JP2002012183A - Air boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air boat superior in portability, excellent in boading comfort, having high rigidity of a hull and superior in maneuverability such as course keeping performance, turning performance, sea kindliness and accelerating performance. SOLUTION: In this air boat 1 having an air body 2 formed in a plane U shape over the stern from the bow of a hull, a ship's bottom sheet 3 installed on the air body 2 and an air mat floorboard 4, the air boat is constituted by fixing at least one or more keels 7 and 8 of plural air keels to the air mat floorboard 4 by arranging the plural air keels 6, 7 and 8 so as to be interposed between the ship's bottom sheet 3 and the air mat floorboard 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a needle keeping property, a turning property,
The present invention relates to an air boat which has excellent maneuverability such as wave survivability and acceleration, and has good portability and riding comfort.

[0002]

2. Description of the Related Art Conventionally, an airboat is provided with a bottom plate made of a plate material such as a wooden board, a plywood, and a metal plate, and the rigidity of the boat is maintained by the bottom plate. The main feature of an airboat is that it is convenient to transport because it can fold air and fold it down when not in use. Therefore, for the convenience of folding of the airboat, the bottom plate made of a plate material is generally not formed in a single plate shape, but is formed from a plurality of plate members so as to be divided or foldable.

Further, in order to improve the running performance, an airboat using a hard material such as a wooden board for the floorboard and having one air keel has been developed. However, the part that was not riding on the air keel had poor riding comfort because the impact of the waves was transmitted almost directly to the floorboard.

[0004] In order to absorb the shock of waves and improve cushioning, an airboat having three air keels provided under a hard floor plate such as a wooden board has been developed (Japanese Utility Model Laid-Open No. 59-1409).
No. 87).

However, the above-mentioned floorboards need to be divided or folded when stored, which is troublesome. In addition, wooden boards, plywood, metal sheets, and the like are heavy and inconvenient to carry. Furthermore, since the plate is hard, it has poor cushioning properties, and it is difficult to obtain a good ride quality.

In recent years, in order to solve the above-mentioned problems, lightweight materials such as air mats have been used as bottom plates for the purpose of reducing the weight of an airboat and making it easier to carry. In addition, in an airboat using a bottom plate made of an air mat, a needle holding property equivalent to that of a boat having a hard bottom,
In order to obtain maneuverability such as turning property, wave breaking property, acceleration property, for example, as described in Japanese Utility Model Application Laid-Open No. 62-145791, one air-shaped air keel is provided between an air mat bottom plate and a ship bottom sheet. What is provided is known.

[0007]

However, an airboat using an air mat as a bottom plate can solve the problems specific to a rigid floor plate as described in the above paragraph (0003), but it does not require a metal plate or plywood. There is a problem that the rigidity of the boat is inferior to that of a conventional air boat using a bottom plate. Therefore, the applicant of the present application, for example, JP-A-2000-25684
As described in Japanese Patent Application Laid-Open Publication No. H11-260, an airboat has been proposed in which a reinforcing plate is provided at a position corresponding to a maximum diameter portion of an air keel to improve rigidity. As the reinforcing plate, as a hard and rigid material, specifically, a metal plate, a wooden plate, a plastic plate,
FRP boards reinforced with glass fibers were used.

[0008] The air boat provided with the reinforcing plate can improve the rigidity of the boat to some extent, but has a problem that it is heavy and bulky because the reinforcing plate is made of wood or metal. Further, in this airboat, although the rigidity in the width direction of only the portion where the reinforcing plate is provided is improved, the rigidity in the portion where the reinforcing plate is not provided or the longitudinal direction is not significantly improved. In particular, it has been found that in a large boat having a long overall length, this drawback occurs remarkably, and the wave causes a problem that the entire boat undulates in the front-back direction.

The present invention is intended to solve the above-mentioned drawbacks, and is excellent in portability, good ride comfort, high rigidity of the hull, needle keeping property, turning property, wave breaking property, acceleration property and the like. An object of the present invention is to provide an airboat with excellent maneuverability.

