate shape made of FRP or the like.

Further, the first support member 22 is formed by a pair of left and right first support members.
Although the support column 22 is used, the first support member 22 can transmit various moments due to the movement of the occupant's weight W from the rigid deck 20 to the connection shaft 12, so that various other structures are possible. The member 23 is also a single second column 23 whose lower end is supported at the center of the connecting beam 13 so as to be able to tilt laterally. The second supporting member 23 shifts the weight W from the center of the connecting beam 13 to both hulls 10A, Various other structures are possible because it is necessary to transmit the information evenly to 10B. However, the first support member 2
The second and second support members 23 having the above-described structure are the simplest and easy to implement.

In the above embodiment, each of the L-shaped rear struts 3 provided with the rear hydrofoil 31 and the wheel 33 at the tip of each arm.
0 is rotatably attached to each of the hulls 10A and 10B, and then a stopper 35 for locking the strut 30 to the rear hydrofoil use position and the wheel use position is connected to the first and second links 3.
6 and 37 are engaged with each other via the stopper pin 37b, even if a force is applied in a direction in which the respective ends of the links 36 and 37 are brought closer to each other, the pivot shaft 38 is opposed to the urging force of the torsion coil spring 39. Since the structure is such that there is no rotational moment for bending the links 36 and 37 as the center, the position of the rear strut 30 does not change even when an external force is applied. In one use state, the stopper 3
The lock can be released and switched to the other use state by simply pushing the pivot shaft 38 of the fifth member with a fingertip in a direction against the urging force of the torsion coil spring 39, and the rear strut 30 can be switched to the other use state. If it is torsion coil spring 39
Automatically locks to that state, so that switching of the use state and locking after the switching can be performed very easily. Since the links 36 and 37 are made of a thin aluminum plate, when the rear strut 30 or the rear hydrofoil 31 hits an obstacle while the catamaran hydrofoil yacht is sailing, the links 36 and 37 buckle. Thus, damage to the rear strut 30 and the rear hydrofoil 31 can be minimized. However, according to the present invention, depending on the use environment, the rear strut 30 is formed integrally with the hulls 10A and 10B,
It is also possible to omit the wheel 33 and carry out.

[0040]

According to the present invention, the rigid occupant support portion of the deck for supporting the occupant is formed so that the portion above the connecting shaft and the connecting shaft do not relatively tilt around the longitudinal axis. (1) a second portion which is connected by the support member and which does not prevent a portion above the central portion of the connecting beam and a central portion of the connecting beam from being inclined with respect to each other around the longitudinal axis;
When the weight of the occupant is moved on the occupant support, the moment for tilting the occupant support is transmitted to the respective hulls from the connection shaft via the first support member. On the other hand, the weight of the occupant itself is transmitted from the second support member to the central portion of the connecting beam, and is equally shared between the left and right hulls. Therefore, by appropriately shifting the weight, the heel moment is balanced, and the upward and downward forces applied to the positions substantially coincident with the connecting axes of the left and right hulls can be made zero. The downward force applied to a position substantially coincident with the connecting beam of the same is the same regardless of weight shift.
As a result, the forces applied to the left and right hulls are the same, and the burden load on the left and right hydrofoil is also the same, so that the efficiency of the hydrofoil can be improved as a whole, and the attitude of each of the left and right hulls is the same Becomes This makes it easy to move to the wing running at the same time even with relatively weak winds, and it is difficult for each hull to land on the water even if the wind becomes weak during the wing running, making it difficult for pitch poles and the like to occur.

In the present invention, the first support member may be a pair of left and right first columns, and the second support member may be a second column whose lower end is supported at the center of the connecting beam so as to be able to tilt laterally. In this case, the structure of the first support member and the second support member of the deck is simplified.

According to the present invention, in which the connecting beam is disposed behind the connecting shaft, a mast similar to a conventional small yacht such as a dinghy is arranged on the front side of the deck 20 on which the occupant rides. A catamaran hydrofoil yacht that is easy to use and easy to use for those who are accustomed to conventional small yachts.

