Boat comprising foam sticks

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of provisional patent application Ser. No. 63/623,853, filed on Jan. 23, 2024, by the present inventor, which is incorporated by reference in its entirety.

This application claims the benefit of provisional patent application Ser. No. 63/623,855, filed on Jan. 23, 2024, by the present inventor, which is incorporated by reference in its entirety.

FIELD

The present invention relates to the field of aquatic recreational sports articles and aquatic vehicles, in particular to a boat comprising foam sticks.

BACKGROUND AND PRIOR ART

Small boats driven by human power are one of the most commonly used equipment for aquatic recreational sports or transportation. For example, there are stand up paddle boards, bare rowboats, rowboats, and canoes, etc. According to the designs and materials, paddle boards may include epoxy paddle boards, inflatable paddle boards, soft paddle boards and other plastic paddle boards, etc.; rowboats may include rigid-hull rowboats and inflatable rowboats, etc.; canoes may include wooden canoes, canoes with a metal shell, and canoes with a plastic shell, etc. In addition, alternatively, the above small boats may be made of new materials such as carbon fibers and glass fibers, etc. In recent years, a variety of foldable rowboats and assembled type rowboats have also appeared.

The small boats mentioned above have their own advantages, but they also have the following shortcomings: the integral hulls of a boat are not easy to be repaired and restored to the original state after being damaged; the hull of an inflatable boat involves potential safety hazards, due to air-leaking after scratch or air-leaking from the valves; most types of boats are inconvenient to install additional accessories, such as stabilizers; the uses and functions of mentioned various types of boats are essentially limited to their originally-designed functions, and it is not convenient to extend the additional functions.

SUMMARY AND ADVANTAGES

To solve the above problems, the technical solution of the present invention provides a boat comprising foam sticks that has a high safety factor, is convenient to operate, is able to install additional accessories to extend the additional functions, and has multiple uses.

According to a first aspect embodiment of the technical solution of the present invention, provided is a boat comprising foam sticks, featured that the boat comprises foam sticks, tube caps, a main frame and vertical tubes; a plurality of foam sticks are provided and arranged in a row or in rows; tube caps are fitted around two ends of each of the foam sticks; a main frame that is positioned above the foam sticks, and the main frame comprises a left side tube, a right side tube, a front cross tube and a rear cross tube that are connected; the vertical tubes are vertically disposed outside the left side tube and right side tube.

In the above solution, the boat further comprises a left upper side tube and a right upper side tube that are disposed above the left side tube and right side tube respectively and are fixed by the vertical tubes.

In the above solution, the boat further comprises a bow frame and a stern frame that are connected with the main frame by the left upper side tube, the right upper side tube, the left side tube and the right side tube.

In the above solution, the bow frame comprises a upper tube of bow frame, a middle tube of bow frame and a lower tube of bow frame, wherein the upper tube of bow frame is in a folded line shape and is connected with the left upper side tube and right upper side tube respectively, the lower tube of bow frame is in a folded line shape and is connected with the left side tube and right side tube respectively, and the middle tube of bow frame is connected with an end bent part of the upper tube of bow frame and the lower tube of bow frame respectively, and the middle tube of bow frame is connected to the main frame.

In the above solution, the stern frame comprises a upper tube of stern frame, a middle tube of stern frame and a lower tube of stern frame, wherein the upper tube of stern frame is in a folded line shape and is connected with the left upper side tube and right upper side tube respectively, the lower tube of stern frame is in a folded line shape and is connected with the left side tube and right side tube respectively, and the middle tube of stern frame is connected with an end bent part of the upper tube of stern frame and the lower tube of stern frame respectively, and the middle tube of stern frame is connected to the main frame.

In the above solution, skin wrapped from bottom to top is provided at outer peripheries of the frame, the bow frame and the stern frame, and is fixed by fixing components.

