JPH0745422Y2 - Inflatable boat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a foldable and portable rubber boat having a transom plate for mounting an outboard motor and having a soft boat bottom in a V shape by interposing a keel or the like. .

(Prior art and its problems) A boat having a hard bottom made of FRP or the like is preferable because it has high stability during high-speed traveling without the occurrence of so-called air draw, but in a rubber boat that can be folded and carried, the hard bottom is portable. Since it is difficult, various improvements have been made to satisfy the high-speed stability equivalent to that of the hard bottom. One of them is described in Japanese Utility Model Publication No. 52-4718 (see FIG. 5).

In this conventional technique, a transom plate 200 is provided between the rear ends of the air cylinders 100, 100 facing each other, and a bottom cloth with the bottom plate 300 is provided.
The keel 500 is placed between 400 and the keel rear end
An air bag 600 having an inverted triangular cross section is interposed between the 501 and the inside of the transom plate 201, and further below the air bag 600 between the bottom cloth 400, a shorter shape in the boat longitudinal direction than the air bag 600. The V-shaped bottom deformation prevention member 700 is interposed to make the bottom of the ship V-shaped.
Between the 500 and the transom plate 200, the air bag 600 and the V-shaped bottom deformation preventing member 700 are used together to maintain the V-shape of the bottom of the transom plate.
Since no dent was formed in the groove, it was possible to prevent the occurrence of so-called air draw (Fig. 5 (a)).

However, in the above-mentioned conventional technique, since the V-shaped bottom deformation preventing member 700 is arranged only in the above-mentioned portion, the generation of the air draw can be prevented as described above, but the keel 500 is arranged when receiving the water pressure during high speed traveling. 400-
Is pushed in a wavy shape and is recessed, and the portion 400 where the air bag 600 and the V-shaped bottom deformation preventing member 700 are arranged is not recessed and the front shape of the air bag 600 (inverted triangular shape in cross section) is set. A phenomenon occurs in which the resistance surface x is formed so as to be orthogonal to the boat traveling direction (FIG. 5 (b)), and the resistance surface x increases the resistance of water and disturbs the flow of water. It had a problem that it caused a reduction in propulsive force, and could not achieve high-speed running stability equivalent to that of a hard bottom.

(Problems to be Solved by the Invention) The present invention has been made in view of the above problems of the prior art, and an object thereof is to fold a boat with a hard bottom without impairing portability. An object of the present invention is to provide a rubber boat that can achieve equivalent high-speed stability.

(Means for Solving the Problems) The technical means made by the present invention to achieve the above-mentioned object includes a transom plate extending between the rear ends of the left and right air cavities facing each other, and between the bottom plate and the bottom cloth. A rubber boat having a keel on the bottom of which a V-shaped cross section is formed, and the front of the bottom cloth has a climbing surface toward the tip of the body. The bottom of the boat is arranged so that it is located on the inner surface of the rising surface above the end and the rear end is located near the inside of the transom plate, and between the keel and the bottom cloth, the bottom of the ship is V-shaped. A deformation preventing member is detachably interposed, and the ship bottom deformation preventing member is a front V-shape capable of folding a pair of long plate members having a length extending from a rising base end portion of a bottom cloth to an inner surface of a transom plate. It is formed by connecting to.

Further, an air keel having a length from the inner surface of the bottom cloth to the inside of the transom plate is provided, and the keel is
It is assumed that only the tip is fixed to the inner surface of the hanging surface and the other portions are not fixed.

(Operation) By the above-mentioned technical means, the entire range from the rising base end of the bottom cloth which is the water contact surface 4 to the inner side surface of the transom plate is formed into a substantially V-shaped cross section, and even if water pressure is applied during high speed running. The vessel bottom shape is maintained substantially V-shaped in cross section, and the vessel bottom deformation preventing member is detached from the boat body and folded and carried during storage.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In the figure, (A) shows a rubber boat, and the rubber boat (A) comprises a rubber boat main body (a) and a bottom deformation preventing member (b).

The rubber boat body (a) is a substantially U-shaped plane (a ₁ ).
A transom plate (a ₂ ) extending between the rear ends of the air cylinders facing each other
And an air keel (a ₅ ) between the bottom cloth (a ₃ ) and the bottom plate (a ₄ ), and the front of the bottom cloth (a ₃ ) is the tip (a ₁ ′) of the air cylinder (a ₁ ). ) Is formed and a rising surface (a ₃ ′) is formed.

