JP5936531B2 - Floating jetty using a double hull and a double hull - Google Patents

Description

  The present invention relates to a double hull composed of two or more kayaks and a floating pier using the double hull.

  Japanese Patent No. 4611545 (Patent Document 1) is an example using a canoe, but shows a multihull ship in which two canoes are connected using a connecting structure. In this double hull, an attachment member is fixed to the tip and sides of the canoe by means such as screws, and a connecting structure is connected to the attachment member.

Japanese Patent No. 4611545

  In such a double hull, it is required to connect two or more kayaks easily and reliably and use the kayaks without any trouble. In addition, when not used as a multihull ship, it is required to use two or more kayaks alone.

  An object of the present invention is to provide a compound boat that can easily and reliably connect two or more kayaks and can be used alone without any trouble as a kayak.

  Another object of the present invention is to provide a compound boat that can be used as a rescue ship in the event of a disaster.

  Another object of the present invention is to provide a double hull which can be easily driven by power.

  Another object of the present invention is to provide a floating jetty that can be easily formed using the double hull of the present invention.

  This invention makes the object of improvement the multihull ship which connects two or more kayaks using a connection structure. The two or more kayaks used in the present invention have a plurality of hull through-holes penetrating the hull in the vertical direction, respectively, on the front side of the hull center in the longitudinal direction of the hull and on the rear side of the hull center It is a kayak provided separately from the hull rear region located. Such kayaks are commercially available. In the present invention, the connecting structure includes a frame structure, two or more front side fixing tools, and two or more rear side fixing tools. The frame structure includes a first connection frame for connecting two adjacent kayaks in the hull front region of the hull, and a second connection frame for connecting two adjacent kayaks in the hull rear region of the hull. At least. The two or more front-side fixtures are formed by using one or more hull through holes provided in the hull front area of the two kayaks adjacent to the first connecting frame. Attach to each. Further, the two or more rear-side fixtures may be configured such that two second kayaks are adjacent to each other by using one or more hull through holes provided in the rear part of the two kayaks adjacent to the second connecting frame. Attach to each.

  When the frame structure of the connection structure is fixed by using two or more front side fixing tools and two or more rear side fixing tools using the hull through hole provided in the kayak as in the present invention, A multihull can be constructed using two or more kayaks without any special processing. Therefore, a multihull ship can be provided at low cost, and the kayak itself has the advantage that it can be used without any trouble.

  The frame structure preferably includes a first connection frame, a second connection frame, and a third connection frame that connects the first connection frame and the second connection frame. When the third connecting frame is provided, the strength of the frame structure is increased, and the frame structure can be handled as an integrated body, thereby improving workability.

  Note that when the direction along the longitudinal direction of the hull is defined as the vertical direction and the direction in which two adjacent kayaks are lined up is defined as the horizontal direction, the third connecting frame is disposed at a predetermined interval in the horizontal direction. And a pair of vertical frames extending in the vertical direction and one or more horizontal frames connecting the pair of vertical frames. And it is preferable that a pair of edge part located in the back side of the hull of a pair of vertical frame connects with a 2nd connection frame via the detachable connection mechanism, respectively. If it does in this way, since a 2nd connection frame can be isolate | separated at the time of conveyance, a big conveyance space is not required.

  One or more flange members each having a through hole aligned with the one or more hull through holes are fixed to the pair of arm portions facing the hull of the first connection frame, respectively, and the hull of the second connection frame. One or more flange members having through holes that are aligned with one or more hull through holes are respectively fixed to the pair of arm portions opposed to each other. It is preferable that the connector used for the connection of is further fixed. Employing such a structure facilitates the work of fixing the first connecting frame and the second connecting frame using the hull through hole. In addition, even when connecting to other multiple hulls, it is not necessary to apply special processing to the kayak.

  A deck member can be disposed on the third connection frame. If it does in this way, a fishing tackle, luggage, etc. can be carried on a deck member. In addition, if an injured person or the like is placed on the deck member, the compound boat can be used as a rescue ship in the event of a disaster.

