JP2555727Y2 - Amphibious boat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amphibious boat used as a vehicle that can run on water and on land.

[0002]

2. Description of the Related Art Conventionally, as an amphibious boat of this type, a watercraft is mainly used for land-based running, and a watercraft is used for secondary use.
As shown in the figure, even when sailing on the water, the wheel b is in a state of traveling on land, that is, in a state of protruding outside the hull a,
Alternatively, even when the wheel b is stored in the hull a, the notch opening c is kept as it is, and the wheel b is made to travel while being exposed to the water d. Almost.

[0003]

However, in the above-mentioned prior art, the wheel b for land traveling is mounted on the hull a
Because it protrudes outward, or is exposed to the water d even when it is stored in the hull a, the wave-making resistance during sailing on the water is large, and this becomes the propulsion resistance. Great propulsion is required.

In view of the above, the present invention provides a recess for accommodating wheels for land traveling in a boat, and covers the notch openings on the front, rear, left and right sides of the hull according to the shape of the hull after the wheels are stored. The aim is to reduce the propulsion resistance.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a hull having a hull-shaped overhanging portion on the bottom surface on each of the right and left sides, for inserting and removing wheels on both front, rear, left and right sides. A notch opening is formed, and a wheel storage recess is provided at an inner position above the notch opening so that the wheel can be raised and stored. After storing the wheel in each wheel storage recess, the notch opening is formed. The cover for closing the hull hull outer plate has an overhang so that when the notch opening is closed, the cover conforms to the overhang of the hull outer plate without any step. Along with the integrated structure molded in accordance with the shape, so that the entire periphery of the cover can contact the edge of the notch opening, the entire periphery of the cover,
A sealing device for sealing a contact surface with the edge of the notch opening is attached, and an upper end of the cover is hingedly attached to a hull outer panel at an upper edge position of the notch opening so as to be openable and closable. Further, between the inside of the cover and the hull inside the notch opening, both ends of a center-bend type stay arm that is constantly urged to extend are detachably attached,
By pulling a rope having its tip detachably attached to the cover from the inside of the hull, the cover is rotated around the attachment point at the upper end and closed.

[0006]

[Function] During water navigation, the wheels are stored in the wheel storage recess,
When the integrated cover attached to the hull skin is closed, the notch opening of the hull skin is covered with one cover, and there is no step with respect to the hull skin. However, the water flow along the boat hull becomes smooth when sailing on the water, and the wave-making resistance is significantly reduced. This reduces propulsion resistance. Opening the cover, removing it from the hull skin, and lowering the wheels allows for land travel.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show the entire amphibious boat according to the present invention, and FIGS. 4 (a) and 4 (b) show details of the main parts.
Basically, as shown in FIGS. 1 to 3, the front and rear and left and right sides of the hull 1 are used for exchanging left and right front wheels 2 and left and right rear wheels 2 for land running, overhanging each wheel 2, and the like. A wheel storage recess having a width and depth sufficient to raise and store the wheel 2 is formed in the notch opening 3 formed on both sides, and the wheel 2 is stored in the wheel storage recess. The opening 3 is entirely covered with a cover 4, and the hull shell 1a
Is made smooth in the front-rear direction even at the position of the notch opening 3.

More specifically, a position where the wheels 2 do not protrude outward (downward) from the hull 1 inside the hull 1 which is located above each notch opening 3 of the hull outer panel 1a. It forms a wheel storage recess 5 of a width and depth that can be raised and stored. After the wheels 2 are lifted and stored in the wheel storage recesses 5, the cover 4 for closing the cutout openings 3 communicating with the wheel storage recesses 5 is shown in FIG.
(B) and as shown in FIGS. 1 and 2, the shape of the hull outer panel 1 a, that is, the shape in which the overhanging portions 6 are provided in the bottom of the right and left sides of the hull 1 in a hull shape in parallel in the front-rear direction. The entire peripheral surface 4b is formed in a box shape having an overhang portion 4a and corresponding to the peripheral edge of the cutout opening 3 of the hull outer panel 1a.
The cover 4 is arranged in the notch opening 3 and the entire peripheral surface 4b is brought into contact with the edge of the notch opening 3 so that the notch opening 3 is in a watertight state. At the same time that the cover 3 is closed, the outer surface of the cover 3 matches the outer surface of the hull outer panel 1a without any step, and the overhang 4a matches the overhang 6 of the hull outer panel 1a in the front-rear direction.