The air keel (a ₅ ) is expandable and contractible and has a generally known shape, and its tip (a ₅ ′) is the bottom cloth (a ₃ ).
It is fixed to the inner surface of the run-up surface (a ₃ ′) by a known means such as adhesion or fusion, and is free to move except for its tip (a ₅ ′).

Further, a wood keel may be detachably provided instead of the air keel (5).

Ship bottom deformation preventing member (b) is an FRP that does not disturb the boat buoyancy at wood or aluminum, etc., over the uplink proximal end of the bottom fabric _{(a 3) (a 3 "} ) and transom plate (A ₂ )
A pair of long plate bodies (b ₁ ) (b ₁ ) formed in a longitudinal length extending to the inside (a ₂ ′) of the adjacent end faces (b ₁ ′)
(B ₁ ′) in contact with each other, the bottom base (a ₃ ″) of the bottom cloth (a ₃ ) and the inside of the transom plate (a ₂ ) (a ₂ ′)
And a hinge (in order to form a front V-shape with a vertical length extending over and a horizontal length extending from the V-shaped center line of the bottom cloth (a ₃ ) to the lower parts of the right and left bladders (a ₁ ) (a ₁ ). b ₂ ) …… or rubber cloth,
It is formed to be foldable by connecting with a belt or the like.

The V-shaped angle of the ship bottom deformation preventing member (b) is substantially the same as the V-shaped angle of the bottom cloth (a ₃ ) which bulges into a substantially V-shaped cross section by the expansion of the air keel (a ₅ ), but one example However, the angle is not limited to the illustrated example.

Further, although the drawing shows that the front V-shape can be held in a state where the end faces (b ₁ ′) (b ₁ ′) are in contact with each other, the present invention is not limited to this, and both plates (b ₁ ′) can be held. ) Inflating the air keel (a ₅ ) with a structure that can be folded in both the vertical direction from the connection part of (b ₁ ) (for example, connecting both plates (b ₁ ) (b ₁ ) with a soft leather etc. with a margin). The structure may be such that the front V-shape can be maintained by being pressed downward according to the operation.

However, to explain how to assemble the rubber boat (A) described above, first, lift up the bonded portion of the air keel (a ₅ ) before being filled with air, and then lift the bottom of the inner surface of the transom plate (a ₂ ). The bottom of the ship is deformed by hooking the rear end on the deformation prevention member holding part (a ₆ ) and inserting and supporting both end edges (b ₁ ″) (b ₁ ″) under the air cylinders (a ₁ ) (a ₁ ). The prevention member (b) is set in a V-shape on the front.

Then, the air keel (a ₅ ) that has been lifted up is arranged on the air keel (a ₅ ), and then several plates (a ₄ ′) are provided on the respective edges of the engaging grooves (a ₄ ″). ...... together occupy engage the, when disposing the rearmost end of the plate (a ₄ ') a transom plate (a ₂₎ a bottom plate holding portion provided on the inner surface the upper end of (a ₉₎ and put in engagement with the bottom plate (a ₄₎ , The lower surface of the bottom plate (a ₄ ) abuts on both end edges (b ₁ ″) (b ₁ ″) of the ship bottom deformation preventing member (b).

In addition, a batten (connecting plate) (a ₇ ) is attached to each locking piece (a ₈ ) of the bottom plate (a ₄ ) so that each plate (a ₄ ′) can be prevented from rising and integrated. A bottom plate (a ' ₄ ) is formed.

When air is injected into the air cylinder (a ₁ ) and the air keel (a ₅ ) to inflate the air keel (a ₅ ), the expansion of the air keel (a ₅ ) pushes the bottom deformation preventing member (b) downward to form a V-shape. The bottom plate (a ₄ ) forms the bottom of a ship and the opposite bladders (a ₁ ) (a ₁ ) expand, causing the bottom plate (a ₄ ) to move both end edges (b ₁ ″) (b ₁ ″) of the bottom deformation preventing member (b). Press.

By the way, (b ₃ ) is a reinforcing cloth, which is provided on the deepest V-shaped surface of the bottom cloth (a ₃ ) and has a V-shaped corner vertex (b ₂ ) of the bottom deformation preventing member (b).
By not directly contacting the bottom cloth (a ₃ ),
Alleviate the damage on the bottom cloth (a ₃ ).

In the figure (a ₅ ″) is the air injection part to the air keel (a ₅ ),
(A ₁₀ ) is the front cover.

Further, the storing work is carried out in the reverse order of the above assembling work, and the rubber boat main body (a), the bottom plate (a ₄ ) and the ship bottom deformation preventing member (b) are respectively separated, and the rubber boat main body (a) is contracted and folded to form the bottom plate. each plate constituting the _{(a 4) (a 4 '} ) ......
Can be separately housed and the bottom deformation preventing member (b) can be folded for compact storage.

