JP6265481B2 - Ship - Google Patents

Description

  The present invention relates to a boat in which the hull is made of a hard urethane foam.

  Conventionally, there is a boat using a hard urethane foam as a part of the hull. For example, in Patent Document 1 below, a front plate (front foot plate) and a rear plate (rear seat plate) which are portions on which a person is placed between two float bodies made of hard urethane foam extending in a rod shape are respectively constructed. An assembled simple boat is disclosed.

JP 08-276890 A

  However, in the assembly-type simple boat described in Patent Document 1, since the front plate and the rear plate on which people and objects are placed are mounted on two float bodies, on the front plate and the rear plate. There is a problem of lack of stability. In addition, in the assembly type simple boat, the amount of the float body sinks below the surface of the water increases due to the weight of the front and rear plates in addition to the weight of people and objects. In order to suppress this, there is a problem that the size of the front plate and the rear plate is limited.

  The present invention has been made to cope with the above problems, and an object of the present invention is to provide a boat that can stably load a load such as a person or a baggage and can navigate smoothly even in shallow water. There is to do.

In order to achieve the above object, the present invention is characterized in that at least one of a bottom made of rigid urethane foam formed with a bottom surface immersed in the water surface and a floor surface on which a person is placed on the opposite side of the bottom surface, And a rigid urethane foam float body disposed at least partially upwardly with respect to the bottom of the ship , and the float body is a rigid urethane foam in an outer shell body in which a sheet material is formed in a bag shape. A hard urethane foam in which the inner space includes at least two or more compartments, and the compartments constitute one compartment between the mutually adjacent compartments. there is in Rukoto not penetrate to the inside of the rigid polyurethane foam which constitutes the other compartment.

According to the feature of the present invention configured as described above, the ship is configured such that the bottom of the floor on which a person is placed is formed of a hard urethane foam, and the periphery of the bottom of the ship made of the hard urethane foam. At least a part of this is provided with a float body made of hard urethane foam. As a result, since the portion of the ship that can carry loads such as people and luggage is the bottom of the ship, the load can be stably placed on the water, and the bottom of the ship itself has buoyancy, so The amount of sinking into the sea can be suppressed, and it is possible to navigate smoothly even in shallow water. In this case, the rigid urethane foam means a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups, a catalyst (for example, an amine compound), a foaming agent (for example, , Water, fluorocarbon, etc.) and foam stabilizer (for example, silicone oil) etc. (hereinafter referred to as “hard urethane material”) to obtain a foaming reaction and a resinification reaction at the same time. Homogeneous plastic foam. The rigid urethane foam in the present invention has a compressive strength (10% compression) of at least 2.0 kgf / cm 2 or more.

Further, according to the feature of the present invention, since the ship is configured such that the float body accommodates the hard urethane foam in the outer shell body in which the sheet material is formed in a bag shape, the outer shell formed in the shape of the float body. By injecting a hard urethane material or the like into the body, the float body can be easily molded, and the molded float body can be protected by the outer skin body to prevent damage and deterioration.

Further, according to the feature of the present invention, since the inner space of the outer skin is configured to include at least two compartments, the boat is filled with a hard urethane material or the like for each compartment in the outer skin. Even if the float body is large, it can be accurately molded.

Further, according to another feature of the present invention, since the ship has a hard urethane foam in one section entering the inside of the hard urethane foam in the other section between the adjacent sections, A float body that is an assembly of compartments can be formed integrally, and the strength of the float body can be improved.

Another feature of the present invention is that, in the boat, the partition is formed by a partition made of a sheet material that partitions the interior space of the outer skin .

According to another feature of the present invention configured as described above, the boat can float the outer shell body small because the partition is formed by a partition wall made of a sheet material that partitions the inner space of the outer skin body. It becomes easy to store the skin body alone before manufacturing the body.

Another feature of the present invention is that, in the boat, the bulkhead is configured with an area larger than a cross-sectional area of the float body. In this case, the cross-sectional area is a cross-sectional area in a plane orthogonal to the longitudinal direction or center line of the float body.