  The two or more front-side fixtures and the two or more rear-side fixtures penetrate through the elastic bushes fitted in the hull through-holes and through-holes formed in the elastic bushes and the flange members fixed to the arm portions, respectively. And a nut member screwed into the screw member, and a drop-off preventing member that prevents the nut member from falling off. The screw member should just be comprised so that it may not escape from an elastic bush. The elastic bush is fitted into the hull through-hole to restrict the movement of the screw member. If such a structure is employ | adopted, two or more front side fixing tools and two or more back side fixing tools can be easily fixed using a ship body through-hole. The elastic bushing integrally has an engaging portion that protrudes from the lower opening portion of the hull through hole when engaged with the hull through hole and engages with the bottom portion of the hull located outside the lower opening portion. It is preferable. When such an elastic bush is used, it is possible to prevent the elastic bush from entering the inside of the hull through-hole and to easily attach and detach.

  Further, the two or more front side fixing tools and the two or more rear side fixing tools are respectively fitted to the lower elastic bush fitted to the lower opening of the hull through hole and the upper opening of the hull through hole. An upper elastic bush, a flange that comes into contact with the outer end surface of the lower elastic bush, a flange attached to one end, and a screw portion at the other end, and a flange member fixed to the lower elastic bush, the upper elastic bush, and the arm portion The screw member that protrudes from the flange member through the formed through hole, a nut member that is screwed to the screw member, and a drop-off prevention member that prevents the nut member from dropping off can be configured. When such a structure is employed, it becomes possible to easily attach the frame structure using the hull through hole. In particular, since the lower elastic bush and the upper elastic bush are fitted in the hull through hole, the screw member can be positioned easily and reliably. Further, since the nut member is positioned on the upper elastic bush, it is possible to visually confirm that the nut member is not attached. Furthermore, since the drop prevention member is provided, there is no possibility that the nut member is easily loosened and dropped off.

  As the nut member, it is preferable to use a nut member that can be screwed manually. And it is preferable to comprise a fall prevention member from the clip pin fitted by the through-hole formed in the edge part of a screw member. By adopting such a structure, the frame structure can be attached to two adjacent kayaks without using a special tool.

  Preferably, one flange member is provided on each of the pair of arm portions of the first connection frame, and two flange members are provided on each of the pair of arm portions of the second connection frame. If it does in this way, when arrange | positioning an engine between two ship hulls, the attachment intensity | strength of the frame structure of the hull rear side can be raised.

  A power device attaching tool to which a power device for driving the multihull ship is attached can be fixed to the second connection frame. In this way, the multihull can be driven by power simply by attaching the power unit to the power unit fixture of the second connecting frame.

  A plurality of the multiple hulls of the present invention may be juxtaposed and two adjacent double hulls may be connected via a boat connecting frame connected to a frame structure provided in the double hull. If the deck member is arranged on the frame structure of the double hull and the deck member is arranged on the frame portion located between two adjacent double hulls of the boat connecting frame, the double hull of the present invention is used. A floating pier can be constructed.

  In addition, if a boat connection frame is connected using the connector included in the frame structure provided in the multihull ship, a floating jetty can be configured without applying any special processing to the kayak to be used.

  It is preferable that the boat connecting frame is integrally provided with a handrail frame.

1 is a perspective view of a double hull according to an embodiment of the present invention. It is a top view which shows the state which removed the power unit in the compound ship shown in FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is a top view which shows the state which removed the 2nd connection frame in the frame structure used for the compound boat shown in FIG. It is a rear view which shows the state which removed the 2nd connection frame in the frame structure used for the compound ship shown in FIG. It is a right view which shows the state which removed the 2nd connection frame in the frame structure used for the compound ship shown in FIG. It is a top view of the 2nd connection frame used for the compound boat shown in FIG. It is a rear view of the 2nd connection frame used for the compound boat shown in FIG. It is a right view of the 2nd connection frame used for the compound boat shown in FIG. It is a figure for demonstrating in detail the structure of the back side fixing tool 23 shown in FIG. It is a perspective view shown in the state which decomposed | disassembled the rear side fixing tool and flange member which are used for the compound boat shown in FIG. FIG. 2 is a perspective view of a floating jetty according to an embodiment of the present invention using the double hull shown in FIG. 1. FIG. 13 is a plan view showing a state in which a deck member is removed from two boats constituting the floating pier shown in FIG. 12. It is a rear view which shows the state which removed the deck member from the two ship hulls which comprise the floating jetty shown in FIG. It is a perspective view of the frame assembly used for the floating pier shown in FIG. It is a figure for demonstrating the connection method of the connection tools of the floating pier shown in FIG. It is a figure which shows the structure in the case of using one elastic bush in the back side fixing tool shown in FIG.

