Engaging structure of split boat, split boat, and engaging method for split boat

Abstract

To provide a new engaging structure to engage a first hull unit and a second hull unit of a split boat.SOLUTION: An engaging structure for engaging a first hull unit and a second hull unit of a split boat includes at least: a first surface constituting a part of the first hull unit; a second surface constituting a part of the second hull unit; a first hook unit and a fourth hook unit forming a first engaging unit; a second hook unit and a fifth hook unit forming a second engaging unit; and a third hook unit and a sixth hook unit forming a third engaging unit. In addition, the engaging structure is formed with a gap for preventing the hook units from interfering when the first surface and the second surface are moved relatively in a starboard direction or a portside direction.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The disclosure of the present application relates to an engagement structure for engaging a first hull section and a second hull section of a segmented boat, a segmented boat having the engagement structure, and a method for engaging segmented boats. [Background technology]

[0002] A legal amendment in November 2003 eliminated the need for licenses and boat inspections to operate boats under three meters in overall length and equipped with outboard motors under two horsepower. Furthermore, improvements have been made to the materials used in boat manufacturing. For example, the durability of rubber boats has improved, and one-piece or segmented boats made from FRP hulls have become lighter and more compact, leading to an increase in the number of people enjoying marine leisure activities. Demand for segmented boats in particular is growing, as they can be stored in a small space.

[0003] A segable boat is divided into at least two pieces, and the divided hulls must be engaged during use. Figure 1 shows a conventional example of the most basic engagement structure. In the example shown in Figure 1, a roughly L-shaped first engagement element 101 is formed on the outer periphery of the first surface 11 of the first hull section 1 of the segable boat 100, and a second engagement element 201 that engages with the first engagement element 101 is formed on the second surface 21 of the second hull section 2. In the example shown in Figure 1, the second engagement element 201 is inserted into the gap between the first engagement element 101, thereby engaging the first hull section 1 and the second hull section 2 without any gaps.

[0004] However, in the example shown in Figure 1, in order to insert the second engagement element 201 into the gap in the first engagement element 101, it is necessary to lift the second hull section 2 above the first hull section 1, and after inserting the end of the second engagement element 201 into the first engagement element 101, it is necessary to lower the second hull section 2 while maintaining it in a substantially horizontal position. Therefore, the example shown in Figure 1 has the problem that it is difficult for one person to perform the work alone.

[0005] To solve the above problems, the inventors have discovered that by designing the roughly L-shaped first engagement element 101 to be longer than the example shown in Figure 1, as shown in Figure 2, it is possible to engage with the first hull section 1 without having to position the second hull section 2 approximately horizontally; this is now being sold as the OPA series. With the OPA series of separable boats, the first engagement element 101 and the second engagement element 201 can be engaged simply by lifting the second hull section 2's second engagement element 201 side; in other words, the opposite end of the second hull section 2's second engagement element 201 can remain in contact with the ground. This makes it easy for even one person to engage the first hull section 1 and the second hull section 2, improving the convenience of using separable boats. Summary of the Invention [Problem to be solved by the invention]

[0006] However, if a split boat is subjected to large forces such as waves while traveling, the large forces may act on the engagement structure, causing damage. For this reason, as shown in Figure 2, first engagement elements 101 are formed on almost the entire outer periphery of the first surface 11 on the port, starboard, and bottom sides. By increasing the area where the first hull section 1 and the second hull section 2 engage, the strength of the engagement parts of the split boat 100 is improved.

[0007] However, in the example shown in Fig. 2, the first engagement elements 101 are formed almost up to the upper ends of the port and starboard sides. Therefore, in order to insert the ends of the second engagement elements 201 into the first engagement elements 101, it is necessary to lift the lower end of the second engagement element 201 above the upper end of the first engagement element 101. Therefore, although the example shown in Fig. 2 allows one person to engage the segable boat 100, there is still the problem that a large load is required to lift the second hull section 2. For this reason, there is a need to develop an engagement structure different from the engagement structure shown in Fig. 2.

[0008] The present application has been made to solve the above problems. As a result of intensive research, the inventors have newly discovered that (1) by adjusting the opening direction of the hook portion for forming the engagement portion of the engagement structure when arranging the hook portion on the first surface and the second surface, (2) the engagement portion can be formed by relatively moving the first surface and the second surface in the starboard or port direction, and (3) therefore, when lifting the second hull portion, it is sufficient to lift it above the hook portion provided on the bottom side of the first surface, thereby reducing the lifting distance.

[0009] That is, the object of the disclosure of this application is to provide a new engagement structure for engaging the first hull section and second hull section of a segmented boat, a segmented boat having this engagement structure, and a method for engaging segmented boats. [Means for solving the problem]

[0010] The disclosure of the present application relates to an engagement structure for engaging a first hull section and a second hull section of a segmented boat, a segmented boat, and an engagement method for segmented boats, as described below.