According to another feature of the present invention configured as described above, the ship is configured such that the partition wall has a larger area than the cross-sectional area of the float body. Variations in volume expansion at the time can be absorbed, and a float body can be easily manufactured. In addition, since the bulkhead is configured to have a larger area than the cross-sectional area of the float body, a hard urethane material or the like is injected into one of two compartments adjacent to each other through the bulkhead and cured. After that, by injecting a hard urethane material or the like into the other compartment, the hard urethane foam in one compartment can enter the hard urethane foam in the other compartment. That is, according to the present invention, since the float body that is an aggregate of the compartments can be formed integrally, the strength of the float body can be improved.

In order to achieve the above object, the present invention is characterized by a rigid urethane foam ship bottom formed with a bottom surface immersed in the water surface and a floor surface on which a person is placed on the opposite side of the bottom surface, and a periphery of the ship bottom. A float body made of a rigid urethane foam disposed at least partially toward the bottom of the ship, and the float body is made of rigid urethane in an outer shell formed of a sheet material in a bag shape. The outer body is configured to contain at least two or more compartments, and the compartment is formed by a partition made of a sheet material that partitions the interior space of the outer body. The partition wall has a larger area than the cross-sectional area of the float body.

According to the feature of the present invention configured as described above, the ship is configured such that the bottom of the floor on which a person is placed is formed of a hard urethane foam, and the periphery of the bottom of the ship made of the hard urethane foam. At least a part of this is provided with a float body made of hard urethane foam. As a result, since the portion of the ship that can carry loads such as people and luggage is the bottom of the ship, the load can be stably placed on the water, and the bottom of the ship itself has buoyancy, so The amount of sinking into the sea can be suppressed, and it is possible to navigate smoothly even in shallow water. In this case, the rigid urethane foam means a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups, a catalyst (for example, an amine compound), a foaming agent (for example, , Water, fluorocarbon, etc.) and foam stabilizer (for example, silicone oil) etc. (hereinafter referred to as “hard urethane material”) to obtain a foaming reaction and a resinification reaction at the same time. Homogeneous plastic foam. The rigid urethane foam in the present invention has a compressive strength (10% compression) of at least 2.0 kgf / cm 2 or more.

In addition, according to the features of the present invention, since the bulkhead is configured with an area larger than the cross-sectional area of the float body, the amount of hard urethane material or the like injected into the compartment and the volume expansion during foaming are increased. Variations can be absorbed and a float body can be easily manufactured. In addition, since the bulkhead is configured to have a larger area than the cross-sectional area of the float body, a hard urethane material or the like is injected into one of two compartments adjacent to each other through the bulkhead and cured. After that, by injecting a hard urethane material or the like into the other compartment, the hard urethane foam in one compartment can enter the hard urethane foam in the other compartment. That is, according to the present invention, since the float body that is an aggregate of the compartments can be formed integrally, the strength of the float body can be improved.

Another feature of the present invention is that the float body is provided in a portion other than the rear side in the forward direction of the boat around the bottom of the boat.

According to another feature of the present invention configured as described above, since the float body is provided at a portion other than the rear side in the forward direction of the ship around the ship bottom, the ship has sufficient buoyancy. While securing, it can be protected by the float body from the front side in the traveling direction of the ship at the bottom of the ship, and the durability in the water area where obstacles are scattered on the water surface can be improved.

Another feature of the present invention is that the boat further includes a propulsion device that propels the boat, and the propulsion device is a jet water type that injects water.

According to another feature of the present invention configured as described above, since the boat is provided with a jet water type propulsion device, it is shallower than a case where a screw type propulsion device is used as the propulsion device of the boat. It is easy to navigate in waters where obstacles are scattered on the surface of the water and can be used as a life-saving boat.

In order to achieve the above object, the present invention is characterized in that at least one of a bottom made of rigid urethane foam formed with a bottom surface immersed in the water surface and a floor surface on which a person is placed on the opposite side of the bottom surface, And a float body made of a rigid urethane foam that is arranged in part and provided at least upward with respect to the bottom of the ship. In this case, in the above-mentioned boat, the float body can be configured by housing the hard urethane foam in the outer shell body in which the sheet material is formed in a bag shape. In these cases, in the boat, the outer skin body may be configured so that the inner space includes at least two sections. In these cases, in the boat, the section can be formed by a partition made of a sheet material that partitions the interior space of the outer skin body.