  Hereinafter, embodiments of a double hull of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a double hull according to an embodiment of the present invention, FIG. 2 is a plan view of the double hull with a power unit to be described later removed, and FIGS. 3 and 4 are III in FIG. -III sectional view and IV-IV sectional view. As shown in FIG. 1, the double hull 1 of the present embodiment includes two kayaks 3A and 3B, a connecting structure 5 that connects the two kayaks 3A and 3B, and a deck member attached to the connecting structure 5. 7A-7C and an outboard motor (power unit) 9 are provided. The two kayaks 3A and 3B are both commercially available kayaks having the same structure. As shown in FIGS. 3 and 4, the kayaks 3A and 3B are formed of a synthetic resin material and have a hollow portion A inside. And as shown in FIG. 2, each kayak 3A, 3B has two front hull through-holes 11A, 11B in the hull front area located in front of the hull center in the longitudinal direction of the hull. Further, the kayaks 3A and 3B have two rear hull through holes 13A and 13B in the hull rear region located on the rear side of the hull center, and have central hull through holes 15A and 15B near the hull center, respectively. . These hull through-holes (11A and the like) are called scapper holes, and the front hull through-holes 11A and 11B are formed inside a cylindrical portion 17 (FIG. 4) that penetrates the hull in the vertical direction. The rear hull through-holes 13A and 13B are formed inside a cylindrical portion 19 (FIG. 3), and the central hull through-holes 15A and 15B are formed inside a cylindrical portion (not shown). The cylindrical parts 17 and 19 have a function of maintaining the strength of the hull. The hull through-holes (11A, etc.) also serve as drain holes for draining water that has entered the top surfaces of the kayaks 3A, 3B. Since the kayaks 3A and 3B have buoyancy due to the internal cavity A, there is no problem in safety even if the hull through hole is completely closed.

  The connection structure 5 includes a frame structure 20, two front side fixing tools 21, and four rear side fixing tools 23. The frame structure 20 includes a first connection frame 25, a second connection frame 27, and a third connection frame 29 that connects the first and second connection frames 25 and 27. The first to third connection frames 25, 27, and 29 are formed by processing metal pipes. As shown in detail in FIGS. 5 to 7, the first connection frame 25 integrally includes a frame main body portion 25 a and a pair of arm portions 25 b and 25 c located on both sides of the frame main body portion 25 a. The two kayaks 3A and 3B are disposed over the front region of the hull. 5 to 7 are a plan view, a rear view (a view of the frame structure 20 viewed from below in FIG. 5), and a right side view (FIG. 5) of the frame structure 20 with the second connecting frame 27 removed. 2 is a diagram of the frame structure 20 as viewed from the left side). The first connection frame 25 is formed of an aluminum pipe. One arm portion 25b of the pair of arm portions 25b and 25c faces the hull of the kayak 3A. The other arm portion 25c of the pair of arm portions 25b and 25c faces the hull of the kayak 3B. At the ends of the pair of arm portions 25b and 25c, connecting tools 31A and 31B used for connection with other compound boats are attached, respectively.

