JP2018103695A - Two split type surfboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-divided surfboard which is easy to use when surfing. SOLUTION: The front surfboard main body 100 and the rear surfboard main body 200 are provided, and at least two coupling pipe insertion holes are formed at predetermined positions in the board width direction at a predetermined interval on their contact surfaces. In addition, either the front surfboard body and the rear surfboard body have either a positioning coupling fixing convex part or a positioning coupling fixing recess near each coupling pipe insertion hole, and the deck surface and bottom surface of each surfboard body have surfboards. The coupling fixture is provided so as to straddle the coupling lines that appear on the deck surface and the bottom surface when the front surfboard body and the rear surfboard body are joined, and the fixing screw 500 screwed with the surfboard coupling fixture 300 is the same. The tightness can be confirmed while using the two-piece surfboard. [Selection diagram] FIG. 7

Description

  The present invention, when surfing, can be taken while being divided into two parts to the place to surf, combine this when arriving at the place, enjoy the surf in the form of the original surfboard, It relates to a two-part surfboard that can be taken in two parts again after surfing.

  In recent years, surfing has been widely practiced using the blessings of nature such as ocean waves to help relieve stress and improve health. Surfing is one of the most important sports that protects the natural environment. It is very useful for children and young people from the viewpoint of protecting the earth's environment. It is very excellent from the viewpoint of prevention.

  Furthermore, with the spread of longboards and the like in recent years, even relatively elderly people can enjoy surfing, and the wonders of surfing have become widely known in terms of anti-aging and enjoyment of life. ing. In addition to this, as surfing has been decided as a sporting event for the 2020 Tokyo Olympics, more attention is being paid to surfing.

  However, the surfboard itself is, for example, a short board with a total length of about 170 to 180 cm, a fan board with a total length of about 200 to 210 cm, and a long board with a total length of about 260 to 280 cm, so those who live near the surf point If you can, you can carry it on a bicycle etc., but people who come from other remote residences are difficult to carry on the train and use wagons, one box cars, relatively large sedan type cars I have to carry it.

  On the other hand, there is a method of using a facility for storing a long board or the like near the surf point, but the storage cost to be paid monthly increases.

  For the reasons described above, the surfing board or the stringer's length, which is made by removing the air during transportation and transporting it with a small size, and enjoying the surfing by putting the air into a board shape (see Patent Document 1). A surfboard is considered that is divided into two in a direction and is transported by shortening the entire length and stacking two sheets (see Patent Document 2 and Patent Document 3).

JP-A-10-7078 JP 2001-206286 A JP-A-11-59574

  The wave riding board described in Patent Document 1 is a plate-like body that is inflated by putting air into it in accordance with the principle of a so-called float bag, so that it is possible to ride a wave as a stomach as described in the same document However, it is difficult to stand steadily on the board when actually surfing, and surfing cannot be enjoyed.

  In addition, the two-part surfboard described in Patent Document 2 is not only complex and expensive, but it is very troublesome to bring it to a place where you actually surf and assemble it as a surfboard. When it is used up, it is necessary to carry out a complicated work to divide it into two parts again.

  In addition, the two-part surfboard described in Patent Document 3 is simpler in structure and easier to assemble and disassemble than the two-part surfboard described in Patent Document 2, but still has a structure that takes some time to assemble and disassemble. It has become. However, if the number of parts of the two-part surfboard described in Patent Document 3 is reduced and the structure is further simplified, the coupling portion is loosened when riding a large wave such as a typhoon swell or immediately after passing through a low pressure. It is necessary to surf while worrying about this, and there is concern that you will not be able to fully enjoy surfing because you missed the wonderful waves coming off the coast when waiting for the waves.

  The purpose of the present invention is to divide the surfing place into two places when surfing, and to enjoy surfing with peace of mind while maintaining a tightly coupled state when actually surfing It is possible to provide a two-part surfboard that can be divided into two parts when the surfing is finished.