[0011] (1) An engagement structure for engaging a first hull section and a second hull section of a separable boat, The engagement structure includes at least a first surface that constitutes a part of the first hull section, a second surface that constitutes a part of the second hull section, a first engagement portion, a second engagement portion, and a third engagement portion, The first surface has: a first hook portion that is an element forming the first engagement portion; a second hook portion that is an element forming the second engagement portion; a third hook portion that is an element forming the third engagement portion; is placed, The second surface has: a fourth hook portion that is an element forming the first engagement portion; a fifth hook portion that is an element forming the second engagement portion; a sixth hook portion that is an element forming the third engagement portion; is placed, The first hook portion and the third hook portion have openings formed in the starboard direction or the port direction, The fourth hook portion and the sixth hook portion have openings formed in the opposite direction to the first hook portion and the third hook portion, The first surface and the second surface are moved relatively in the starboard direction or the port direction to form the first engagement portion and the third engagement portion, One of the second hook portion and the fifth hook portion has an opening formed toward the bottom of the ship, and the other has an opening formed toward the top of the ship, In the case where the hook portion having an opening formed in the shipboard direction is the second hook portion, When the first hook portion and the third hook portion are arranged on the first surface so as to open toward the starboard side, a gap is formed between the hook portion arranged on the starboard side of the first surface and the second hook portion to prevent the fifth hook portion from interfering with the hook portion arranged on the starboard side, When the first hook portion and the third hook portion are arranged on the first surface so as to open toward the port side, a gap is formed between the hook portion arranged on the port side of the first surface and the second hook portion to prevent the fifth hook portion from interfering with the hook portion arranged on the port side, In the case where the hook portion having an opening formed in the shipboard direction is the fifth hook portion, When the fourth hook portion and the sixth hook portion are arranged on the second surface so as to open toward the starboard side, a gap is formed between the hook portion arranged on the starboard side of the second surface and the fifth hook portion to prevent the second hook portion from interfering with the hook portion arranged on the starboard side, When the fourth hook portion and the sixth hook portion are arranged on the second surface so as to open toward the port side, a gap is formed between the hook portion arranged on the port side of the second surface and the fifth hook portion to prevent the second hook portion from interfering with the hook portion arranged on the port side. Engagement structure. (2) When the first surface is viewed from the front, the second hook portion is formed in a substantially V-shape with a central portion lowered toward the bottom of the ship, When the second surface is viewed from the front, the fifth hook portion is formed in a substantially V-shape with a central portion lowered toward the bottom of the ship. The engagement structure described in (1) above. (3) a first convex portion is formed on the first surface, and a second convex portion is formed on the second surface; The first and second protrusions are formed to have sizes such that they substantially abut against each other when the first, second, and third engagement portions are formed. The engagement structure described in (1) above. (4) a first convex portion is formed on the first surface, and a second convex portion is formed on the second surface; The first and second protrusions are formed to have sizes such that they substantially abut against each other when the first, second, and third engagement portions are formed. The engagement structure described in (2) above. (5) In each of the first surface and the second surface, a hole portion is formed for arranging a second fixing member so as to pass through the first surface and the second surface in a state in which the first engaging portion, the second engaging portion, and the third engaging portion are formed. The engagement structure described in (1) above. (6) A first hull portion including the first surface described in any one of (1) to (5) above; A second hull portion including the second surface described in any one of (1) to (5) above; Including, split boat. (7) A method of engaging a split boat, The segmented boat includes the first hull section described in (6) above and the second hull section described in (6) above, The engagement method is a second engagement portion forming step of engaging the second hook portion and the fifth hook portion at a position where the first hook portion and the fourth hook portion, and the third hook portion and the sixth hook portion are in a disengaged state; a first engagement portion and third engagement portion forming step in which, with the second engagement portion formed, the first surface and the second surface are moved relatively in a starboard direction or a port direction, so that the first hook portion and the third hook portion form a first engagement portion, and the fourth hook portion and the sixth hook portion form a third engagement portion; The method of engagement includes: (8) The first surface and the second surface have holes, After the first engaging portion and the third engaging portion forming step, and a fixing step of fixing the first surface and the second surface by arranging a second fixing member so as to pass through the hole. The engagement method according to (7) above. [Effects of the Invention]

[0012] The engagement structure disclosed in this application allows for starboard and port side engagement by sliding the first surface of the first hull section and the second surface of the second hull section laterally. Therefore, when engaging the first and second hull sections, it is only necessary to lift the hull sections above the hook section on the bottom of the vessel, improving the convenience of the engagement work. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a top view showing an outline of an engagement structure of a conventional divided boat. [Figure 2] Figure 2 is a photograph used in place of a drawing, showing an outline of the engagement structure of a conventional split boat. [Figure 3] FIG. 3 is a schematic top view of the segmented boat 100 according to the first embodiment. [Figure 4] FIG. 4 is a perspective view for explaining the outline of the structure of the first surface 21 and the second surface 22 that constitute the engagement structure of the segmented boat 100 according to the first embodiment. [Figure 5] FIG. 5 is a schematic top view of a segmented boat 100a according to the second embodiment. [Figure 6]FIG. 6 is a schematic top view for explaining the method of engaging the segmented boats according to the embodiment, and is an enlarged view of only the engaging structure portion of the segmented boat 100. [Figure 7] Figure 7 is a photograph used in place of a drawing, showing the "first engaging structure part" and "second engaging structure part" that were fabricated. [Figure 8] 8A to 8C are photographs substituted for drawings, which are photographs of the engagement method carried out using the "engagement structure first part" and "engagement structure second part" that were fabricated. DETAILED DESCRIPTION OF THE INVENTION

[0014] The engagement structure, the segmented boats, and the segmented boat engagement method will be described in detail below with reference to the drawings. Note that, in this specification, components having similar functions are designated by the same or similar reference numerals. Repetitive descriptions of components designated by the same or similar reference numerals may be omitted.

[0015] Furthermore, for ease of understanding, the position, size, range, etc. of each component shown in the drawings may not represent the actual position, size, range, etc. Therefore, the disclosure in this application is not necessarily limited to the position, size, range, etc. disclosed in the drawings.

[0016] (Direction definition) In this specification, when the seg- ment boat is assembled, the right side as viewed from the stern toward the bow is defined as the starboard direction, the left side as the port direction, and the direction opposite to the bottom direction is defined as the onboard direction. The above definitions of directions are also used when the hull sections that make up the seg- ment boat are disengaged.

[0017] (Split boat embodiment) An embodiment of the divided boat will be described with reference to Fig. 3. Fig. 3 is a schematic top view of the divided boat.

[0018] The segmented boat 100 according to the embodiment includes a first hull section 1 and a second hull section 2. In the example shown in FIG. 3, the first hull section 1 is on the bow side and the second hull section 2 is on the stern side. Alternatively, the first hull section 1 may be on the stern side and the second hull section 2 on the bow side. The first hull section 1 and the second hull section may be formed from materials known in the field of segmented boats. Examples of materials include, but are not limited to, metals such as aluminum, fiber-reinforced plastic (FRP), and the like. The segmented boat 100 according to the embodiment includes any of the engagement structures described below.