  As shown in FIG. 6, the couplers 31A and 31B have a ring shape having a hole portion 31c therein, and are attached to respective end portions of the pair of arm portions 25b and 25c so as to be removable using screws. ing. Further, flange members 33A and 33B are fixed to the pair of arm portions 25b and 25c, respectively. Each of the flange members 33A and 33B has a flange main body 33c and an extending portion 33d, and is formed by bending an aluminum plate. A through hole 33e is formed at the end of the extending portion 33d. The through hole 33e of the flange member 33A is fitted to the end of one arm portion 25b, and the periphery of the through hole 33e of the flange member 33A is welded to the arm portion 25b. The through hole 33e of the flange member 33B is fitted to the end of the other arm portion 25c, and the periphery of the through hole 33e of the flange member 33B is welded to the end of the arm portion 25c. The flange main body 33c of the flange member 33A is provided with a through hole 33f aligned with the front hull through hole 11B of the kayak 3A, and the flange main body 33c of the flange member 33B is a through hole aligned with the front hull through hole 11A of the kayak 3B. 33f. As shown in FIG. 2, the flange member 33A is provided with a front-side fixture 21 disposed in the front hull through hole 11B of the kayak 3A, and the flange member 33B has a front hull through hole of the kayak 3B. A front-side fixture 21 disposed in 11A is attached. The first connection frame 25 is fixed to the kayaks 3 </ b> A and 3 </ b> B via these front side fixing tools 21. A mode in which the front side fixture 21 is attached to the flange members 33A and 33B will be described later.

  As shown in detail in FIGS. 8 to 10, the second connection frame 27 integrally includes a frame main body portion 27 a and a pair of arm portions 27 b and 27 c located on both sides of the frame main body portion 27 a. It arrange | positions over the hull rear area | region of two kayaks 3A and 3B. 8 to 10 are a plan view, a rear view, and a right side view of the second connection frame 27, respectively. The second connection frame 27 is formed of an aluminum pipe. In the center of the frame main body 27a, a power device attachment 37 is fixed. A power unit 9 (FIG. 1) for driving the multihull ship 1 is attached to the power unit attachment 37 as required. As the power unit 9 composed of an outboard motor, for example, a screw engine of less than 2 horsepower can be used. At the ends of the pair of arm portions 27b, 27c, there is a hole 39c in the interior used for connection to another multihull ship, like the pair of arm portions 25b, 25c of the first connection frame 25 described above. Ring-shaped couplers 39A and 39B are removably attached. One arm portion 27b of the pair of arm portions 27b and 27c faces the hull of the kayak 3A. The other arm portion 27c of the pair of arm portions 27b and 27c faces the hull of the kayak 3B. Two flange members 41A are fixed to one arm portion 27b. Two flange members 41B are fixed to the other arm portion 27c. Each of the flange members 41A and 41B has a flange main body 41c and an extending portion 41d, and is formed by processing an aluminum plate. The end portion of the extending portion 41d fixed to one arm portion 27b is fixed to the arm portion 27b by welding. The end portion of the extending portion 41d fixed to the other arm portion 27c is also fixed to the arm portion 27c by welding. The flange main body 41c of the flange member 41A is provided with a through hole 41f aligned with the rear hull through holes 13A and 13B of the kayak 3A. A matching through hole 41f is provided. As shown in FIG. 2, the two rear side fixtures 23 disposed in the rear hull through holes 13A and 13B of the kayak 3A are attached to the two flange members 41A, and the kayaks are attached to the two flange members 41B. A rear-side fixing tool 23 disposed in the 3B rear hull through-holes 13A and 13B is attached. A mode in which the rear side fixture 23 is attached to the flange members 41A and 41B will be described later.