Further, the ship bottom deformation preventing member is also of a plurality of divided types like the bottom plate (a ₄ ), so that the desired compactness can be further improved when the V-shaped ship bottom is formed.

Therefore, in this embodiment, the vertical length and the bottom extending from the hanging base end portion (a ₃ ″ 9) of the bottom cloth (a ₃ ) to the inner side (a ₂ ′) of the transom plate (a ₂ ). The V-shaped cross section of the entire vessel bottom (portion that comes into contact with water when traveling) in the lateral length range from the V-shaped center line of the cloth (a ₃ ) to the lower parts of the left and right bladders (a ₁ ) (a ₁ ). Since the boat bottom deforming member (b) is interposed, the wavy dents (steps on the bottom) that are likely to occur in a boat whose bottom is made of rubberized cloth due to the water pressure applied when traveling There is no possibility that it will occur, and the propulsive force can be further improved.

(Effect of the Invention) The present invention is provided with a keel having a length from the rising surface of the bottom cloth to the vicinity of the inside of the transom plate, and a pair of lengths extending from the rising base end of the bottom cloth to the inner surface of the transom plate. Since the scale plate is connected to the foldable front V-shape to form the ship bottom deformation preventing member, and the ship bottom deformation preventing member is interposed between the keel and the bottom cloth, even if water pressure is applied at high speed, It is possible to firmly maintain the so-called water contact surface substantially in the V shape from the hanging base of the bottom cloth to the inner surface of the transom plate.

In addition, the part that comes into contact with the water surface during high-speed running is after the rising base end (the part from the rising base end to the transom plate)
Therefore, by making the bottom deformation preventing member from the rising end of the bottom cloth as in the present invention, the tip of the bottom deformation preventing member is not in contact with the water surface, and the tip may form a resistance surface. There is none.

Therefore, as with the prior art, of course, there is no occurrence of air draw, and there is no risk of forming a resistance surface that receives water resistance as in the prior art, resulting in high-speed stability equivalent to that of a hard bottom. In addition to being obtained, it is very useful because it can be folded during storage and transportation without sacrificing portability.

Further, an air keel having a length extending from the inner surface of the rising surface of the bottom cloth to the vicinity of the inside of the transom plate is used, and only the tip of the keel is fixed to the inner surface of the rising surface, and the other portions are not fixed. If this is the case, the cumbersomeness of separately storing and carrying the keel is eliminated, and the foldability and portability are good, and this type of rubber boat is extremely easy to use.

[Brief description of drawings]

FIG. 1 is an overall plan view showing an embodiment of a rubber boat of the present invention with a part cut away, FIG. 2 is a sectional view taken along line (II)-(II) of FIG. 1, and FIG. 3 is shown in FIG. )-(III) line sectional view, 4th
FIG. 5 is an overall perspective view showing an embodiment of a ship bottom deformation preventing member, FIG. 5 shows an embodiment of a conventional technique, (a) is a vertical side view, (b) is a vertical side view, and (c) is hydraulic pressure. FIG. 7 is a vertical cross-sectional front view of the keel disposition portion showing a state of receiving and deforming. In FIG. (A): rubber boats, (a): dinghy body (a _1): kidou, (a _2): transom plate (a ₂ '): transom plate inside (a _3): the bottom cloth, (a ₄ ): Bottom plate (a ₅ ): Keel, (b): Ship bottom deformation prevention member

Claims (2)

[Scope of utility model registration request] 1. A transom plate is provided between the opposite rear ends of the right and left air cylinders, and a keel is provided between the bottom plate and the bottom cloth so that the ship bottom has a substantially V-shaped cross section, and the front of the bottom cloth is A rubber boat in which a rising surface is formed toward the tip of the body, and the keel is formed on the inside of the rising surface above the base end of the keel, and the rear end is near the inside of the transom plate. Each of them is arranged so as to be located respectively, and a ship bottom deformation preventing member for holding the ship bottom in a V shape is detachably interposed between the keel and the bottom cloth, and the ship bottom deformation preventing member is a bottom cloth. A rubber boat, characterized in that a pair of long plate members each having a length extending from the base end portion of the hanging up to the inner surface of the transom plate are connected in a foldable front V shape. 2. An air keel having a length extending from the inner surface of the hanging surface of the bottom cloth to the vicinity of the inner side of the transom plate, and the keel has only its tip fixed to the inner surface of the hanging surface and the other portions are non-stick. The rubber boat according to claim 1, which is in a fixed state.