JP4563910B2 - Water vehicle - Google Patents

Description

  The present invention relates to an improvement in a water vehicle including a propulsion device and a handle post in a board-like boarding section represented by a surfing board.

It is known that a hull that has no or almost no dry surface such as a surfing board has the following characteristics.
If the occupant stands near the center of the board or moves slightly toward the bow and moves the center of gravity toward the bow, the bottom surface will be in a substantially horizontal state, which will be advantageous for sliding, and the pedestal will be faster.
Conversely, if the occupant stands slightly rearward and moves the center of gravity toward the stern, the bottom surface is more susceptible to resistance, and it is easier to turn in combination with the edge effect when the board is tilted left and right. .

The surfing board described above is a simple vehicle that uses wave energy as a driving force, that is, a water vehicle that does not include a propulsion device.
However, with the diversification of vehicles, a vehicle having a configuration in which a propulsion device with an engine is provided on a board has been proposed (for example, see Patent Document 1).
Japanese Utility Model Publication No. 48-38600 (Fig. 1)

  In FIG. 1 of Patent Document 1, reference numeral 1 is a surfboard, reference numeral 2 is a flexible wire, reference numeral 3 is a grip, reference numeral 4 is a power source such as an engine, reference numeral 7 is a control cable, and reference numeral 8 is an accelerator lever.

  The occupant rides on the surfboard 1, holds the grip 3, travels on the water with the flexible wire 2 being tensioned, and adjusts the traveling speed by controlling the accelerator lever 8 as necessary. Since it is equipped with a power source 4 such as an engine, it is possible to enjoy gliding even on calm water where no wave energy can be expected.

  And since the flexible wire 2 can endure tension | pulling, it prevents that a passenger | crew falls down backward and exhibits the effect | action which stabilizes a passenger | crew's attitude | position.

Since the flexible wire 2 is literally a string member having no rigidity at all, it cannot resist an external force other than the tension direction.
On the other hand, as described above, the occupant needs to change the standing position in order to exhibit the characteristics of a hull with little or no dry drought.

  However, if the standing position is changed to near the center or forward, the flexible wire 2 is bent, and a reaction force for maintaining the posture of the occupant cannot be generated. In addition, occupants may bend and balance. Even when the posture is changed in this way, the flexible wire 2 is bent and a reaction force for maintaining the posture of the occupant cannot be generated.

  Even if the flexible handle is replaced with a flexible body that is harder to bend than the wire, if the force toward the fixed end is applied to the free end of the handle post, the handle post will bend and the free end will become the fixed end. The reaction force (resistance) cannot be obtained.

  An object of the present invention is to provide a structure capable of obtaining a reaction force for maintaining a balance when a passenger changes posture or standing position in a powered water vehicle.

The invention according to claim 1, the board-shaped boarding portion, provided with a propulsion device having a driving source, a watercraft which can be run by the action of the propulsion apparatus, the boarding section, flexible portion and the occupant A handle post including a grip portion to be gripped is attached so that an occupant can swing the upper portion of the handle post with respect to the embarkation portion while holding the grip portion. In a water vehicle equipped with a rigid vertical member ,
The boarding part is a windsurfing board provided with a windsurfing mast support, and a lower end of the handle post is attached to the windsurfing mast support .

  In the invention according to claim 2, the propulsion device is swingably mounted on the boarding portion, and an interlocking mechanism for changing the propulsion direction of the propulsion device by the tilting action of the boarding portion is interposed between the boarding portion and the propulsion device. It was made to be characterized.

In the invention according to claim 3, c India surfing board is provided with a groove, characterized in that to be able to mount the lower end of the handle post into the groove.

In the invention according to claim 1, the handle post is constituted by a longitudinal member that is at least partially, preferably most of which is rigid.
In the present invention, since the handle post is rigid, even if a force toward the fixed end is applied to the free end of the handle post, the handle post does not have to bend and the free end does not have to worry about approaching the fixed end. As a result, a reaction force (resistance) that contributes to balancing the occupant is obtained.

  Note that the handle post includes a flexible portion. Since the position of the grip portion can be freely moved by the bending action of the flexible portion, the occupant can change the standing position and posture while holding the grip portion.