  As shown in detail in FIG. 5 to FIG. 7, the third connection frame 29 that connects the first and second connection frames 25 and 27 is five that connects the pair of vertical frames 43 and the pair of vertical frames 43. Horizontal frames 45A to 45E. The pair of vertical frames 43 and horizontal frames 45A, 45D of the third connection frame 29 are formed of aluminum pipes, and the horizontal frames 45B, 45C, 45E are formed of an aluminum elongated plate. The pair of vertical frames 43 are defined as horizontal directions when the direction along the longitudinal direction of the hull of the kayaks 3A and 3B is defined as the vertical direction, and the direction in which the two adjacent kayaks 3A and 3B are aligned is defined as the horizontal direction. It arrange | positions at predetermined intervals and is arrange | positioned so that it may extend in the vertical direction. The first connecting frame 25 is fixed to the pair of vertical frames 43 of the third connecting frame 29 by welding so that the frame main body portion 25a is aligned with the horizontal frames 45B and 45C between the horizontal frame 45B and the horizontal frame 45C. Has been. The second connection frame 27 is connected to a pair of end portions 43a located on the rear side of the hull of the pair of vertical frames 43 via a third connection frame 29 and a detachable connection mechanism. Specifically, the screws fixed to the pair of end portions 43a of the third connection frame 29 are arranged in the through holes 27d (FIGS. 8 and 9) penetrating the second connection frame 27 in the radial direction. As shown in FIG. 2, the threaded portion 46 protruding from the tubular portion 28 is screwed with a nut member 47 through the tubular portion 28. As shown in FIG. 5, a location where the pair of vertical frames 43 and the two horizontal frames 45A and 45D are connected, a location where the pair of vertical frames 43 and the first connection frame 25 are connected, and a pair of Deck member attachment portions 49 are fixed to the portions where the vertical frame 43 and the second connection frame 27 are connected (near the end portion 43a) by welding. A through hole 49 a is formed in the center of the deck member mounting portion 49. As shown in FIG. 2, the deck members 7 </ b> A to 7 </ b> C placed on the third connection frame 29 are fixed to the third connection frame 29 by screw members 51 that pass through the through holes 49 a. As the deck members 7A to 7C, a veneer plate or a plastic plate can be used. Fishing gear and luggage can be placed on the deck members 7A to 7C. Further, if an injured person or the like is placed on the deck members 7A to 7C, the compound ship 1 can be used as a rescue ship in the event of a disaster.

  Next, a mode in which the rear fixture 23 is attached to the flange members 41A and 41B fixed to the second connection frame 27 will be described. Since the flange members 41A and 41B are both attached to the rear-side fixture 23 in the same manner, the flange member 41A is disposed in the rear hull through-hole 13B of the kayak 3A with reference to FIGS. The aspect attached to the side fixing tool 23 is demonstrated. 11 is a diagram for explaining in detail the configuration of the rear-side fixture 23 shown in FIG. 3, and FIG. 12 is a perspective view showing the rear-side fixture 23 and the flange member 41A in an exploded state. . As shown in FIGS. 11 and 12, the rear fixture 23 includes a lower elastic bush 53, an upper elastic bush 55, a screw member 57, a nut member 59, and a drop-off preventing member 61. Each of the lower elastic bush 53 and the upper elastic bush 55 is made of flexible vinyl chloride, and is connected to the prefix cone-shaped main body portions 53a and 55a and the end portions of the main body portions 53a and 55a, respectively. It integrally has disk-like engaging portions 53b and 55b whose diameter is larger than that of the main body portions 53a and 55a. Further, the lower elastic bush 53 and the upper elastic bush 55 are formed with through holes 53c and 55c penetrating in the axial direction. The lower elastic bushing 53 has a main body 53a fitted in the lower opening 13d of the rear hull through hole 13B. In this state, the engaging portion 53b protrudes from the lower opening 13d and engages with the bottom surface portion 3c of the hull located outside the lower opening 13d. The upper elastic bush 55 has a main body portion 55a fitted in the rear hull through hole 13B. In this state, the engaging portion 55b protrudes from the upper opening 13e of the rear hull through hole 13B and engages with the upper surface portion 3d of the hull located outside the upper opening 13e.

  The screw member 57 has a disk-shaped flange 57a and a shaft portion 57b. A screw part 57c is formed at the tip of the shaft part 57b, and a through hole 57d penetrating in the radial direction is formed further on the tip side of the screw part 57c. In the screw member 57, the flange 57 a is in contact with the engaging portion (outer end portion) 53 b of the lower elastic bush 53. The shaft portion 57 b passes through the through hole 53 c of the lower elastic bush 53, the through hole 55 c of the upper elastic bush 55, and the through hole 41 f of the flange member 41 A fixed to the second connection frame 27. A screw portion 57 c protruding from the flange member 41 </ b> A is screwed into the nut member 59. The nut member 59 is configured so that it can be screwed manually. A drop-off prevention member 61 made of a clip pin is fitted into the through hole 57d of the shaft portion 57b.

