JP2007531659A - Modular assembly system for floating structures such as boats - Google Patents

Abstract

[Structure] A structure composed of a molded structure (16, 42) that can be joined and used as a boat or other floating structure. The molded structure is made of rotationally molded plastic material and has the same shape. Each molded structure has an outer surface (14A, 14E, 14F, 22) that has at least two zones. These zones are preferably flat and are arranged at different angles to each other so that one of the molded structures can be joined in an opposing relationship and in different arrangements. The cross section of the molded structure can be configured with the same hexagonal shape. Molded structures can be joined end-to-end or side-to-side. A hole (18, 30, 56, 60, 62) is cut into each face of the molded structure to form a window or allow access to the interior of the molded structure.
[Selection] Figure 7

Description

  The present invention relates to a modular assembly system for floating structures. The present invention was invented in the course of developing a boat building system that uses components made of synthetic plastic material molded by a rotational molding method. The present invention is not limited to boats, and can be applied to floating platforms and floating storage ships.

  Small boats such as kayaks, surfboards, runabouts and similar pleasure crafts that consist of an integrated hull / deck unit have been built from rotationally molded plastics for quite some time. In the rotational molding method, powdery medium density polyethylene or other suitable plastic material is charged into a female mold having the reverse shape of the object to be molded, and then the female mold is rotated in a heated state. This heating is performed in a dedicated oven, for example. First, the powder is fluidized and flows out to the inner surface of the female mold. When the female mold surface reaches a predetermined temperature, the powder particles on the surface begin to melt and adhere to the surface. As heating continues, more particles melt and adhere to each other, eventually forming a layer of uniform thickness on the female surface. When the female mold is cooled, this layer is solidified to form a hollow shell-shaped molded body.

  Since the rotational molding method is a well-known technique, further detailed explanation is omitted. In addition, although polyethylene is used in many moldings of such known boats, other plastic materials can also be suitably used. The benefits of using polyethylene and other materials to form boats and the like are well known. Such boats are generally recognized as low cost and tough, and are probably a reasonable perception. In addition, the density of polyethylene and other plastic materials used for rotational molding is less than the density of water, so small boats built by rotational molding have inherent buoyancy, such as aluminum or GRP (glass fiber reinforced plastic). It is larger than a boat made of resin.

  From a marketing point of view, the appearance of the structure obtained by the known rotational molding method is seen as a drawback for leisure boats, but this is not so much for fishing boats and other commercial boats. Not important. The company with which the applicant is involved has been building a small fishing boat for a long time, with a hull length of less than 6 m and consisting of an integral hull / deck unit formed by rotational molding. The size of such units is in principle limited by the size of the heating oven used in the rotational molding process. From a business point of view, there is no established market for boats consisting of an integral hull / deck unit with a hull length of, for example, 10 meters and formed by rotational molding. Preparing an oven of the size is considered a great danger.

  The present invention relates to attempts to address this problem, at least to a significant extent.

The present invention comprises a molded structure that can be joined and used as a floating structure,
A first molded structure and a second molded structure, each of the first and second molded structures being manufactured by a rotational molding method and having an outer surface having a first zone and a second zone; With respect to the zone and the second zone, in a first arrangement in which the first zone of the first molded structure is opposite to one of the zones of the second molded structure, or the second zone of the first molded structure is Provided is a structure whose shape is set so that the first molded structure can be joined to the second molded structure in a second arrangement that is opposed to one of the zones of the second molded structure. .

  Further, according to the present invention, the molded structure has a third molded structure having an outer surface having a first zone and a second zone, and the first molded structure has a first structure for the first zone and the second zone. In a first arrangement in which one zone is opposed to one of the zones of the second molded structure, or the second zone of the third molded structure is opposed to one of the zones of the second molded structure In the second arrangement, there is provided a structure whose shape is set so that the third molded structure can be joined to the second molded structure.

  In one embodiment of the present invention, the first zone and the second zone of each molding structure are each composed of a flat portion on the outer surface of the molding structure, and these flat portions are arranged at different angles from each other.