In the above solution, an edge of the skin is provided with two rows of holes, and the edge of the skin is folded inward to wrap the frame, the bow frame and the stern frame, so that the two rows of holes are in one-to-one correspondence, and the fixing components passes through the two rows of holes for fixing.

In the above solution, casing tubes are sleeved on outer peripheries of the foam sticks.

In the above solution, the front and rear cross tubes are provided with a plurality of connecting holes.

In the above solution, the main frame is further provided with at least one middle cross tube connecting the left side tube and right side tube.

In the above solution, the middle cross tube is provided with holes in the middle cross tube.

In the above solution, each of the vertical tubes has a vertical tube bore.

In the above solution, the tube caps include front tube caps and rear tube caps; one end of each of the tube caps has a tubular structure adapted to an end portion of each of the foam sticks, and the other end is a closed end.

In the above solution, a mounting bracket is provided on each of the tube caps, the mounting bracket has a mounting hole, and at least a part of the connecting holes corresponds to the mounting hole.

In the above solution, the boat further comprises a connecting component connecting the connecting hole and the mounting hole.

In the above solution, the boat further comprises a fixing member located in the middle section of the foam sticks and fixing the foam sticks with the middle cross tubes.

In the above solution, a plurality of sections of foam sticks are provided and connected by means of the sleeve tube, and the inner diameter of a sleeve tube is adapted to the outer diameter of a foam stick.

In the above solution, the boat may include lower-layer foam sticks that are disposed below the foam sticks, and are fixed on the front cross tube, the rear cross tube, and on one of more than one of the middle cross tubes.

In the above solution, the foam sticks consists of cylinders and/or prisms.

In the above solution, the left side tube and the right side tube are combined by a plurality of tubes respectively.

In the above solution, the left side tube, the right side tube, the front cross tube and the rear cross tube are connected into an integrated structure.

In the above solution, the main frame is a welded structure.

In the above solution, the main frame is an assembled structure.

In the above solution, connecting parts are provided at the two ends of each of the front cross tube, the rear cross tube, and the middle cross tubes. The front cross tube, the rear cross tube, and the middle cross tubes are connected to the left side tube and the right side tube by the connecting parts.

The present invention has the following advantages:

The present invention discloses a boat comprising foam sticks. The boat comprises a plurality of foam sticks arranged in a row or in rows. The foam sticks are capable of generating buoyancy, so that when the boat is used in water, the hull will not sink owing to external damage such as scratching and puncturing, so the boat has a high safety factor.

The foam sticks and the tube caps may be easily disassembled and assembled, replaced and transported. So the boat is convenient to use.

There are a plurality of holes and vertical tubes on the frame, which can be used to install additional related accessories, so as to extend the additional functions.

BRIEF DESCRIPTION OF DRAWINGS

To explain embodiments of the present invention or technical solutions in the prior art more clearly, a brief introduction will be made to the accompanying drawings required in the embodiments or the description of the prior art. Apparently, the accompanying drawings in the following description only illustrate some embodiments of the present invention. Those having ordinary skills in the art can obtain other drawings on the basis of the structures shown in those accompanying drawings without expending any creative labor.

FIG. 1 is a schematic view of the overall structure of a boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 2 is a schematic view of a foam stick and a casing tube of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 3 is a schematic view of the main frame of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 4 is a schematic view of a rear tube cap of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 5a is a schematic view of the rear tube cap being connected with a rear cross tube of the boat comprising foam sticks according to an implementation of the first embodiment of the present invention;

FIG. 5b is a schematic view of the rear tube cap being connected with a rear cross tube of the boat comprising foam sticks according to another implementation of the first embodiment of the present invention;

FIG. 6 is a top view of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 7 is a schematic view of connection of a sleeve tube of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 8 is a schematic view of lower-layer foam sticks of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 9 is a schematic view of lower-layer rear tube caps being connected with the rear cross tube of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 10 is an exploded structural view of the main frame of the boat comprising foam sticks according to the first embodiment of the present invention;