In order to achieve the above object, a two-part surfboard according to claim 1 of the present invention is provided.
In the extension direction of the stringer, in the two-part surfboard that can be divided into two when transporting and can be combined when surfing,
A front surfboard body having a front stringer and a rear surfboard body having a rear stringer;
At the contact surfaces of the front surfboard main body and the rear surfboard main body, at least two connecting pipe insertion holes are formed at predetermined intervals in the board width direction, and in the vicinity of the respective connecting pipe insertion holes. Each has either a positioning coupling fixing convex part or a positioning coupling fixing concave part of the front surfboard body and the rear surfboard body,
A surfboard coupling fixture is provided on the deck surface and the bottom surface of each surfboard body so as to straddle the coupling lines that appear on each of the deck surface and the bottom surface when the front surfboard body and the rear surfboard body are coupled,
The surfboard coupling fixture has an elongated plate shape, has screw holes in the vicinity of both ends, and a female screw portion that fixes the front surfboard body and the rear surfboard body in a coupled state through screws through the screw holes. It is formed on the deck part and bottom part of the front surfboard body and the rear surfboard body,
A coupling pipe is inserted into a coupling pipe insertion hole provided in each of the front surfboard main body and the rear surfboard main body, and a concave portion or a convex portion provided in the front surfboard main body and a convex portion of the rear surfboard main body provided in a position corresponding thereto. The front surfboard main body and the rear surfboard main body are coupled by fitting a recess, and a screw is passed through the screwing hole to the surfboard coupling fixture on the deck surface and the bottom surface of the front surfboard main body and the rear surfboard main body, respectively. With the female screw part tightened, the surfboard body and the rear surfboard body can be integrated,
The front surfboard and the rear surfboard are configured by stacking bamboo plywood on the top and bottom surfaces of the foam material partitioned by the stringer made of wood, and further covering the entire surface with glass fiber and epoxy resin, Carbon pipe is used as the coupling pipe,
The fixing screw tightened with the surfboard coupling fixture can be tightened with a coin, and the tightened state can be confirmed during use of the two-part surfboard.

Further, the two-part surfboard according to claim 2 of the present invention is the two-part surfboard according to claim 1,
The two-part surfboard can be used for a paddle board.

  According to the present invention, when surfing, you can take it to the place where you actually surf and divide it into two, and when you actually surf, you can enjoy surfing with confidence while maintaining a tightly coupled state When you finish surfing, you can provide a two-part surfboard that you can divide and take home again.

  In addition, considering the convenience of transportation, each part is made of a lightweight material, so the buoyancy is increased accordingly, so even if the fixing screw that joins the divided parts during surfing should loosen, With a structure that allows the user of the surfboard to easily check the tightening state of the screw, when it is noticed that the fixing screw has loosened, the fixing screw can be quickly tightened with a coin while waiting for the wave, Make sure that you don't get over the waves that come in.

  If a screw that can be tightened with hexagon pliers is used instead of the fixing screw that can be tightened with a coin as described above, even if the screw loosens, it cannot be immediately noticed. Only when the screw is quite loose and the screw head protrudes can you notice it. In this case, for example, when a take-off is carried out on a wave, there is a risk that an unexpected injury may be caused by hooking a toe on the protruding screw. However, in the case of the present invention, since the screw structure is as described above, the looseness of the screw can be noticed visually while waiting for a wave, and for example, using a coin carried in a wet suit, You can enjoy surfing safely by tightening to.

  In addition, because it has a structure in which bamboo is overlaid on the foam surface of each of the divided deck surface and bottom surface of the front surfboard body and the rear surfboard body, for example, one of the surfboard body of the front surfboard body or the rear surfboard body Even if the force of the wave is applied only to this part, even if the force received from the wave is concentrated only on one surfboard body without dispersing the force received from the wave to the whole board as in the past, this bamboo material is It is possible to efficiently absorb the force received from the waves and prevent the board from being damaged.

It is the top view which looked at the two-part surfboard concerning one embodiment of the present invention from the deck side. It is the bottom view which looked at the two-part surfboard concerning one embodiment of the present invention from the bottom face side. It is an end view which shows the contact surface of the front surfboard main body of the two-part surfboard which concerns on one Embodiment of this invention. It is an end view which shows the contact surface of the back surfboard main body of the two-part surfboard which concerns on one Embodiment of this invention. It is a perspective view which shows the state fastened to a back surfboard main body in the state which connected the coupling pipe to the front surfboard main body of the two-part surfboard which concerns on one Embodiment of this invention. It is a perspective view which shows the state just before couple | bonding with a front surfboard main body, showing the coupling pipe couple | bonded with the back surfboard main body of the two-part surfboard which concerns on one Embodiment of this invention with a dashed-two dotted line. It is a perspective view which shows the state which couple | bonded the front surfboard main body and back surfboard main body of the two-part surfboard which concern on one Embodiment of this invention from the deck surface side. It is a perspective view which shows the state which couple | bonded the front surfboard main body and back surfboard main body of the two-part surfboard which concern on one Embodiment of this invention from the bottom face side.

