JP3048492B2 - Watercraft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fin type oar for watercraft propulsion and a watercraft.

[0002]

2. Description of the Related Art Conventionally, various watercrafts have been proposed for various purposes. Power watercraft and sail-powered watercraft have certain advantages, but they also have drawbacks. Self-propelled watercraft can provide greater satisfaction than either powered or sailed watercraft in many respects.

[0003]

However, typical conventional self-propelled watercraft, such as canoe,
Outrigger canoes, kayaks, and sea kayaks have several disadvantages. There is a particular need for small self-propelled watercraft that can be used in a variety of situations, such as shallows and straits where seaweeds are dense, and open waters such as oceans or oceans. However, conventional watercraft used in the ocean and providing a high degree of stability and speed were propelled by large numbers of people and were rather large.

It is a primary object of the present invention to provide an improved miniature self-propelled watercraft that can be used in a wide variety of seawater areas and under such conditions.

It is yet another object of the present invention to provide an improved outrigger-type, lightweight, self-propelled watercraft that is propelled by a single fin, such as an oar.

[0006] When a watercraft is powered by a single fin, such as an oar, the oar usually includes one oar element having one fin, the fins of which are pivotally supported at the outer ends, and By turning back and forth in All Rock, it moves like a fish tail. The fin turning amount for the all element determines the all efficiency during operation. Very often it is desired to make some adjustment to the fin's turning momentum. However, the operator stopped the watercraft,
It would be inconvenient if the fins had to move to the rear end of the all-element to make the adjustment.

It is therefore a further object of the present invention to provide an improved structure in which the fin can be swiveled by the all handle during the all operation.

It has also been found that the efficiency of this type of oar can be greatly improved if the only part of the oar that immerses in the water in which the watercraft is running is fin-shaped blades. Therefore, the purpose of this invention is
It is an object of the present invention to provide an improved oar including a configuration in which an oar portion other than a fin does not sink into water in which the oar is operating.

As is well known, conventional boats with oars can row in either forward or reverse directions. However, in the case of the above-mentioned type of fin-shaped oar, it is not possible to row in the backward direction with the conventional structure.

It is still another object of the present invention to provide an improved fin type oar in which a fin can be turned between a forward rowing position and a backward rowing position by a handle during an all operation.

There is a particular advantage to this type of all operation when an all lock is mounted on a carriage slidably supported across the watercraft. This type of configuration is very efficient and results in a very effective rowing. However, in the conventional structure, the operator had to row the oar in all directions in order to operate the oar.

Accordingly, it is a further object of the present invention to provide an improved configuration in which the rowing force of the operator in one direction of movement is reduced by incorporating a spring.

[0013] It has also been proposed to provide a movable footrest connected to the all lock to allow the operator to move the foot and all locks during rowing operation. However, it is equally desirable for the rower to be able to adjust the position of his feet on the all-lock support.

It is, therefore, another object of the present invention to provide an improved arrangement for supporting an oar of this type and allowing the position of the occupant's foot to be adjusted.

[0015]

A first feature of the present invention is that an elongated main hull, an outrigger hull supported on one side of the main hull, and one seat on the main hull facing the outrigger hull are provided. The present invention is applied to the realization of a self-propelled watercraft having the following. One oar is pivotally supported about an axis extending substantially vertically between the main hull and the outrigger hull and has a handle accessible to an operator seated to propel the watercraft.

Another feature of the present invention is that it applies to the implementation of a fin type oar for a propelled watercraft comprising an all element having a handle end and a fin end. One all lock supports one oar about a first pivot axis rising between both ends thereof, and the blade-type fin is pivotable about a second pivot axis rising at the blade end of the all element. Supported. There is a means accessible at the handle end of the all element to limit the pivoting movement of the blade fin about the second pivot axis during the stroke of the oar.