FIG. 11 is a schematic view of the main frame of the boat comprising foam sticks according to the second embodiment of the present invention;

FIG. 12 is a schematic view of the main frame being connected with a bow frame and a stern frame of the boat comprising foam sticks according to the second embodiment of the present invention;

FIG. 13 is a schematic view of the bow frame and the stern frame of the boat comprising foam sticks according to the second embodiment of the present invention;

FIG. 14 is a schematic view of the skin of the boat comprising foam sticks according to the second embodiment of the present invention;

FIG. 15 is a schematic view of the skin being connected with the frame, the bow frame and the stern frame of the boat comprising foam sticks according to the second embodiment of the present invention;

FIG. 16 is a schematic view of connection of the sleeve tube of the boat comprising foam sticks according to the second embodiment of the present invention.

REFERENCE NUMERALS

10—foam stick; 10f—front foam stick; 10r—rear foam stick; 12—casing tube; 12f—front casing tube; 12r—rear casing tube; 20f—front tube cap; 20r—rear tube cap; 20r2—lower-layer rear tube cap; 22f—mounting bracket of front tube cap; 22r—mounting bracket of rear tube cap; 22r2—mounting bracket of lower-layer rear tube cap; 22M—mounting bracket of sleeve tube; 23—sleeve tube; 24r—through hole in mounting bracket of rear tube cap; 25a—threaded bolt assembly with nut; 25b—threaded bolt without nut; 26—connecting rod for mounting lower-layer tube cap; 28—top nut; 29—bottom nut; 30—main frame; 32L—left side tube; 32R—right side tube; 32Rf—front right side tube; 32Rr—rear right side tube; 33L—left upper tube; 33R—right upper tube; 33Rf-front right upper tube; 33Rr-rear right upper tube; 34F—front cross tube; 34R—rear cross tube; 34M1—first middle cross tube; 34M2—second middle cross tube; 34M3—third middle cross tube; 35—connecting hole; 36—holes in the middle cross tube; 37—vertical holes in left side tube and right side tube; 38—horizontal holes in left side tube and right side tube; 40L1—first left vertical tube; 40L2—second left vertical tube; 40L3—third left vertical tube; 40R1—first right vertical tube; 40R2—second right vertical tube; 40R3—third right vertical tube; 42—connecting tab; 44R—right internal connecting tube; 45—fixing bolt; 46R—right upper internal connecting tube; 52—upper tube of bow frame; 54—lower tube of bow frame; 56—middle tube of bow frame; 58—locking bolt set; 58h—hole; 62—upper tube of stern frame; 64—lower tube of stern frame; 66—middle tube of stern frame; 70—skin; 72—two rows of holes; 74—strap.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Exemplary embodiments will be illustrated in detail herein, examples of which are represented in the accompanying drawings. When the following description relates to the accompanying drawings, like numerals indicate the same or like elements throughout different accompanying drawings, unless otherwise indicated. Implementations described in the following exemplary embodiments do not represent all the implementations consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

The terms “first” and “second” etc. in the Spec. and Claims of the present invention are intended to differentiate similar objects, and may not be necessarily used to describe a specific order or precedence. It should be understood that the data used in such a manner is interchangeable under appropriate situations, so that the embodiment of the present invention described here can be implemented in an order besides the order illustrated or described here. Moreover, the terms “comprise” and “have” and any variant of them are intended to encompass non-exclusive inclusions, such as any processes, methods, systems, products or apparatuses that include a series of steps or units, not limited to the steps or units that are clearly listed; instead, such steps or units may include other steps or units that are not listed clearly or are intrinsic to those processes, methods, products, or apparatuses.

A plurality includes two or more.

It should be understood that the term “and/or” as used herein is merely an association describing the associated objects, and indicates the potential existence of three relationships, for example, A and/or B, which may indicate three scenarios: A exists separately, A and B exist at the same time, or B exists separately.