[0019] (First embodiment of engagement structure) An outline of the engagement structure 10 according to the first embodiment will be described with reference to FIGS. 3 and 4. FIG. 4 is a perspective view illustrating the outline of the structure of the first surface 21 and second surface 22 that constitute the engagement structure of the segmented boat 100 according to the first embodiment. The engagement structure 10 according to the first embodiment is an engagement structure 10 for engaging the first hull section 1 and the second hull section 2 of the segmented boat 100. The engagement structure 10 includes at least a first surface 11 that constitutes a part of the first hull section 1, a second surface 21 that constitutes a part of the second hull section 2, a first engagement section 3, a second engagement section 4, and a third engagement section 5. In the example shown in FIGS. 3 and 4, the first engagement section 3 forms the engagement structure on the port side of the segmented boat 100, the second engagement section 4 forms the engagement structure on the bottom side of the segmented boat 100, and the third engagement section 5 forms the engagement structure on the starboard side of the segmented boat 100. In the example shown in Fig. 3, the first convex portion 12 is formed on the first surface 11 and the second convex portion 22 is formed on the second surface 21, but the first convex portion 12 and the second convex portion 22 are optional components in the engagement structure 10 according to the first embodiment. Also, while Fig. 4 shows the second engagement portions 4 (4a and 4b), to avoid complicating the drawing, the second engagement portions 4 (4a and 4b) are omitted from Fig. 3, which shows the split boat 100 as viewed from above. For the same reason, the second engagement portions 4 are also omitted from Figs. 5 and 6, which will be described later.

[0020] The first surface 11 is provided with a first hook portion 3a, which is an element forming the first engagement portion 3, a second hook portion 4a, which is an element forming the second engagement portion 4, and a third hook portion 5a, which is an element forming the third engagement portion 5.

[0021] The second surface 21 is provided with a fourth hook portion 3b, which is an element forming the first engagement portion 3, a fifth hook portion 4b, which is an element forming the second engagement portion 4, and a sixth hook portion 5b, which is an element forming the third engagement portion 5.

[0022] In the example shown in Figures 3 and 4, the first hook portion 3a and the third hook portion 5a have openings formed in the starboard direction. Furthermore, the fourth hook portion 3b and the sixth hook portion 5b have openings formed in the opposite direction (port direction) from the first hook portion 3a and the third hook portion 5a. Therefore, in the example shown in Figures 3 and 4, assuming that only the second surface 21 is moved, by locating the second surface 21 in the starboard direction relative to the first surface 11 and moving the second surface 21 in the port direction, the first hook portion 3a and the fourth hook portion 3b engage with each other to form the first engagement portion 3, and the third hook portion 5a and the sixth hook portion 5b engage with each other to form the third engagement portion 5.

[0023] In the example shown in FIGS. 3 and 4, the first hook portion 3a and the third hook portion 5a have openings facing starboard. Alternatively, the first hook portion 3a and the third hook portion 5a may have openings facing port, and the fourth hook portion 3b and the sixth hook portion 5b may have openings facing starboard. In other words, the openings of the first hook portion 3a and the third hook portion 5a formed on the first surface 11 may be arranged so that they face the same direction (port or starboard), and the openings of the fourth hook portion 3b and the sixth hook portion 5b formed on the second surface 21 may be arranged so that they face the same direction but are opposite to the first hook portion 3a and the third hook portion 5a. The first engaging portion 3 and the third engaging portion 5 may be formed by moving the first surface 11 and the second surface 21 relatively in the starboard or port direction. In this specification, "the first surface 11 and the second surface 21 are moved relative to each other in the starboard or port direction" means any of the following: (1) an embodiment in which the first surface 11 does not move and only the second surface 21 moves in the starboard or port direction relative to the first surface 11; (2) an embodiment in which the second surface 21 does not move and only the first surface 11 moves in the starboard or port direction relative to the second surface 21; (3) an embodiment in which the first surface 11 moves in the starboard direction and the second surface 21 moves in the port direction; or (4) an embodiment in which the first surface 11 moves in the port direction and the second surface 21 moves in the starboard direction.

[0024] In the example shown in Figures 3 and 4, the second hook portion 4a has an opening facing upward (see the cross-sectional view taken along the arrow xx in Figure 4), and the fifth hook portion 4b has an opening facing the opposite direction (toward the bottom of the ship) from the second hook portion 4a (see the cross-sectional view taken along the arrow yy in Figure 4). Therefore, in the example shown in Figures 3 and 4, the second engagement portion 4 is formed by lifting the second surface 21 of the second hull portion 2 above the second hook portion 4a and engaging the second hook portion 4a with the fifth hook portion 4b. Alternatively, the second hook portion 4a may have an opening facing downward toward the bottom of the ship, and the fifth hook portion 4b may have an opening facing the opposite direction (toward the top of the ship) from the second hook portion 4a. The second engagement portion 4 can be formed by placing the hull portion with the hook portion with an opening facing upward on the ground, lifting the hull portion with the hook portion with an opening facing the bottom of the ship, and then lowering the lifted hull portion with the second hook portion 4a and the fifth hook portion 4b engaged. 4, the second hook portion 4a and the fifth hook portion 4b are depicted as being substantially V-shaped to match the shape of the bottom of the vessel, but forming the second hook portion 4a and the fifth hook portion 4b in a substantially V-shape is optional in the engagement structure 10 according to the first embodiment. The second hook portion 4a and the fifth hook portion 4b may also be linear.