That is, the movement range of the occupant is widened, and the ship maneuvering range can be expanded accordingly.
Therefore, according to the first aspect, it is possible to provide a structure for obtaining a reaction force for maintaining a balance when the occupant changes the posture or the standing position in the powered water vehicle.
Further, in the invention according to claim 1, the boarding part is a windsurfing board provided with a windsurfing mast support, and the lower end of the handle post is attached to the windsurfing mast support.
Since existing windsurfing mast supports are used, there is no need to modify the windsurfing board. Therefore, a water vehicle can be obtained at a lower cost.

In the invention according to claim 2, the propulsion device is swingably mounted on the boarding portion, and an interlocking mechanism for changing the propulsion direction of the propulsion device by the tilting action of the boarding portion is interposed between the boarding portion and the propulsion device. I let you.
When the boarding section is tilted during self-propelled driving, the propulsion direction of the propulsion device can be changed in conjunction with the tilt, so that a large steering effect can be obtained.

In the invention according to claim 3, c India surfing board is provided with a groove, which make it possible to attach the lower end of the handle post into the groove.
Since the groove provided in the windsurfing board is utilized, the handle post can be easily attached to the boarding portion, and a water vehicle can be obtained at low cost.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. In the following description, the left and right refer to the direction viewed from the passenger.

  FIG. 1 is an exploded perspective view of a water vehicle according to the present invention. A water vehicle 10 has, for example, a board-like boarding part 20 typified by a surfing board, which has a groove 21, and a post support part 60 in the groove 21. And a propulsion device 50 represented by an outboard motor at the stern. The propulsion device 50 may be provided directly on the stern of the boarding unit 20, but in this embodiment, the propulsion device 50 is attached via the frame body 40.

The post support portion 60 can be formed integrally with the handle post 30, but in this embodiment, the post support portion 60 is formed as a separate part in consideration of the attachment to the groove 21 and the like.
Details of the post support section 60 will be described later.

The handle post 30 includes a vertical member 31 having bending and bending rigidity, such as an aluminum alloy pipe, a similar horizontal member 32 horizontally provided on the upper end of the vertical member 31, and left and right provided at both ends of the horizontal member 32. This is a T-shaped member composed of the grip portions 33 and 34. Note that the vertical member 31 may be made of hard resin.
Reference numeral 23 denotes a storage groove of a movable stabilizer (keel).

  The frame 40 includes left and right longitudinal pipes 41L and 41R (L is a suffix indicating left and R is right. The same shall apply hereinafter), a cross member 42 connecting these longitudinal pipes 41L and 41R, This is a structure for mounting the propulsion device 50, which includes a floor plate 43 passed to the longitudinal pipes 41L and 41R and an end plate 44 passed to the rear ends of the longitudinal pipes 41L and 41R.

  Reference numeral 45... (... indicates a plurality. The same applies hereinafter) is a suction cup as a fixing means, and the frame body 40 can be adsorbed to the board-like boarding portion 20. If the suction cups 45 are used, there is no worry of damaging the boarding part 20.

A connecting plate 85 as a propulsion device mounting plate is swingably attached to the end plate 44 via a rotary shaft 47 which is a horizontal shaft extending in the front-rear direction of the boarding portion. Then, the propulsion device 50 and the frame-like float support 48 are attached to the connecting plate 85 so as to be swingable. As a result, the propulsion device 50 can swing around the horizontal axis. Further, the float support 48 is provided with left and right floats 49L and 49R and a propulsion device 50 is attached.
In addition, between this propulsion apparatus 50 and the boarding part 20, the interlocking mechanism 90 which changes the propulsion direction of the propulsion apparatus 50 by the inclination effect | action of the boarding part 20 is interposed. Details of the interlocking mechanism 90 will be described later.

  The propulsion device 50 includes an uppermost engine cover 50a, an under cover 50b below this, an extension case 50c extending downward and extending below, and a gear case 50d provided below the upper cover 50a, 50b. Accommodates an engine, a fuel tank, and the like, and a drive shaft passes through the extension case 50c to drive a propeller 51 provided toward the rear of the gear case 50d.

  In addition, a stern bracket 52 is provided so as to protrude to the front side of the extension case 50c.

  FIG. 2 is a cross-sectional view of the post support portion according to the present invention. The post support portion 60 includes a dish-shaped base 61, a screw 62 penetrating the dish-shaped base 61, and a tip (lower end) of the screw 62. From the square nut 63 to be screwed, the boss 64 standing at the center of the dish-shaped base 61, the column rubber 65 standing on the boss 64, the upper block 66 attached to the upper part of the column rubber 64, and the upper block 66 An extended cylinder 67, a metal block 68 built in the cylinder 67, recesses 69 and 69 opened in the metal block 68, spring members 71 and 71 and lock pins 72 housed in these recesses 69 and 69 , 72.