Embodiment 1

As shown in FIG. 1 and FIG. 3, an embodiment of the technical solution of the present invention provides a boat comprising foam sticks. The boat comprises foam sticks 10, tube caps, a mainframe 30 and vertical tubes.

A plurality of foam sticks 10 are provided and arranged in a row or in rows. Two ends of each of the foam sticks 10 are sleeved with the tube caps. The main frame 30 is fixedly disposed above the foam sticks 10 and the main frame comprises a left side tube 32L, a right side tube 32R, a front cross tube 34F and a rear cross tube 34R that are connected. The vertical tubes are vertically disposed outside the left side tube 32L and the right side tube 32R. In this embodiment, there are no specific restrictions on the overall width and length of the boat and the number of foam sticks 10 in each row, which can be set according to the actual situation. Based on the requirements for buoyancy and convenient operation, the overall width is preferably 60-150 cm, and the overall length is preferably 150-400 cm.

Preferably, a casing tube 12 having the same length or a similar length as the foam stick 10 may be sleeved on an outer periphery of each foam stick 10 to protect the foam stick 10 and reduce the frictional resistance of the hull when the boat travels in water. The casing tube 12 may be any suitable plastic tube; for example, it may be a PC tube containing polycarbonate, a PET tube containing polyester resin, a PVC tube containing polyvinyl chloride, a carbon fiber tube or a glass fiber tube. The inner diameter of the casing tube 12 may be equal to or slightly greater than the diameter of the foam stick 10. The casing tube 12 may be arranged on the foam stick 10 when the foam stick 10 cools down and shrinks, so that the casing tube 12 can tightly wrap the foam stick 10 and minimize the clearance between the inner wall of the casing tube 12 and the foam stick 10, thereby improving the impact resistance of the foam stick 10 and the casing tube 12 and preventing water accumulation in the tube in a better way.

Preferably, the main frame 30 is an integrated frame formed by a plurality of metal tubes welded together. The front cross tube 34F and the rear cross tube 34R are provided with a plurality of connecting holes 35. The main frame 30 is further provided with at least one middle cross tube connecting the left side tube 32L and the right side tube 32R. The middle cross tube is located between the front cross tube 34F and the rear cross tube 34R. Preferably, three middle cross tubes are provided, which are: a first middle cross tube 34M1, a second middle cross tube 34M2 and a third middle cross tube 34M3 respectively.

Further, there are holes 36 in the middle cross tubes, and the holes can be used for mounting anti-slip pads or seats, or mounting straps to prevent the foam sticks from sway or displacement, or mounting other accessories. There are vertical holes 37 in the left side tube 32L and the right side tube 32R of the main frame 30 in the vertical direction, and the holes can be used to mount foot rests, T-shaped grooved track or other accessories. When in use, the user can stand on or sit on the middle cross tubes of the main frame 30.

In this embodiment, the vertical tubes can protect and prevent the foam sticks 10 located at the leftmost and rightmost sides under the main frame 30 from sway or displacement. Preferably, a plurality of vertical tubes are provided on left and right sides to increase protection and stability of the foam stick 10, including: a first left vertical tube 40L1, a second left vertical tube 40L2, a third left vertical tube 40L3, a first right vertical tube 40R1, a second right vertical tube 40R2 and a third right vertical tube 40R3. These vertical tubes may be used to mount transport wheel-sets, stabilizers and other related accessories, and may also be used to mount other related accessories to assist in providing propulsion for the boat. In that way, the boat has a variety of uses, and it is also convenient to be equipped with additional accessories to extend additional functions.

Each of the vertical tubes has a vertical tube bore. To mount other accessories, the adaptive tubular components on the accessories may be inserted into the bores in the left vertical tube or right vertical tube of the boat, and may be locked and fixed by means of a clamp bolt set, so that the accessories are mounted and fixed on the left vertical tube or right vertical tube of the boat. Of course, the tubular components of the accessories and the vertical tubes can also be provided with spare through holes. The tubular components of the accessories are inserted into the bores of the vertical tubes of the frame, the through holes of two tubes may be aligned, and may be locked by means of bolt set passing through these holes, so that the accessories are mounted and fixed on the left vertical tube and/or right vertical tube of the frame.