  Hereinafter, a two-part surfboard according to the present invention (hereinafter simply referred to as “two-part surfboard” as appropriate) will be described with reference to the drawings showing an embodiment thereof. In the following description, the case where the two-part surfboard according to the present invention is applied to a long board will be described, but the present invention is not limited to this and is also applied to a paddle board that is slightly larger than the long board. It can be applied to a fan board or a short board that is smaller than a long board. That is, the shape, size, and material of each member of the two-part surfboard in the following description are given as an example for convenience of description, and are not limited thereto.

  FIG. 1 is a plan view of a two-part surfboard according to an embodiment of the present invention as viewed from the deck surface side. FIG. 2 is a bottom view of the two-part surfboard according to the embodiment of the present invention as seen from the bottom surface side. FIG. 3 is an end view showing the contact surface of the front surfboard body of the two-part surfboard according to one embodiment of the present invention. In addition, this actual end face is covered with glass fiber, and such a laminated state of each component cannot be recognized from the outside. FIG. 4 is an end view showing the contact surface of the rear surfboard body of the two-part surfboard according to one embodiment of the present invention. In addition, this actual end face is covered with glass fiber, and such a laminated state of each component cannot be recognized from the outside. FIG. 5 is a perspective view illustrating a state in which the coupling pipe is coupled to the front surfboard body of the two-part surfboard according to the embodiment of the present invention and the surfboard body is fastened to the rear surfboard body. FIG. 6 is a perspective view showing a state immediately before being coupled to the front surfboard body while a coupling pipe coupled to the rear surfboard body of the two-part surfboard according to the embodiment of the present invention is indicated by a two-dot chain line. . FIG. 7 is a perspective view showing a state in which the front surfboard body and the rear surfboard body of the two-part surfboard according to the embodiment of the present invention are coupled together from the deck surface side. FIG. 8 is a perspective view showing a state in which the front surfboard body and the rear surfboard body of the two-part surfboard according to the embodiment of the present invention are coupled together from the bottom surface side.

  The two-part surfboard 1 has a structure that can be divided into two parts when transporting in the extending direction of the stringers 110 and 210 and is coupled when surfing, and includes a front surfboard body 100 having a front stringer 110 and It has a rear surfboard body 200 having a rear stringer 210.

  Both the front surfboard main body 100 and the rear surfboard main body 200 are provided with EPS foam polystyrenes 111 and 211 as core materials on the left and right sides of stringers 110 and 210 made of wood, and deck surfaces 130 and 230 and a bottom surface formed thereby. Glass fibers 113 and 213 are wound around the plywood 112 and 212 made of bamboo (bamboo) on the 140 and 240 sides, and the entire periphery is covered with epoxy resins 114 and 214.

  Note that the coupling surfaces 101 and 201 of the front surfboard main body 100 and the rear surfboard main body 200 are formed with sufficient strength through carbon, and these coupling surfaces are each made of a carbon pipe to be described later. The coupling pipe insertion holes 145 and 245 through which the coupling pipe 400 is inserted are formed, and so-called navel and navel holes that serve to prevent the formation of a shape when the front surfboard body 100 and the rear surfboard body 200 are coupled. Positioning and fixing concave portions 151 and 251 and positioning and fixing convex portions 152 and 252 are formed.

  The deck surface 130 and the bottom surface 140 of the front surfboard body 100 of the two-part surfboard 1 are respectively formed with recesses 131 and 141 into which surfboard coupling fixtures 300 described later are fitted. The depth of the recesses 131 and 141 is such that when the surfboard coupling fixture 300 is fitted into the recesses 131 and 141, the surrounding deck surface 130 and bottom surface 140 and the upper surface of the surfboard coupling fixture 300 are substantially flat. The depth is such that no difference in level occurs.

  In addition, in the deck surface 230 and the bottom surface 240 of the rear surfboard body 200 of the two-part surfboard 1, recessed portions 231 for fitting surfboard coupling fixtures 300 described later in the width direction in the vicinity of the coupling surfaces 101 and 201, respectively. 241 is formed. The depth of the recesses 231 and 241 is such that when the surfboard coupling fixture 300 is fitted into the recesses 231 and 241, the surrounding deck surface 130 and bottom surface 140 and the upper surface of the surfboard coupling fixture 300 are substantially flat. The depth is such that no difference in level occurs.

