JP2019077234A - Man-power propulsion boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the burden on a user by eliminating the conventional general operation of rowing with an oar or stepping on a pedal to rotate a paddle or a screw when advancing a boat. The purpose is to provide a human-powered propulsion boat that can obtain sufficient propulsion at high speed while having fun with the unique movements of the user. SOLUTION: A human-powered propulsion boat according to the present invention has a board 1 provided with a pair of straps 2 on which an operator Q puts his / her feet while standing sideways, and an operation pole 4 erected on the board 1. A fin-shaped skeg tail portion 5 extending to the lower rear side in the lower rear portion of the board 1 and a propulsion plate 7 connected to the lowermost portion of the skeg tail portion 5 via a shaft 6 are provided. A rectangular plate 8 having a predetermined length arranged along the traveling direction of the board 1 is provided at the upper end thereof, and handles 9A and 8B are attached to both ends of the rectangular plate 8. [Selection diagram] Fig. 1

Description

  The present invention is used, for example, for marine sports / leisures on the beach side, etc., and also for boating etc. The invention relates to a man-powered boat, capable of reducing the burden on the user by eliminating the conventional general motion of rotating the wheel, and obtaining a sufficient propulsive force of speed while enjoying the unique motion of the user. It is a thing.

  In addition, it relates to a man-powered boat that allows a plurality of users to perform unique movements together by connecting a plurality of boats, so that all the plurality of users can enjoy sufficient propulsive power. is there.

  Generally, when advancing a boat, for example, a rower is used to crawl, or a pedal is depressed to rotate a paddle or a screw to obtain the propulsion of the boat.

  Further, as shown in Patent Document 1, when the boat is advanced using an oar, the oar bends from the point at which the oar fulcrum is hit, and a boat oar in which the boat moves forward if the oar is raised is disclosed.

  That is, the oar is separated from the point of contact with the fulcrum, and a pair of gears having a shaft hole at the center is provided at the heel and fixed to each of the separated oars. The upper and lower fixing plates are tightened with the upper and lower fixing plates through the upper fixing plate and the lower fixing plate so that the upper and lower fixing plates can bend freely. The upper fixing plate and the lower fixing plate are configured by providing a pair of holes through which the all mounting bolts pass and a support pipe.

  In addition, Patent Document 2 discloses a towing boat that promotes by driving a pair of left and right pedals, and the left pedal can drive the left paddle and the right pedal can drive the right paddle independently. By changing the rotational speed and rotational direction of the left and right pedals, it is possible to disclose a rowing boat capable of ordinary turning and turning of a fixed position with a simple device configuration without a rudder. ing.

JP 2000-198492 A JP 2002-205690 A

  As described above, when advancing a boat, for example, an action of rowing with an oar is required, and the action is burdensome to the boat user. Also, the action of rowing with an oar is itself general and lacking in interest.

  Furthermore, as shown in the above-mentioned Patent Document 1, also when advancing the boat using an oar whose fulcrum is bent, the user of the boat is similarly burdened, and the action of rowing with the oar is general. I was lacking in interest.

  Moreover, as shown in the above-mentioned patent document 2, when advancing a boat by stepping on a pedal and rotating a paddle, the operation was burdening the user of the boat. Also, the action of stepping on the pedal was itself general and lacking in interest.

  Therefore, the present invention has been created in view of the conventional circumstances as described above, and when advancing a boat, a conventional general method of using an all to crawl or stepping on a pedal and rotating a paddle or a screw when advancing a boat It is an object of the present invention to provide a man-powered boat that can eliminate the various motions and reduce the burden on the user, and can obtain sufficient propulsive power for speeding while enjoying the unique motions of the user.

  Also, by connecting a plurality of boats, a plurality of users perform unique movements together to provide a man-powered boat that allows all the plurality of users to enjoy sufficient propulsive power while having fun. It also aims.

  According to the first aspect of the present invention, there is provided a board having a pair of straps for inserting a foot in a state where the operator stands sideways, an operation pole provided on the board, and a lower rear portion of the board. In a man-powered propulsion boat comprising a fin-like skeg tail portion extending downward and rearward and a propulsion plate connected to the lowermost portion of the skeg tail portion via a shaft, the operation pole is provided at its upper end in the traveling direction of the board The problem mentioned above was solved by providing the rectangular board of the predetermined length arrange | positioned along, and attaching the handle to the both ends of a rectangular board.

  According to the human powered boat according to the first aspect of the invention, the operator stands on the board sideways so that the left and right legs follow the traveling direction of the board, and puts the legs in the pair of straps on the board to operate the operation pole By holding the front and rear hands with both hands, the board can be propelled through the pitching action of the operator.

  For this reason, it is necessary to obtain sufficient propulsive force for speeding while reducing the burden on the user by eliminating the conventional general operation of crawling with an oar or stepping on a pedal and rotating a paddle or a screw. Can. In addition, the operator's pitching motion can provide sufficient propulsive power to speed while enjoying.

  The invention of claim 2 according to the present invention solves the above-mentioned problems by forming the board so as to have its own buoyancy and to be inclined or curved in an up and down shape.

  According to the man-powered propulsion boat according to the second aspect of the present invention, it is possible to minimize the effects of wave resistance, frictional resistance, pressure resistance, etc. on the board by its own buoyancy, and simultaneously sink the board in the traveling direction at the same time. It can be suppressed.

  The invention of claim 3 according to the present invention solves the above-mentioned problems by providing the floater on the lower surface of the board.

  According to the human powered boat according to the third aspect of the invention, since the floater provided on the lower surface of the board maintains the buoyancy, the effects of wave resistance, frictional resistance, pressure resistance, etc. on the board can be further suppressed.

  The invention of claim 4 according to the present invention is characterized in that the pair of straps are disposed at a predetermined interval along the traveling direction of the board and are movable in the direction along the traveling direction of the board. Solved the problems.

  According to the human powered boat according to the fourth aspect of the present invention, the distance between the pair of straps can be easily adjusted according to the distance between the operator's individual feet and adjusted to the distance between the individual feet. it can.

  The invention of claim 5 according to the present invention solves the above-mentioned problem by the fact that the operating pole can tilt in the direction orthogonal to the traveling direction of the board.

  According to the human powered boat according to the fifth aspect, when the board (boat) rolls to the operator side, the body of the operator can be prevented from being pushed and dropped by the operation pole.

  According to the invention of claim 6, according to the present invention, the operator stands sideways on the board so that the left and right feet are along the traveling direction of the board, inserts the legs into a pair of straps on the board, The above problem is solved by the board propelling through the operation of holding the holding hand with both hands and pitching the operator.

  According to the man-powered boat according to the sixth aspect, it is possible to provide a man-powered boat that can speed up while reducing the feeling of crawling.

  Specifically, it eliminates the conventional general motions of using an oar and stepping on a pedal and rotating a paddle or a screw, thereby reducing the burden on the user and achieving sufficient propulsive power to speed up You can get In addition, the operator's pitching motion can provide sufficient propulsive power to speed while enjoying.