The tube caps include front tube caps 20f and rear tube caps 20r. One end of each of the caps has a tubular structure adapted to an end portion of each of the foam sticks 10, and the other end is a closed end that may be a tapered tip or a flat head with an inclined edge.

Preferably, as shown in FIG. 4, FIG. 5a, FIG. 5b, and FIG. 6, the front tube cap 20f and the rear tube cap 20r are respectively provided with a mounting bracket of front tube cap 22f and a mounting bracket of rear tube cap 22r. The mounting bracket of front tube cap 22f and the mounting bracket of rear tube cap 22r are respectively provided with a mounting hole, and at least part of the connecting holes 35 correspond to the mounting holes. The boat further comprises a connecting component connecting the connecting hole 35 and the mounting hole. The front tube cap 20f and the rear tube cap 20r are respectively fixed with the front cross tube 34F and the rear cross tube 34R. The inner diameter of the tubular section of the tube cap may be slightly greater than the outer diameter of the foam stick 10, or slightly greater than the outer diameter of the casing tube 12 that is arranged on the foam stick 10, so that the tube cap can cover the foam stick 10 or the casing tube 12 will not get loose easily.

In particular, the connecting component is a bolt. In a preferred implementation, using connection of the rear tube cap 20r and the rear cross tube 34r as an example, as shown in FIG. 5a, the bolt is a threaded bolt assembly 25a with nut that passes through the through hole in mounting bracket of rear tube cap 24r and then through the connecting hole 35 for locking and fixing the nuts. In another preferred implementation, as shown in FIG. 5b, the bolt is a threaded bolt 25b without nut. At this point, the connecting hole 35 is a hole with internal threads. The threaded bolt without nut 25b is inserted into the through hole in mounting bracket of rear tube cap 24r, and then directly screwed into the threaded hole in the connecting hole 35 for fixation. The front tube cap 20f and the front cross tube 34F are connected in the same way, which is not repeated here.

As shown in FIG. 7, to prevent the foam sticks 10 from sway or displacement, a fixing member is further disposed in the middle of the foam sticks 10 and fixedly connected with the middle cross tubes to realize an effect of being fixed to the middle of the foam sticks 10. The fixing member may fix all the foam sticks 10, and may also fix the foam sticks 10 with large sway according to the use situation. The fixing member may be a sleeve tube 23 having an inner diameter adapted to the outer diameter of each of the foam sticks 10, and is arranged on the middle of the foam stick 10, and has the same connection structure as that of the front tube cap 20f and the rear tube cap 20r. The sleeve tube 23 is mounted and fixed on the middle cross tube through the mounting bracket of sleeve tube 22M. The fixing component may also be a strap wrapped around one or more foam sticks at a time and in binding connection with the middle cross tube. Of course, other structures for stabilizing the foam sticks 10 may also be used for the fixing member, which are not limited herein.

In another preferred implementation, the sleeve tube 23 can also serve as a connecting structure where multiple sections of foam sticks 10 are assembled by means of the sleeve tube 23 in a longitudinal direction when in use. That is, the foam sticks 10 are connected by means of the sleeve tube 23 in a length direction. Each of the foam sticks 10 is divided into two or more sections, which can be designed according to the actual situation, and is not limited herein.

For example, the foam stick 10 is divided into two sections, including a front foam stick 10f and a rear foam stick 10r. The sleeve tube 23 is mounted and fixed on the middle cross tube by means of the mounting bracket of sleeve tube 22M. A front casing tube 12f and a rear casing tube 12r are arranged on outer peripheries of the front foam stick 10f and the rear foam stick 10r respectively. The front foam stick 10f and the rear foam stick 10r are fixed by means of the sleeve tube 23.