  In another aspect of the invention, the cross-section of the molded structure is substantially the same. According to the effect of this invention, the cost of the boat using the structure of a shaping | molding structure and another floating structure can be reduced. Such a molded structure can be produced, for example, from a single mold and the use of two molds can be avoided. In addition, it is obvious that the molded structure molded with a single mold has substantially the same shape when released. Obviously, any structure can change the cross-section of the molded structure after release. For example, in the case of a boat, a hole can be cut in the molded structure in order to provide a hatch or a porthole. As far as the present specification and claims are concerned, it is optional to change the cross section of the molded structure in this way.

  The same is true for other minor changes to the molded structure.

  In the present invention, it is advantageous that the cross-sections of the three molded structures are the same hexagon. Therefore, the hexagonal cross section consists of six straight portions, and the angles of adjacent portions are equiangular.

  If a hexagonal shaped structure with the same cross section is used, in any case, one flat surface portion of one molded structure is opposed to one flat surface portion of another molded structure. Many such molded structures can be joined together in various arrangements that can be placed. Molded structures that are molded in a single mold and thus have approximately the same flat surface portion can therefore be used to build various boats and other floating structures.

  In yet another aspect of the present invention, the end surface of at least one molded structure is placed in an opposing relationship with the end surface of the fourth molded structure to which the at least one molded structure is joined. By joining the ends of the forming structure, a long boat or other floating structure can be manufactured from a rotational forming structure whose length is limited to the size of the forming device.

  In the present invention, it is advantageous to form the molded structure from a molded plastic material.

  Further, the present invention can be extended and applied to a hull / deck structure composed of a structure of these molded structures.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

  To avoid repetition, in this disclosure the term “embodiment” or like terms is used to indicate that the description is for illustrative purposes only. Note that the description can be changed and is not intended to limit the scope of the invention. Many of these changes are considered obvious to the reader. On the other hand, in the absence of this type of reference, the scope of the invention is limited to what is described without departing from the context.

  As will be apparent to the reader, the accompanying drawings are schematic in nature, but illustrate the configuration of a floating structure, particularly a molded structure when building a boat through assembly operations. As the molded structure of the type used in the present invention, medium density polyethylene can be used, but any suitable material can be used as long as it can be used in the rotational molding method. Specifically, PVC and cross-linked polyethylene can be used, and concrete can also be used in some cases. As already mentioned, rotational molding methods are known. Accordingly, the use of the rotational molding process itself, or the use of the materials used in the rotational molding process itself, does not constitute a requirement of the present invention in building a boat.

  Similarly, the necessary equipment for constructing the hull / deck structure into an actual boat, components such as internal anchorage equipment, external anchorage equipment, anchorage equipment, navigation equipment, fishing equipment, and all these mounting methods are also known. It is. Therefore, since these do not constitute the requirements of the present invention, it is not necessary to explain them in detail.

  In the figure, reference numeral 10 denotes a hull / deck structure that can constitute a catamaran boat. In order to avoid complications, this boat is hereinafter referred to as boat B. The attached boat does not show the completed boat.

  1 to 6 and FIG. 10, the molding structures are illustrated as being slightly separated from each other at some points, for the sake of clarity of illustration. Actually, at these portions, the respective molded structures are structurally joined to each other in an opposing relationship.

  In this embodiment, the boat structure consists of eight molded structures, each made of polyethylene material and manufactured by a rotational molding method using a suitable mold. One of the unique features of a molded structure produced by rotational molding is essentially the removal of one or more small vents necessary to release the gas generated by molding during mold release, A completely closed hollow shell is obtained. One advantage gained from using such molded structures to build boats is that they are inherently watertight and therefore can float. The holes described below for some examples can be cut into all the molded structures during the construction of the boat B. Some of these holes are large enough to reduce the buoyancy of individual molded structures unless they are closed with a watertight door or the like (a technique well known in the shipbuilding field). Nevertheless, it is natural that the fact that each molded structure is sealed first simplifies the design and construction of boats that are less likely to sink when bad weather or a hole is opened. This buoyancy is further enhanced by the fact that the density of polyethylene is less than the density of water. The material itself is buoyant.

