JPH0634230Y2 - Inflatable boat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention has a body provided with an airtight cloth such as rubberized cloth and vinyl tarpaulin. The present invention relates to an inflatable boat used as an inflatable kayak.

[Conventional technology]

Conventionally, for example, as an inflatable boat having an air cylinder provided with an airtight cloth such as rubberized cloth and vinyl tarpaulin, a bottom cloth to be attached to the bottom of the air cylinder and an air bottom composed of many air tubes are integrated. There is something.

Specifically, the width of the peripheral portion of the air bottom formed around the air tube is widened and the peripheral portion is adhered to the bottom of the air cylinder.

At the bottom of this port, the lower half of each air tube, which has a semi-circular cross section, is arranged in a protruding state, and the peripheral edge of the air bottom in the boat front-back direction flows into the boat. A predetermined number of drain holes for automatically draining the generated water are simply formed.

[Problems to be solved by the device]

By the way, in the conventional inflatable boat, since the bottom cloth and the air bottom made of the air tube are integrated as described above, for example, when the air tube of the air bottom is filled after the air is filled in the air cylinder. As the air tube swells, the side portions of the air cylinder are mainly pulled inward, and the front and rear portions of the air cylinder are strongly pulled and deformed, which results in a boat with poor traveling performance.

In addition, since the back of the air bottom is also exposed as a bottom cloth in this way, it is easily scratched during use and the frequency of damage is relatively high. Because it was glued and integrated, the entire boat had to be replaced if the damage to the air bottom was irreparable.

Furthermore, since the lower half of each air tube having a semicircular cross section as described above is arranged in a protruding state on this air bottom, water flow from the traveling direction inevitably occurs when traveling. Abutting on the protruding part of the air tube,
As a result, the resistance of water when traveling was increased and the runnability of this boat was further deteriorated.

Furthermore, since the drainage holes that automatically drain the water that has flowed into the boat are simply formed in the peripheral portion of the air bottom in the boat front-rear direction, when waves etc. collide during traveling. There was also a risk that water would flow back into the boat from this drain hole.

The present invention has been made in the background of such a conventional technique, and can prevent the deformation of the air cylinder, improve the running property of the boat, improve the maintenance of the boat, and prevent water from entering into the boat through the drain hole. An object of the present invention is to provide an inflatable boat capable of reducing backflow.

[Means for Solving the Problems]

According to the present invention, a bottom cloth is covered on the bottom of the body of the boat, and the bottom cloth has a tube connecting recess at the connecting position of each tube, and adjacent tubes are connected continuously or An inflatable boat characterized in that an air bottom formed by a number of discontinuous air tubes is removably attached to the inflatable boat, wherein the air bottom is arranged in at least one of a plurality of vertical tubes and the front and rear portions of the boat. And a water drainage hole is formed in at least one of the boat front and rear portions of the bottom cloth and at a position relative to the tube connection recess formed at the connection position of the horizontal tube in the air bottom. The present invention provides an inflatable boat characterized by the above.

[Action]

In the inflatable boat of the present invention, for example, when the air tube of the air bottom is filled after the air is filled in the air cylinder, the air bottom inflated by the air charge pushes the side of the air cylinder outward. At the same time, push the bottom cloth downward and spread it.
Therefore, conventionally, it is possible to prevent the deformation of the body caused by the side portions of the body strongly expanding inward and the front and rear portions of the body strongly expanding downward due to the air filled in the air tube.

Further, since the bottom cloth which is spread smoothly is arranged on the bottom surface of the boat which is in contact with the water flow, the resistance of water during traveling can be reduced and the traveling performance of the boat can be improved.

Further, if the air bottom is damaged, only this air bottom can be replaced, and therefore maintenance of the boat can be improved.

Furthermore, since at least one of the boat front and rear portions of this bottom cloth, and the water drain hole is formed at a position relative to the tube connecting recess formed at the connecting portion position of the horizontal tube of the air bottom, The water that has flowed into the boat is discharged to the outside from the tube connection concave portion of the air tube through the drain hole, and if the water flows back into the boat from the drain hole, for example, when a wave collides. This backflowing water is temporarily stored in the tube connecting recess, which is an air pocket-like void, while the water stored in the tube connecting recess is discharged through the water drain hole when, for example, corrugation is performed. Backflow of water from the vent hole into the boat can also be reduced.

〔Example〕

Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings, but the present invention is not limited to this embodiment.

Incidentally, in describing this embodiment, an inflatable kayak, which is a kind of boat for going down the river, will be taken as an example.

As shown in FIG. 1, the inflatable boat according to the embodiment of the present invention has a bottom cloth 2 on the bottom portion 10a of the body 10 of the boat.
An air formed by a plurality of air tubes 30 each of which is covered with 0 and has a tube connecting recess 31 at the connecting position of each tube on the bottom cloth 20 and which are adjacent or continuous to each other. The bottom 40 is detachably attached.

As shown in FIGS. 2 and 3, the body 10 is a floating member of an inflatable boat, which is formed by joining and combining a rubberized cloth into a circular floating ring.