  The surfboard coupling fixture 300 of the two-part surfboard 1 has an elongated plate shape, and has screw holes 311 and 321 in the vicinity of both ends thereof, when the front surfboard body 100 and the rear surfboard body 200 are coupled. It is provided so as to straddle the connecting lines 105 and 205 appearing on the deck surface and the bottom surface, respectively. In the case of the two-part surfboard 1 according to the present embodiment, the surfboard coupling fixture 300 includes an elongated rectangular plate portion 350 and circular plate portions 310 and 320 provided at both ends thereof, and each circular plate portion has a surfboard coupling fixture. In the state where the front surfboard body 100 and the rear surfboard body 200 are coupled to each other, screw fixing holes 311 and 321 for passing fixing screws 500 for fixing both are formed.

  In the present embodiment, the surfboard coupling fixture 300 is made of a plastic ABS resin, but is not limited to this, and a similar material may be substituted.

  In addition, the deck surfaces 130 and 230 and the bottom surfaces 140 and 240 of the front surfboard main body 100 and the rear surfboard main body 200 are connected to the front surfboard main body 100 and the rear through the fixing screws 500 in the screw fixing holes 311 and 321 of the surfboard coupling fixture 300. A female screw portion (only the female screw portions 132 and 232 on the deck side are shown in FIGS. 5 and 6) for fixing the surfboard body 200 in a coupled state is formed.

  In the present embodiment, the fixing screw 500 is made of plastic, and a screw having a size of 8 m / m is used. The head is formed flat so as not to protrude from the deck surfaces 130 and 230 and the bottom surfaces 140 and 240 of the surfboard bodies 100 and 200, and a minus groove 511 is formed in the head 510. The minus groove 511 has a groove width and a groove depth such that the fixing screw 500 can be screwed into the screw holes 311 and 321 formed in the front surfboard body 100 and the rear surfboard body 200 through the coin. ing.

  Next, how to assemble the two-part surfboard 1 will be described. First, the coupling pipe 400 is inserted into the coupling pipe insertion holes 145 and 245 provided in the front surfboard body 100 and the rear surfboard body 200, respectively, and the positioning coupling fixing recess 121 and the positioning coupling fixing projection provided in the front surfboard body 100. The front surfboard main body 100 and the rear surfboard main body 200 are coupled by fitting the positioning coupling fixing convex portion 222 and the positioning coupling fixing concave portion 221 of the rear surfboard main body 200 provided at a position corresponding to this position 122.

  In the two-part surfboard 1 according to the present embodiment, as an example, the front surfboard body 100 is one of the two connection pipe insertion holes 145 and 245 provided on the connection surfaces of the front surfboard body 100 and the rear surfboard body 200. Each of the coupling pipes 400 is inserted into one of the coupling pipe insertion holes 145 and 245 of the rear surfboard body 200 by a length that is half of the longitudinal direction. The other half length of the coupling pipe 400 protruding from the coupling surfaces 101 and 201 is inserted into the coupling pipe insertion holes 145 and 245 provided in the other coupling surfaces 101 and 201 of the front surfboard body 100 or the rear surfboard body 200. . 5 and 6 show a state where the coupling pipe 400 is inserted into the front surfboard body side.

  Then, the coupling pipe 400 is pushed into the insertion holes 145 and 245 described above until the coupling surfaces of the front surfboard body 100 and the rear surfboard body 200 slightly face each other.

  Next, the positioning and fixing convex portion 222 provided on one side in the width direction of the coupling surface 201 of the rear surfboard body 200 is positioned in the positioning and fixing concave portion 121 provided on one side in the width direction of the coupling surface 101 of the front surfboard body 100. The positioning fixing concave portion 221 provided on the other side in the width direction of the coupling surface 201 of the rear surfboard body 200 is aligned with the positioning fixing convex portion 122 provided on the other side in the width direction of the coupling surface 101 of the front surfboard main body 100. Align to.

  Then, the positioning and fixing convex portions 122 and 222 provided on the coupling surfaces 101 and 202 are fitted into the mating positioning and fixing concave portions 121 and 221, and the respective contact surfaces of the front surfboard body 100 and the rear surfboard body 200 are set. Make a close contact.

  Next, in a state where the front surfboard body 100 and the rear surfboard body 200 are coupled, the deck surface 130, 230 and the bottom surface 140, 240 of the front surfboard body 100 and the rear surfboard body 200 are fixed to the surfboard coupling fixture 300, respectively. The front surfboard main body 100 and the rear surfboard main body 200 are integrated with each other in a state where the female screw portions provided on the front surfboard main bodies 100 and 200 are screwed through 500.