At a plurality of locations on the upper end 4c of the cover 4, hooks 8 are attached to the front (on the side of contact with the notch opening 3), while the hook 8 is attached to the notch opening 3 of the hull shell 1a. On the inside of the upper edge position, a detachable hinge 9 which allows the hook 8 to be inserted / removed is attached and a seal plate 10 is attached, and the hook 8 of the cover 4 is hooked on the detachable hinge 9. Cover 4 makes the hull shell 1a
, The pivoting (opening / closing) operation can be performed with the slip hinge 9 as a fulcrum, and the hull 1 inside each of the notch openings 3 is provided with a bracket 1 at a required position which does not interfere with the wheels 2.
1 and sheaves 12, 13, 14, 15, and 16 are attached, and a bracket 17 is attached to the cover 4 corresponding to the bracket 11 so as to be bent at the center. Both ends of the arm 18 are detachably attached to the brackets 11 and 17 so that the stay arm 18 is always extended by a spring 19 attached to a central portion, and further, is wound around a drive unit (not shown) in the cab. The rope 20 that is
2, 13, 14, 15, and 16, the tip is detachably connected to the cover 4, and the rope 4 is pulled by a driving device so that the cover 4 is opened and the hinge 9 is inserted.
, And the cover 4 is closed by bending the stay arm 18 against the spring 19 so that the notch opening 3 can be covered with the cover 4.

When sailing on the water, the cover 4 is previously placed on the notch 3 of the hull shell 1a on land, and the hook 8 of the cover 4 is engaged with the pull-out hinge 9 of the hull shell 1a. After the joining, the both ends of the center-bend type stay arm 18 are pivotally attached to the bracket 11 on the hull 1 side and the bracket 17 on the cover 4 side so as to be detachable, and further, each of the sheaves 12, 13, 1
Cover the end of the rope 20 hung on 4, 15, 16
To the lower position of Since the stay arm 18 is extended by the force of the spring 19, the cover 4 is held at the open position shown by the two-dot chain line in FIG. At this time, since the stay arm 18 and the rope 20 are at positions where they do not interfere with the wheels 2, the wheels 2 when entering underwater from the land are not used.
There is no hindrance to running by.

When the hull 1 is floated by buoyancy from the land to the water, the wheels 2 are pulled up and the wheel storage recess 5 is lifted.
Then, the lower portion of the cover 4 is pulled toward the hull 1 around the slide hinge 9 by the drive device via the rope 20. As a result, the stay arm 18 is
The cover 4 is closed by being bent against this force, and the packing 7 on the front surface is brought into contact with the peripheral edge of the notch opening 3 to be fixed in a state where watertightness is secured. This state is the state of FIG. 1 and FIG. 2, and it is possible to sail on the water. When sailing on the water, the notch opening 3 is covered with the cover 4 and the outer surface of the cover 4 is
a, the water flow along the hull outer plate 1a flows more smoothly on the outer surface of the cover 4 than in the case where the vehicle is sailed with the wheels left outside the hull, so that wave-making resistance is significantly reduced. This can be reduced to reduce propulsion resistance.
Further, since watertightness is ensured between the notch opening 3 of the hull outer panel 1a and the cover 4, when the cover 4 is closed on water, water that has entered the cover 4 remains as it is. The water increases the weight of the hull 1, but as shown in FIG. 5, the hose 21 is set so as to reach from the inside of the hull 1 to the inside of the cover 4.
The water can be drained by a bilge pump (not shown) installed in the inside, so that the weight of the hull when sailing on the water can be reduced. The speed reduction can be achieved by reducing the hull weight and the propulsion resistance.

[0013] When moving from land-based running to land-based running, the rope 20 is loosened by the drive device before entering the land. When the rope 20 is loosened, the stay arm 18
Because it is extended from the folded state by the force of 9, the cover 4
The cover 4 is automatically opened around the slide hinge 9, and the cover 4 is held in the open position shown by the two-dot chain line in FIG. 4A with the stay arm 18 extended. Next, wheel storage recess 5
If the wheel 2 stored in the vehicle is lowered, the user can get on the land as it is. If you move to land, cover 4, stay arm 18
, And also remove the end of the rope 20 from the cover 4 and wind it up.

The slip hinge 9 has been described as being capable of detachably engaging the cover 4 and the hull outer panel 1a. However, if the hinge 4 can be easily attached and detached and does not come off during rotation,
Of course, any structure may be used, and various changes may be made without departing from the scope of the present invention.