[0010]

SUMMARY OF THE INVENTION The present invention provides (1) an airframe, a bottom sheet attached to the airframe, an air mat floor plate, and a plurality of air keels interposed between the bottom sheet and the air mat floor plate. An air boat according to (1), wherein at least one of the air keels is fixed to the air mat, (2) the air keel fixed to the air mat is detachably attached to the air mat, (3) The air boat according to (1) or (2), wherein the inside of the air mat and the air keel fixed to the air mat communicate with each other, (4) a plurality of air keels are not fixed to the air mat and the width direction of the boat. Any of the above (1) to (3), comprising a main air keel located at the center, and a sub air keel positioned to the left and right of the main air keel and fixed to an air mat. Onboard airboat,
(5) The airboat according to any one of (1) to (4), further including a transom plate at the rear of the hull, wherein the lower side of the transom plate has a shape in which the same number of protrusions as the number of keels are formed. ) The airframe, the bottom sheet attached to the airframe, a floor plate made of air mat, a main keel and a sub keel interposed between the bottom sheet and the air mat floor plate, the main keel is an air keel, and the sub keel is An airboat, characterized in that at least one of the sub keels is fixed to the air mat instead of the air keel, (7) a transom plate is provided at the rear of the hull, and the lower side of the transom plate has the same number of protrusions as the number of keels The airboat according to the above (6), which has a shape in which
Is the gist.

The keel that is not an air keel described in (6) above is, for example, a pipe made of rubber, synthetic resin, metal, or the like, a substantially columnar shape, a substantially triangular prism shape, or the like. Say something that does not change. The non-air keel may be fixed so as not to be detached from the air mat, but may be detachably attached to the air mat and fixed detachably from the air mat.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. As shown in FIGS. 1 and 2, an airboat 1 of the present invention has an airframe 2 formed in a plane U shape from a bow to a stern of a hull, and a bottom sheet attached to the airframe 2.
3, an air mat floor plate 4, and a plurality of air keels (6, 7, 8) interposed between the bottom sheet 3 and the air mat floor plate 4, and a transom plate 5 is provided at the stern.

In the airboat of the embodiment shown in FIGS. 1 and 2,
The air keel is one main air keel 6 which is a streamlined air cylinder formed entirely in the center of the hull width direction along the longitudinal direction of the hull, and two main air keels 6 located on the left and right sides of the air keel 6 and fixed to the air mat. There are a total of three sub air keels 7 and 8.

The main air keel 6 is provided with a plug 9 on the center upper surface of the tip portion, and a through hole 10 in a corresponding portion of the air mat floor plate 4. As shown in FIG. 8, the main air keel 6 is located between the air mat floor plate 4 and the bottom sheet 3, and is attached so that the air mat floor plate 4 and the plug 9 can be pulled out and air can be injected into the interior. Although the rear end of the main air keel 6 is joined to and integrated with the transom plate 5, it is not fixed to the air mat floor plate 4 and the bottom sheet 3.

FIG. 3 shows the back side of the air mat floorboard of the airboat shown in FIGS. In the airboat of the embodiment shown in FIGS. 1 and 2, two sub air keels 7, 8
Is fixed to the back side of the air mat floor plate 4 as shown in FIG. Also, auxiliary air keels 7, 8 and air mat floorboards 4
Are communicated with each other through communication portions 71 and 81, and are formed so that the air inside can communicate with each other. The main air keel 6 is not fixed to the air mat floor plate 4. In the present invention, the fixation means that the air keel is integrated so as not to come off from the air mat floor plate 4 in a normal use of the air boat.

In the air boat of the present invention, the air body 2 is preferably made of a flexible sheet material having a small elongation and air tightness, similarly to a conventional air boat, and is formed of, for example, rubberized cloth, vinyl tarpaulin, vinyl leather, or the like. Is done.

The bottom sheet 3 is made of a rubberized cloth, vinyl tarpaulin, vinyl leather, or the like, similarly to the one used in a conventional air boat. In addition, the ship bottom sheet 3 is usually bonded to the bottom periphery of the airframe 2.

The air mat floor plate 4 is formed by laminating two air-tight flexible sheets or base cloths, and bonding at least the periphery thereof by bonding with an adhesive or high-frequency fusion to control swelling. Can be used as necessary, and the inside of which has an airtight structure can be used. As the flexible sheet material constituting the floor plate made of an air mat, a material having a small elongation is used so as to have sufficient rigidity when the internal air pressure is increased. Examples of such sheet materials include rubberized cloth, vinyl tarpaulin, vinyl leather sheet, and the like. Examples of the material of the base fabric include an airtight laminate obtained by coating the surface of a woven fabric with rubber, resin, or the like, or attaching a rubber, resin sheet, or the like.