  In order to attach the flange member 41A to the rear fixture 23, the following procedure is used. First, the screw member 57 is passed through the through hole 53 c of the lower elastic bush 53. Next, the shaft portion 57b of the screw member 57 is inserted into the cylindrical portion 19 from the lower opening 13d side, thereby fitting the main body portion 53a of the lower elastic bush 53 into the rear hull through-hole 13B. Next, the through hole 55 c of the upper elastic bush 55 is passed through the screw member 57. And the main-body part 55a of the upper side elastic bush 55 is fitted by the back hull through-hole 13B. Next, the through hole 41 f of the flange member 41 </ b> A fixed to the second connection frame 27 is passed through the screw member 57. Next, the nut member 59 is screwed into the screw portion 57c, and the drop-off preventing member 61 is fitted into the through hole 57d of the shaft portion 57b to complete the attachment. In this way, the flange member 41A can be easily attached to the rear-side fixture 23 manually.

  Next, a mode in which the front side fixing tool 21 is attached to the flange members 33A and 33B fixed to the first connection frame 25 will be described. As shown in FIG. 4, the front side fixing tool 21 includes a lower elastic bush 63, an upper elastic bush 65, a screw member 67, a nut member 69, and a drop-off prevention member 71, similarly to the rear side fixing tool 23. ing. The flange member 33 </ b> A is attached to the front-side fixture 21 in the same procedure as that for attaching the flange member 41 </ b> A to the rear-side fixture 23.

  According to the double hull 1 of the present embodiment, the front side fixing tool 21 and the rear side are utilized using the front hull through holes 11A and 11B and the rear hull through holes 13A and 13B provided in the kayaks 3A and 3B. Since the frame structure 20 of the connection structure 5 is fixed to the kayaks 3A and 3B by the fixing tool 23, the two kayaks 3A and 3B are connected to each other without performing any special processing on the kayaks 3A and 3B. The ship 1 can be configured.

  FIG. 13 is a perspective view of a floating pier using the double hull 1 of the above embodiment, and FIGS. 14 and 15 are two double hulls 1 (FIG. 14) constituting the floating pier shown in FIG. FIG. 2 is a plan view and a rear view showing a state in which the deck member is removed from the reference numeral 1A and 1B for convenience. As shown in each figure, the floating jetty of the present embodiment is configured by arranging a plurality of multiple hulls 1 in parallel. As shown in FIGS. 14 and 15, two adjacent double hulls 1 </ b> A and 1 </ b> B are connected via a frame assembly 81. As shown in the perspective view of FIG. 16, the frame assembly 81 integrally includes a boat connecting frame 81a and a handrail frame 81b, and is formed by combining aluminum pipes. The boat connecting frame 81a has two horizontal poles 82A and 82B and two vertical poles 83A and 83B that connect the two horizontal poles 82A and 82B. The horizontal pole 82A is arranged across the front area of the kayak 3B of one double hull 1A and the front area of the kayak 3A of the other double hull 1B. ing. Ring-shaped couplers 84A and 84B each having a hole 84e inside are attached to the end of the lateral pole 82A. The connecting tool 84A of the lateral pole 82A is connected to a connecting tool 31B attached to the first connecting frame 25 of the multihull ship 1A. Further, the connecting tool 84B of the lateral pole 82A is connected to a connecting tool 31A attached to the first connecting frame 25 of the multihull ship 1B. The connection mode between the two will be described later. The horizontal pole 82B is disposed across the rear hull region of the kayak 3B of one double hull 1A of two adjacent double hulls 1A and 1B and the rear hull region of the kayak 3A of the other double hull 1B. ing. Ring-shaped couplers 85A and 85B each having a hole 85e are also attached to the end of the lateral pole 82B. The connecting tool 85A of the lateral pole 82B is connected to a connecting tool 39B attached to the second connecting frame 27 of the multihull ship 1A. Further, the connecting tool 85B of the lateral pole 82B is connected to a connecting tool 39A attached to the second connecting frame 27 of the multihull ship 1B.