It is a top view which shows the outline of the external appearance structure of the boat which concerns on one Embodiment of this invention. It is a side view which shows the outline of the external appearance structure of the boat shown in FIG. It is a front view which shows the outline of the external appearance structure of the boat shown in FIG. It is a rear view which shows the outline of the external appearance structure of the boat shown in FIG. It is a partially expanded sectional view of the float body seen from the 5-5 line shown in FIG. It is a perspective view which shows the outline of the external appearance structure of the boat which concerns on the modification of this invention. It is a side view which shows the outline of the external appearance structure of the boat which concerns on the modification of this invention.

  Hereinafter, an embodiment of a boat according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an outline of an external configuration of a boat 100 according to the present invention. FIG. 2 is a side view showing an outline of an external configuration of the boat 100 shown in FIG. FIG. 3 is a front view showing an outline of the external configuration of the boat 100 shown in FIG. FIG. 4 is a rear view showing an outline of the external configuration of the boat 100 shown in FIG. This boat 100 is a boat with an outboard motor on which several people can be loaded.

(Configuration of boat 100)
The boat 100 includes a ship bottom 101. The ship bottom 101 constitutes a bottom portion having a bottom surface 101a soaking in water in the boat 100 and a part constituting a ship surface having a floor surface 101b on the boat 100 on which a load (not shown) such as a person or luggage is placed. It is composed of a hard urethane foam. More specifically, the ship bottom 101 has an infinite number of polyester resin or glass fiber yarns (not shown) arranged between two sheet materials made of polyvinyl chloride resin facing each other. It is composed of a board material in which a hard urethane material or the like (not shown) is injected and cured in a bag body in which two sheet materials are attracted to each other.

Here, the hard urethane foam is a hard urethane material, specifically, a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups as a catalyst (for example, Homogeneous plastic obtained by mixing foaming reaction and resinification reaction at the same time by mixing with amine compound, foaming agent (for example, water, fluorocarbon, etc.) and foam stabilizer (for example, silicone oil). It is a foam. The rigid urethane foam in the present invention has a compressive strength (10% compression) of at least 2.0 kgf / cm ² or more.

  In this embodiment, the ship's bottom 101 is composed of a starboard board member 102a constituting the starboard side half of the ship bottom 101 of the boat 100 and a starboard board member 102b constituting the portside half of the ship bottom 101 joined together by an adhesive. Thus, it is formed in a bullet shape extending from the stern of the boat 100 toward the bow side in a plan view. In this case, the starboard board material 102a and the portboard board material 102b are formed to warp upward after extending from the stern of the boat 100 toward the bow side, and these starboard board material 102a and the portboard board are formed. The material 102b is joined to each other so that a joint portion that is a central portion of the ship bottom 101 protrudes downward in a convex shape and has a V-shaped cross section.

  In addition, in the starboard board material 102a and the portboard board material 102b, a hard urethane material or the like is injected into each of the starboard board material 102a and the portboard board material 102b on the floor surface 101b on which a load (not shown) is placed. When the hard urethane material or the like is injected into each of the injection port (not shown) and the starboard side board material 102a and the port side board material 102b, the inside of the starboard side board material 102a and the port side board material 102b A discharge port (not shown) for extracting air is formed. Each of these inlets and outlets is closed by a lid 103 made of a sheet material made of polyvinyl chloride resin being bonded and fixed.

  A float body 104 and a saddle plate 112 are provided at the edge of the boat 100 at the bottom 101. Of these, the float body 104 is a portion that forms the heel side from the bow of the boat 100 and imparts buoyancy to the boat 100, and is formed of a U-shaped cylindrical body in plan view. The float body 104 is configured by filling a hard urethane foam 110 inside a bag-like outer skin 105.

  The outer skin 105 is a member that contains a hard urethane material or the like to form the float body 104 and covers and protects the hard urethane foam 110 that has been hardened. The outer skin 105 is formed by forming a sheet material made of polyvinyl chloride resin into a cylindrical shape. Configured. More specifically, as shown in FIG. 5, the outer skin body 105 includes a single float body 104 formed by connecting a plurality of small cylinder bodies 106 formed by forming a sheet material made of polyvinyl chloride resin into a cylindrical shape. Is configured. In this case, of the small cylinders 106, the two small cylinders 106, which are the stern of the boat 100, are narrowed in outer diameter toward the rear of the boat 100 and have the outer shell 105 on the rear end portion. A circular sheet material made of the same resin material is adhesively fixed and closed. In the present embodiment, the float body 104 is integrally configured by connecting 11 small cylindrical bodies 106.