[0015]

As described above, according to the amphibious boat of the present invention, notches are provided on both front and rear left and right sides of a hull having a catamaran-shaped overhanging portion on the bottom surface on each of the right and left sides so that wheels can be taken in and out. Each opening is formed, and a wheel storage recess is provided at an inner position above the notch opening so that the wheel can be raised and stored.After storing the wheel in each wheel storage recess, the notch opening is formed. The cover for closing has a projecting portion adapted to the projecting portion of the hull hull so as to match the hull hull outer plate without a step when the notch opening is closed, and the outer surface shape is the shape of the hull hull outer plate. In addition to having an integral structure molded according to the above, the entire peripheral edge of the cover can be brought into contact with the edge of the notch opening, and the entire peripheral surface of the cover has a contact surface with the edge of the notch opening. Attach a sealing device for sealing, and The upper end of the cover is attached to the hull outer panel at the upper edge position of the notch opening so as to be freely openable and closable, and furthermore, is always extended between the inside of the cover and the hull inside the notch opening. Attach the cover to the center of the upper end by pulling from the inside of the hull the rope which detachably attaches both ends of the center-bend type stay arm biased to Since it is configured to be rotated and closed, the following excellent effects can be obtained. (i) If the notch opening of the hull skin is closed with a cover, there will be no step between the hull skin and the cover, so the hull skin will be smooth and the conventional wheels will be The boat sails in a state where it is overhanging, or when the wheels are stored in the hull, the notch openings provided for the wheels are left intact, or when there is a step even if the notch openings are closed. Compared to running, the water flow along the hull skin becomes smoother, the wave-making resistance is significantly reduced, the propulsion resistance can be reduced, and the speed can be increased. (ii) Since the notch opening of the hull outer panel is closed by one cover, the closing operation is easy, and after closing, the hull outer panel can function as a hull outer panel without a gap, and floating substances on the water are stored in the wheel. Can be prevented, and the wheels, axles, and the like can be prevented from being damaged by floating matters. (iii) By draining the water that enters when the notch opening of the hull outer panel is closed with the cover, the weight of the hull can be reduced, and the speed can be increased in conjunction with the reduction in propulsion resistance described in (i) above. Becomes (iv) The cover is detachably attached, so that it can be removed during land running so that no protrusions remain and running on rough roads or narrow roads can be performed without any problem.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which an amphibious boat of the present invention sails on water.

FIG. 2 is a bottom view of the amphibious boat shown in FIG.

FIG. 3 is a side view showing a state of the amphibious boat according to the present invention when traveling on land.

FIG. 4 shows an essential part of the amphibious boat according to the present invention;
(A) is a sectional view taken along the arrow A in FIG. 1 showing a state in which a cover is attached to a cutout opening of the hull outer panel, and (B) is a side view of the cover.

FIG. 5 is a diagram showing an installation example of a hose for discharging water remaining inside when the cover is closed.

FIG. 6 is a diagram showing a state of a conventional amphibious boat when sailing on water.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hull 1a hull outer panel 2 wheels 3 notch opening 4 cover 4a overhang 4b whole peripheral surface 5 wheel storage recess 6 overhang 7 packing (sealing device) 9 pull-in hinge 18 stay arm (cover opening and closing device) 19 spring 20 Rope (cover opening and closing device)

Claims (1)

(57) [Scope of request for utility model registration] 1. A notch opening is formed in each of the front, rear, left and right sides of a hull having a hull-shaped overhanging portion on the bottom surface on each of the left and right sides, for inserting and removing wheels, and an upper inner side of each notch opening. In the position, a wheel storage recess is provided so that the wheel can be raised and stored, and a cover for closing the notch opening after storing the wheel in each wheel storage recess, when the notch opening is closed The hull hull outer plate has an overhanging portion that matches the above-mentioned overhanging portion so that the hull hull outer plate matches the hull outer plate without a step, and the outer surface shape is formed in accordance with the shape of the hull hull outer plate. The entire peripheral edge can be brought into contact with the edge of the notch opening, and on the entire peripheral surface of the cover,
A sealing device for sealing a contact surface with the edge of the notch opening is attached, and an upper end of the cover is hingedly attached to a hull outer panel at an upper edge position of the notch opening so as to be openable and closable. Further, between the inside of the cover and the hull inside the notch opening, both ends of a center-bend type stay arm that is constantly urged to extend are detachably attached,
An amphibious boat characterized by having a configuration in which a rope whose end is detachably connected to the cover is pulled from the inside of the hull so that the cover is rotated around an attachment point at an upper end portion and closed. .