  Below, the connection method of connection tools (84A, 31B etc.) is demonstrated. Since all the connecting methods of the connecting tools are the same, the mode of the connecting tool 84A and the connecting tool 31B shown in FIG. 17 will be described as an example. The connecting tool 84A and the connecting tool 31B are arranged at an interval so that the hole 84e of the connecting tool 84A and the hole 31c of the connecting tool 31B are aligned. A cylindrical collar 86 is loosely inserted between the hole 84e and the hole 31c. A shaft portion 87 a of a screw member 87 is loosely inserted into the collar 86. A washer 88A is sandwiched between the head 87b of the screw member 87 and the connector 84A. A washer 88B is fitted into a portion of the screw member 87 protruding from the connector 31B, and a nut 89 is screwed into the screw portion 87c of the screw member 87. Further, a drop-off preventing member 90 made of a clip pin is fitted in the through hole 87d on the tip side from the screw portion 87c. In the present embodiment, the connecting tool 84A and the connecting tool 31B are arranged at an interval, and the cylindrical collar 86 is loosened across the hole 84e of the connecting tool 84A and the hole 31c of the connecting tool 31B. Since it is inserted, even if the floating pier is shaken by a wave, the transmission of force can be suppressed at the connecting portion between the connecting tool 84A and the connecting tool 31B, and the floating pier can be prevented from tilting greatly.

  The handrail frame 81b includes four vertical poles 91A to 91D extending perpendicularly to the boat connecting frame 81a, and two horizontal poles 92A and 92B that connect the vertical poles 91A to 91D and are lined up and down. doing. Ring-shaped couplers 93A and 93B each having a hole 93e inside are attached to both ends of the horizontal pole 92A located above. As shown in FIG. 13, a rope 94 is stretched between the connection tool 93A and the connection tool 93B of the adjacent handrail frame 81b.

  A deck member 96 is disposed on a frame portion located between two adjacent boats 1A and 1B of the boat connecting frame 81a. The deck member 96 is a standard size veneer plate. As a result, the deck member 96 and the deck members 7A to 7C disposed on the multihull ships 1A and 1B are alternately arranged.

  According to the floating jetty of the present embodiment, the boat connecting frame 81a is connected using the connecting tool (31A etc.) included in the frame structure 20 provided on the compound ship 1A, 1B. , 3B can be configured without special processing.

  FIG. 18 shows a configuration when one elastic bush 155 is used in the rear side fixture 23. 18, the same parts as those shown in FIGS. 11 and 12 are denoted by the same reference numerals as those shown in FIGS. 11 and 12, and the description thereof is omitted. In this configuration, one elastic bush 155 is formed of flexible vinyl chloride, and is provided at the front conical main body portion 155a and at the end of the main body portion 155a and below the rear hull through hole 13B. The engaging portion 155d protruding from the opening portion 13d and the engaging portion 155b protruding from the upper opening portion 13e are integrally provided. The engaging portion 155d engages with the bottom surface portion 3c of the hull after the elastic bush 155 is inserted from the upper opening 13e and protrudes from the lower opening 13d. Other structures are the same as those shown in FIGS.

  According to the present invention, the frame structure of the connection structure is fixed by using two or more front side fixing tools and two or more rear side fixing tools using the hull through hole provided in the kayak. Two or more kayaks can be connected to form a multihull without special processing. Therefore, a double hull can be provided at a low cost, and the kayak itself can be used without any trouble.

DESCRIPTION OF SYMBOLS 1 Combined ship 3A, 3B kayak 5 Connection structure 7A-7C Deck member 9 Power unit 11A, 11B Front hull through-hole 13A, 13B Rear hull through-hole 20 Frame structure 21 Front side fixing tool 23 Back side fixing tool 25 1st Connection frame 25b, 25c A pair of arm portions 27 A second connection frame 27b, 27c A pair of arm portions 29 A third connection frame 31, 39 A connection tool 33A, 33B Flange member 37 Power device attachment tool 41A, 41B Flange member 43 Vertical Frame 45A to 45E Horizontal frame 53 Lower elastic bush 55 Upper elastic bush 57 Screw member 57a Flange 57c Screw portion 59 Nut member 61 Drop prevention member 81a Boat connection frame 81b Handrail frame 84A, 84B, 85A, 85B, 93A, 93B connection Tool 96 Tsu key member

Claims (14)