This rubberized cloth is a water resistant sheet, and in this embodiment, both sides of a cloth layer such as woven cloth, non-woven cloth or knitted cloth are laminated with a rubber layer such as natural rubber or styrene-butadiene rubber in a sandwich form. Although formed, it may be made of any other material as long as it has water resistance.

As shown in FIG. 4, the bottom cloth 20 has a bottom portion 10 of the body 10.
In the bottom member of the inflatable boat covered with a, in this embodiment, the same rubberized cloth as the body 10 is used as the main material, but in addition to this, the same water resistance as in the case of the body 10 is used. It may be made of any other material as long as it has it.

In order to improve the wear resistance of the boat and the rigidity of the sliding surface, for example, a polyurethane reinforcing layer may be laminated on at least the bottom surface of the bottom cloth 20.

Further, in the embodiment of the present invention, the bottom cloth 20 is at least one of the front and rear portions of the boat, and as shown in FIG. 1, it is opposed to the tube connecting concave portion 31 formed at the connecting portion of the air tube 30. A drain hole 50 is formed at the position.

The drain holes 50 are holes for automatically discharging the water flowing into the boat to the outside. In this embodiment, as shown in FIG.
Although it is formed individually, it is not always necessary to form it on the boat front part and the boat rear part of the bottom cloth 20 in this way, and it is sufficient if it is formed on at least one of the front and rear parts of the bottom cloth 20 on the boat front and back. Can be any number.

In this embodiment, the specific drainage holes 50 are formed at the front and rear portions of the bottom cloth 20 in the boat, and the vertical tubes 32, which will be described later, arranged in the boat front and rear direction shown in FIG. The relative positions of the tube connecting recesses 31 between the large-diameter lateral tubes 331 and between the large-diameter lateral tubes 331 and the small-diameter lateral tubes 332. By forming the drain holes 50 at such positions, these drain holes 50 are provided at the front and rear portions of the bottom cloth 20 in a relative position with the predetermined tube connecting recesses 31 formed between the vertical tubes 32. As compared with the case where it is formed, the volume of water that can store water in the tube connection concave portion 31 is small, so that the efficiency of draining backflow water is good.

Further, these water drain holes 50 are positions other than the relative positions of the connecting recesses of the horizontal tube, for example, at least the boat front part of the boat front and rear part, and a predetermined position if the backflow of water is difficult to occur. It may also be formed at a relative position between the vertical tubes 32 and the tube coupling recess 31.

The air tube 30 is a floating member of the boat together with the air cylinder 10 as shown in FIG. 1 and constitutes the air bottom 40 shown in FIG. 2 as described above.

The air tube 30 is composed of a number of vertical tubes 32, which are the main body, and two sets of horizontal tubes 33, one set for each of the front and rear portions of the boat.

In addition, in this embodiment, the vertical tube 32 and the horizontal tube 33 are divided by a hanging cloth having a communication hole (continuous tube), but it is not necessarily limited to such a structure, and for example, a communication structure may be used. Independent vertical tube without
It may be a tube composed of 32 and the horizontal tube 33 (discontinuous tube).

These vertical tubes 32 are long tubes whose tube axial direction, which is the main body of the air bottom 40, is oriented in the boat length direction.

In addition, these horizontal tubes 33 are short tubes that are connected to both ends of the vertical tubes 32 in the boat length direction, and the tube axis direction is oriented in the width direction of the boat. The large-diameter horizontal tube 331 is connected to the tube 32, and the small-diameter horizontal tube 332 is connected to the tip of the large-diameter horizontal tube 331, but it is not necessary to change the thickness in this way. This is preferable because it can cope with the warp in the front-back direction of the boat. Also,
The air tube 30 may be composed of only the vertical tube 32 that does not communicate with the horizontal tube 33.

The main material of the air tube 30 in this embodiment is
The same rubberized cloth as the body 10 and the bottom cloth 20 is used, but it can be made of any other material as long as it has water resistance like the case 10 and the bottom cloth 20. It may be one.

Further, at the connecting portion position of the air tube 30, the above-mentioned long tube connecting concave portion 31 having a semicircular cross section is formed as shown in FIG.

The air bottom 40 is formed by connecting the air tubes 30 in the above-described predetermined direction as shown in FIG.

In addition, the air bottom 40 in this embodiment is provided on both sides of the air cylinder 10 near the joints with the bottom cloth 20.
Both sides of 40 are inserted and inserted.

In the figure, reference numeral 60 is a backrest cushion, and reference numeral 70 is a fender.

Next, the operation of the inflatable boat according to the embodiment of the present invention will be described.

In the inflatable boat of this embodiment, as shown in FIG. 1, for example, when the air tube 30 of the air bottom 40 is filled with air after the air cylinder 10 is filled with air, the air bottom 40 inflated by this filling is also generated. Pushes the sides of the body 10 outward and pushes the bottom cloth 20 downward. Therefore, conventionally, the deformation of the body 10 caused by the side portions of the body 10 being strongly inflated inward by the air filled in the air tubes 30 and the front and rear portions of the body 10 being strongly pushed downward. Is prevented.

Further, since the bottom cloth 20 that is smoothly spread is arranged on the bottom surface of the boat that is in contact with the water flow, the resistance of water during traveling is also reduced and the traveling performance of the boat can be improved.