According to the present invention, according to the occupant support portion comprising the rigid frame constituting the outer edge portion and the cloth having the outer edge attached to the frame body, the occupant support portion is provided. Manufacturing cost can be reduced.

In the present invention, one end of the connecting shaft is connected to the center of the connecting shaft, and the other end is connected to the center of the connecting beam so as to be rotatable around the longitudinal axis. Further, the lower end of the mast is supported at the center of the connecting beam 13 by being attached to a portion in front of the portion connected to the connecting shaft of the backbone, and is attached in the middle of the mast and extends downward and left and right. According to what supports the mast upright by attaching each lower end of the mast support to the connecting shaft, the lower end of the mast is attached to the backbone, and each lower end of the mast support is attached to the connecting shaft that does not move relative to the backbone. Therefore, the mounting structure at the lower end of the mast support is simplified, and the wind acting on the sail may affect the operation of each hull. No longer.

In the present invention, each L-shaped rear strut provided with a rear hydrofoil and a wheel at the tip of each arm is rotatably attached to each hull, and the first and second links are connected via locking members. In the engaged state, even if a force is applied in a direction to bring each end of each link closer to each other, a stopper that prevents a rotational moment to bend both links around the pivot shaft against the urging force of the spring, According to the structure in which the rear strut is locked in the rear hydrofoil use position and the wheel use position, the rear strut is locked in that state in each state, and in one use state, the pivot shaft portion of the stopper is spring-loaded. By simply pressing with your fingertip in the direction against the urging force of the finger, the lock is released and you can switch to the other use state and it is automatically locked to the other use state It can be locked after switching the switching state of use very easily.

[Brief description of the drawings]

FIG. 1 is a plan view showing the overall structure of an embodiment of a catamaran hydrofoil yacht according to the present invention.

FIG. 2 is a left side view showing the entire structure of the embodiment shown in FIG.

FIG. 3 is a partially enlarged view showing a connection structure between a connection beam and each hull according to the embodiment shown in FIG. 1;

FIG. 4 is a perspective view showing the structure of the deck of the embodiment shown in FIG.

FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG.

FIG. 6 is a partially enlarged view showing a front part of FIG. 2;

FIG. 7 is a schematic diagram illustrating forces applied to a catamaran hydrofoil yacht according to the present invention and the prior art.

FIG. 8 is a perspective view showing the overall structure of a catamaran hydrofoil yacht according to the related art.

[Explanation of symbols]

10A: right hull, 10B: left hull, 12: connecting shaft, 13
... connecting beam, 14 ... backbone, 20 ... deck, 2
DESCRIPTION OF SYMBOLS 1 ... Occupant support part, 21a ... Frame body, 21b ... Cloth, 22 ... 1st support member (1st support), 23 ... 2nd support member (2nd support), 30 ... Rear strut, 30a One arm, 30b …
The other arm, 31: rear hydrofoil, 32: support shaft, 33: wheel, 35: stopper, 36: first link, 37: second link, 37b: locking member (stopper pin), 38: pivot shaft , 39 ... spring, 40 ... front strut, 41 ... front hydrofoil, 42 ... rudder shaft, 45 ... sensor, 45a ... beam,
45b: sensor plate, 50: steering device, 60: mast,
61 ... mast support, 63 ... sale.