[0025] In the example shown in FIG. 4, the first hook portion 3a and the third hook portion 5a open to the starboard side. Therefore, when forming the engagement structure 10, the second surface 21 is positioned starboard relative to the first surface 11, and the second hook portion 4a and the fifth hook portion 4b are engaged. By moving the second surface 21 to the port side and / or the first surface 11 to the starboard side, the first surface 11 and the second surface 21 are engaged. In the example shown in FIG. 4, assume that when the second surface 21 is positioned starboard relative to the first surface 11, no gap S2 is formed between the second hook portion 4a and the third hook portion 5a. In this case, when the second surface 21 is lifted in the shipboard direction and the fifth hook portion 4b is engaged with the second hook portion 4a, the fifth hook portion 4b positioned on the second surface 21 abuts against the third hook portion 5a. 4, a gap S2 is formed between the hook portion (third hook portion 5a) located on the starboard side of the first surface 11 and the second hook portion 4a to prevent the fifth hook portion 4b from interfering with the third hook portion 5a. The formation of the gap S2 prevents the fifth hook portion 4b from interfering with the third hook portion 5a during the engagement operation between the second hook portion 4a and the fifth hook portion 4b and when the second surface 21 is moved toward the port side and / or the first surface 11 is moved toward the starboard side.

[0026] Although not shown in the figure, when the first hook portion 3a and the third hook portion 5a are arranged on the first surface 11 so that they open toward the port side, a gap S2 is formed between the hook portion (first hook portion 3a) arranged on the port side of the first surface 11 and the second hook portion 4a.

[0027] Although not shown in the figures, it is assumed that the hook portion having an opening formed in the shipboard direction is the fifth hook portion 4b arranged on the second surface 21. In this case, if the fourth hook portion 3b and the sixth hook portion 5b are arranged on the second surface 21 so as to open in the starboard direction, it is sufficient that a gap S2 is formed between the hook portion arranged on the starboard side of the second surface 21 (the sixth hook portion 5b) and the fifth hook portion 4b. Furthermore, if the fourth hook portion 3b and the sixth hook portion 5b are arranged on the second surface 21 so as to open in the port direction, it is sufficient that a gap S2 is formed between the hook portion arranged on the port side of the second surface 21 (the fourth hook portion 3b) and the fifth hook portion 4b.

[0028] The size of the gap S2 is not particularly limited as long as the second hook portion 4a or the fifth hook portion 4b does not interfere with other hook portions when forming the second engagement portion 4. It may be designed appropriately while taking into consideration the size of the second hook portion 4a and the fifth hook portion 4b from the ship's top to the ship's bottom (hereinafter referred to as the "Z direction"). For example, in the example shown in FIG. 4, the gap S2 (the distance between the end of the second hook portion 4a and the end of the third hook portion 5a) may be equal to or greater than the size of the fifth hook portion 4b in the Z direction, although this is not a limitation.

[0029] Alternatively, the size of the gap S2 may be shorter than the size of the fifth hook portion 4b in the Z direction. In the example shown in FIG. 4 , after the second hook portion 4a and the fifth hook portion 4b are engaged, a portion of the fifth hook portion 4b is inserted into the second hook portion 4a, so the size of the second engagement portion 4 in the Z direction is shorter than the sum of the Z direction sizes of the second hook portion 4a and the fifth hook portion 4b. When the fifth hook portion 4b is engaged with the second hook portion 4a, only the second surface 21 side of the second hull portion 2 is lifted, so the fifth hook portion 4b is inserted obliquely into the second hook portion 4a. In this case, the approximately U-shaped end of the fifth hook portion 4b only needs to clear the approximately U-shaped end of the second hook portion 4a obliquely, so the size of the gap S2 may be shorter than the Z direction size of the fifth hook portion 4b.

[0030] Although not shown in the drawings, the ends of the second hook portion 4a and the third hook portion 5a may be formed to have an R-shape if necessary. In addition, to make it easier to insert the fifth hook portion 4b into the second hook portion 4a, the lower end side of the third hook portion 5a, on the second surface 21 side, may be formed with an inclined surface that approaches the first surface 11 as it moves from the direction above the ship toward the bottom of the ship.

[0031] The above explanation is an example in which gap S2 is formed on the starboard side of first surface 11 in Fig. 4. Even if gap S2 is formed on the port side of first surface 11 or on the starboard or port side of second surface 21, gap S2 may be formed in the same manner as described above.

[0032] There are no particular limitations on the shapes of the first hook portion 3a and the fourth hook portion 3b, as long as the first hook portion 3a and the fourth hook portion 3b can move relative to each other to form the first engaging portion 3. Examples of shapes include, but are not limited to, a roughly U-shape as shown in FIG. 4 or a roughly C-shape.

[0033] Furthermore, if the first hook portion 3a and the fourth hook portion 3b are too small, the engagement strength will not be sufficient, and if they are too large, the distance they must move relative to each other between the first surface 11 and the second surface 21 will be too long. While not limited thereto, the length of the first hook portion 3a and the fourth hook portion 4b (L1 shown in the enlarged view of FIG. 4; the depth into which the mating hook portion can be inserted) is, for example, approximately 30 mm to 60 mm. In the example shown in FIG. 4, the first hook portion 3a and the fourth hook portion 3b are formed over almost the entire port side of the first surface 11 and the second surface 21, but they may also be formed on only a portion of the port side. In the example shown in FIG. 4, the first hook portion 3a and the fourth hook portion 3b are each formed from a single member. Alternatively, the first hook portion 3a and the fourth hook portion 3b may be formed from multiple members spaced apart from each other.

[0034] Furthermore, the thicker the first hook portion 3a and the fourth hook portion 4b (W shown in the enlarged view of FIG. 4; the same applies to other hook portions, not shown), the larger the gap between the first surface 11 and the second surface 21 when the first engagement portion 3 is formed, and the thinner the thickness, the weaker the engagement strength. Although not limited, the thickness of the first hook portion 3a and the fourth hook portion 3b can be approximately 5 mm to 13 mm.

[0035] There are no particular limitations on the first hook portion 3a and the fourth hook portion 3b as long as they can be firmly fixed to the first surface 11. In the example shown in FIG. 4, the first hook portion 3a and the fourth hook portion 3b are fixed by a first fixing member 6 that penetrates through the first hook portion 3a and the first surface 11. There are no particular limitations on the first fixing member 6 as long as it can firmly fix the first hook portion 3a and the first surface 11, and examples of the first fixing member 6 include bolts and nuts. Alternatively or additionally, the first hook portion 3a and the first surface 11 may be fixed with an adhesive. The fourth hook portion 3b may also be fixed to the first surface 11 in the same manner as the first hook portion 3a.