As shown in FIG. 8 and FIG. 9, the foam sticks 10 further have lower-layer foam sticks disposed below the foam sticks 10 and fixed by the connecting hole 35 in the front cross tube 34F, and/or the rear cross tube 34R, and/or the middle cross tubes. This can increase the overall buoyancy. Also, casing tubes are arranged on the outer peripheries of the lower-layer foam sticks of which two ends are provided with the caps.

In particular, the lower-layer rear tube cap 20r2 is mounted in such a way that it is mounted and fixed on the rear cross tube 34R of the main frame by means of a connecting rod for mounting lower-layer tube cap 26. The connecting rod for mounting lower-layer tube cap 26 may be a screw rod that has a flattened middle section and threads at two ends. The upper threaded section of the connecting rod for mounting lower-layer tube cap 26 is locked and fixed by a top nut 28 after passing through the connecting hole of the rear cross tube 34R, and the lower threaded section of the connecting rod for mounting lower-layer tube cap 26 is locked and fixed by a bottom nut 29 after passing through the hole in the mounting bracket of lower-layer rear tube cap 22r2. Similarly, the lower-layer front tube caps may also be mounted and fixed to the front cross tube 34F in the same way. The foam sticks and caps in the lower layer are mounted and fixed to the frame.

Preferably, the front and rear sections of the main frame 30 can be provided with additional welded front and rear cross tubes for mounting the lower-layer foam sticks and lower-layer tube caps. In order to prevent the lower-layer foam sticks from sway or displacement, a lower-layer sleeve tube with a mounting bracket may be arranged on the middle section of each lower-layer foam stick, and the lower-layer sleeve tube may be mounted and fixed to the middle cross tubes of the main frame 30 in the same way as the lower-layer caps are mounted. It is also possible to prevent the lower-layer foam sticks from sway or displacement by wrapping straps around the middle section of each lower-layer foam stick and fixing the straps to the middle cross tubes. The number of the lower-layer foam sticks may be increased or decreased as needed in case of enough space, which does not need to correspond to the number of the upper-layer foam sticks 10.

The foam sticks 10 consists of cylinders and/or prisms. The prisms include triangular prisms, cuboids, hexagonal prisms, etc. The foam sticks 10 may be cylindrical lightweight foam sticks without pores, and may also be lightweight expandable polyethylene sticks made of a raw material containing polyethylene through foaming and extrusion molding process, or may be nonabsorbent and lightweight EVA foam sticks made of a raw material containing ethylene and vinyl acetate through foaming and extrusion molding. In the case that the width of the boat is preset, the cross-sectional diameters of the foam sticks 10 may be different, and the number of foam sticks 10 in each row may be altered accordingly. Preferably, a row of foam sticks 10 may contain eight cylindrical foam sticks 10, and the cross-sectional diameter of each foam stick 10 may be 10 cm.

As shown in FIG. 10, the front cross tube 34F, the rear cross tube 34R and the middle cross tube included in the frame 30 may be connected to the left side tube 32L and the right side tube 32R by a welding method; alternatively, the connecting tab 42 with bolt holes may be welded to the two ends of each cross tube, the two ends of each cross tube may be bent and then bolt holes are formed in the two ends, and then a set of bolts may be inserted through the bolt holes at the two ends of each cross tube and horizontal holes 38 in left side tube and right side tube, to connect and fix the cross tubes to the left side tube and the right side tube, so that a complete main frame 30 is formed. Of course, the cross tubes may be assembled and connected to the left side tube and right side tube in other ways.