  Further, each small cylinder 106 is formed with an inlet 107a and an outlet 107b on the upper side of the boat 100 at both ends of the cylinder. The injection port 107 a is a through hole for injecting a hard urethane material or the like into each small cylinder 106. The discharge port 107 b is a through hole for extracting air from each small cylinder 106 when a hard urethane material or the like is injected into each small cylinder 106. The inlet 107 a and the outlet 107 b are closed by adhesively fixing lids 107 c made of the same resin sheet material as the outer skin material 105.

  On the other hand, inside each small cylinder 106, the partition 108 is provided in the edge part by the side of the discharge port 107b in each small cylinder 106, respectively. These partition walls 108 are members for partitioning the inside of the float body 104 to form a plurality of sections 109, and are made of the same resin sheet material as the outer skin body 105. More specifically, each partition wall 108 is formed in a circular shape having an area (excluding the bonding allowance) larger than the cross-sectional area of each small cylinder body 106, and the edge portion is formed on the inner wall surface of each small cylinder body 106. Bonded and fixed. Thereby, the inside of the float body 104 is configured to be partitioned into a plurality of sections 109 in a state in which one part of the adjacent sections 109 enters a part of the other. In the present embodiment, the float body 104 is configured to be partitioned into 11 sections 109. In FIG. 1, the partition walls 108 are indicated by broken lines.

  In this case, the volume of one compartment 109 is preferably 100 liters to 200 liters, more preferably 130 liters to 170 liters, and further preferably 140 liters to 160 liters. In the present embodiment, the volume of one section 109 is set to 150 liters. In FIG. 1, one of the 11 sections 109 is indicated by hatching.

  The hard urethane foam 110 is filled in the float body 104 and gives buoyancy to the float body 104, and is composed of the same hard urethane foam filled in the ship bottom 101. The rigid urethane foam 110 is accommodated in each section 109 in the float body 104. Further, on the outer surface of the float body 104, a band-shaped bumper 111 made of a hard resin material is provided in a state of protruding from the outer surface in order to protect the outer surface of the float body 104.

  The saddle plate 112 is a part that constitutes the stern of the boat 100 together with the float body 104, and is formed of a metal plate-like body. The saddle plate 112 is fixed to the rear end portion on the floor surface 101b of the ship bottom 101 and the inner surface on the rear end side of the float body 104 by an adhesive. The anchor plate 112 is provided with a propulsion device 113. In this embodiment, the saddle plate 112 is attached to a front position by a predetermined width from the rear end portion of the ship bottom 101 (a width that allows a person to sit on or sit on the rear end portion of the ship bottom 101). ing.

  The propulsion device 113 is a mechanical device that generates a propulsive force for moving the boat 100 forward or backward. In this embodiment, the propulsion device 113 sucks water from the water under the ship bottom 101 through the water supply port 113a by using a rotational driving force generated by a motor (not shown) (for example, an engine or an electric motor), and the injection port It is a so-called water jet type outboard motor ejected from 113b. The propulsion device 113 is provided with a rudder bar 113c for changing the direction of the injection port 113b by changing the direction of the propulsion device 113 with respect to the saddle plate 112. An energy source (for example, a fuel tank or a battery) (not shown) for driving the propulsion device 113 is provided on the floor surface 101b of the bottom 101 of the boat 100.

(Manufacture of boat 100)
Next, the manufacturing process of the boat 100 will be described. An operator who manufactures the boat 100 first manufactures the ship bottom 101. Specifically, the operator prepares the starboard board body 102a and the portboard board body 102b that do not contain the hard urethane foam, respectively, and then uses the hard urethane injection device (not shown) to create the starboard board body 102a and A hard urethane material or the like is injected from each injection port of the port side board body 102b. Next, the operator attaches and fixes lids 103 to the inlets and outlets of the starboard board body 102a and the portboard board body 102b, and then closes the starboard board body 102a and the portboard board body 102b. The ship bottom 102 is manufactured by bonding and fixing.

  Next, the worker manufactures the float body 104. Specifically, the operator prepares the small cylinder body 106 constituting the float body 104. In this case, a partition wall 108 is preliminarily bonded and fixed to the small cylinder body 106, and one end of the small cylinder body 106 constituting the stern of the ship bottom 100 is closed into a bottomed cylindrical shape. Yes. In the present embodiment, the worker prepares 11 small cylinders 106. Next, the operator connects the small cylinders 106 to each other by adhesive fixation. Thereby, the semi-finished product of the float body 104 in a state where the hard urethane foam 110 is not accommodated is obtained.