In the figure, the lock pin 72 is in the most protruding state. When the lock pin 72 is artificially pushed, the spring members 71 and 71 contract and enter (return) the recesses 69 and 69. That is, the lock pin 72 can be moved forward and backward.
Therefore, the vertical member 31 indicated by the solid line is moved to the position of the imaginary line as shown by the arrow, and is covered with the cylindrical body 67, and the lock pins 72 and 72 are fitted into the through holes 35 and 35 provided in the vertical member 31. Then, the vertical member 31 can be fixed to the cylindrical member 67 by the double tube structure of the vertical member 31 and the cylindrical member 67 and the locking action of the lock pins 72 and 72.

  A groove 21 having a T-shaped cross section is provided in the boarding portion 20. A hole through which the square nut 63 can be passed is provided at both ends or one end of the groove 21. The square nut 63 is accommodated in the groove 21 through this hole. Then, the screw 62 is screwed into the square nut 63. At the end of the screwing operation, the square nut 63 strongly presses the wall 73 of the T-shaped groove 21. As a result, the dish-shaped base 61 can be fixed to the boarding portion 20. By loosening the screw 62, the dish-shaped base 61 can be moved in the front and back direction of the drawing.

  The cylindrical rubber 65 interposed between the boss 64 and the upper block 66 is an elastic deformable material (for example, urethane elastomer) having an appropriate hardness. When a bending force of a certain level or more is applied, the vertical member 31 side is inclined in any direction of 360 °, such as left and right, front and rear, with respect to the dish-shaped base. However, some resistance is generated in conjunction with the tilt.

  The cylindrical rubber 65 interposed between the boss 64 and the upper block 66 is an embodiment of the flexible portion 70 of the present invention. The structure of the flexible portion 70 is a two-joint joint that uses a cylindrical rubber as an iron-array-shaped shaft with both spheres, a boss 64 and an upper block 66 as a cup, and generates a frictional force between the sphere and the cup. Good. A so-called universal joint can also be used.

  FIG. 3 is a perspective view of the post support portion according to the present invention, and the screws 62 and 62 are provided at positions where there is no fear of interfering with the boss 64. Further, an eye plate 74 is formed integrally with the boss 64, an eye plate 75 is formed integrally with the upper block 66, and a string 76 is stretched between the eye plate 74 and the eye plate 75.

  FIG. 4 is a sectional view around the rotary shaft according to the present invention, and the rotary shaft 47 is attached to the end plate 44 via bearings 81 and 81 and presser fittings 82 and 82 so as to be relatively rotatable. A cylinder 83 is fitted to the tip of the rotary shaft 47, and the cylinder 83 is fixed to the rotary shaft 47 with a bolt 84. Such a cylinder 83 is fixed by a bolt 86 to a plate-like connecting plate 85 fixed to the upper end of the float support 48.

  The connecting plate 85 is a member on which the stern bracket 52 is hung. A vertical steering shaft 87 passes through the stern bracket 52. In addition, the outer peripheral part of the extension case 50c may be configured to function as a swivel shaft, and the left and right swing centers of the extension case 50c may be the steering axis.

  With the above configuration, the propulsion device 50 can be steered about the axis a. Further, the frame body 40 (embarkation part 20) side can be rolled around the axis b with reference to the propulsion device 50 side.

  Furthermore, the present invention includes an interlocking mechanism 90 that steers the propulsion device 50 by the tilting action of the boarding portion 20 between the boarding portion 20 and the propulsion device 50. Hereinafter, the structure of the interlocking mechanism 90 will be described in detail.

  The interlocking mechanism 90 includes a support plate 91 erected from the tip of the cylinder 83, a support pin 92 protruding forward (left side in the figure) from the upper portion of the support plate 91, and a rocker provided on the support pin 92 so as to be swingable. A movable lever 93, a drive pin 94 provided below the swing lever 93 (lower position than the support pin 92), a drive plate 95 extending from the end plate 44 and fitted to the drive pin 94, and a swing lever 93 is composed of a long hole 96 provided in the upper portion of 93 and a steering pin 97 extending from the propulsion device 50 and inserted into the long hole 96.