  In the two-part surfboard 1 according to the present embodiment, either one of the deck surfaces 130 and 230 and the bottom surfaces 140 and 240 of the front surfboard body 100 and the rear surfboard body 200 faces upward, and a joint portion between them. The surfboard coupling fixture 300 is fitted into the recesses 131, 141, 231, and 241 provided so as to straddle substantially the center in the width direction.

  Then, female screw portions formed on the front surfboard main body 100 and the rear surfboard main body 200 respectively through screw fixing holes 500 formed at both ends of the surfboard coupling fixture 300 through resin fixing screws 500 (FIGS. 5 and 6). Then, tighten the screws on the female screw portions 132 and 232 on the deck surface side. At the time of this screw tightening, for example, a coin is inserted into the flat minus groove 511 of the flat head 510, and the coin can be turned firmly by turning the coin.

  After fixing the surfboard coupling fixture 300 to one of the deck surfaces 130, 230 and the bottom surfaces 140, 240 of the front surfboard body 100 and the rear surfboard body 200 in this way, the remaining deck surfaces 130, 230 or The fixing screws 500 are screwed into the bottom surfaces 140 and 240 in the same manner, and the surfboard coupling fixture 300 is fitted and fixed firmly. Accordingly, the front surfboard body 100 and the rear surfboard body 200 can be reliably combined and integrated by a simple operation.

  Since the minus groove 511 of the fixing screw 500 on the deck surface 130, 230 side screwed with the surfboard coupling fixture is formed to the extent that a coin can be fitted and screwed, the fastening state of the fixing screw 500 is two. It can be easily confirmed visually while the split surfboard 1 is in use.

  The procedure of the above-described embodiment is merely an example, and a different procedure may be used as long as the procedure is easy for the user to assemble. Moreover, about the case where a front surfboard main body and a rear surfboard main body are divided | segmented after finishing surfing, the division | segmentation operation | work should just be performed in the reverse procedure to the procedure mentioned above.

  Next, the operation of the two-part surfboard according to the present invention will be described. This two-part surfboard is simple in structure and easy to assemble and disassemble, so it is easy to use for those who are trying to surf for the first time with a long board, for example. Moreover, since the material of each component is made of the above-described material, it can be carried in a dedicated bag in a state of being divided into two parts by weight reduction and without difficulty. In particular, bamboo plywood is stacked on the inside of the deck and bottom, so the board has a balanced balance between the rigidity and flexibility of the board itself, so you can enjoy it comfortably when you actually surf. it can.

  Further, since the respective contact surfaces of the front surfboard main body and the rear surfboard main body are fitted into one positioning coupling fixing concave portion with the other positioning coupling fixing concave portion, there is no play on the contact surface. . Therefore, this abutting surface portion of the deck surface can be made flush without causing a step, for example, so-called walking is used to accelerate the board at the moment of taking off the wave or riding on the wave There is no risk of your fingertips getting caught in this step when trying to walk on the longboard toward the nose.

  Similarly, since the joint surface between the front surfboard body and the rear surfboard body is firmly coupled to each deck surface and the bottom surface by the surfboard coupling fixture and the fixing screw, there is no gap in the joint surface, for example, There is no risk of your fingertips getting caught in this gap when you are walking off the wave or walking on the longboard toward the nose.

  In addition, the screw groove of the fixing screw screwed with the surfboard coupling fixture is formed to the extent that it can be screwed in with a coin, so the fastening state of this fixing screw is easy to visually check while using the two-part surfboard Can be confirmed. In addition, even during the above-mentioned walking, the bulge caused by the loosening of the fixing screw can be immediately noticed with the sense of the sole of the foot. This makes it possible to always check the tightness of the screw while waiting for a wave, and if you find a loose screw while waiting for a wave, put it between the wet suit and your body or follow the key case. You can remove the coins and fasten the screws quickly before the best wave comes to eliminate the looseness of the fixing screws, so you can continue surfing with confidence.

  In addition, considering the convenience of transportation, each part is made of a lightweight material, so the buoyancy is increased accordingly, so even if the fixing screw that joins the divided parts during surfing should loosen, With a structure that allows the user of the surfboard to easily check the tightening state of the screw, when it is noticed that the fixing screw has loosened, the fixing screw can be quickly tightened with a coin while waiting for the wave, Make sure that you don't get over the waves that come in.