  According to a seventh aspect of the present invention, in the pitching operation of the operator, the operator pulls the rear handle while pushing the front handle of the board while putting weight on the front foot. At the same time, the foot on the back side is pulled up, the depression on the front side of the board and the lifting action on the back side of the board, the action to pull up the front hand while depressing the hand on the back side of the board, The above-described problem is solved by simultaneously and alternately pulling up the back side of the board and pulling up the front side of the board by performing an operation of pulling up the front foot at the same time while applying weight.

  According to the man-powered boat according to the seventh aspect, the propulsive force can be easily obtained by the reciprocal movement (principle of forceps) of the weight (center of gravity) by the pitching motion of the operator.

  According to the invention of claim 8, according to the present invention, by the operator's pitching operation, the shaft connected horizontally via the skeg tail portion connected to the board bends up and down, and at the same time, the propulsion plate further follows the wing The above-mentioned problem was solved by swaying up and down like a fluttering motion and propelling the board.

  According to the man-powered propulsion boat according to the eighth aspect of the present invention, bending of the shaft causes a phenomenon such as movement of the body when moving the tail fin of the dolphin on the propulsion plate, and the propulsion plate is made of penguins A flapping movement like a wing (flipper) takes place, and the propulsion can be amplified with a mechanism similar to that of the tail fish of the world's fastest fish swimming in the world at speeds exceeding 100 km / h.

  The invention of claim 9 according to the present invention solves the above-mentioned problems by forming the propulsion plate on the lower surface side of the board in a substantially crescent shape having a large width in plan view.

  According to the man-powered propulsion boat according to the ninth aspect, the area of the propulsion plate can be reduced and the propulsion can be efficiently obtained by utilizing the bending.

  The invention of claim 10 according to the present invention solves the above-mentioned problems by allowing the board to be vertically or horizontally connected via a connecting device.

  According to the human powered boat according to the tenth aspect of the present invention, it is possible to easily provide a human powered boat which can be enjoyed by a plurality of people by connecting the plurality.

  For example, when a plurality of human powered boats are connected in the lateral direction, when the operator performs a pitching operation, the same movement as the movement of his own boat is reflected in the other boats. Therefore, it is possible for the operators to perform an action of pitching with two or more people while enjoying each other.

  In addition, when multiple human powered boats are connected in the vertical direction, if your boat raises the front and pitches the rear backward, the rear of the front boat rises equally, and the front of the rear boat is equivalent. Since the movement of lowering is reflected on the other boat, it is possible for the operators to perform the action of pitching with a plurality of people while having fun while carefully putting their breaths together.

  When a plurality of human powered boats are connected in the lateral direction, the same movement as the movement of one's own boat is reflected on the other boats, so that the operators can hold their breath relatively easily. On the other hand, when a plurality of human powered boats are connected in the vertical direction, when their boat raises the front and pitches the rear backward, the rear of the boat in the front rises equally, and the front of the boat in the rear is Since the movement of lowering equally is reflected on the other boats, the movement of each boat will be different, and it will be difficult for the operators to hold their breath, and the operation will require skill.

  According to an eleventh aspect of the present invention, there is provided a board which is disposed along the traveling direction of the board, and which comprises a long tread board for swinging the legs while the operator is standing sideways, An operation pole erected at the center of a long tread plate, a propulsion plate disposed at the lower rear of the board, and a transmission mechanism for transmitting the swinging movement of the elongated tread plate as the vertical swing movement of the propulsion plate In the man-powered boat equipped with the operation pole, at the upper end thereof, the operation pole is provided with a rectangular plate of a predetermined length arranged along the traveling direction of the board, and the handle is attached to both ends of the rectangular plate Solves the problems described above.

  According to the human power propulsion boat according to the eleventh aspect, the stepping motion of the pedal type footboard by the operator can efficiently transmit the motion as vertical motion to the propulsion plate through the transmission mechanism, and the propulsion power can be easily achieved. You can get

  The invention according to claim 12 of the present invention comprises a swingable hydrofoil substantially at the center of the lower surface of the board, the hydrofoil having an upper surface inclined, a lower surface being horizontal, and a forward direction forward direction (intake A flat cylindrical water flow accelerating box with a smaller cross-sectional area at the rear (discharge side) than at the rear, and a horizontal plate with the same width as the box, with the lower part straight and the upper part curved upward The above-described problems are solved by providing a main wing) and.

  According to the human powered boat according to the twelfth aspect of the invention, the flow velocity is increased by throttling the flow of water passing through the inside of the box, and at the same time the flow velocity is reduced while generating a lower pressure than the low speed portion (venturi effect). Reduce the pressure by increasing (Bernoulli's theorem).

  In addition, when the accelerated water flow passes along the curved upper portion of the horizontal plate (main wing), the horizontal plate (main wing) is drawn upward by a reaction when the water flow is drawn along the curved surface (Coanda effect) The lower part of the horizontal plate (main wing) by lowering the pressure in the upper part by making the water flow velocity of the curved upper part of the horizontal plate (main wing) greater than the horizontal flow velocity (The Bernoulli's theorem) The static pressure difference between the and the upper part can be expanded, and the lift force caused by the generation of circulation (round integral of the flow velocity) around the horizontal plate (main wing) can be increased.

  Invention of Claim 13 which concerns on this invention solved the subject mentioned above by connecting so that the lower surfaces of the said box and a horizontal plate (main wing | blade) may become a straight line.

  According to the manual propulsion boat according to the thirteenth aspect, the flow resistance in the traveling direction can be minimized as much as possible on the lower surface of the box and the horizontal plate (main wing).

  The invention of claim 14 according to the present invention solves the above-described problem by connecting the horizontal plate (main wing) to the center of the rear (discharge side) of the box at an arbitrary elevation angle.

  According to the manual propulsion boat according to the fourteenth aspect, since the horizontal plate (main wing) has an angle of attack, when the accelerated water flow passes along the curved upper portion of the horizontal plate (main wing), the water flow is curved Due to the reaction when being pulled along, the horizontal plate (main wing) is pulled upward (Coanda effect), and the circulation of the turning of the horizontal plate (main wing) (circulation integral of the flow velocity) (Jukovsky's theorem) etc. It is possible to generate lift efficiently.

  According to a fifteenth aspect of the present invention, the hydrofoil is connected by a shaft in the forward and backward directions, and a bearing is provided at the center of the shaft so as to be able to turn longitudinally in the forward direction. The problems described above are solved by connecting to the lowermost part of the vertically attached fins.

  According to the manual propulsion boat according to the fifteenth aspect of the present invention, the shaft connecting the hydrofoil back and forth is parallel to the water flow received from the traveling, and lifts at a stable attack angle without being affected by the hull propelled by pitching. Can occur. In addition, it also serves to suppress heaving caused by the vertical movement of the propulsion plate.

  The invention according to claim 16 of the present invention is characterized in that a bellows-like block is provided on the lower surface of the board in the traveling direction so that air is accumulated, and an elevation angle is given to the water contact portion of the block As a result, we solved the above-mentioned problems.

  According to the human powered boat according to the sixteenth aspect of the present invention, it is possible to reduce the resistance of the bottom of the boat by the lift force accompanying the traveling and the air mixed in the bottom. Moreover, in order to make pitching smooth, it will also suppress the suction of the water surface by the Coanda effect which generate | occur | produces on the curved bottom.