  As already described, the molded structures manufactured from any one mold are identical to each other at least at the time of mold release. That is, in the case of the hull / deck structure 10, the first group M1 is composed of three mutually identical molded structures manufactured with the first mold, and the second group M2 is manufactured with the second mold 2 The third group M3 is composed of two mutually identical molded structures manufactured with the third mold, and the remaining one molded structure is the fourth mold M4. Manufactured by. The entire molded structure will be described later. Since the molding structures in each of the groups M1 to M3 are the same, only one molding structure among the molding structures in each group will be described.

  Regarding the six molded structures constituting the first group M1, the second group M2, and the fourth group M4, it is an important condition that the cross-sectional shapes across the hull are the same, and a hexagon is illustrated as an example. However, other cross-sectional shapes are possible, some of which will be described later with reference to the drawings. The hexagonal cross section is as seen in FIGS. Such a cross-sectional shape has a constant size over the entire length of the molded structure. That is, each of the molded structures of the groups M1 to M3 has a cross section with six flat rectangular segments 14A, 14B, 14C, 14D, 14E, and 14F having a mutual arrangement angle of 120 ° in the longitudinal direction of the hexagon. It consists of a cylindrical side wall 12 that runs. The segments are equal in size and run longitudinally from one end of the molded structure to the other. Each segment has a flat outer surface.

  Each molding structure 16, 18, 20 of the first group M1 includes a flat front wall 22 extending over the entire front end of the molding structure and a flat rear wall 24 extending over the entire rear end of the molding structure. These front and rear walls 22, 24 are perpendicular to the outer surfaces of the segments 14A-F.

  The molded structure 16 is disposed between the molded structures 18 and 20. In this state, the entire outer surface of the segment 14A of the molding structure 16 is opposed to the entire outer surface of the segment 14D of the molding structure 18. Further, the entire outer surface of the segment 14 </ b> C of the molding structure 16 is opposed to the entire outer surface of the segment 14 </ b> F of the molding structure 20. The molded structures 16, 18 are joined by suitable fastening means, in this embodiment by means of bolts 26 (see FIG. 12) spaced around the interconnecting segments 14C, 14F and fastening them together. To do. It goes without saying that the holes 28 for receiving the bolts need to be formed in the side walls 12 in the interconnecting segments. The molded structures 16 and 20 are joined in the same manner with the segments 14A and 14D connected to each other being tightened.

  The holes 30 and 32 are cut in alignment with the interconnecting segments of the walls of the molded structures 16 and 18 to provide doorways and other manholes that allow the rider to pass through the two molded structures. Sometimes it is necessary. As described above, the manhole is configured to be closed by the watertight door when the boat B is equipped. Further, bolts or other fastening means may be provided around the holes 30 and 32 to tighten the segments connected to each other. Similar holes can be formed in the interconnecting segments of the molded structures 16,20.

  The molding structures 36 and 38 of the second group M2 are disposed in front of the corresponding molding structures 18 and 20, respectively. Each forming structure 36, 38 also comprises a cylindrical side wall 12 'running in the longitudinal direction. This side wall is composed of six segments 14A ′, 14B ′, 14C ′, 14D ′, 14E ′, and 14F ′ that are hexagonal in cross section at the rear end of the molded structure and are arranged at equal angles with each other. These segments run forward in the longitudinal direction from the rear ends of the forming structures 36,38. A flat rear wall 24 ′ formed integrally with the side wall 12 extends over the entire rear ends of the molded structures 36, 38. At the rear end, the rear wall 24 'is perpendicular to the side wall 12', more specifically the outer surface of the segments 14A'-F '. Thus, where the molded structures 36, 38 abut against the molded structures 18, 20, respectively, the segments 14A'-F 'are in the same plane as the outer surfaces of the respective segments 14A-F, In front of the rear end, the cross-sectional shapes of the segments 14A ′ to F ′ are different from the cross sections of the segments 14A to F14, and are different from each other as described later.