As shown in FIG. 4, the air mat floor plate 4 uses a three-dimensional structural cloth in which opposing upper woven cloth 41 and lower woven cloth 42 are connected at appropriate intervals by a large number of connecting yarns 43. On the outer surface side of the upper woven cloth 41 and the lower woven cloth 42, waterproof layers 46 and 47 are formed by applying a coating of resin, rubber, etc., or pasting a resin, rubber sheet, etc., to form an airtight laminate. Using the upper base cloth 48 and the lower base cloth 49 formed as a body, the peripheral joint portion of the upper woven cloth 41 and the lower woven cloth 42 is air-tightly processed with a side seal material 44 or the like, and an air sealing port 45 is provided at an appropriate place. It is preferable to use an air mat formed so that air can be enclosed therein. Although not shown in FIG. 4, a plug is provided at the air filling port 45.

The air mat floor plate 4 using the three-dimensional structural cloth is excellent in rigidity because the upper woven fabric 41 and the lower woven fabric 42 are connected by a large number of connecting yarns 43. The air mat can be formed almost flat without forming a concave groove by the hanging cloth on the upper and lower surfaces and does not impair the original cushioning property of the air mat.

The three-dimensional structural cloth may be a double-walled cloth in which the upper woven cloth and the lower woven cloth are connected in advance by a number of connecting yarns of a fixed length, or a separate upper woven cloth and lower woven cloth may be used. The woven fabric may be sewn so that a connecting thread is sewn later.

As the side seal material 44, for example, a sheet, tarpaulin,
Waterproof leather pulling or the like is used. Then, as shown in FIG. 4, on the peripheral portions of the upper base cloth 48 and the lower base cloth 49, the side seal material 44 is a device such as a high-frequency welder device, a hot air welder, or a hot plate welder. Glued to be sealed.

The air mat floor plate 4 shown in FIG. 4 is formed such that the ends of the upper base cloth 48 and the lower base cloth 49 are joined to the side seal material 44 in a state where the peripheral edge is open, so that the inside is airtight. However, after joining the upper woven fabric and the lower woven fabric by sewing or the like without using a side seal material, for example, by forming a waterproof layer on the surface, the peripheral portion of the upper base fabric and the lower base fabric is The two members may be directly joined to each other to be sealed, or as shown in FIG. 5, a side seal member 44 may be further provided around the periphery of the upper base cloth 48 and the lower base cloth 49.

In the present invention, the air keels such as the main air keel 6 and the sub air keels 7, 8 are formed using an airtight sheet material. The sheet material is
As in the case of 2, a flexible sheet material having a small elongation and airtightness is preferably used. Examples of such a flexible sheet material include rubberized cloth, vinyl tarpaulin, and vinyl leather.

The shape of the air keel may be any shape of the main air keel and the sub air keel, as long as the shape is suitable for maneuverability such as needle keeping, turning, wave surpassing, acceleration, etc. Usually, a long tube is used. Can be Also, as shown in FIG. 1, the main air keel 6 gradually increases in diameter from the bow to the start of warping of the airframe, and has a maximum diameter at the start of warping s of the airframe, and the warping start of the airframe. It is preferable to form the shape such that the diameter gradually decreases from the stern to the stern. The sub air keel is formed in a shape similar to the main air keel, but is usually formed smaller than the main air keel.

The auxiliary air keels 7, 8 are fixedly attached to the air mat floor plate 4 integrally. In the present invention, at least one of the plurality of air keels only needs to be attached to the air mat floor plate, but as shown in FIG. 1, the main air keel is not fixed to the air mat floor plate, and the sub air keel is fixed to the air mat. Is preferred.

When the air keel is fixed to the air mat floor plate, the air keel may be integrated so as not to be detached from the air mat floor plate, or may be detachably attached so as to be arbitrarily detachable from the air mat floor plate. Also, when installing the air keel detachably,
The air keel and the floor plate made of an air mat may be formed in an airtight structure independent of each other, or may be formed as a structure in which the inside communicates with each other so that the air inside can be circulated.

When the air mat floor plate and the air keel are configured so as to have an independent airtight structure, there is no danger of air leaking from a joint portion between the two, which is advantageous in terms of airtightness. The workability is inferior due to the necessity of separate encapsulation and removal.
On the other hand, when the air keel and the floor plate made of the air mat are formed so as to be able to communicate with each other, air can be sealed or extracted from one side when assembling or disassembling, so that there is an advantage that the handling efficiency is excellent.

When the air keel is fixed to the air mat floor plate so that it cannot be removed, various joining means can be used depending on the material of the air keel or the air mat floor plate. For example, there is a method of joining using an adhesive.