  The human powered boat according to the present invention alleviates the burden on the user by eliminating the conventional common operation of using the oar to crawl and pedaling and rotating the paddle and screw when advancing the boat. In addition, it is possible to provide a man-powered boat that can obtain sufficient propulsive power for speed while enjoying the unique movement of the user.

  Also, by connecting a plurality of boats, a plurality of users perform unique movements together to provide a man-powered boat that allows all the plurality of users to enjoy sufficient propulsive power while having fun. It can also be done.

It is a perspective view showing composition of a man-powered boat in one embodiment of the present invention. It is a top view which shows the structure of the propulsion | promotion board connected via the shaft to the lowermost part of the skeg tail part. It is a front view which shows the structure of a human power propulsion boat. It is a disassembled perspective view which shows the attachment structure of an operation pole. An example of pitching movement by an operator is shown, (a) is a side view in a horizontal state, (b) is a side view in the case of weight shift backward, and (c) is a side view in a case where it returns to a horizontal state. (D) is a side view when weight is moved forward. It is a perspective view showing composition of a man-powered boat in another example of the present invention. It is a perspective view of the state which transversely connects a board by a connection tool. It is a perspective view showing composition of a packing cube used for transverse connection of a board. FIG. 6A shows a lateral connection state of the board, FIG. 7A is an exploded perspective view showing a state in which the connection attachment is attached to the board, and FIG. 7B is a perspective view showing a horizontal connection state of the board using packing cubes. . It is a side view of the state which connected the board longitudinally by the clamp unit. An example of the clamp unit for vertical connection is shown, (a) is a side view showing the horizontal state of the board when it is broken in a V shape through the middle hinge, (b) is through the middle hinge (C) is a side view showing a valley state of the board when it is excessively broken into a V shape through a central hinge when the board is leveled. It is a perspective view which shows the structure of the human power propelled boat of a pedal foot type in other embodiment of this invention. It is a side view explaining the principle of operation of a pedal foot type man-powered boat according to another embodiment of the present invention. It is a perspective view which shows the structure of the human power propelled boat of a pedal foot type in other embodiment of this invention. It is a side view explaining the principle of operation of a pedal foot type man-powered boat according to another embodiment of the present invention. The modification of a propulsion plate is shown, (a) is a perspective view, (b) is a rear view. FIG. 1 is a perspective view showing the configuration of a man-powered boat equipped with hydrofoil to increase lift. An example of the hydrofoil for increasing a lift is shown, (a) is a perspective view, (b) is a side view, (c) is sectional drawing explaining the generation | occurrence | production principle of a lift. The other example of the hydrofoil for increasing lift is shown, (a) is a perspective view, (b) is a side view, (c) is sectional drawing explaining the generation | occurrence | production principle of lift. The structure of the man-power-propelled boat which provided the bellows-like block in the bottom face of the board and reduced water surface resistance is shown, (a) is a side sectional view, (b) is a perspective view.

Embodiment
An embodiment of the present invention will be described below with reference to the drawings.

<Whole composition of the boat>
The man-powered boat according to the present invention, as shown in FIGS. 1 and 3, is provided with a pair of straps 2 for inserting a foot in a state where the operator Q (see FIG. 5) stands sideways, for example, polyurethane The board 1 is made of foam or inflatable material and is provided with a pair of floaters 3 on the lower surface, and is movable in the lateral direction by being fixed in the traveling direction erected substantially at the center of the board 1 (operator When the hull rolls to the Q side, the operation pole 4 (see FIG. 4) which can prevent the operator Q from being pushed and dropped), and the fin-like skeg tail portion 5 extending to the lower rear at the lower rear of the board 1 An area formed by a pair of shafts 6 tapered horizontally backward at the lowermost part of the skeg tail portion 5 is reduced, and a wide pusher plate 7 (see FIG. 2) is generally formed.

  In addition, the operation pole 4 can tilt in a direction perpendicular to the traveling direction of the board 1, and the upper end thereof is provided with a rectangular plate 8 of a predetermined length arranged along the traveling direction of the board 1, Handles 9A and 9B are attached to both ends of the rectangular plate 8. The operation pole 4 is formed so as to be expandable and contractible in accordance with the height of the operator Q.

  Furthermore, the board 1 is formed so as to be buoyant by itself and to be inclined forward or backward (see FIG. 1) or curved (see FIG. 6).

  The pair of straps 2 are arranged at predetermined intervals along the traveling direction of the board 1 (see FIGS. 1 and 6), and are movable in the direction along the traveling direction of the board 1 (see FIG. 1).

  As shown in FIG. 2, the propulsion plate 7 on the lower surface side of the board 1 is formed in a substantially crescent shape that is wide in plan view. Further, the pair of shafts 6 gradually expand rearward from the skeg tail portion 5, and the convex curved side at the center of the propulsion plate 7 is connected to each tip of the shafts 6.

  By using the mounting jig 10 on the upper surface of the board 1, as described above, the operation pole 4 is attached so that the operation pole 4 itself is fixed in the traveling direction and movable in the lateral direction.

  That is, as shown in FIG. 4, the mounting jig 10 is slidable in the rectangular frame-like rail 11 having a groove 11 a in the longitudinal direction provided on the upper surface of the board 1 and in the groove 11 a. A pair of sliders 12 in the shape of a square nut, a base 14 having long grooves 14 b on both sides so as to be screwed and fixed to the sliders 12 inside the grooves 11 a by bolts 13, and a U-shaped A block-shaped holder 15 is provided. The base 14 is movable on the rail 11 and screwed in place by the slider 12 and the bolt 13.

  The lower end of the operation pole 4 is pivotally attached to the upper surface of the base 14 by a pair of hinges 14 a so as to be tiltable in a direction perpendicular to the traveling direction. Further, the holder 15 is rotatably attached by a support shaft 15 b which is provided at a position corresponding to the central axis of the operation pole 4 on both side surfaces of the base 14. An arc-shaped concave portion 15 a for holding the operation pole 4 from one side when the holder 15 stands up is formed on the upper surface of the outer end side of the holder 15.

  Then, as shown in FIGS. 1 and 4, in the state where the recess 15 a of the holder 15 is removed from the operation pole 4, the operation pole 4 can tilt in the direction orthogonal to the traveling direction of the board 1. Further, in a state where the recess 15a of the holder 15 is directed to the operation pole 4 and the operation pole 4 is held in the recess 15a, tilting of the operation pole 4 in the direction orthogonal to the traveling direction of the board 1 is blocked It will be done.

<Structure of promotion>
Next, the principle of the propulsion operation will be described. First, the operator Q stands sideways on the board 1 so that the left and right feet follow the traveling direction of the board 1 and the feet on the pair of straps 2 on the board 1 , Hold the front and rear handles 9A and 9B of the operation pole 4 with both hands, and push the board 1 through the pitching operation of the operator Q.

  That is, as shown in FIG. 5A, the operator Q stands sideways with respect to the traveling direction, holds the handles 9A and 9B on the operation pole 4, and inserts the foot into the strap 2 on the board 1. Then, as shown in FIG. 5 (b), while pushing down the rear handle 9B, the front handle 9A is pulled up, and at the same time weight is put on the rear foot, and the front foot is pulled up. Go down and pitch forward as you go up.

  By the pitching operation of the operator Q, the skeg tail portion 5 connected to the board 1 descends, the horizontally connected shaft 6 swings down, and the propulsion plate 7 further swings down and promotes.