The main frame 30 may be formed by a plurality of frame sections assembled together, besides the integrated frame as presented above. For example, the main frame 30 may be formed by a front frame section and a rear frame section that are assembled together. The connection between the front frame section and the rear frame section may be realized by inserting the internal connecting tubes with bolt holes into the front side tube and the rear side tube. Then, the holes in the front side tube and rear side tube may be aligned with the holes in the internal connecting tubes, and then a set of bolts may be inserted through these holes for locking and fixing, thereby realizing connection of the front frame and the rear frame. As shown in FIG. 7, the front right side tube 32Rf and the rear right side tube 32Rr are assembled and connected by inserting a right internal connecting tube 44R into the front right side tube 32Rf and the rear right side tube 32Rr and then aligning the holes in the front side tube and rear side tube and the hole in the right internal connecting tube 44R, and then locked and fixed using fixing screw 45 passing through these holes, thereby realizing assembling and connection of the right side tube of front frame and the right side tube of rear frame. Similarly, the front left side tube and the rear left side tube may be assembled and connected in the same way. Thus, the front frame and the rear frame can be assembled and connected. Of course, the front frame and the rear frame may also be assembled and connected in other ways, which is not limited herein.

In this embodiment, the main frame 30 of the boat may be manufactured from a variety of plastic tubes, or plastic steel tubes, or carbon fiber materials, or glass fiber materials, or other new composite materials, in addition to the above-mentioned metal tubes. The above-mentioned materials may be connected and assembled into a main frame 30 by means of joint connection, adhesive connection, mechanical connection or mixed connection.

As shown in FIG. 11, at least one side tube is further provided above the left side tube 32L and/or the right side tube 32R and is fixed by means of the vertical tube. The addition of a side tube structure, on one hand, enables more structures to be externally connected to increase the functionality of the boat, and on the other hand, the addition of a side tube is equivalent to heightening the sides of the boat to form a guardrail structure, so that the user is safer when in use. Preferably, a left upper tube 33L and a right upper tube 33R are disposed above the left side tube 32L and the right side tube 32R respectively, and fixed by vertical tubes.

Embodiment 2

As shown in FIG. 12 and FIG. 13, unlike Embodiment 1, this embodiment provides a boat comprising foam sticks. The boat further comprises a bow frame and a stern frame that are connected to the main frame by the left upper tube 33L, the right upper tube 33R, the left side tube 32L and the right side tube 32R.

The bow frame comprises an upper tube of bow frame 52, a middle tube of bow frame 56 and a lower tube of bow frame 54. The upper tube of bow frame 52 is in a folded line shape and is connected with the left upper tube 33L and the right upper tube 33R respectively. The lower tube of bow frame 54 is in a folded line shape and is connected with the left side tube 32L and the right side tube 32R respectively.

In particular, two ends of the upper tube of bow frame 52 are inserted into the holes 58h of the left upper tube 33L and the right upper tube 33R, and two ends of the lower tube of bow frame 54 are inserted into the holes 58h of the left side tube 32L and the right side tube 32R, and fixed by a locking bolt set 58. The middle sections of the upper tube of bow frame 52 and the lower tube of bow frame 54 are bent to form a bow of the hull, and are respectively connected with the upper tube of bow frame 52 and the lower tube of bow frame 54 by a longitudinal middle tube of bow frame 56 passing through the locking bolt set 58. The connection position is located on the bow of the boat. The middle tube of bow frame 56 extends in a length direction of the foam sticks 10 to be fixed with the middle cross tube. Thus, the tubes of bow frame are combined and fixed to the main frame 30.

The stern frame comprises an upper tube of stern frame 62, a middle tube of stern frame 66 and a lower tube of stern frame 64. The upper tube of stern frame 62 is in a folded line shape and is connected with the left upper tube 33L and the right upper tube 33R respectively. The lower tube of stern frame 64 is in a folded line shape and is connected with the left side tube 32L and the right side tube 32R respectively.