  One molding structure 42 molded by the fourth molding die M4 is arranged in alignment with the front of the molding structure 16. The molding structure 42 is also constituted by a cylindrical side wall 12 '' running in the longitudinal direction. This side wall has a hexagonal cross-sectional shape at the rear end of the molded structure, and six segments 14A ″, 14B ″, 14C ″, 14D ″, 14E ″ arranged at equal angles to each other. 14F ″. These segments run in the longitudinal direction from the rear end of the molding structure 42 forward, and a flat rear wall 24 ″, which is integrally molded, extends over the entire rear end of the molding structure 42. At the rear end, the rear wall 24 "is perpendicular to the side wall 12", more specifically the outer surface of the segments 14A "-F". Therefore, in the place where the molding structure 42 abuts on the molding structure 16, the segments 14A ″ to F ″ exist on the same plane as the outer surfaces of the segments 14A to F of the molding structure 16, but the molding structure In front of the rear end of the body 42, the cross-sectional shapes of the segments 14A ″ to F ″ are different from the cross sections of the respective segments 14A to F14, and are different from each other as will be described later.

  When the molding structures 36, 38, and 42 are arranged as described above, the flat portion of the outer surface of the segment 14F ′ (molding structure 36) becomes the segment 14C ″ (molding structure 42) depending on their size and shape. Abuts against the flat portion of the outer surface in an opposing relationship. Similarly, the flat portion of the outer surface of the segment 14D ′ (molding structure 38) contacts the flat portion of the outer surface of the segment 14A ″ (molding structure 42) in an opposing relationship.

  Formed structures 36, 38, 42 are formed by suitable fastening means such as bolts 44 received in holes 48 that are formed at intervals around the peripheries of interconnecting walls 24 ′, 24 ″, 22 and clamp them. It joins to each shaping | molding structure 18,20,16. Similarly, the molded structures 36, 38, and 42 are fastened by bolts 26 to the outer periphery of the area where the flat portions of the outer surface of each segment are connected to each other.

  It is sometimes necessary to cut alignment holes (e.g., 30 ', 30 ", etc.) in the abutting walls of each molded structure. As in the case described above, tightening means such as bolts can be provided around these alignment holes to tighten these walls.

  In the case of this embodiment, the total vertical height of each molded structure of the first group M1 to the third group M3 is 2.05 meters. Due to the characteristics of the rotational molding method, the thickness of each molded structure is uniform at any point and is approximately 3 cm. Accordingly, when the wall thickness is expected, the vertical height inside each molded structure is 1.99 m. Therefore, even when the floor is provided on the bottom of the molded structure when the boat B is installed, Sufficient headroom can be secured for each of the molded structures. Other suitable heights can also be selected.

  As already described, the hull / deck structure 10 can be outfitted as a catamaran boat B. In this configuration, the pair of aligned forming structures 36, 18 and 38, 20 together with the forming structures 36, 38 disposed at the bow end of the hull constitute the two hulls of the boat. For this reason, the segments 14A ′ and 14C ′ of each of the segment forming structures are inclined inward toward the segment bow side end as indicated by reference numeral 50. Similarly, the horizontal segment 14B ′ provided at the bottom of the forming structures 36 and 38 is also inclined upward toward the bow end, as indicated by reference numeral 52. In either case, this will cause the hull to clean the water.

  The hull structure is structurally joined and separated by a structure consisting of a pair of aligned shaped structures 42, 16 appearing on the water surface. This arrangement can be outfitted as a saloon with a steering station at the bow. For this purpose, the forming structure 42 is provided with a strongly inclined portion 54 which is provided across the hull and runs between the segments 14D ″ and 14F ″. A hole 56 is cut in this portion, and the front glass is disposed.