  Next, as shown in FIGS. 5 (c) and 5 (d), in order to raise the push plate 7 upward, while pushing down the front handle 9A, while pulling up the rear handle 9B, Weight is applied, the rear foot is lifted, and the board 1 is pitched so that the rear is raised and the front is lowered.

  Due to the pitching operation of the operator Q, the skeg tail portion 5 connected to the board 1 also rises, the shaft 6 swings up, and the propulsion plate 7 also swings up.

  And by repeating this operation, the area of the propulsion plate 7 is small but the system is efficient, and the board 1 (hull body) floated by the floater 3 is firmly propelled.

  Furthermore, by alternately and continuously performing the pitching operation of the operator, the shaft 6 horizontally connected via the skeg tail portion 5 connected to the board 1 bends up and down, and at the same time, the propulsion plate beyond that 7 swings up and down like the flapping motion of the wing and the board 1 propels.

  That is, due to the bending of the shaft 6, a phenomenon such as the movement of the body for moving the tail fins of the dolphin is added to the propulsion plate 7, and the propulsion plate 7 has a flapping motion like a penguin wing (flipper). In the same way as the world's fastest fish in the world, which swims at speeds exceeding 100 km / h, amplifies the propulsion with a mechanism similar to that of the tail billet.

  The pitching of the board 1 is set to be 10 degrees above and below the water surface because the propulsion plate 7 jumps out of the water surface if it goes up too much and the efficiency becomes worse if it goes down too much. In this setting, the operator Q steps on the handle 9A, 9B by 15 cm to the left and right and pulls up about 5 cm, the lowermost part of the skeg tail 5 is less than 40 cm, and the propulsion plate 7 is 50 cm Swing weakly. That is, the small motion is amplified, and the propulsion plate 7 is made to do a large work.

  However, in this case, it is difficult to move the propelling plate 7 having a large area even if the principle of the insulator is considered, so the area of the propelling plate 7 is suppressed as much as possible, and deflection is used to obtain propulsive force efficiently. ing. In addition, it is easy to accelerate and get on the waves, and it is possible to slide, so if a wave is coming from the sea, it is light by the propulsion plate 7 so that it is not necessary to carry out the pitching movement. It is also possible to come back on a wave, to the extent of pitching.

  Although FIG. 5 illustrates the pitching operation in a state where the operator Q stands on the board 1, the present invention is not limited to this. For example, the operator Q holds the handle 9A at both ends. , 9B may be seated on the rectangular plate 8 and pitching may be performed while sitting.

<Connection structure of board>
The board 1 enables vertical connection or horizontal connection via a connection device described later. That is, assuming that the operator Q pitches with a plurality of people, the board 1 has a configuration that can be connected vertically and horizontally.

  When a plurality of human powered boats are connected in the lateral direction, when the operator Q performs a pitching operation, the movement exactly the same as the movement of his / her boat is reflected in the other boats. You can hold your breath relatively easily.

  On the other hand, when a plurality of human powered boats are connected in the longitudinal direction, the boat of the operator Q raises the front and lowers the rear by pitching operation so that the rear of the front boat rises equally and the front of the rear boat Since the movement of lowering the same is reflected in the other boats, the movement of each boat will be different, and it will be difficult for the operators Q to hold their breaths together, and the operation will require skill.

  As a specific connection method, for example, a simple horizontal connection using a connection bar 20 (connection device) of a hanger structure is adopted. As shown in FIG. 7, in the connecting bar 20, both ends of the long arm 21 are bent inward toward each other into a U-shape to form a bent portion 22, and the upper surface of the bent portion 22 is outside. A hook 22A and a rope fastening hole 22B are provided. A pair of left and right sliders 23 is slidably attached along the arm 1 in the middle of the arm 21, and an inner hook portion 23A is provided thereon.

  When connecting two boards 1 horizontally, as shown in FIG. 7, both are arranged side by side, and the connecting bar 20 is placed under the recess 24 formed on both sides in the width direction of each board 1. While bending, the bent portions 22 at both ends of the arm 21 are placed in and engaged with the recessed portions 24 located outward with each other, and the left and right pair of sliders 23 between the arms 21 are moved away from each other. The inner hook portion 23A of the slider 23 is suspended in the recess 24 opposite to the inner surface.

  Then, one end of the rope 25 is tied and tied to the rope fastening hole 22B, temporarily wound around the inner hook 23A and forcibly pulled in, and then the other end of the rope 25 is tied and fixed to the outer hook 22A. Do. This connection is similarly applied to the rear side of the board 1. As a result, if one boat is pitched, the left and right boats will pitch similarly to the other boat, and the pitching of each other will be reflected.

  In addition, as another connection method, as shown in FIGS. 8 and 9, a clam cleat 26 formed by arc-shaped or arch-shaped teeth for engaging and locking the rope 25 is provided on the upper surface, and left and right A simple type lateral connection using a block-like packing cube 30 having centering recesses 27 and rope insertion through holes 28 on both sides is employed.

  When the two boards 1 are transversely connected, as shown in FIGS. 9A and 9B, first, the detachable connection attachment 36 is attached to the tip portion of each board 1, for example, the connection attachment 36 The rear end portion is attached by inserting and fitting the pair of left and right fitting projections 36 a into the pair of front end portions and left and right fitting holes 1 a of the board 1. On the front end side of the connecting attachment 36, two guide pipes 31 are present in parallel in parallel.

  Then, the two boards 1 are arranged side by side, and the connect pipe 33 with the fixed protrusion 33a on both ends is inserted into the guide pipe 31 so as to be passed between the boards 1 and attached so as to form a front and rear pair. At this time, the fixed protrusion 33 a engages with the locking hole 31 a formed in the guide pipe 31.

  Then, the center packing concave portion 27 of the packing cube 30 is aligned with the joint packing cube centering convex portion 34 formed on the mutually facing side surfaces of the coupling attachment 36, and the rope 25 is connected with the clam cleat 26 up. Along the rope guide gap 35 formed on the side of the cut in front of the attachment 36 and from below onward.

  Next, as shown in FIG. 9 (a), the rope 25 hanging down is wound upward from below the cut in front of the connection attachment 36 of the other boat along the rope induction gap 35.

  Next, as shown in FIG. 9 (b), the rope 25 coming out was pulled and adjusted so that the connecting device centering projection (not shown) fits into the centering recess 27. The rope 25 is sandwiched in the crumb cleat 26 at the top of the packing cube 30. This is performed before and after the board 1 to perform temporary connection.

  Since the temporarily connected connection attachment 36 is already firmly in a horizontal position, the connect pipe 33 set in the guide pipe 31 is pulled out, inserted into the guide pipe 31 of another boat, and the fixed ejector 33 of the connect pipe 33 is fixed. 33a is slid until it fits in the locking hole 31a of the guide pipe 31.

  In addition, since the packing cube 30 is provided with the guide groove 29 of the rope 25 at the corner as shown in FIG. 8, the positional displacement of the rope 25 can be achieved by arranging the rope 25 in the guide groove 29. Thus, temporary connection of the board 1 can be reliably performed.