[0036] Although detailed description will be omitted, the second hook portion 4a and the fifth hook portion 4b, as well as the third hook portion 5a and the sixth hook portion 5b, may be disposed on the first surface 11 and the second surface 21, similar to the first hook portion 3a and the fourth hook portion 3b. The second hook portion 4a and the fifth hook portion 4b, as well as the third hook portion 5a and the sixth hook portion 5b, may be the same as the first hook portion 3a and the fourth hook portion 3b, or may be partially different. For example, the length L of the second hook portion 4a and the fifth hook portion 4b may be different from the length of the other hook portions.

[0037] In the example shown in Figure 4, the first hook portion 3a, second hook portion 4a, and third hook portion 5a, which are separately fabricated, are arranged on the first surface 11 of the first hull portion 1, and the fourth hook portion 3b, fifth hook portion 4b, and sixth hook portion 5b, which are separately fabricated, are arranged on the second surface 21 of the second hull portion 2. Alternatively, the first hook portion 3a, second hook portion 4a, and third hook portion 5a may be integrally formed on the first surface 11 of the first hull portion 1, and the fourth hook portion 3b, fifth hook portion 4b, and sixth hook portion 5b may be integrally formed on the second surface 21 of the second hull portion 2. As a further alternative, the first hook portion 3a, second hook portion 4a, and third hook portion 5a may be integrally fabricated and arranged on the first surface 11, and the fourth hook portion 3b, fifth hook portion 4b, and sixth hook portion 5b may be integrally fabricated and arranged on the second surface 21. 4, when the first hook portion 3a, the second hook portion 4a, and the third hook portion 5a are integrally formed, the surface fixed to the first surface 11 is integrally formed, but a notch may be formed in the portion corresponding to the gap S2. Similarly, when the gap S2 is formed on the second surface 21 side, a notch may be formed in the portion corresponding to the gap S2.

[0038] Alternatively, the first surface 11 may be separate from the first hull section 1, and the second surface 21 may be separate from the second hull section 2. When the first surface 11 is separate from the first hull section 1 and the second surface 21 is separate from the second hull section 2, it is possible to provide, for example, only the first surface 11 on which the first hook section 3a, the second hook section 4a, and the third hook section 5a are arranged (hereinafter, sometimes referred to as the "hook-arranged first surface") and the second surface 21 on which the fourth hook section 3b, the fifth hook section 4b, and the sixth hook section 5b are arranged (hereinafter, sometimes referred to as the "hook-arranged second surface"). Then, by fixing the separately provided hook-arranged first surface to the existing first hull section using fasteners, adhesive, etc., and fixing the hook-arranged second surface to the existing second hull section 2 using fasteners, adhesive, etc., an existing segmented boat can be modified into the segmented boat 100 according to this embodiment.

[0039] Alternatively, the split boat 100 according to the embodiment may be produced by fabricating the first hull section 1 to include as a part a first surface with hooks arranged thereon that is provided separately, and fabricating the second hull section 2 to include as a part a second surface with hooks arranged thereon that is provided separately.

[0040] Furthermore, while Figure 3 shows an example in which the optional first and second protrusions 12 and 22 are formed, we will assume that the first and second protrusions 12 and 22 are not formed. In this case, after the first hull section 1 and the second hull section 2 are engaged, a space corresponding to the thickness of the first engagement section 3, second engagement section 4, and third engagement section 5 exists between the first surface 11 and the second surface 21. An optional joint plate can be inserted into this space as needed. When a space exists between the first surface 11 and the second surface 21, load transmission between the first hull section 1 and the second hull section 2 is limited to the first engagement section 3, second engagement section 4, and third engagement section 5.

[0041] On the other hand, when the joint plate is inserted so that it contacts the first surface 11 and the second surface 21, the load is transmitted between the first hull section 1 and the second hull section 2 also via the joint plate. Therefore, the load on the first engagement section 3, the second engagement section 4, and the third engagement section 5 can be reduced.

[0042] The engagement structure 10 according to the first embodiment and the divided boat 100 including the engagement structure 10 have the following advantages.

[0043] (1) The engagement structure 10 disclosed in this application can perform starboard-side engagement and port-side engagement by sliding the first surface 11 of the first hull section 1 and the second surface 21 of the second hull section 2 laterally (toward port or starboard) while the second hook section 4a and the fifth hook section 4b are engaged. Therefore, when engaging the first hull section 1 and the second hull section 2, engagement in the direction of gravity can be achieved simply by lifting one of the hull sections above the second hook section 4a or the fifth hook section 4b on the bottom side of the ship, improving the convenience of the engagement operation.

[0044] Next, an optional additional configuration example that can be adopted by the engagement structure 10 (divided boat 100) according to the first embodiment will be described. (Regarding the substantially V-shaped second hook portion 4a and fifth hook portion 4b) As shown in Figure 4, when the first surface 11 is viewed from the front, the second hook portion 4a is formed in an approximately V-shape with the central portion dipping toward the bottom of the ship, and when the second surface 21 is viewed from the front, the fifth hook portion may be formed in an approximately V-shape with the central portion dipping toward the bottom of the ship.

[0045] When the second hook portion 4a is formed in a substantially V-shape, the second hook portion 4a may be formed of a single substantially V-shaped member or may be formed by combining two or more members. Similarly, the fifth hook portion 4b may be formed of a single member or may be formed by combining two or more members.

[0046] The second hook portion 4a and the fifth hook portion 4b according to the optional additional configuration example are similar to the second hook portion 4a and the fifth hook portion 4b described in the engagement structure 10 of the first embodiment, except that they are substantially V-shaped. Therefore, other explanations will be omitted to avoid redundancy.