Another feature of the present invention is that it applies to the implementation of a fin type oar for watercraft propulsion comprising an all element having a handle end and a fin end. A second all lock lock pivotally supports the oar about a first pivot axis rising between its ends, and a blade-type fin rising at the blade end of the all element.
It is supported so as to be able to turn around the turning axis. In order to prevent any part of the all element from submerging in the water in which the oar is operating, means are incorporated to limit the movement of all elements other than the fins relative to the all rock.

Yet another feature of the present invention is that it applies to the implementation of a fin type oar for a propelled watercraft comprising an all element having a handle end and a fin end. One all-lock pivotally supports the oar about a first pivot axis rising between its ends, and a second fin wherein the blade-type fin stands at the blade end of the all-element.
Is supported so as to be able to turn about the turning axis of the center. The blade-type fin is offset with respect to the second pivot axis so that the blade-type fin is moved from a first position in which the watercraft advances when the all element pivots, and in a second position in which the watercraft retreats when the all element pivots. Means are provided at the handle end of the all element to move from the second position.

Still another feature of the present invention is that it is applied to a self-propelled watercraft having a long main hull and an outrigger hull supported on one side of the main hull. The seat is located on the main hull facing the outrigger hull. The oar is pivotable about an axis extending substantially vertically on an all-lock supported to move across the watercraft during the stroke motion in the area between the main hull and the outrigger hull during the stroke motion. Is supported. The oars have handles accessible to the operator and seats for watercraft propulsion. Biasing means biases the oar toward one of the hulls.

[0020]

1 to 3, a small self-propelled watercraft 11 has a long, substantially tapered main hull molded from a compatible material such as glass fiber reinforced resin. The main hull 12 has a substantially hollow shape, and both ends thereof can be sealed inside by a bulkhead if necessary, and the hollow portion can be filled with a buoyant body such as foamed plastic. The above main hull 12
Is centrally open and comprises one or more compartments that can be partitioned from one another and accessible through a hatch cover 13. The main hull storage room is designed to store food, clothing, tents and other camping equipment.

The seat 14 is attached to the main hull 12 between the hatch covers 13 so as to face laterally. The watercraft 11 includes an outrigger hull 15, which is molded from a suitable material such as glass fiber reinforced resin and is hollow. The outrigger hull 15 may either be a storage area accessible through a hatch cover, or alternatively, may be filled with a foamable buoyant body.

According to an important feature of this design, the outrigger hull 15 serves mainly for stability and has a length
Substantially shorter than 2. Since the entire weight of the occupant, that is, the operator, is placed on the main hull 12, most (more than 50%) of the buoyancy of the entire watercraft 11 is provided by the main hull 12. Preferably, 80% of the total buoyancy of the watercraft is provided by the main hull 12.

The length of the main hull 12 is, for example, 16 feet, the width is up to 10 inches, and the beam ratio is 2
0. This is a reasonable maximum length that is easy to transport on a car roof. On the other hand, the outrigger hull 15 is 10 feet long and 6 inches wide, and the beam ratio is 20.
It is. Of course, these dimensions are one example of a preferred embodiment of the present invention.

The outrigger hull 15 is secured to the main hull 12 by means comprising a pair of spaced cross beams 16.
It is connected to the. The cross beam 16 is the main hull 1
2 and are received in tubular supports 17 and 18 fixed to the outrigger hull 15, respectively. Cross beam 1
Suitable clamping devices are provided to keep the 6 in place and to support the main hull 12 and the outrigger hull 15 in the desired relationship.

In order to propel the watercraft 11 by an operator sitting on the seat 14, a propulsion system is provided, which comprises a monorail 19 having a cross-sectional shape shown in FIG. It extends across the area between the cross beams 16 and close to the seat 14. The monorail 19 can be easily formed as an extruded aluminum product and holds the seat 14. Further, the monorail 19 is detachably fixed to the main hull 12 by a connector as described in the connection between the monorail 19 and the outrigger hull 15.