  On the other hand, in the case of vertical connection, as shown in FIGS. 10 and 11, the clamp unit 40 clamps the two guide pipes 31 and fixes them with screws 41, and the other boat also has two guide pipes 31. It clamps and fixes with screw 41. The clamp unit 40 connecting the front and rear is hinge 42 at the center and has an over-swing prevention stopper 43 there. This is attached to two places of the right and left cuts of the guide pipe 31, respectively.

  As a result, by the pitching operation in which the operator Q's boat raises the front and lowers the rear, the movement that the rear of the front boat rises equally and the front of the rear boat falls equally is reflected in the other boats. . In addition, by the pitching operation in which the boat of the operator Q lowers the front and raises the rear, the movement that the rear of the front boat is lowered equally and the front of the rear boat is raised equally is reflected in the other boats.

  Further, the excessive swing prevention stopper 43 of the clamp unit 40 prevents the two boats from being broken in half.

  For example, as shown in FIG. 11A, in the state where both boards 1 are arranged horizontally, the stopper acts on the over-vibration preventing stopper 43 when it is broken in a V shape through the central hinge 42. There is no free state.

  As shown in FIG. 11 (b), in a state where both boards 1 are arranged in a mountain shape, it becomes horizontal via a central hinge 42, and a stopper acts on the lower side of the excessive swing prevention stopper 43.

  As shown in FIG. 11C, in a state where both boards 1 are arranged in a valley shape, the board is excessively broken into a V shape through a central hinge 42, and a stopper is provided on the upper side of the overvibration prevention stopper 43. Works.

Another Embodiment of the Present Invention
Next, another embodiment of the present invention will be described with reference to the drawings. The same components as those in the above-described embodiment will be denoted by the same reference numerals, and the detailed description thereof will be omitted or simplified.

  In this embodiment, as shown in FIG. 12 and FIG. 13, both feet are placed with the operator Q standing sideways along the traveling direction of the board 1 formed in a boat shape and the board 1. At the center of the tread plate 50, an operation pole 4 having the aforementioned grips 9A and 9B at its upper end is provided upright. A transmission mechanism 51 is provided to transmit the swinging movement of the tread plate 50 as the vertical swinging movement of the propulsion plate 7 disposed at the lower rear of the board 1. Moreover, the board 1 is formed in a boat shape.

  As shown in FIG. 12, in the transmission mechanism 51, one end side of the rectangular loop crank arm 52 is fixed to the upper side of the tread plate 50 which is pivotable upward by the lower support shaft 50A and curved upward. The skeg tail portion 5 is fixed to the other end side of the crank arm 52.

  As shown in FIG. 13, the operator Q stands sideways with respect to the traveling direction, holds the holding hands 9A and 9B on the operation pole 4, and places the foot on the footboard 50 on the board 1. And while pushing down the rear handle 9B in the direction of arrow A, while pulling up the front handle 9A, while applying weight on the foot of the rear and stepping on the tread plate 50 in the direction of arrow B, the crank arm by the principle of forceps. The skeg tail portion 5 connected to 52 descends in the direction of arrow C, and the shaft 6 connected horizontally swings down, and the propulsion plate 7 beyond that also swings down in the direction of arrow H and promotes.

  On the other hand, to raise the push plate 7 upward, while pushing the front handle 9A in the direction of the arrow E, while pulling up the rear handle 9B, weight is applied to the front foot and the rear foot is pulled up. When the tread plate 50 is depressed in the direction of arrow F, the skeg tail portion 5 connected to the crank arm 52 ascends in the direction of arrow G according to the principle of forceps, the shaft 6 connected horizontally swings up, and the propulsion plate beyond that 7 also propels up in the direction of arrow D. As described above, in this repetition, the area of the propulsion plate 7 is small but the system is efficient, and the board 1 (hull body) with less resistance is firmly propelled.

  FIG. 14 shows a modification of the other embodiment of the present invention. In this case, in the transmission mechanism 51, the support shaft 50A described above is disposed on the upper side of the tread plate 50. As shown in FIG. Then, an L-shaped bent end of the linear crank arm 52 is pivotally pivoted on the lower side of the tread plate 50 corresponding to the support shaft 50A. Further, the skeg tail portion 5 is pivotable back and forth substantially at its intermediate position by the support shaft 5A, and the upper end of the skeg tail portion 5 is pivotally pivoted to the rear end of the crank arm 52. Further, in the present modification, one shaft 6 is connected rearward from the skeg tail portion 5.

  As shown in FIG. 15, the operator Q stands sideways with respect to the traveling direction, holds the holding hands 9A and 9B on the operation pole 4, and places the foot on the footboard 50 on the board 1. And while pushing down the rear handle 9B in the direction of arrow A, while pulling up the front handle 9A, while applying weight on the foot of the rear and stepping on the tread plate 50 in the direction of arrow B, The skeg tail portion 5 connected to the crank arm 52 pivots in the direction of the arrows G-G 'with the support shaft 5A as the rotation axis according to the principle, the horizontally connected shaft 6 swings up, and the propulsion plate 7 beyond that also swings Swing up in the direction of arrow D and promote.

  On the other hand, in order to swing the propulsion plate 7 downward, while pushing down the front handle 9A in the direction of arrow E, while pulling up the rear handle 9B, weight is applied to the front foot and the rear foot is pulled up. When the tread plate 50 is stepped down in the direction of arrow F, the skeg tail 5 connected to the crank arm 52 swings in the direction of arrow C-C 'with the support shaft 5A as the rotation axis by the principle of the swing link and forceps. The horizontally connected shaft 6 swings down, and the propulsion plate 7 beyond that also swings down in the direction of arrow H and promotes.

  As described above, in this repetition, the area of the propulsion plate 7 is small but the system is efficient, and the board 1 (hull body) with less resistance is firmly propelled.

  FIG. 16 shows a modification of the propulsion plate 7. As shown in FIG. 16 (a), since the propulsion plate 7 can be easily applied with a force (propulsive force can be obtained) when it is swung down. It is formed in a substantially crescent shape with a wide width in plan view, and as shown in FIG. 16 (b), the left and right wings of the propulsion plate 7 are slightly inclined downward. Further, in the present modification, one shaft 6 is connected rearward from the skeg tail portion 5.

<Mounting structure of hydrofoil with increased lift>
Next, the mounting structure of the hydrofoil with increased lift will be described in detail with reference to FIGS. 17 to 19. The same components as those in the above-described embodiment will be denoted by the same reference numerals, and the detailed description thereof will be omitted or simplified.

  As described above, the board 1 is floated by the floater 3 to minimize the effects of wave resistance, frictional resistance, pressure resistance, etc., but the board 1 can be further reduced to reduce the water surface resistance. A swingable hydrofoil 60 is attached to the lower surface substantially at the center of the lower surface.

  As shown in FIG. 17, the hydrofoil 60 is connected by a shaft 61 in the forward and backward directions, and a bearing 61A is provided at the center of the shaft 61 so that it can be pivoted longitudinally in the forward direction. Are connected to the lowermost portion of the fins 62 attached in the vertical direction. As a result, the shaft 61 connecting the hydrofoil 60 back and forth blows in parallel with the flow of water received from the travel, and generates lift at a stable angle of attack without being affected by the hull propelled by pitching. Moreover, it also serves to suppress heaving caused by the vertical movement of the propulsion plate 7.