  Next, the operator injects a hard urethane material or the like for each small cylinder 106 using a hard urethane injection device (not shown). In this case, the worker injects a hard urethane material or the like with a time difference between the small cylinders 106 adjacent to each other. That is, the operator injects the hard urethane material or the like into the other small cylinder 106 after at least semi-curing the hard urethane material or the like injected into the one small cylinder 106 between the adjacent small cylinders 106. .

  Thereby, since the partition wall 108 is formed larger than the cross-sectional area of the small cylindrical body 106 between the two adjacent sections 109, the hard urethane material or the like injected into the one section 109 is in the other section 109. It hardens while entering the inside. In this case, since the small cylinder body 106 is provided with the discharge port 107b adjacent to the partition wall 108 and the injection port 107a on the opposite side to the discharge port 107b, the air in the small cylinder body 106 is provided. In particular, it is possible to effectively exhaust air between the partition wall 108 bulging in a convex shape in the longitudinal direction and the inner wall surface of the small cylindrical body 106. As a result, the float body 104 is formed in a state in which one part of the adjacent sections 109 enters a part of the other. In the present embodiment, one central portion of the sections 109 adjacent to each other is formed so as to penetrate deepest into the other central portion.

  Next, the operator covers each inlet 107a and each outlet 107b by covering and fixing the lid 107c on each inlet 107a and each outlet 107b of each small cylinder 106. Next, after preparing the bumper 111, the operator adheres and fixes the bumper 111 along the longitudinal direction of the float body 1034 to the center portion of the outer surface of the float body 104. Thereby, the float body 104 is manufactured.

  Next, the operator assembles the ship bottom 101 and the float body 104. Specifically, the operator prepares the anchor plate 112 and then adheres and fixes the ship bottom 101, the float body 104, and the anchor plate 112 to each other. In this case, the operator arranges the float body 104 so as to surround the bow side and the shore side of the boat 100 at the outer edge of the ship bottom 101, and the side surface of the float body 104 (preferably, the float body 104) above the ship bottom 101. The float body 104 is adhered and fixed to the ship bottom 101 so that the height is 1/3 or more).

  Next, the operator prepares the propulsion device 113 and attaches it to the saddle plate 112. Thereby, the boat 100 is completed. The propulsion device 113 does not necessarily have to be attached during the manufacturing process of the boat 100, and can be attached locally when the boat 100 is used.

(Operation of boat 100)
Next, the operation of the boat 100 configured as described above will be described. A user who uses the boat 100 prepares the boat 100 and places it on the water. In this case, since the ship bottom 101 and the float body 104 are mainly composed of hard urethane foam, the user can remove the propulsion device 113 from the ship 100 if the boat 100 has a capacity of six or less. It can be carried by hand.

  Next, the user can get into the boat 100, specifically, on the floor surface 101b of the ship bottom 101, start the operation of the propulsion device 113, and navigate the boat 100. In this case, the ship 100 can stably place the load on the water because the part on which the load (not shown) such as a person or a baggage is directly placed is the ship bottom 101. Further, since the ship bottom 101 on which the load is directly placed is made of a hard urethane foam and the ship bottom 101 itself has buoyancy, the boat 100 can reduce the amount of sinking of the ship bottom 101 and the float body 104 below the water surface. Can be suppressed. Thereby, even if the ship bottom 100 is a water area where an obstacle floats on a shallow water surface, it can navigate smoothly.

  Further, the ship 100 has a ship bottom 101 made of a hard urethane foam, and a floor surface on which a load is placed has higher rigidity than a rubber boat using air, so that stability on the ship is improved. At the same time, devices that require particularly stability, such as wheelchairs, can be loaded. Moreover, since the ship bottom 101 and the float body 104 are each comprised with the rigid urethane foam 110, even if the ship bottom 101 and the float body 104 are damaged, the ship 100 does not lose buoyancy immediately. . Further, since the boat 100 is configured such that each section 109 in the float body 104 enters a part of the adjacent section 109, the entire float body 104 has high rigidity and can be navigated at high speed.