In particular, two ends of the upper tube of stern frame 62 are inserted into the holes 58h of the left upper tube 33L and the right upper tube 33R, and two ends of the lower tube of stern frame 64 are inserted into the holes 58h of the left side tube 32L and the right side tube 32R, and fixed by a locking bolt set 58. The middle sections of the upper tube of stern frame 62 and the lower tube of stern frame 64 are bent to form a stern of the hull, and are respectively connected with the upper tube of stern frame 62 and the lower tube of stern frame 64 by a longitudinal middle tube of stern frame 56 passing through the locking bolt set 58. The connection position is located on the stern of the boat. The middle tube of stern frame 66 extends in a length direction of the foam sticks 10 to be fixed with the middle cross tube. Thus, the tubes set of stern frame are combined and fixed to the main frame 30. In that way, a whole hull frame is formed, with foam sticks below.

Further, skin 70 wrapped from bottom to top is provided at outer peripheries of the main frame 30, the bow frame and the stern frame, and is fixed by fixing components.

As shown in FIG. 14 and FIG. 15, an edge of the skin 70 is provided with two rows of holes 72, and the edge of the skin 70 is folded inward to wrap the main frame 30, the bow frame and the stern frame, so that the two rows of holes 72 are in one-to-one correspondence, and the fixing components pass through the two rows of holes 72 for fixing. Preferably, the fixing components are straps 74 that pass through the two rows of holes 72 in one-to-one correspondence for binding and fixing. Alternatively, a single component, such as a long strap, may be applied for fixing.

In particular, the skin 70 is made of a fabric material according to the shape of the hull, and the fabric material may be PVC tarpaulin, a vinyl fabric material, a nylon material or a synthetic material containing rubber. Alternatively, it may be made of other fabric materials.

The main frame 30 may be formed by a plurality of frame sections assembled together, besides the integrated frame as presented above. For example, the frame 30 may be formed by a front frame section and a rear frame section that are assembled together. The connection between the front frame section and the rear frame section may be realized by inserting the internal connecting tubes with bolt holes into the front side tube and the rear side tube. Then, the holes in the front side tube and rear side tube may be aligned with the holes in the internal connecting tubes, and then a set of bolts may be inserted through these holes for locking and fixing, thereby realizing connection of the front frame and the rear frame. As shown in FIG. 16, the front right side tube 32Rf and the rear right side tube 32Rr are assembled and connected, and the front right upper tube 33Rf and the rear right upper tube 33Rr are assembled and connected. The right internal connecting tube 44R is inserted into the front right side tube 32Rf and the rear right side tube 32Rr, the holes in the front side tube and rear side tube are aligned with the holes in the right internal connecting tube 44R, and then the fixing screw 45 passes through these holes for locking and fixing. The right upper internal connecting tube 46R is inserted into the front right upper tube 33Rf and the rear right upper tube 33Rr, the holes in the front and rear upper side tubes are aligned with the holes in the right upper internal connecting tube 46R, and then the fixing screw 45 passes through these holes for locking and fixing, thereby realizing assembling and connection of the front right side tube and the rear right side tube, the front right upper tube and the rear right upper tube. Similarly, the front left side tube and the rear left side tube, as well as the front left upper tube and the rear left upper tube may be assembled and connected in the same way. Thus, the front frame and the rear frame can be assembled and connected. Of course, the front frame and the rear frame may also be assembled and connected in other ways, which is not limited herein.

It should be noted that the term “comprise”, “include” or other variation thereof is used to cover non-exclusive inclusion, such that a process, method, article or device comprising a plurality of elements includes not only those elements but also other elements not listed explicitly, or further includes elements that are inherent to such a process, method, article or device. An element defined by the phrase “comprising a . . . ” does not exclude the presence of additional identical elements in the process, method, article or device including the element, provided that there is no more confinement.

The above-mentioned serial numbers of the embodiments of the present utility model are merely for the purpose of description and do not represent the advantages and disadvantages of the embodiments.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-mentioned specific embodiments, which are merely representative and not limiting. Various modifications and alternations may be made by those having ordinary skills in the art inspired by the present utility model without departing from the spirit of the present utility model and the scope of protection defined by the claims. However, all of such modifications and alternations shall be deemed as falling in the scope of protection of the present utility model.