The carriage 22 is slidably supported on the monorail 19 so as to be able to move across from the vicinity of the main hull 12 to the vicinity of the outrigger hull 15 shown in FIG. This monorail 19
It is fixed to the outrigger hull 15 by an attachment mechanism 23 consisting of a bracket and a fastener.

As shown in FIG. 5, the monorail 19 has a pair of grooves 24 on opposite sides of the monorail. The carriage 22 has a circulating ball bearing device with a ball bearing 25 provided in a groove 24, the device comprising a carriage 22 along a monorail 19.
For lubrication support. This support is very effective in resisting the torque of the oar generated during rowing.

The monorail 19 is disposed near the center of buoyancy of the main hull 12 and the outrigger hull 15, and the carriage 22 is provided with a pair of footrests or footrests 26 on which the rider places his / her feet. The above footrest 26
May be rigidly fixed to the carriage 22 or may be adjustable in length along the carriage to accommodate different heights of occupants and different pivot angles with respect to the carriage.

A rigger 27 is fixed to the end of the carriage 22 adjacent to the footrest 26 and connected in a suitable manner. The opposite end of the rig 27 has a tubular portion 28 slidable on one cross beam 16. The cross stay 29 is used for fastening
And the tubular portion 28.
Further, the cross beam 30 is connected to the rig 27 and the stay 2.
9, the all-assembly 22 is pivotally supported about a vertically extending pivot axis, and the all-assembly 32 is formed from a hollow tubular body, and the all-assembly 32 includes a collar. The carrying sleeve 33 is fixed at the center, and is interlocked with the all lock 31.

At the trailing of the all-assembly 32 (FIGS. 4, 6 and 7), that is, at the blade end, a sleeve 33 carrying a pivot shaft 34 is provided. Blade holder 3
5 is supported by a turning shaft 34 and carries a blade 36. The blade control arm 37 extends across the upper part of the blade holder 35 and the control rope 4
It carries a pair of attachments 38 and 39 that receive the 1 and 42 individually. These control ropes 4
1 and 42 extend through the hollow portion of the tubular portion of the all-assembly 32 and terminate in the vicinity of a handle portion 43 accessible to an operator sitting on the seat 14.

As shown in FIG. 6, the control rope 42 limits the degree of the turning movement of the blade 36 during the stroke movement. By changing the swiveling motion of the blade 36 with respect to the swivel shaft 34, different rowing efficiencies are obtained and performance is optimized. In addition, the blade 36 pivots from the position shown in FIGS. 4 and 6 to the position shown in FIG. 7 by pulling the control rope 41. At this time, the blade 36 is in the retreat mode, and the watercraft 11 is in the retreat direction. In this state, the turning momentum of the blade 36, that is, the efficiency, is controlled again by the control rope 42.

During rowing, the blade 36 acts like a fish tail, giving the watercraft 11 a very high thrust. It was also found that when only the blade portion 36 of the all-assembly 32 was immersed in water, the efficiency was dramatically improved. To accomplish this, a cable assembly 44 (FIG. 1) is attached to an eyelet 45 formed in the all assembly 32 adjacent to the handle 43 and further attached to the base of the all lock 31 by a turnbuckle 46. As can be easily seen from FIG. 1, the cable assembly 44 and the turnbuckle 4
6 is the blade 3 regardless of the skill of the operator.
Even if an operation of taking the watercraft 6 out of the water is performed erroneously, the degree of the blade 36 immersed in the water in which the watercraft runs is limited. This adjustment is possible by changing the position of the turnbuckle 46.

The solid line in FIG. 3 shows the position of the oar 32 at the end of a stroke in one direction in which the oar 32 rotates clockwise about the pivot axis of the all lock 31. During this movement, the blade 36 will be at an angle from the position shown in FIGS. 3 and 6 to the opposite side of the oar 32. The situation of FIG. 3 occurs when the oar is pushed outward to the imaginary line shown in the figure. During this movement, the carriage 22 and the rigger 27 move in the direction of the main hull 12, the final position being indicated by the round phantom line in FIG. A bias spring (not shown) is incorporated to move the carriage 22 to these positions so as to reduce the effort of the occupant.