[0047] When the second hook portion 4a and the fifth hook portion 4b are formed in an approximately V-shape, in addition to the effects achieved by the engagement structure 10 according to the first embodiment and the divided boat 100 including the engagement structure 10, the following effects are achieved. (1) As will be explained in detail in the engagement method described below, when engaging the first hull section 1 and the second hull section 2, the second hook section 4a and the fifth hook section 4b must be engaged in a position where the first hook section 3a and the fourth hook section 3b, and the third hook section 5a and the sixth hook section 5b are disengaged. In other words, the engagement must be performed with the center of the approximate V-shape (the part closest to the bottom of the ship) shifted. Therefore, when the second hook section 4a and the fifth hook section 4b are engaged and the first surface 11 or the second surface 21 is moved toward the starboard or port side, the first surface 11 or the second surface 21 moves toward the approximate center of the V-shape from the point where the second hook section 4a and the fifth hook section 4b are engaged, that is, in the direction of gravity as well as the lateral direction. This has the effect of enabling the second hook portion 4a or the fifth hook portion 4b to be moved with less force than if they were formed in a generally straight line. In other words, the generally V-shaped second hook portion 4a and the fifth hook portion 4b synergistically perform two different functions: an engagement function and a guide function that reduces the load when engaging the first hull portion 1 and the second hull portion 2.

[0048] (First protrusion 12 and second protrusion 22) 3, a first protrusion 12 may be formed on the first surface 11, and a second protrusion 22 may be formed on the second surface 21. The first protrusion 12 and the second protrusion 22 are formed to have a size that allows them to substantially abut when the first engagement portion 3, the second engagement portion 4, and the third engagement portion 5 are formed. The protrusion length L2 of the first protrusion 12 from the first surface 11 and the protrusion length L3 of the second protrusion 22 from the second surface 21 may be the same or different.

[0049] The first protrusion 12 is formed in a location on the first surface 11 other than where the first hook portion 3a, the second hook portion 4a, and the third hook portion 5a are located. There are no particular restrictions on the proportion of the first protrusion 12 to the first surface 11 or its shape. From the perspective of distributing the load on the first hull portion 1 and the second hull portion to areas other than the engagement area, a larger area of ​​the first protrusion 12 is preferable. The second protrusion 22 is formed in a location on the second surface 21 other than where the fourth hook portion 3b, the fifth hook portion 4b, and the sixth hook portion 5b are located. There are no particular restrictions on the proportion of the second protrusion 22 to the second surface 21 or its shape. From the perspective of distributing the load on the first hull portion 1 and the second hull portion to areas other than the engagement area, a larger area of ​​the second protrusion 22 is preferable. Furthermore, from the perspective of load distribution, a larger contact area between the first protrusion 12 and the second protrusion 22 is also preferable.

[0050] As shown in FIG. 6A (described later), when the engagement method is performed, the second engagement portion forming step is performed at a position where the first hook portion 3a, the fourth hook portion 3b, and the third hook portion 5a, the sixth hook portion 5b are disengaged. If the first protrusion 12 is formed close to the first hook portion 3a, the second hook portion 4a, and the third hook portion 5a on the first surface 11, there is a risk that any of the fourth hook portion 3b, the fifth hook portion 4b, and the sixth hook portion 5b will interfere with the first protrusion 12. Therefore, when the first protrusion 12 is formed on the first surface 11, the size of the first protrusion 12 should be designed so that a space S1 large enough to prevent the fourth hook portion 3b, the fifth hook portion 4b, and the sixth hook portion 5b from interfering with the first protrusion 12 is formed during the second engagement portion forming step. Similarly, when forming the second convex portion 22 on the second surface 21, the size of the second convex portion 22 can be designed so that a space S1 of a size that prevents the first hook portion 3a, the second hook portion 4a, and the third hook portion 5a from interfering with the second convex portion 22 is formed when the second engagement portion forming process is carried out.

[0051] 3, the first protrusion 12 may have an inclined surface that slopes toward the first hook portion 3a and the third hook portion 5a. Although not shown in FIG. 3, the first protrusion 12 may have an inclined surface that slopes toward the second hook portion 4a. Similarly, the second protrusion 22 may have an inclined surface that slopes toward the fourth hook portion 3b, the fifth hook portion 4b, and the sixth hook portion 5b. When an inclined surface is formed, when the hook portion of either the first surface 11 or the second surface 21 faces the protrusion at a position where it would interfere with the protrusion, the inclined surface functions to guide the hook portion, thereby providing the effect of guiding the hook portion to a non-interfering position.

[0052] The first protrusion 12 and the second protrusion 22 may be formed separately and fixed to the first surface 11 and the second surface 21, respectively, with a fixing member and / or adhesive. Alternatively, the first protrusion 12 may be formed integrally with the first surface 11, and the second protrusion 22 may be formed integrally with the second surface 21. There are no particular restrictions on the material that constitutes the first protrusion 12 and the second protrusion 22, and examples include, but are not limited to, metals such as aluminum, fiber reinforced plastic (FRP), etc.

[0053] When a first convex portion 12 is formed on the first surface 11 and a second convex portion 22 is formed on the second surface 21, in addition to the effects achieved by the engagement structure 10 according to the first embodiment and the split boat 100 including the engagement structure 10, the following effects are achieved. (1) In the conventional OPA series, after the first hull section 1 and the second hull section 2 were engaged, it was necessary to insert a joint plate to fill the gap between the first surface 11 and the second surface 21. On the other hand, when the first convex section 12 and the second convex section 22 are provided, the first convex section 12 and the second convex section 22 automatically come into contact after the first hull section 1 and the second hull section 2 are engaged. Therefore, the joint plate that was previously required is no longer necessary, reducing the number of parts and improving the convenience of manufacturing and storage.

[0054] The engagement structure 10 and optional additional configuration examples according to the first embodiment described above are merely examples of the engagement structure 10 and are not limited to the described examples. Other configurations may be added or deleted within the scope of the technical concept disclosed in this application. Furthermore, any combination of the engagement structure 10 according to the first embodiment and the optional additional configuration examples may be used. For the purpose of describing the segmented boat 100a according to the second embodiment described below, the engagement structure portion on the first surface 11 side of the engagement structure 10 obtained by combining the engagement structure 10 according to the first embodiment and the optional additional configuration examples described above may be referred to as the "engagement structure first portion" and the engagement structure portion on the second surface 21 side may be referred to as the "engagement structure second portion."