  As shown in FIGS. 18 (a), (b) and (c), the hydrofoil 60 has the upper surface inclined, the lower surface horizontal, and the cross-sectional area of the rear (discharge side) from the front (intake side) in the forward direction. A small flat cylindrical water flow accelerating box 63 and a horizontal plate (main wing) 64 having the same width as the box 63 and having a straight lower portion and a curved upper portion with respect to the traveling direction are provided.

  Further, the lower surfaces of the box 63 and the horizontal plate (main wing) 64 are connected in a straight line, pass through the inside of the box 63, and allow the accelerated water flow to pass through the upper portion of the main wing 64. Thereby, the static pressure difference between the lower portion and the upper portion of the main wing 64 is enlarged, and the lift is increased. In addition, although the lower surface of the box 63 is horizontal, the upper surface also has an elevation angle, so that a lift is also generated here (see FIG. 18C).

  That is, the flow of water passing through the inside of the box 63 is reduced, and at the same time the flow velocity is increased, a lower pressure is generated compared to the low speed part (Venturi effect) and the flow velocity is increased, and the pressure is decreased (Bernoulli's theorem). In addition, when the accelerated water flow passes along the curved upper portion of the horizontal plate (main wing) 64, the horizontal plate (main wing) 64 is drawn upward by a reaction when the water flow is drawn along the curved surface (Coanda Effect) and by lowering the pressure in the upper part by making the water flow velocity of the curved upper part of the horizontal plate (main wing) 64 greater than the water flow velocity in the horizontal lower part (Bernoulli's theorem) etc. The static pressure difference between the lower and upper portions of the 64 can be enlarged, and the lift force caused by the generation of circulation (round integral of the flow velocity) around the horizontal plate (main wing) 64 can be increased.

  As another modification, as shown in FIGS. 19 (a), (b) and (c), the water flow is accelerated in the direction of travel of the thin plate-like horizontal plate (main wing) 65 curved upward with respect to the direction of travel. A box 63 having the same width as the main wing 65 and having a shorter longitudinal side at the rear (discharge side) than the front (intake side) of the traveling direction is provided. The main wing 65 is connected to the center of the discharge side height of the box 63 at an appropriate angle of attack, and passes through the inside of the box 63 so that the accelerated water flow passes through the upper and lower portions of the main wing 65. This will increase the lift. Further, although the lower surface of the box 63 is horizontal, the upper surface also has an elevation angle, so that a lift is also generated here (see FIG. 19C).

  Thus, the hydrofoil 60 with increased lift is formed by the Venturi effect, Bernoulli's theorem, the Coanda effect, the Zhukovsky's theorem, etc. described above.

<Modification example when the water resistance on the bottom of the board is reduced>
In addition, as shown in FIGS. 20 (a) and 20 (b), the blocks are divided into blocks 70 in the form of bellows from the traveling direction so that air is accumulated on the bottom surface of the board 1. An elevation angle is given to the water contact portion of the convex portion 71 of the block 70, thereby reducing the resistance of the bottom of the ship by the lift accompanying the movement and the air mixed in the bottom. Moreover, in order to perform the operation which pitches smoothly, it will also suppress the suction of the water surface by the Coanda effect which generate | occur | produces on the curved bottom.

  Also, when the above system is applied to a general ship, air is jetted from the bottom of the bow. If air bubbles that flowed through the bottom of the ship fill the block 70 with air from the front, the overflowing air flows backward from the water-contacting portion of the convex portion 71 of the block 70 and stores air in the next block 70 and the bottom The air overflowing from the air flows along the convex portion 71 of the block 70 and flows backward.

  As a result, a layer of air is formed not only in the concave portion 72 of the block 70 but also in the convex portion 71, and the frictional resistance of the bottom of the ship can be reduced. In addition, if the jet of air utilizes a venturi effect and a pipe whose cross-sectional area of the discharge part is smaller than that of the suction part is used to accelerate the flow of water received from the progress, energy of bubble jet will be saved.

<Example of application>
(1) If the man-powered boat according to the present invention is all-mounted and provided with hooks (needed also for steering and reverse when multiple boards 1 are connected), it becomes a rowboat.
(2) If you connect the windsurfing sail to the handle pole joint of the man powered boat, it becomes windsurfing.
(3) As mentioned above, because you can ride on the waves, you can also enjoy the way you like surfing.
(4) Stand on the board 1, turn in the direction of travel, hold the rope with the handle from the motor boat, and pull it, it will be a water ski.

Water skis usually start from the water and are difficult to stand. However, according to the human power propulsion boat of the present invention, the beginner can easily enjoy the game from the surface of the water without falling down.
(5) Similarly, if you pull it sideways, it becomes a wakeboard.
(6) If you tie a rope to a leash cord bar and pull it with a motor boat, it becomes a so-called banana boat.
(7) When the lifesaver goes to rescue, he can pad on the surfing board as in the current case and get to the site earlier than going to the site, contributing to lifesaving.
(8) If it is easy to move on the deck with a fence, it will be a leisure boat like a swan boat in a lake etc.

  Also, the competition is held: As the board has the above characteristics, various competitions can be considered. However, since it is not designed exclusively for marine sports, this board can contribute to the spread of various marine sports.

  Time trials that compete for speed, of course, you can score the beauty, coolness, oddity (eg, pitching a board, etc.) of the pose of that rowing, or group battles can also be performed by connecting the boards 1.

  Since the boat has such a potential, it is possible to take into account the fastest of the human powered boat by the skill development of the pitching movement of the operator Q and the research and development of further efficiency improvement of the gear.

  In addition to the above, methods according to the above-described embodiment and the respective modifications may be combined as appropriate for use.

  In addition, although not illustrated one by one, the present invention is to be implemented with various modifications without departing from the scope of the invention.

  The present invention is widely used in various fields as a lift improvement mechanism of various vessels, a mechanism for suppressing the influence of wave resistance on vessels, friction resistance, pressure resistance, etc. in addition to use as a boat that can be propelled efficiently by human power. It is used.

Q: Operator 1 ... Board 1a ... Mating hole 2 ... Strap 3 ... Floater 4 ... Operation pole 5 ... Skegtail section 6 ... Shaft 7 ... Propulsion board 8 ... Rectangular board 9A ... Handhold 9B ... Handhold 10 ... Mounting jig 11 Rail 11a Groove 12 Slider 13 Bolt 14 Base 14a Hinge 14b Long groove 15 Holder 15a Recess 15b Support shaft 20 Link bar 21 Arm 22 Bent portion 22A Outer hook portion 22B Rope Holes for fastening 23: Slider 23A: Inner hook 24: Recess 25: Rope 26: Clamcrete 27: Recess for centering 28: Through hole for rope insertion 29: Guide groove for rope 25 30: Packing cube 31: Guide pipe 31a: Locking hole 33: Connect pipe 33a: Fixed wart 34: Joint packing cube for centering Convex part 35: Rope induction gap 36: Attachment for connection 36a: Mating projection 40: Clamping unit 41: Screw 42: Hinge 43: Anti-swing stopper 50: Foot plate 50A: Support shaft 51: Transmission mechanism 52: Crank arm 60 ... Submersible wing 61 ... shaft 61A ... bearing 62 ... fin 63 ... box 64 ... horizontal plate (wing)
65: Horizontal plate (wing)
70: block 71: convex portion 72: concave portion