It is a multihull ship that connects two or more kayaks using a connecting structure,
The two or more kayaks each have a plurality of hull through-holes penetrating the hull in the vertical direction, located on the front side of the hull center in the longitudinal direction of the hull and on the rear side of the hull center. A kayak that is divided into the hull rear area to be
The connecting structure is
A first connection frame for connecting two adjacent kayaks in the hull front region of the hull, and a second connection frame for connecting two adjacent kayaks in the hull rear region of the hull A frame structure comprising at least
The first connecting frame is attached to the hull front region of the two adjacent kayaks by using one or more hull through holes provided in the hull front region of the two adjacent kayaks, respectively. With the above front side fixture,
The second connecting frame is attached to the rear region of the two adjacent kayaks by using one or more through-holes provided in the rear region of the two adjacent kayaks. A multihull consisting of the above rear side fixtures.   2. The multihull ship according to claim 1, wherein the frame structure includes a third connection frame that connects the first connection frame and the second connection frame. 3. When the direction along the longitudinal direction of the hull is defined as the vertical direction and the direction in which the two adjacent kayaks are lined up is defined as the horizontal direction, the third connecting frame has a predetermined interval in the horizontal direction. A pair of vertical frames arranged and extending in the vertical direction, and one or more horizontal frames connecting the pair of vertical frames,
The multihull ship according to claim 2, wherein a pair of ends of the pair of vertical frames positioned on the rear side of the hull are connected to the second connection frame via a detachable connection mechanism. One or more flange members each having a through hole aligned with the one or more hull through holes are fixed to the pair of arm portions facing the hull of the first connecting frame,
One or more flange members each having a through hole that is aligned with the one or more hull through holes are fixed to a pair of arm portions of the second connecting frame facing the hull,
4. The multihull ship according to claim 3, wherein a connection tool used for connection to each other multihull ship is further fixed to each of the pair of arm portions.   The multihull ship according to claim 2, wherein a deck member is disposed on the third connection frame.   The two or more front side fixing tools and the two or more rear side fixing tools are respectively formed on an elastic bush fitted into the hull through-hole, and the flange member fixed to the elastic bush and the arm portion. The screw member which a thread part protrudes from the said flange member through the said through-hole, The nut member screwed together by the said screw member, The drop-off prevention member which prevents drop-off | omission of the said nut member is comprised to Claim 4 Listed hull   When the elastic bush is fitted into the hull through hole, the elastic bush protrudes from the lower opening of the hull through hole and engages with the bottom portion of the hull located outside the lower opening. The multihull ship according to claim 6, wherein   The two or more front-side fixtures and the two or more rear-side fixtures are fitted into a lower elastic bush fitted to the lower opening of the hull through hole and an upper opening of the hull through hole, respectively. An upper elastic bush to be joined, a flange abutting on an outer end surface of the lower elastic bush, the flange is attached to one end, and a screw portion at the other end, and the lower elastic bush, the upper elastic bush, and the arm A screw member that protrudes from the flange member through a through-hole formed in the flange member fixed to a portion, a nut member that is screwed to the screw member, and a nut member that is removed The multihull ship according to claim 4, comprising a drop-off prevention member to prevent. The nut member is configured so that it can be screwed manually.
9. The multihull ship according to claim 6, wherein the drop-off prevention member includes a clip pin that is fitted into a through-hole formed in an end portion of the screw member. Each of the pair of arm portions of the first connection frame is provided with one flange member,
The multihull ship according to claim 4, wherein each of the pair of arm portions of the second connection frame is provided with two flange members.   2. The multihull ship according to claim 1, wherein a power unit attachment to which a power unit for driving the multihull ship is mounted is fixed to the second connection frame. A plurality of the multiple hulls according to claim 1 are juxtaposed, and two adjacent hulls are connected via a boat connecting frame connected to the frame structure provided in the double hull. Concatenated,
A deck member is arranged in the frame structure of the double hull,
A floating jetty in which a deck member is disposed on a frame portion located between two adjacent hulls of the boat connecting frame. 5. A boat in which a plurality of the multiple hulls according to claim 4 are juxtaposed, and two adjacent hulls are connected to a connector included in the frame structure provided in the double hull. Connected through a connecting frame,
A deck member is disposed between the pair of vertical frames of the frame structure of the compound ship,
A floating jetty in which a deck member is disposed on a frame portion located between two adjacent hulls of the boat connecting frame.   The floating pier according to claim 12 or 13, wherein the boat connecting frame is integrally provided with a handrail frame.

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