[0055] (Second embodiment of the divided boat 100) A segmented boat 100a according to the second embodiment will be described with reference to Fig. 5. Fig. 5 is a schematic top view of the segmented boat 100a according to the second embodiment. The segmented boat 100a according to the second embodiment differs from the segmented boat 100 according to the first embodiment in that it is segmented into n parts. In the example shown in Fig. 5, n = 3. n may be any integer equal to or greater than 3, and may be, for example, 4, 5, or 6.

[0056] The example shown in Figure 5 differs from the separable boat 100 according to the first embodiment in that a third hull section 7 is disposed between the first hull section 1 and the second hull section 2. The first hull section 1 and the second hull section 2 are the same as those in the separable boat 100 according to the first embodiment. Therefore, detailed descriptions of the first hull section 1 and the second hull section 2 will be omitted to avoid redundancy.

[0057] As shown in Figure 5, the third hull section 7 has a third surface 71 facing the first surface 11 of the first hull section 1 and a fourth surface 72 facing the second surface 21 of the second hull section 2. The engagement structure formed on the third surface 71 is the same as the second engagement structure part described above. Furthermore, the engagement structure formed on the fourth surface 72 is the same as the first engagement structure part described above. Therefore, to avoid redundancy, detailed descriptions of the first and second engagement structure parts will be omitted.

[0058] Although not shown, when the hull is divided into three or more sections, the first engagement structure portion may be formed on one of the opposing surfaces of the divided hull sections, and the second engagement structure portion may be formed on the other surface. In the example shown in FIG. 5, the second engagement structure portion is formed on the third surface 71, and the first engagement structure portion is formed on the fourth surface 72. Alternatively, although not shown, the second engagement structure portion may be formed on the third surface 71, the second engagement structure portion may also be formed on the fourth surface 72, and the first engagement structure portion may be formed on the second surface 21. However, in the example shown in FIG. 5, it is also possible to use only the first hull section 1 and the second hull section 2 without using the third hull section 7. Therefore, it is desirable that the first engagement structure portion is formed on the first hull section 1, the second engagement structure portion is formed on the second hull section 2, and the second engagement structure portion be formed on one surface of the third hull section 7 and the first engagement structure portion be formed on the other surface.

[0059] Furthermore, although not shown, when n is an integer greater than or equal to 4, it is sufficient to prepare multiple third hull sections 7 (with the first engagement structure part formed on one surface and the second engagement structure part formed on the other surface) as shown in Figure 5. Alternatively, other combinations of engagement structures may be used for the third hull section 7 and the fourth hull section, as long as the first engagement structure part is formed on one opposing surface of the divided hull sections and the second engagement structure part is formed on the other surface.

[0060] (Embodiment of Engagement Method of Split Boats) Next, a method for engaging the segmented boats according to the embodiment will be described with reference to Fig. 6. Fig. 6 is a schematic top view of the segmented boat 100, showing only the engaging structure portion enlarged.

[0061] The engagement method according to the embodiment is carried out using a segmented boat 100 having a first hull section 1 having an engagement structure first portion of the engagement structure of any of the above-mentioned embodiments, and a second hull section 2 having an engagement structure second portion of the engagement structure of any of the above-mentioned embodiments. (ST1) a second engagement portion forming step of engaging the second hook portion 4a and the fifth hook portion 4b at a position where the first hook portion 3a and the fourth hook portion 3b, and the third hook portion 5a and the sixth hook portion 5b are in a disengaged state (see FIG. 6a); (ST2) a first engagement portion and third engagement portion forming step in which, with the second engagement portion 4 formed, the first surface 11 and the second surface 21 are moved relatively in the starboard direction or the port direction, so that the first hook portion 3a and the fourth hook portion 3b form the first engagement portion 3, and the fourth hook portion 5a and the sixth hook portion 5b form the third engagement portion 5 (see FIG. 6b); Includes:

[0062] The engagement method according to the embodiment includes the novel steps (ST1) and (ST2) described above. After performing (ST2), the engagement method includes: (ST3) a fixing step in which the first surface 11 and the second surface 21 have holes, and the second fixing member 8 is arranged so as to pass through the holes, thereby fixing the first surface 11 and the second surface 21; may be further carried out.

[0063] Although not shown in the figures, when the divided boat 100 includes a first convex portion 12 and a second convex portion 22, the second fixing member 8 may be fixed so as to penetrate the first convex portion 12 and the second convex portion 22 as well, or may be fixed so as to penetrate only the first surface 11 and the second surface 21 without penetrating the first convex portion 12 and the second convex portion 22.

[0064] Furthermore, although not shown, if the segmented boat 100 does not include the first convex portion 12 and the second convex portion 22, a joint plate insertion step of inserting a joint plate between the first surface 11 and the second surface 21 may be optionally performed between the above steps (ST2) and (ST3). The second fixing members 8 may be fixed so as to penetrate the joint plate, or they may be fixed so as to penetrate only the first surface 11 and the second surface 21 without penetrating the joint plate. Furthermore, although not shown, the second fixing members 8 may be formed of a substantially U-shaped member, and the onboard ends of the first surface 11 and the second surface 21 may be inserted into the openings of the substantially U-shaped member to fix the first surface 11 and the second surface 21.

[0065] The method for engaging the segmented boats 100 according to the embodiment has the following advantages. (1) When engaging the first hull section 1 and the second hull section, engagement in the direction of gravity can be achieved by simply lifting one of the hull sections above the second or fifth hook section on the bottom side of the vessel. Furthermore, since the second and fifth hook sections are located on the bottom side of the vessel, they are located closer to the bottom side of the vessel than the onboard ends of the first, third, fourth, and sixth hook sections. Therefore, unlike the conventional OPA series, when lifting the hull section upward, the lifting distance of the hull section to be lifted upward can be shortened, improving the convenience of the engagement operation.