  Even if the saloon appears on the surface of the water, the horizontal segment 14B ″ disposed at the bottom of the forming structure 42 has a boat design that is excellent in tilting upward toward the bow, as indicated at 58. is there. Therefore, the bow of the boat B can cut the waves cleanly even when the sea level reaches the position of the saloon, as is often experienced at sea.

  For the horizontal upper segments 14E, 14E ′ and 14 ′ ″, in the case of boat B, it is preferable to constitute a substantial deck area. These deck areas are accessed using, for example, doorways or manholes formed by the holes 60 cut into the segments 14D, 14F of the molded structure 16 and / or the segments 14D ″, 14F ″ of the molded structure 42. can do. As before, these manholes can be sealed by watertight doors.

  When another hole 62 is cut in the segments 14D, 14D ′, 14F, and 14F ″, a known type of porthole can be accommodated.

  The two molded structures 64 and 66 of the third group M3 are attached to the stern side ends of the molded structures 18 and 20, respectively. The molding structures 64 and 66 are the same as each other, but may be configured to be slightly different from the molding structures of the first to third groups M1 to M3. That is, the cross section may be a shape other than a hexagon. Instead of the hexagon, each molded structure may be a semi-hexagon having the same size as the molded structures of the first to third groups M1 to M3. Specifically, for the molded structure 64, three segments 14A ″ ″, 14B ″ ″ and 14C ″ ″ having the same size as each of the segments 14A, 14B and 14C and the same plane as these are used. It consists of a side wall 12 ″ ″ running in the longitudinal direction. Further, the molded structure 64 is constituted by a front wall 70 and a rear wall 72 that are each perpendicular to the side wall 68. Finally, the molded structure 64 is constituted by an upper wall 76 that runs between the upper ends of the end walls 70, 72 and also runs between the upper ends of the segments 14A "" and 14C "". In this way, the molded structure 64 (similarly, the molded structure 66) can be formed of a hermetic shell that is integrated when released from the third mold M3. The front wall 70 is disposed so as to face the lower half of the rear wall 24 of the molded structure 18. In the same manner as described above, the forming structure 64 is formed by an appropriate fastening means such as a bolt 44 that passes through holes arranged at intervals on the outer periphery of the interconnecting portions of the front wall 70 and the rear wall 24 and fastens them. (Similarly, the molded structure 66) is joined to the molded structure 18. The front wall 70 can be provided with a hole for forming a manhole similarly to the holes provided at other locations, and the hole for receiving the fastening means is also drilled around the manhole and joined to each other. The wall part can be tightened. If the hole 78 is provided in the upper wall to form a hatch, the molded structure 64 can be moved in and out. The hatch can be closed by a known type of watertight hatch cover.

  Each molded structure 64, 66 is advantageously designed to receive the boat B engine and propeller shaft in a known manner. Each propeller shaft is installed through a hole cut in the lower segment 14B "" of the forming structure. This hole will be closed by known means affixed to the segment 14B "" for mounting the propeller shaft bearing and gland.

  1-6 are the same scale, and as can be seen, the full length of the specific hull / deck structure 10 shown in FIGS. 1-6 is 13 meters and the beam length is 6 m. . The length of the hull / deck structure 10 can be extended by attaching two or more sets of M1 molded structures joined as described above in a state where the ends are in contact with each other.

  Since the outer surfaces of the various wall segments are in the same plane as described above, such coplanar surfaces provide a continuous smooth surface extending from the front to the back of the boat. As is well understood, this is important to smooth the path of the hull that drains the water.

  According to the effects of the present invention, the same molded structure can be used for boats and other floating structures having various configurations. For example, in the case of the molded structure described above and illustrated in the accompanying drawings, a three-body boat having a cross-sectional shape as shown in FIG. 14 which is an overall schematic end view of the stern of the hull / deck structure 100 is shown. It can be used to build the targeted hull / deck structure 100. Here, a group consisting of six of the molded structures molded by the molding die M1 is used as a sub-structure 102 that forms a substantial part of a boat with three hulls using the M1 molded structures 104, 106, 108. Join. In this boat size, the boat is constructed by arranging two or more sub-structures 102 at the front and back. As in the case of the boat B, the molding structure from the molding die M2 is arranged on the bow side of each of the molding structures 104 to 108, and the molding structure from the molding die M4 is placed at the bow of the molding structure 110 at the upper center. What is necessary is just to arrange | position to the side. The molding structure from the molding die M3 may be disposed at the rear end of each of the molding structures 104, 106, and 108.