To improve the stability, the front skeg 47
And, a rear skeg 58 is provided on the main hull 12 to reduce bowing and reduce energy loss due to swaying. The skegs 47 and 48 create some propulsion. To facilitate transportation,
The skegs 47 and 48 are removably connected to the main hull 12, but the main hull 12 has a suitable receptacle for receiving a blade at the upper end of the skegs 47 and 48 for attachment and removal. A unit may be provided.

FIG. 8 shows another embodiment of the fin type oar. A blade 360 having a shape similar to the blade 36 is formed at the fin end of the oar 32.
60 is formed integrally with the oar 32. For example, the blades 360 may be formed by forming the oars 32 with a glass fiber reinforced cash register and extending the tip thereof. The configuration of the other parts is the same as in the above embodiment. When the oar 32 and the blade 360 are integrally formed as described above, there is an advantage that a connecting member for connecting the both is unnecessary, the weight can be reduced, and the manufacturing becomes easy.

[0036]

As explained above, as a result of the action of the oars of the type according to the invention, the propulsion stroke is generated by the swiveling movement of the oars, the propulsion of which, as mentioned above, is like a fish. In addition, the watercraft can be easily steered by an operator controlling the movement of the oar. Similarly, the angle at which the fin or blade moves can be adjusted by changing the length of the rope,
The backward movement is also performed by the rope. In any case, the operator can access the apparatus while sitting on the seat. The oars also have a swept angle on the sides to avoid any damage in the event of a collision and to easily pass underwater seaweeds.

As is already evident, this watercraft is a highly stable watercraft that can be operated in rough seas and large waves, and at the same time in shallow waters and dense seaweeds. Further, the watercraft disassembly structure is easy to transport from a predetermined place to another place and is easy to store.

[Brief description of the drawings]

FIG. 1 is a side view of a small self-propelled watercraft having a structure according to an embodiment of the present invention.

FIG. 2 is an end view of FIG. 1;

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is an enlarged side view of the fold fin end showing the fin blade in the forward row position.

FIG. 5 is a sectional view showing a carriage support.

FIG. 6 is a plan view of FIG. 4 showing control of the turning motion of the oar in the direction of the forward rowing boat.

FIG. 7 is a plan view of FIG. 4 showing control of the turning motion of the oar in the backward row boat direction.

FIG. 8 is a diagram corresponding to FIG. 1, showing another example of the oar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Watercraft 12 Main hull 14 Seat 15 Outrigger hull 16 Cross beam 19 Monorail 22 Carriage 26 Footrest 31 All lock 32 All assembly 34 Revolving axis 36,360 Blade (fin) 41,42 Control cable 43 Handle part 44 Cable assembly

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B63H 16/04 B63B 35/73

Claims (3)

(57) [Claims] A main hull and one side of the main hull
Outrigger hull supported by the
On the main hull facing the adjustable footrest
And the main hull and outrigger
All lock around the first pivot axis extending vertically between
With an oar supported to make a turning motion
At the rear end of the oar, it turns around the second vertically extending turning axis.
A pivotable blade-type fin is provided,
Blade-type fins are used by the operator sitting on the above seat.
Is accessed by the handle at the tip of the oar.
Between the forward propulsion position and the reverse propulsion position via the rope.
Watercraft characterized by being able to turn with. 2. The oar lock is an oar straw.
During the hull exercise, between the main hull and the outrigger hull
Slidably supported on carriage in lateral direction
This carriage has a basin in the direction of the main hull.
2. The cuff according to claim 1, which is biased by an ias spring.
Ota craft. 3. The oar is a blade-type fin at a rear end.
Is attached to the cable to prevent immersion in the water.
A watercraft according to claim 1 or claim 2.