[0066] Figure 7 shows photographs of the "engagement structure first part" and "engagement structure second part" that were actually fabricated. The pointed part is the gap S2.

[0067] FIG. 8 shows photographs of the engagement method performed using the fabricated "engagement structure first portion" and "engagement structure second portion." FIG. 8A is a photograph of the second engagement portion forming step (ST1) being performed. The area surrounded by the dotted circle in FIG. 8A is the area where the gap S2 is formed. It was confirmed that the formation of the gap S2 allows the second engagement portion 4 to be formed without the fifth hook portion 4b interfering with the third hook portion 5a. It was also confirmed that the first engagement portion and the third engagement portion can be formed by moving the second surface (the lower side of the photograph) to the left of the photograph, as shown in FIGS. 8B and 8C. [Industrial Applicability]

[0068] The split boat including the engagement structure disclosed in the present application is more convenient to engage than conventional split boats, and is therefore useful for the small watercraft industry. [Explanation of symbols]

[0069] 1...first hull portion, 11...first surface, 12...first convex portion, 2...second hull portion, 21...second surface, 22...second convex portion, 3...first engagement portion, 3a...first hook portion, 3b...fourth hook portion, 4...second engagement portion, 4a...second hook portion, 4b...fifth hook portion, 5...third engagement portion, 5a...third hook portion, 5b...sixth hook portion, 6...first fixing member, 7...Third hull section, 71...Third surface, 72...Fourth surface, 8...second fixing member, 10...Engagement structure, 100, 100a... Split boat, 101...first engaging element, 201...second engaging element, L1: Depth into which the mating hook portion can be inserted; L2: Length of protrusion of the first protrusion 12 from the first surface 11; L3: Length of protrusion of the second protrusion 22 from the second surface 21; S1...space, S2...gap W: Thickness of the hook

Claims

1. An engagement structure for engaging a first hull section and a second hull section of a segmented boat, The engagement structure includes at least a first surface that constitutes a part of the first hull section, a second surface that constitutes a part of the second hull section, a first engagement portion, a second engagement portion, and a third engagement portion, The first surface has: a first hook portion that is an element forming the first engagement portion; a second hook portion that is an element forming the second engagement portion; a third hook portion that is an element forming the third engagement portion; is placed, The second surface has: a fourth hook portion that is an element forming the first engagement portion; a fifth hook portion that is an element forming the second engagement portion; a sixth hook portion that is an element forming the third engagement portion; is placed, The first hook portion and the third hook portion have openings formed in the starboard direction or the port direction, The fourth hook portion and the sixth hook portion have openings formed in the opposite direction to the first hook portion and the third hook portion, The first surface and the second surface are moved relatively in a starboard direction or a port direction to form the first engagement portion and the third engagement portion, One of the second hook portion and the fifth hook portion has an opening formed toward the bottom of the ship, and the other has an opening formed toward the top of the ship, In the case where the hook portion having an opening formed in the shipboard direction is the second hook portion, When the first hook portion and the third hook portion are arranged on the first surface so as to open toward the starboard side, a gap is formed between the hook portion arranged on the starboard side of the first surface and the second hook portion to prevent the fifth hook portion from interfering with the hook portion arranged on the starboard side, When the first hook portion and the third hook portion are arranged on the first surface so as to open toward the port side, a gap is formed between the hook portion arranged on the port side of the first surface and the second hook portion to prevent the fifth hook portion from interfering with the hook portion arranged on the port side, In the case where the hook portion having an opening formed in the shipboard direction is the fifth hook portion, When the fourth hook portion and the sixth hook portion are arranged on the second surface so as to open toward the starboard side, a gap is formed between the hook portion arranged on the starboard side of the second surface and the fifth hook portion to prevent the second hook portion from interfering with the hook portion arranged on the starboard side, When the fourth hook portion and the sixth hook portion are arranged on the second surface so as to open toward the port side, a gap is formed between the hook portion arranged on the port side of the second surface and the fifth hook portion to prevent the second hook portion from interfering with the hook portion arranged on the port side. Engagement structure.

2. When the first surface is viewed from the front, the second hook portion is formed in a substantially V-shape with a central portion lowered toward the bottom of the ship, When the second surface is viewed from the front, the fifth hook portion is formed in a substantially V-shape with a central portion lowered toward the bottom of the ship. The engagement structure according to claim 1 .

3. a first convex portion is formed on the first surface, and a second convex portion is formed on the second surface; The first and second protrusions are formed to have sizes such that they substantially abut against each other when the first, second, and third engagement portions are formed. The engagement structure according to claim 1 .

4. a first convex portion is formed on the first surface, and a second convex portion is formed on the second surface; The first and second protrusions are formed to have sizes such that they substantially abut against each other when the first, second, and third engagement portions are formed. The engagement structure according to claim 2 .

5. Each of the first surface and the second surface is formed with a hole portion for arranging a second fixing member so as to pass through the first surface and the second surface in a state in which the first engaging portion, the second engaging portion, and the third engaging portion are formed. The engagement structure according to claim 1 .

6. a first hull portion including the first surface according to any one of claims 1 to 5; a second hull portion including the second surface according to any one of claims 1 to 5; Including, split boat.

7. A method of engaging a split boat, comprising: The segmented boat includes a first hull section as recited in claim 6 and a second hull section as recited in claim 6, The engagement method is a second engagement portion forming step of engaging the second hook portion and the fifth hook portion at a position where the first hook portion and the fourth hook portion, and the third hook portion and the sixth hook portion are in a disengaged state; a first engagement portion and third engagement portion forming step in which, with the second engagement portion formed, the first surface and the second surface are moved relatively in a starboard direction or a port direction, so that the first hook portion and the third hook portion form a first engagement portion, and the fourth hook portion and the sixth hook portion form a third engagement portion; The method of engagement includes:

8. the first surface and the second surface have holes; After the first engaging portion and the third engaging portion forming step, a fixing step of fixing the first surface and the second surface by arranging a second fixing member so as to pass through the hole. The method of claim 7.

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