According to the first aspect of the present invention, there is provided a board having a pair of straps for inserting a foot in a state where the operator stands sideways, an operation pole provided on the board, and a lower rear portion of the board. In a man-powered propulsion boat comprising a fin-like skeg tail portion extending downward and rearward and a propulsion plate connected to the lowermost portion of the skeg tail portion via a shaft, the operation pole is provided at its upper end in the traveling direction of the board And a handle is attached to both ends of the rectangular plate, and the operation pole can be tilted in a direction orthogonal to the traveling direction of the board. , Solved the problems mentioned above.
Further, according to the invention of claim 2, according to the present invention, there is provided a board provided with a pair of straps for putting a foot in a state where the operator stands sideways, an operation pole standing on the board, and a back of the board. In the man-powered propulsion boat provided with a fin-like skeg tail portion extending downward and rearward at the lower portion and a propulsion plate connected to the lowermost portion of the skeg tail portion via a shaft, the operation pole is provided at the upper end of the board. A rectangular plate of a predetermined length arranged along the traveling direction, with a handle attached to both ends of the rectangular plate, and a swingable hydrofoil at the approximate center of the lower surface of the board, The hydrofoil has a flat cylindrical water flow acceleration box whose upper surface is inclined, the lower surface is horizontal, and the cross-sectional area is smaller at the rear (discharge side) than at the front (intake side) in the forward direction; Width, in the direction of travel Lower linear, upper than be provided with horizontal plate curved upward and (wing), was to solve the problems described above.
Further, according to the invention of claim 3 according to the present invention, there is provided a board provided with a pair of straps for putting a foot in a state where the operator stands sideways, an operation pole erected on the board, and a back of the board. In the man-powered propulsion boat provided with a fin-like skeg tail portion extending downward and rearward at the lower portion and a propulsion plate connected to the lowermost portion of the skeg tail portion via a shaft, the operation pole is provided at the upper end of the board. A rectangular plate of a predetermined length disposed along the traveling direction is provided, and the handle is attached to both ends of the rectangular plate, and the lower surface of the board is bellows-like from the traveling direction so that air is accumulated. The above-mentioned problem was solved by providing a block and providing an elevation angle so as not to be too resistant to the water contact portion of the block.

According to the human powered boat according to the first to third aspects of the invention, the operator stands sideways on the board so that the left and right legs follow the traveling direction of the board, and puts the legs in the pair of straps on the board By holding the front and back handles of the operation pole with both hands, the board can be propelled through the pitching operation of the operator.

The invention of claim 4 according to the present invention solves the above-mentioned problems by forming the board so as to have its own buoyancy and to be inclined or curved in an up and down shape.

According to the human powered boat according to the fourth aspect of the present invention, it is possible to minimize the influence of wave resistance, frictional resistance, pressure resistance, etc. on the board by its own buoyancy, and simultaneously sink the board in the traveling direction at the same time It can be suppressed.

Invention of Claim 5 which concerns on this invention solved the subject mentioned above by the board providing the floater on the lower surface.

According to the human powered boat according to the fifth aspect of the invention, since the floater provided on the lower surface of the board maintains the buoyancy, the effects of wave resistance, frictional resistance, pressure resistance and the like on the board can be further suppressed.

The invention of claim 6 according to the present invention is characterized in that the pair of straps are disposed at a predetermined interval along the traveling direction of the board and are movable in the direction along the traveling direction of the board. Solved the problems.

According to the human powered boat according to the sixth aspect of the present invention, the distance between the pair of straps can be easily adjusted according to the distance between the operator's individual feet and adjusted to the distance between the individual feet. it can.

The invention according to claim 7 according to the present invention is provided with a mounting jig for fixing the operation pole in the advancing direction and attaching the operation pole so as to be movable in the lateral direction, and in the state where the mounting jig is removed from the operation pole The operating pole is tiltable in a direction perpendicular to the traveling direction of the board, and in a state where it is attached to the operating pole, the holder has a holder that prevents tilting of the operating pole in the direction orthogonal to the traveling direction of the board. Solved the problems.

According to the human powered boat according to the seventh aspect , tilting and blocking of the operation pole can be selected by the mounting jig and the holder.

According to an eighth aspect of the present invention, the operator stands on the board sideways so that the left and right legs follow the traveling direction of the board, and puts the legs in a pair of straps on the board to front and rear of the operation pole. The above problem is solved by the board propelling through the operation of holding the holding hand with both hands and pitching the operator.

According to the man-powered boat according to the eighth aspect , it is possible to provide a man-powered boat that can speed up while reducing the feeling of crawling.

According to a ninth aspect of the present invention, in the pitching operation of the operator, the operator pulls the rear handle while pushing the front handle of the board while putting weight on the front foot. At the same time, the foot on the back side is pulled up, the depression on the front side of the board and the lifting action on the back side of the board, the action to pull up the front hand while depressing the hand on the back side of the board, The above-described problem is solved by simultaneously and alternately pulling up the back side of the board and pulling up the front side of the board by performing an operation of pulling up the front foot at the same time while applying weight.

According to the man-powered boat according to the ninth aspect , the propulsive force can be easily obtained by the reciprocal movement (principle of forceps) of the weight (center of gravity) by the pitching motion of the operator.

According to the invention of claim 10, according to the invention as claimed in claim 10 , when the operator's pitching operation causes the shaft connected horizontally via the skeg tail portion connected to the board to bend up and down, at the same time, the propulsion plate further follows the wing. The above-mentioned problem was solved by swaying up and down like a fluttering motion and propelling the board.

According to the human powered boat according to the tenth aspect of the present invention, bending of the shaft causes a phenomenon such as body movement when moving the tail fin of the dolphin on the propulsion plate, and the propulsion plate is made of penguins A flapping movement like a wing (flipper) takes place, and the propulsion can be amplified with a mechanism similar to that of the tail fish of the world's fastest fish swimming in the world at speeds exceeding 100 km / h.

The invention of claim 11 according to the present invention solves the above-mentioned problems by forming the propulsion plate on the lower surface side of the board in a substantially crescent shape that is wide in plan view.

According to the human power propulsion boat pertaining to the eleventh aspect , the area of the propulsion plate can be reduced, and the propulsion can be efficiently obtained by utilizing the bending.

The invention of claim 12 according to the present invention solves the above-mentioned problems by allowing the board to be vertically or horizontally connected via a connecting device.

According to the human powered boat according to the twelfth aspect of the present invention, it is possible to easily provide a human powered boat that can be enjoyed by a plurality of people by connecting the plurality.

According to a thirteenth aspect of the present invention, there is provided a board which is disposed along the traveling direction of the board, and includes a long tread board for swinging the legs while the operator is standing sideways, An operation pole erected at the center of a long tread plate, a propulsion plate disposed at the lower rear of the board, and a transmission mechanism for transmitting the swinging movement of the elongated tread plate as the vertical swing movement of the propulsion plate In the man-powered boat equipped with the operation pole, at the upper end thereof, the operation pole is provided with a rectangular plate of a predetermined length arranged along the traveling direction of the board, and the handle is attached to both ends of the rectangular plate Yes,
The board is provided with a swingable hydrofoil substantially at the center of the lower surface of the board, the upper surface is inclined, the lower surface is horizontal, and the cross section at the rear (discharge side) than the forward direction (intake side) And a horizontal plate (main wing) curved at the upper side with a straight line at the lower part and an upper part at the same width as the box. Solved the problems mentioned above.