  If the end plate 44 rotates around the axis b while the rotary shaft 47 is stationary, the drive plate 95 moves. As the drive plate 95 moves, the swing lever 93 swings around the support pin 92. By this swinging, the swing lever 93 rotates the propulsion device 50 around the axis a via the steering pin 97 to change the propulsion direction.

  FIG. 5 is an explanatory view of the operation of the interlocking mechanism according to the present invention, and the propulsion device 50 is maintained in a substantially vertical posture with respect to the water surface by the action of the floats 49L and 49R. On the other hand, the boarding part 20 can be tilted left and right at the will of the passenger.

  Suppose that when viewed from the front, the boarding part 20 is tilted clockwise, that is, the boarding part is tilted to the left. The frame 40 and the end plate 44 are tilted together with the boarding portion 20. As a result, the drive plate 95 attached to the end plate 44 moves in a circular arc clockwise around the boarding portion 20 in FIG. 5, and the drive pin 94 also moves to the right in the drawing.

  By the action of the drive pin 94, the swing lever 93 swings counterclockwise about the support pin 92, and the steering pin 97 moves to the left in the figure. As a result, the propulsion device 50 provided at the stern and behind the center of gravity of the surface vehicle turns to the right, so that the thrust swings the stern to the right, and the surface vehicle turns left.

That is, if the boarding portion 20 is tilted during self-propelled driving, the propulsion direction of the propulsion device 50 can be changed in conjunction with this tilting, so that a large steering effect can be obtained.
In the present invention, since at least a part of the handle post is formed of a rigid vertical member, when the posture (occupant's body) is shaken small, a reaction force can be obtained and balance can be maintained. Further, when the posture is largely changed, such as movement, it can be followed by the flexible portion on the fixed end side.

Returning to FIG. 1, if the boarding portion 20 is a windsurfing board having a groove 21, the lower end of the handle post 30 could be attached to the groove 21.
Since the groove 21 of the existing windsurfing board can be applied as it is, a water vehicle can be obtained at low cost.

Further, the post support 60 can also utilize a windsurfing mast support that is standard on a windsurfing board.
In this case, since it is not necessary to prepare the post support 60, a water vehicle can be obtained at a lower cost.
However, it is possible to prepare the post support 60 separately from the standard windsurfing mast support and use it.

The driving source of the propulsion device 50 other engine may be an electric motor.

  Further, the shape of the handle post in claim 1 may be a portal post or I-shaped post in addition to the T-shaped post described in the embodiment, and is not particularly limited. Further, it is possible to integrally form a structure corresponding to the post support at the lower portion of the handle post.

  The interlocking mechanism in claim 2 is not limited to the configuration described in the embodiment, and the configuration is arbitrary as long as the mechanism changes the propulsion direction of the propulsion device by the tilting action of the boarding portion.

  The present invention is suitable for a powered surfing board.

1 is an exploded perspective view of a water vehicle according to the present invention. It is sectional drawing of the post support part which concerns on this invention. It is a perspective view of the post support part concerning the present invention. It is sectional drawing around the rotary axis | shaft which concerns on this invention. It is action | operation explanatory drawing of the interlocking mechanism which concerns on this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Water vehicle, 20 ... Boarding part, 21 ... Groove, 23 ... Windsurfing mast support, 30 ... Handle post, 33, 34 ... Grip part, 50 ... Propulsion device, 60 ... Post support, 65 ... Cylindrical rubber , 70 ... flexible part, 90 ... interlocking mechanism.

Claims (3)

A board-like boarding part is equipped with a propulsion device having a drive source, and is a water vehicle that can be driven by the action of this propulsion device ,
A handle post including a flexible part and a grip part gripped by the occupant is attached to the boarding part so that the upper part of the handle post can be swung with respect to the boarding part in a state where the occupant holds the grip part. In addition, the handle post is at least partially provided on a water vehicle with a rigid longitudinal member .
The boarding part is a windsurfing board provided with a mast support for windsurfing, and a lower end of the handle post is attached to the mast support for windsurfing . The propulsion device, the swingably mounted on the boarding section, between the boarding unit and the propulsion device, it is interposed an interlocking mechanism for converting the propulsion direction of the propulsion device at a slope action of the boarding portion The water vehicle according to claim 1. Before Kiu India surfing board is provided with a groove, according to claim 1 or claim watercraft of claim 2, wherein it has to be able to mount the lower end of the handle post into the groove.

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