  FIG. 15 is a similar schematic diagram illustrating a structure 120 that is one specific example of a structure that can be used as a floating platform. In this example, this structure is comprised of three floating shell bodies that take the form of the molded structures 122, 124, 126 from the mold M1. These shell bodies are separated by two watertight shell bodies in the form of two molding structures 128, 130 from the mold M3. These two molded structures 128 and 130 are floated on the water surface by the molded structures 122 to 126 in use.

  In one variation, the structure 120 can be provided with further molding structures 128 ′ and 130 ′ molded with the molding die M 3 and provided below the molding structures 128 and 130.

  In yet another variation, the structure 120 can be turned upside down as a variation of the floating platform. In this modification, all the modules can be set at the water surface position, and the two channel-shaped spaces 132 can be set between the forming structures 122, 124, and 126, so that they can be configured particularly suitable for certain applications.

  FIG. 16 illustrates a method of joining a series of modules from molds M1, M3 to form a construct 140 for a floating platform having a reasonable size and having a continuous flat top or deck. FIG. As is apparent from the above description, the platform can be increased in size by joining a series of constituent members together in a honeycomb structure. In the case of the structure 140, the direction of the longitudinal axis of the molded structure is vertical.

  The effective shape of each module is not necessarily limited to the shape shown in the drawings described so far. FIG. 17 is a diagram showing a module 150 having an asymmetric shape, which is molded with a single mold. Each module has two wall segments 152, 154. Either of these can be set in opposing relation to the corresponding wall segment of the other module when the modules are joined in the configuration shown.

  As will be appreciated by those skilled in the art, reinforcing ribs to impart sufficient strength to each location of the molded structure and prevent the plastic material from distorting when cooled in the mold, for example. It is necessary to provide a member such as a gusset. As is also well known, these members can be formed as an integral part of the molded structure during the molding process. For example, FIG. 18 shows a wall segment (in this case, segment 14B) integrally formed with a rib 99 extending in the longitudinal direction. These ribs not only reinforce the wall segment but also enhance the draining action of the outer surface of the segment when the molded structure is used for the hull.

  The modules shown in FIGS. 14 to 17 can be joined in substantially the same manner as described for the structure 10. As will be apparent to those skilled in the art, these molded structures can be joined using other joining means. Furthermore, effects other than the above-described functions and effects of the structure 10 can be obtained by the structures shown in FIGS. 14 to 17, and description thereof will be omitted.

  FIG. 13 shows another means of joining the molded structures, which consists of a plate 90 of plastic material that overlaps a joint 92 between the two molded structures. A recess 94 is formed in the wall of the forming structure during the forming process to receive a plate 90 that can be bolted to the wall by bolts 96 or other fastening means.

  Alternatively or additionally, the two molded structures can be welded together at the joint between them, as indicated by reference numeral 98 in FIGS. It is difficult to form a welded joint between two rotomolded components that are strong enough in actual applications by themselves, but such welded joints not only make the joint watertight, It is often effective to complete the appearance of.

  As is clear from the above embodiments, two or more different structures can be joined to each other to form a structure that can be used as a boat or other floating structure. These molded structures are made of molded plastic material. Each molded structure has an outer surface with at least two zones configured to allow one molded structure to be joined to another molded structure in at least two arrangements. In one such arrangement, one first zone of a molded structure is in opposition to one of the zones of another molded structure. In another arrangement, the second zone of the one molded structure is in opposition to one of the zones of the other molded structure.

  Further, such a structure can be composed of three or more molded structures, and in this case, the outer surface shape is set so that the molded bonded bodies can be bonded in the same manner.