The following method may be used as a method for detachably fixing the air keel from the floor plate made of the air mat. As shown in FIG. 9, a plurality of belt members 19 are provided at appropriate locations on the lower surface side of the air mat
Or, 8 can be detachably fixed. In this case, the number of the belt members 19 is not limited to three. Attachments such as velvet fasteners, snaps, buttons, etc. may be provided at predetermined locations on the air mat floor plate 4 and / or the air keels 7, 8 so that they can be detachably attached. In addition,
The attachment of the air keel is not limited to the above-described means, but any means may be used as long as the air keel is securely fixed to the floor plate made of the air mat and there is no inconvenience of moving when using the air boat.

When the air keel communicates with the inside of the floor plate made of the air mat, a joint is used in which the communicating portion has an airtight structure. For example, as shown in FIG. 6, two donut-shaped sheets 11a and 11b each having an opening 14 in the center as a joint structure in a case where an air keel and an air mat floor plate are made to communicate with each other so that they are not removable. Member having a sewing portion 12 formed by sewing the inner peripheral side of
There is a method using 13.

As shown in FIG. 7, one donut-shaped sheet 11a of the joining member 13 is joined so that the opening 14 of the sheet fits with the communicating portion 15 of the air mat floor plate 4, and the other donut-shaped sheet 11a is joined. The sheet 11b is joined to the communication portion of the auxiliary air keel 7 or 8 (corresponding to the communication portions 71 and 81 in FIG. 3). Since the joining member 11 moves freely on the outer peripheral side of the sewn portion 12, even when the air is injected into the air keel, the outer peripheral side of the joining member 13 expands and follows even if the joining member 11 is formed in a cylindrical shape. In order to maintain the airtightness of the joint, as shown in FIG. 7, an airtight sheet 16 is provided around the inner side of the air keel and the connecting portion 15 of the air mat floor plate.
To join.

In the airboat, the air body, the floor plate made of an air mat, and the air keel are provided with air inlets, and each is provided with a plug 9. As shown in FIG. 10, for example, as shown in FIG. 10, a middle cap 21 provided with a check valve 20 and an outer cap 22 which closes the tip of the middle cap 21 and is detachably formed are detachably formed on a stopper base 23. The plug base is bonded and integrated with the rubber base 24. Further, the cap 9 is provided with a cap fixing member 25 that holds the outer cap 22 and the middle cap 21 and integrally forms a packing 27 interposed between the washer 26 and the rubber base 24. . An O-ring 28 is interposed between the middle cap 21 and the plug base 23, and a packing 29 is provided on the inner surface of the outer cap 22.

When air is injected into, for example, an air keel using the plug 9, if only the outer cap 22 is removed and the air is injected, the air inside is held by the check valve 20. Also, when folded after use, the middle cap with check valve 20
By removing 21, the air in the air keel is discharged. The cap fixing member 25 provided on the spout 9 is
And the middle cap 21 can be held, and the cap can be prevented from being lost when the cap is removed.

In the airboat of the present invention, the transom plate 5
As shown in FIG. 12, the central portion 51 where the main air keel is located, and the portions 53 and 54 where the sub air keels are located between both end portions 52a and 52b where the bottom of the cylinder is located are convexly projecting in the bottom direction. It is preferable to form so as to have a portion. By forming in this manner, the bottom cloth of the air keel portion projects in the bottom direction when the air boat is assembled.

When the outboard motor is mounted on the transom plate 5 at the rear of the airboat, the bow of the airboat is raised and the stern is lowered, and the lower side of the transom plate 5 is submerged in the water. In this case, the bottom sheet 3
Is fixed to the bottom of the cylinder 2 and the lower side of the transom plate 5, and the bottom sheet 3 and the air mat floor plate 4
And the portions where the air keels 6, 7, 8 exist in the front-rear direction and protrude toward the bottom. This bottom sheet 3
When the airboat is in the running state, it is gradually lifted in the direction of the air mat floor plate by the water pressure from below the ship bottom. As a result, between the auxiliary air keel 7,8 and the left and right cylinders 2,2,
And the bottom sheet between the main air keel 6 and the sub air keels 7, 8 is lifted upward and becomes concave, and the air keel 6,
The portions 7 and 8 are convex. Since the lower side of the transom plate 5 is also formed to have a convex portion corresponding to the shape of the ship bottom sheet 3, the water flow smoothly flows backward without staying at the lower end portion of the transom plate. as a result,
The effect as a keel is greater and the running performance is improved.