  In addition, since the propulsion device 113 is a jet water type, the boat 100 is shallower or in a water area where obstacles are scattered on the water surface than when a screw type propulsion device is used as the propulsion device 113 of the boat 100. Besides being easy to navigate, it can also be used as a life-saving boat. That is, the boat 100 can approach the water refugee while the propulsion device 113 is operated, and the water refugee can also grab the propulsion device 113 and go up on the ship. Further, in the case where damage such as scratches, dents, or chips occurs on the ship bottom 101 or the float body 104, the boat 100 can also be repaired by filling a putty made of resin in these damaged portions.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention. In addition, in each modification demonstrated below, the same code | symbol is attached | subjected to the component similar to the said embodiment, and description is abbreviate | omitted suitably.

  For example, in the above-described embodiment, the ship bottom 101 is configured by joining the starboard board body 102a and the portboard board body 102b so that the joint portion protrudes in a convex shape. As a result, the upper surface of the ship bottom 101, that is, the floor surface on the ship, has a V-shape in which the center is recessed. However, the ship bottom 101 is not necessarily limited to the above-described embodiment as long as the ship bottom 101 is composed of a rigid urethane foam in which a bottom surface 101a immersed in the water surface and a floor surface 101b on which a person is placed on the opposite side of the bottom surface 101a are respectively formed. is not. Therefore, for example, the ship bottom 101 can be configured by one board material containing one or more rigid urethane foams, and can be configured by joining two or more board materials to each other. it can. Further, the ship bottom 101 can also be configured with a flat bottom surface 101a and a floor surface 101b on the ship. In addition, by making the floor surface 101b of the boat 101 into a V shape in which the central portion is recessed, the water that has entered the ship can be easily collected in the central portion, so that the water that has entered can be easily pumped out. Moreover, the water which entered the ship can be easily discharged | emitted by providing a drain hole in the anchor board 112. FIG.

  In the above embodiment, the rigid urethane foam 119 constituting the float body 104 is covered with the outer skin 105. However, the float body 104 may be configured in a state where the outer urethane body 105 is omitted and the hard urethane foam 110 is exposed. Even when the outer skin 105 is used, the outer skin 105 can be made of a resin material other than the polyvinyl chloride resin material, a cloth material, or a metal sheet material. The ship bottom 101 can also be configured in a state where the resin urethane sheet material is omitted and the hard urethane foam is exposed, similarly to the float body 104.

  Further, in the above embodiment, the float body 104 is configured by partitioning the inside with eleven compartments 109. However. The float body 104 may be configured to be partitioned by 10 or less or 12 or more sections 109. Thus, by partitioning inside the float body 104 by the plurality of sections 109, it is possible to make the rigid urethane material and the like effective with high accuracy and efficiency without unevenness. Of course, the float body 104 can be configured by a single space without partitioning the interior. That is, the float body 104 can be configured by omitting the partition wall 108. In this case, the float body 104 may form a single float body 104 by connecting a plurality of small cylinders 106, or a single skin body 105 may form a single float body 104.

  In the above embodiment, the partition wall 108 provided in the float body 104 is formed in an area larger than the cross-sectional area of each small cylinder body 106. However, the partition wall 108 can be formed to have the same area (excluding the bonding allowance) as the cross sectional area of each small cylinder 106 or an area smaller than the cross sectional area of each small cylinder 106 (excluding the bonding allowance). In this case, by forming the partition wall 108 in the same area as the cross-sectional area of each small cylindrical body 106, the unevenness of the outer surface of the float body 104 can be suppressed and the smooth surface can be formed. Further, by forming the area of the partition wall 108 to be smaller than the cross-sectional area of each small cylinder 106, it is possible to form a recess recessed in a concave shape at a position corresponding to the partition wall 108 on the outer surface of the float body 104, Access to the ship via the float body 104 from the water, and access to the water via the float body 104 from the ship becomes easy.

  Further, in the above embodiment, the float body 104 is disposed so as to surround the bow side and the anchor side of the boat 100 at the outer edge portion of the ship bottom 101. That is, the float body 104 is provided in a portion other than the rear side in the forward direction of the boat 100 around the ship bottom 101. However, the float body 104 only needs to be arranged at least in part of the periphery of the ship bottom 101 to ensure the buoyancy of the boat 100. Therefore, for example, as shown in FIG. 6, the float body 104 may be provided so as to surround the entire circumference of the ship bottom 101. In this case, in the boat 100 shown in FIG. 6, the bottom 101 is formed as an integrally formed body in which one rigid urethane foam is covered with a resin sheet, and the outer edge of the bottom 101 is pentagonal in plan view. The assembled float body 104 is joined in two stages. In addition, the float body 104 is configured by a small cylinder body 106 having one side of a pentagon. In FIG. 6, the lids 103, 107a, and 107b are omitted. Further, the boat 100 may be formed in a shape other than a pentagonal shape in a plan view, for example, a polygon or a circle other than a pentagonal shape in a plan view.