  Any possible mechanical equivalent arrangements and / or modifications and / or improvements in the foregoing description and / or illustrations are intended to be granted by the application of which this specification forms a part and claims priority. Should not be excluded from the scope of such patents, and the scope of such patents shall be limited by requirements other than those required to distinguish the claimed invention from the prior art. It is not something to receive.

FIG. 6 is a side view showing a hull / deck structure of a twin-hull boat (catamaran boat) using a number of modular molded structures. It is a side view which shows a pair of shaping | molding structure in an assembly arrangement | positioning shown in FIG. FIG. 5 is a side view taken along arrow A in FIG. 4 showing three of the molded structures shown in FIG. It is a top view which shows the hull / deck structure shown in FIG. It is a top view which shows the pair of the shaping | molding structure shown in FIG. It is a top view which shows the shaping | molding structure shown in FIG. FIG. 3 is an isometric view showing the two molded structures shown in FIG. 2, showing a portion of one molded structure in a state separated from the other molded structure. FIG. 8 is an isometric view similar to FIG. 7, showing two of the molded structures shown in FIG. 3. FIG. 4 is an isometric view showing two of the molded structures shown in FIG. 3. FIG. 3 is a rear end view of the arrow B showing the hull / deck structure shown in FIG. 1. FIG. 5 is an enlarged view showing details of a joint that can be considered between two molded structures. FIG. 5 is an enlarged view showing details of a joint that can be considered between two molded structures. FIG. 5 is an enlarged view showing details of a joint that can be considered between two molded structures. It is an end view which shows the hull / deck structure of a three-body boat. It is a figure which shows the structure which consists of a shaping | molding structure which can be used as a floating platform. It is a figure which shows the structure which consists of a shaping | molding structure which can be used as a floating platform. It is a figure which shows the structure which consists of another shaping | molding structure which can be used as a floating structure. It is a fragmentary figure which shows another example of a shaping | molding structure.

Explanation of symbols

B: Boat
10: Hull / deck component,
M1: first group,
M2: second group,
M3: third group,
12: cylindrical side wall,
14: Segment,
16, 18, 20: Molded structure,
22, 24: Wall.

Claims (8)

In a structure composed of a molded structure that can be joined and used as a floating structure,
A first molded structure and a second molded structure, each of the first and second molded structures being manufactured by a rotational molding method and having an outer surface having a first zone and a second zone; With respect to the zone and the second zone, in a first arrangement in which the first zone of the first molded structure is opposite to one of the zones of the second molded structure, or the second zone of the first molded structure is A configuration in which a shape is set so that the first molded structure can be joined to the second molded structure in a second arrangement that is opposed to one of the zones of the second molded structure.
The molded structure has a third molded structure having an outer surface with a first zone and a second zone, and for these first zone and second zone, the first zone of the third molded structure is second molded. In a first arrangement that is opposed to one of the zones of the structure, or a second arrangement where the second zone of the third molded structure is opposed to one of the zones of the second molded structure. 2. A structure comprising the molded structure according to claim 1, wherein the shape is set so that the third molded structure can be joined to the second molded structure.
3. The molded structure according to claim 1, wherein the first zone and the second zone of each molded structure are each composed of a flat portion on the outer surface of the molded structure, and the flat portions are arranged at different angles from each other. Construct.
The structure which consists of a shaping | molding structure of any one of Claims 1-3 whose cross section of the said shaping | molding structure is substantially the same.
The said molded structure is the substantially same hexagon, The structure which consists of a molded structure of any one of Claims 1-4.
The configuration comprising the molded structure according to any one of claims 1 to 5, wherein an end surface of at least one molded structure is opposed to an end surface of a fourth molded structure to which the at least one molded structure is joined. body.
The said molded structure consists of molded plastic materials, The structure which consists of a molded structure of any one of Claims 1-6.
  A boat hull / deck structure comprising a structure molded from the molded structure according to any one of claims 1 to 7.

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