Further, if the air bottom 40 is damaged, only this air bottom 40 can be replaced, and therefore the maintenance of the boat can be improved.

Furthermore, in this embodiment, between the longitudinal tubes 32 and the large-diameter horizontal tubes 331, which are the front and rear portions of the bottom cloth 20 and are arranged in the boat front-rear direction, and between the large-diameter horizontal tubes, respectively. The water drain hole 50 is provided at a position relative to each tube connection recess 31 formed between the 331 and each small diameter horizontal tube 332.
Therefore, the water that has flowed into the boat is discharged to the outside from the tube connection recesses 31 through the drain holes 50, and if the waves collide with each other, the water will drain from the drain holes 50 into the boat. When the water flows back to the tube connection concave portion 31 that is an air pocket-like void, the water that flows backward is temporarily stored in the tube connection concave portion 31 when corrugated. Since the water is discharged through the drain holes 50, it is possible to reduce the backflow of water from these drain holes 50 into the boat.

As described above, in the inflatable boat of the embodiment of the present invention, the bottom portion 20a of the body 10 of the boat is covered with the bottom cloth 20, and the bottom cloth 20 is provided at the connecting portion position of each tube. By attaching the air bottom 40 formed by a single or a large number of air tubes 30 having the tube connection recesses 31 so that the air bottom 40 can be freely inserted and removed, it is possible to prevent deformation of the air cylinder 10, improve boat running performance, and improve boat maintenance. You can
In addition, the backflow of water from the water drain hole 50 into the boat can be reduced.

Further, in the embodiment, the water drain hole 50 is formed in the boat front and rear portion of the bottom cloth 20, and between each horizontal tube 33 and each vertical tube 32 and each of the below-described horizontal tubes 33 arranged in the boat front and rear direction. Since the relative positions of the tube connecting recesses 31 formed between the large-diameter horizontal tubes 331 and the small-diameter horizontal tubes 332 are provided, these drain holes 50 are provisionally located in the boat front and rear portions of the bottom cloth 20, In addition, since the volume of water that can store water in the tube connection concave portion 31 is small compared to the case where it is formed at a position relative to the predetermined tube connection concave portion 31 formed between the vertical tubes 32, the drainage efficiency of the backward flow water is improved. Good.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and the present invention includes a design change and the like without departing from the scope of the invention.

For example, in this embodiment, an inflatable kayak, which is a kind of boat for going down the river, has been taken as an example, but the present invention is not limited to this, and can be used for any other inflatable boat such as an inflatable boat for traveling at sea.

[Effect of device]

Since the present invention is such a structure, for example, when the air tube in the air bottom is filled with air after the air is filled in the air cylinder, the air bottom inflated by this air charge causes the side portion of the air cylinder to expand. The bottom cloth is expanded downward by pushing outward or pressing, and therefore, conventionally, the side part of the body of the air tube is inward and the front and rear parts of the body of the body are downward due to the air filling of the air tube. It is possible to obtain an effect that the deformation of the body caused by the strong expansion is prevented.

In addition, since the bottom cloth which is spread smoothly is arranged on the bottom surface of the boat that is in contact with the water flow, the resistance of water during traveling is also reduced, and the effect that the traveling performance of the boat can be improved can be obtained.

Further, even if the air bottom is damaged, only the air bottom can be replaced, and therefore, the boat maintenance can be improved.

In addition, since at least one of the boat front and rear portions of this bottom cloth is formed with a water draining hole at a position relative to the tube connecting concave portion formed at the connecting portion position of the horizontal tube of the air bottom, it is assumed that For example, when water flows back into the boat from the water drain hole when the waves collide, the backflowed water is temporarily stored in the tube connection recess, which is an air pocket-like void. Since the water stored in the tube connection recess is discharged through the water drain hole, it is possible to reduce the backflow of water from the water drain hole into the boat.

[Brief description of drawings]

1 is an enlarged cross-sectional view of an essential part of an inflatable boat according to an embodiment of the present invention, FIG. 2 is a plan view of an inflatable boat according to an embodiment of the present invention, and FIG. 3 is a front view of an inflatable boat according to an embodiment of the present invention. FIG. 4 is a bottom view of the inflatable boat according to the embodiment of the present invention. 10; Air cylinder 10a; Bottom 20; Bottom cloth 30; Air tube 31; Tube connection recess 40; Air bottom 50; Drain hole

Claims (1)

[Scope of utility model registration request] 1. A bottom cloth is covered on the bottom of an air cylinder, which is a main body of a boat, and a tube connecting recess is provided at a connecting position of each tube on the bottom cloth, and adjacent tubes are continuous to each other. Or an inflatable boat in which an air bottom formed by a large number of discontinuous air tubes is removably attached, and the air bottom is formed from a plurality of vertical tubes and a horizontal tube arranged at least one of the front and rear portions of the boat. In addition, the drainage hole is formed in at least one of the boat front and rear portions of the bottom cloth and at a position relative to the tube connection recess formed in the position of the horizontal tube connection portion of the air bottom. And inflatable boat.