  In the above embodiment, the boat 100 has the propulsion device 113 configured as a water jet type outboard motor. However, the propulsion device 113 is not necessarily limited to the above embodiment as long as the propulsion device 113 generates a propulsive force that can move the boat 100 forward or backward. Therefore, the boat 100 obtains a propulsive force by rotating a screw in water under the boat 100 using a rotational driving force generated by a prime mover (for example, an engine (including a fuel tank) or an electric motor (including a battery)). A screw-type outboard motor may be used as the propulsion device 113. Further, the propulsion device 113 may be one that generates a water flow or rotates a screw with a prime mover that is fixedly provided on the boat 100 as well as an outboard motor.

  Furthermore, the boat 100 can be configured by omitting the propulsion device 113 as shown in FIG. 6, for example. In this case, the boat 100 can also be configured so as to obtain a propulsive force by human power using an unshown oar or the like.

  In the case where a water jet type outboard motor is used as the propulsion device 113, for example, as shown in FIG. 7, the boat 100 reduces the height of the stern portion of the boat 100 to the water surface. An access unit 114 with a reduced height difference can be provided. According to this, the boat 100 uses the access unit 114 formed in the stern portion that is less likely to be injured by the propulsion device 113 and sinks by the propulsion device 113, and accesses to or from the water. Is safe and easy.

100 ... ships,
DESCRIPTION OF SYMBOLS 101 ... Ship bottom, 101a ... Bottom surface, 101b ... Floor surface, 102a ... Starboard side board body, 102b ... Port side board body, 103 ... Cover, 104 ... Float body, 105 ... Outer body, 106 ... Small cylinder body, 107a ... Note Inlet, 107b ... discharge port, 107c ... lid, 108 ... partition wall, 109 ... partition, 110 ... hard urethane foam, 111 ... bumper, 112 ... side plate, 113 ... propulsion device, 113a ... water inlet, 113b ... Spout, 113c ... rudder rod, 114 ... access part.

Claims (6)

A bottom made of rigid urethane foam in which a bottom surface immersed in the water surface and a floor surface on which a person is placed on the opposite side of the bottom surface are respectively formed;
A float body made of a rigid urethane foam disposed at least part of the periphery of the ship bottom and provided at least upward with respect to the ship bottom ;
The float body is
The hard urethane foam is accommodated in the outer skin formed of a sheet material in a bag shape,
The outer body is
The internal space is configured with at least two compartments,
The compartment is
Watercraft the rigid polyurethane foam which constitutes the one compartment between the compartment adjacent each other and wherein Rukoto not penetrate to the inside of the rigid polyurethane foam which constitutes the other compartment. In the boat according to claim 1,
The compartment is
A boat characterized by being formed by a partition wall made of a sheet material that partitions the interior space of the outer skin . In a boat according to claim 1 or claim 2,
The partition is
A ship having a larger area than a cross-sectional area of the float body . A bottom made of rigid urethane foam in which a bottom surface immersed in the water surface and a floor surface on which a person is placed on the opposite side of the bottom surface are respectively formed;
A float body made of a rigid urethane foam disposed at least part of the periphery of the ship bottom and provided at least upward with respect to the ship bottom;
The float body is
The hard urethane foam is accommodated in the outer skin formed of a sheet material in a bag shape,
The outer body is
The internal space is configured with at least two compartments,
The compartment is
It is formed by a partition made of a sheet material that partitions the interior space of the outer skin,
The partition is
A ship having a larger area than a cross-sectional area of the float body . In the boat according to any one of claims 1 to 4 ,
The float body is
Ship, characterized in that is provided, et al is in the forward direction behind the other side portion of the watercraft at the periphery of the ship bottom. A boat according to any one of claims 1 to 5, further comprising:
A propulsion device for propelling the boat,
The propulsion device is
Watercraft and wherein the jet water formula der Rukoto for injecting water.

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