  If a screw that can be tightened with hexagon pliers is used instead of the fixing screw that can be tightened with a coin as described above, even if the screw loosens, it cannot be immediately noticed. Only when the screw is quite loose and the screw head protrudes can you notice it. In this case, for example, when a take-off is carried out on a wave, there is a risk that an unexpected injury may be caused by hooking a toe on the protruding screw. However, in the case of the present invention, since the screw structure is as described above, the looseness of the screw can be noticed visually while waiting for a wave, and for example, using a coin carried in a wet suit, You can enjoy surfing safely by tightening to.

  In addition, because it has a structure in which bamboo is overlaid on the foam surface of each of the divided deck surface and bottom surface of the front surfboard body and the rear surfboard body, for example, one of the surfboard body of the front surfboard body or the rear surfboard body Even if the force of the wave is applied only to this part, even if the force received from the wave is concentrated only on one surfboard body without dispersing the force received from the wave to the whole board as in the past, this bamboo material is It is possible to efficiently absorb the force received from the waves and prevent the board from being damaged.

  Note that the above-described embodiment and its modifications are merely examples of the present invention, and it is not necessary to limit the present invention to the above-described dimensions, materials, and shapes without departing from the scope of the present invention. Needless to say, the design can be changed as appropriate. That is, for example, just by changing the dimensional relationship, as described above, the structure of the two-part surfboard according to the present invention can be applied to a paddle board, and is also applicable to a fan board and a short board as well as a long board. Is possible.

DESCRIPTION OF SYMBOLS 1 Two-part surfboard 100 Front surfboard main body 101,201 Join surface 105,205 Join line 110,210 Stringer 111,211 EPS foam polystyrene 112,212 Bamboo plywood 113,213 Glass fiber 114,214 Epoxy resin 145,245 Join pipe insertion Holes 121, 221 Positioning coupling fixing concave portions 122, 222 Positioning coupling fixing convex portions 130, 230 Deck surfaces 131, 141, 231, 241 Recessed portions 132, 232 Female screw portions 140, 240 Bottom surfaces 151, 251 Positioning coupling fixing concave portions 152, 252 Positioning coupling fixing projection 200 Rear surfboard body 210 Rear stringer 300 Surfboard coupling fixture 310, 320 Circular plate portion 311, 321 Screwing hole 350 Rectangular plate part 400 Connection pipe 500 Fixing screw 510 Head 511 Minus groove

Claims (2)

In the extension direction of the stringer, in the two-part surfboard that can be divided into two when transporting and can be combined when surfing,
A front surfboard body having a front stringer and a rear surfboard body having a rear stringer;
At the contact surfaces of the front surfboard main body and the rear surfboard main body, at least two connecting pipe insertion holes are formed at predetermined intervals in the board width direction, and in the vicinity of the respective connecting pipe insertion holes. Each has either a positioning coupling fixing convex part or a positioning coupling fixing concave part of the front surfboard body and the rear surfboard body,
A surfboard coupling fixture is provided on the deck surface and the bottom surface of each surfboard body so as to straddle the coupling lines that appear on each of the deck surface and the bottom surface when the front surfboard body and the rear surfboard body are coupled,
The surfboard coupling fixture has an elongated plate shape, has screw holes in the vicinity of both ends, and a female screw portion that fixes the front surfboard body and the rear surfboard body in a coupled state through screws through the screw holes. It is formed on the deck part and bottom part of the front surfboard body and the rear surfboard body,
A coupling pipe is inserted into a coupling pipe insertion hole provided in each of the front surfboard main body and the rear surfboard main body, and a concave portion or a convex portion provided in the front surfboard main body and a convex portion of the rear surfboard main body provided in a position corresponding thereto. A recess is fitted to the front surfboard body and the rear surfboard body, and the front surfboard body and the rear surfboard body are connected to the deck surface and bottom surface of the front surfboard body and the screw through the screws to the surfboard coupling fixture. With the screw tightened, the surfboard body and the rear surfboard body can be integrated.
The front surfboard and the rear surfboard are configured by stacking bamboo plywood on the top and bottom surfaces of the foam material partitioned by the stringer made of wood, and further covering the entire surface with glass fiber and epoxy resin, Carbon pipe is used as the coupling pipe,
The two-part surfboard characterized in that the fixing screw tightened with the surfboard coupling fixture can be tightened with a coin and its tightened state can be confirmed during use of the two-part surfboard.   The two-part surfboard according to claim 1, wherein the two-part surfboard can also be used as a paddle board.

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