Claims (6)

[Claims] 1. A pair of right and left hulls, each of which has an intermediate portion in the front-rear direction rotatably connected to both ends of a connecting shaft extending in a horizontal direction, and which is disposed in front of or behind the connecting shaft in parallel with the connecting shaft, and has both ends. A connecting beam rotatably connected to at least a longitudinal axis of each hull, and a plate-shaped lower end extending in a front-rear direction extending downward from a front-rear intermediate portion of each hull between the connecting shaft and the connecting beam; A pair of left and right rear struts each having a rear hydrofoil, a pair of right and left rudder shafts provided at the front of each hull so as to be rotatable around a vertical axis and steered by a steering device; A pair of left and right front struts each having a plate-like shape extending in the front-rear direction and having front hydrofoil blades at the lower end, and an upper portion supported at a lower end portion of the rudder shaft so as to be rotatable around a horizontal axis, Thin attached and extending forward A catamaran hydrofoil comprising a pair of left and right sensors having a forwardly rising sensor plate at the tip of a long beam, and a mast having a lower end supported at the center of the connecting shaft and having an upright standing sail. In the yacht, a deck for supporting an occupant includes a flat and rigid occupant support portion that is not in contact with each of the hulls and that is disposed upwardly away from the connection shaft and the connection beam; and the connection shaft and the occupant support. A first support member for connecting a portion of the portion above the connecting shaft so that the two do not relatively tilt laterally, and a central portion of the connecting beam and an upper portion of the central portion of the occupant support portion; A catamaran hydrofoil yacht, comprising: a second support member for connecting the two parts so as not to prevent the two parts from inclining relatively to each other. 2. The catamaran hydrofoil yacht according to claim 1, wherein the first support members are arranged symmetrically with respect to a longitudinal center of the connection shaft with a space between each other, and upper and lower ends thereof are respectively provided. Left and right 1 fixed to the occupant support and the connection shaft
The second support member comprises a pair of first supports, and the second support member has an upper end portion fixed to a center portion in the width direction of the occupant support portion and a lower end portion supported by the center portion of the connecting beam so as to be tiltable in the horizontal direction.
A twin-hull hydrofoil yacht characterized by its struts. 3. The catamaran hydrofoil yacht according to claim 1, wherein the connecting beam is disposed rearward of the connecting shaft. 4. The catamaran hydrofoil yacht according to any one of claims 1 to 3, wherein the occupant support portion has a rigid frame constituting an outer edge, and the frame has an outer edge. A catamaran hydrofoil yacht, comprising a cloth attached and stretched. 5. The catamaran hydrofoil yacht according to claim 1, wherein one end of the yacht is arranged in parallel with each of the hulls, and a central portion of the connecting shaft has one end. The other end further includes a backbone rotatably connected to a central portion of the connection beam around a longitudinal axis, and a lower end of the mast is located forward of a portion of the backbone connected to the connection shaft. A twin-hull hydrofoil yacht, wherein the mast support is attached to a position of the mast, and the lower end of a mast support that is attached in the middle of the mast and extends downward and to the left and right is attached to the connection shaft to support the mast in an upright state. 6. The catamaran hydrofoil yacht according to any one of claims 1 to 5, wherein each of the rear struts has an L-shape when viewed from a thickness direction, and is provided at a tip of one of the arms. A rear hydrofoil is provided, a wheel is provided at the tip of the other arm, and the vicinity of the joint between the two arms is rotatably attached to a middle part of the hull in the front-rear direction via a support shaft extending in the left-right direction. The arm is extended downward and the rear strut is used in both the hydrofoil use position and the wheel use position where the one arm is flipped up and the wheel at the tip of the other arm projects downward from the hull. A stopper that locks to the hull, wherein the stopper has a first link that is pivotally supported at one end on the hull side, and a pivot that is located at a position away from the pivotal position of the first link to the hull; Rotatably connected to and separated from this pivot A second link having one end pivotally supported on the rear strut side, a spring provided between the two links, and biasing the two links to rotate in opposite directions around the pivot shaft; The link is provided on one of the links and engages with a part of the other to receive the urging force of the spring, and is constituted by a locking member. When the locking member is engaged, the ends of the links are connected to each other. A catamaran hydrofoil yacht, wherein when a force is applied in the approaching direction, a rotational moment such as bending the two links around the pivot shaft is not generated against the urging force of the spring. .