According to the human powered boat according to the thirteenth aspect of the present invention , the stepping motion of the pedal type footboard by the operator can be efficiently transmitted to the propulsion plate via the transmission mechanism as the up and down rocking motion, so that the propulsion force can be easily achieved. You can get

In addition, the flow rate of the water passing through the box is reduced, and at the same time the flow velocity is increased, the pressure is lowered due to the generation of a lower pressure (venturi effect) than the low speed portion (Venturi effect) Theorem).

Invention of Claim 14 which concerns on this invention solved the subject mentioned above by connecting so that the lower surfaces of the said box and a horizontal plate (main wing | blade) may become a straight line.

According to the manual propulsion boat according to the fourteenth aspect , the flow resistance in the traveling direction can be minimized as much as possible on the lower surface of the box and the horizontal plate (main wing).

The invention of claim 15 according to the present invention solves the above-described problem by connecting the horizontal plate (main wing) to the center of the rear (discharge side) of the box at an arbitrary elevation angle.

According to the manual propulsion boat according to the fifteenth aspect , since the horizontal plate (main wing) has an angle of attack, when the accelerated water flow passes along the curved upper portion of the horizontal plate (main wing), the water flow is curved Due to the reaction when being pulled along, the horizontal plate (main wing) is pulled upward (Coanda effect), and the circulation of the turning of the horizontal plate (main wing) (circulation integral of the flow velocity) (Jukovsky's theorem) etc. It is possible to generate lift efficiently.

According to a sixteenth aspect of the present invention, the hydrofoil is connected by a shaft in the forward and backward directions, and a bearing is provided at the center of the shaft so as to be able to rotate longitudinally in the forward direction. The problems described above are solved by connecting to the lowermost part of the vertically attached fins.

According to the human powered boat according to the sixteenth aspect of the present invention , the shaft connecting the hydrofoil back and forth is parallel to the water flow received from the traveling, and lifts at a stable attack angle without being affected by the hull propelled by pitching. Can occur. In addition, it also serves to suppress heaving caused by the vertical movement of the propulsion plate.

According to a seventeenth aspect of the present invention, there is provided a board provided with a long tread plate which is disposed along the traveling direction of the board and which swings the legs while the operator is standing sideways, An operation pole erected at the center of a long tread plate, a propulsion plate disposed at the lower rear of the board, and a transmission mechanism for transmitting the swinging movement of the elongated tread plate as the vertical swing movement of the propulsion plate In the man-powered boat equipped with the operation pole, at the upper end thereof, the operation pole is provided with a rectangular plate of a predetermined length arranged along the traveling direction of the board, and the handle is attached to both ends of the rectangular plate Yes,
The lower surface of the board is provided with a bellows-like block from the traveling direction so that air can be collected, and an elevation angle is given to a portion of the block that contacts the water so as not to be too resistive, thereby solving the above-mentioned problem. did.

According to the human powered boat according to the seventeenth aspect of the present invention, it is possible to reduce the resistance of the bottom of the boat by the lift force accompanying the traveling and the air mixed in the bottom. Moreover, in order to make pitching smooth, it will also suppress the suction of the water surface by the Coanda effect which generate | occur | produces on the curved bottom.

Claims (16)

  A board having a pair of straps for inserting the foot while the operator is standing sideways, an operation pole standing on the board, and a fin-like skegtail portion extending downward and rearward at the lower rear of the board In a man-powered propulsion boat comprising: a propulsion plate connected to the lowermost portion of the skeg tail portion via a shaft, the operation pole is disposed at an upper end thereof at a predetermined length along the traveling direction of the board A man-powered boat comprising: a rectangular plate; and a handle attached to both ends of the rectangular plate.   The man-powered boat according to claim 1, wherein the board is formed to be buoyant by itself and to be inclined or curved upward and downward.   The man-powered boat according to claim 1 or 2, wherein the board has a floater on the lower surface.   The man-powered boat according to claim 1, wherein the pair of straps are arranged at predetermined intervals along the traveling direction of the board and movable in the direction along the traveling direction of the board.   The man-powered boat according to claim 1, wherein the operating pole is tiltable in a direction perpendicular to the traveling direction of the board.   On the board, the operator stands sideways so that the left and right legs follow the traveling direction of the board, puts the legs into a pair of straps on the board and grasps the handle in front of and behind the operation pole with both hands. The man propelled boat of claim 1, wherein the board propels through a pitching action.   In the operator's pitching operation, the operator simultaneously raises the rear handle while pushing down the front handle of the board and lifts the rear leg while putting weight on the front leg. Depressing the front of the board and pulling up the back of the board, raising the front handle while pushing down the rear handle of the board, and lifting the front leg while putting weight on the rear foot The man-powered boat according to claim 6, wherein the push on the back side of the board and the pulling up on the front side of the board are performed alternately and continuously.   The operator's pitching motion causes the shaft connected horizontally through the skeg tail connected to the board to bend up and down, while at the same time the pusher plate swings up and down like the flapping motion of the wing and the board The man-powered boat according to claim 6 or 7, which is propelled.   9. The man-powered boat according to claim 1, wherein the propulsion plate on the lower surface side of the board is formed in a substantially crescent shape having a wide width in plan view.   The man-powered boat according to any one of claims 1 to 9, wherein the board enables vertical connection or horizontal connection via a connection device.   A board provided with a long tread board which is arranged along the traveling direction of the board and which swings both feet while the operator is standing sideways, and is erected at the center of the long tread board In a man-powered propulsion boat comprising an operating pole, a propulsion plate disposed at the lower rear of the board, and a transmission mechanism for transmitting swinging of the long tread plate as vertical movement of the propulsion plate The pole is provided at its upper end with a rectangular plate of a predetermined length arranged along the traveling direction of the board, and has a handle attached to both ends of the rectangular plate.   The board is provided with a swingable hydrofoil substantially at the center of the lower surface of the board, the upper surface is inclined, the lower surface is horizontal, and the cross section at the rear (discharge side) than the forward direction (intake side) A flat cylindrical water flow accelerating box having a smaller size, and a horizontal plate (main wing) curved in the upper side with the straight line in the lower part and the upper part in the same width as the box and having the same width. The man-powered boat according to any one of 11.   The man-powered boat according to claim 12, wherein lower surfaces of the box and the horizontal plate (main wing) are connected in a straight line.   The man-powered boat according to claim 12, wherein the horizontal plate (main wing) is connected to the center of the rear (discharge side) of the box at an arbitrary elevation angle.   The hydrofoil is connected by a shaft in the forward and backward directions, and a bearing is provided at the center of the shaft so as to be able to rotate longitudinally in the forward direction, and the bearing is connected to the lowermost part of the fin vertically attached from the center of the lower surface The man-powered boat according to claim 12, wherein   13. The bellows-like block is provided on the lower surface of the board in the traveling direction so that air is accumulated, and an elevation angle is given to a portion of the block in contact with the water so as not to be too resistive. Man-powered boat described in.

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