When assembling the airboat 1 shown in FIG.
First, the main air keel 6 without air is set in the bottom seat 3 and then the air mat floor plate 4 with the sub air keels 7, 8 attached between the left and right air bodies 2, 2 is spread over the air body 2, Fill the air. Next, the plug 9 of the main air keel 6 is pulled out from the through hole 9 provided in the bottom plate 4 made of the air mat, and air is sealed into the main air keel 6 from the plug 9 to complete the assembly.

In the airboat of the present invention, the plurality of air keels are formed as long and thin tubes extending in the forward and backward directions of the airboat, and at the bottom of the airboat located underwater, the bottom seat of the portion is formed by water pressure.
3 projects to the bottom. And because of the presence of multiple keels, this protrusion appears multiple times, and the effect of the keel increases when a force is applied from the side at the bottom of the boat,
The turning property and the self-preservation property are improved. In particular, it is possible to effectively prevent the swell that occurs in the longitudinal direction of the hull, which is likely to occur in the case of an air boat having a long overall length.

[0039]

As described above, the airboat according to the present invention comprises a fuselage, a bottom seat attached to the fuselage,
By adopting a structure that consists of an air mat floor plate and a plurality of air keels interposed between the bottom sheet and the air mat floor plate, at least one of the air keels is fixed to the air mat, so that the whole boat is Prevents swelling and provides an airboat with excellent portability, good ride comfort, high rigidity of the hull, and excellent maneuverability such as needle keeping, turning, surfing, and acceleration. .

When the air keel fixed to the air mat is formed to be detachable from the air mat, the air keel can be easily repaired.

When the air mat and the air keel are formed so as to communicate with each other, a plug can be provided in one of the air mats and air can be injected or discharged from one of them, so that the operation can be easily performed. There is.

When the transom plate is formed so that the lower side has the same number of protrusions as the number of keels, the effect of the keel increases, and the performance such as the turning property and the needle keeping property is improved.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an airboat of the present invention.

FIG. 2 is an end view of an AA line cut surface of the air boat shown in FIG.

FIG. 3 is a perspective view of an air mat floor plate to which the sub air keel is fixed in the air boat shown in FIG. 1, as viewed from the back surface side.

FIG. 4 is a sectional view showing an example of an air mat floorboard.

FIG. 5 is a cross-sectional view of a peripheral portion showing another example of an air mat floorboard.

FIG. 6 is a perspective view showing an example of a joint member at a joint portion when an air keel and an air mat floor plate have a communicating structure.

FIG. 7 is an explanatory view showing a state in which an air keel is attached to an air mat floor plate so as to be able to communicate with the floor board.

FIG. 8 is an explanatory view showing an attached state of a main air keel.

FIG. 9 shows one of means for fixing the air keel to the air mat.
It is explanatory drawing which shows an example.

FIG. 10 is a sectional view showing an example of a plug.

FIG. 11 is a front view showing the appearance of one example of a transom plate.

[Explanation of symbols]

 1 Air boat 2 Airframe 3 Bottom seat 4 Air mat floor plate 5 Transom plate 6 Main air keel 7 Secondary air keel 8 Secondary air keel 9 Spout 10 Through hole

Claims (7)

[Claims] An air mat includes a body, a bottom sheet attached to the body, an air mat floor plate, and a plurality of air keels interposed between the bottom sheet and the air mat floor plate. An air boat characterized by being fixed. 2. An air keel fixed to an air mat,
2. The airboat according to claim 1, wherein the airboat is detachably attached to the air mat. 3. The air boat according to claim 1, wherein the air mat and the inside of the air keel fixed to the air mat communicate with each other. 4. A plurality of air keels, comprising: a main air keel which is not fixed to an air mat and is located at the center in the width direction of the boat; and a sub air keel which is positioned to the left and right of the main air keel and is fixed to an air mat. Item 3. An air boat according to any one of Items 1 to 3. 5. The airboat according to claim 1, wherein a transom plate is provided at a rear portion of the hull, and the lower side of the transom plate has a shape in which the same number of protrusions as the number of keels are formed. 6. A airframe, a main keel and a sub keel interposed between the airframe and a bottom plate attached to the airframe, a bottom plate made of an air mat, a bottom sheet and the air mat floor plate, and the main keel is an air keel. An air boat, wherein the auxiliary keel is not an air keel, and at least one of the auxiliary keels is fixed to an air mat. 7. The airboat according to claim 6, wherein a transom plate is provided at a rear portion of the hull, and a lower side of the transom plate has a shape in which the same number of protrusions as the number of keels are formed.