JPS58211995A - Wind propulsion device - Google Patents

Abstract

PURPOSE:To hold the wing with comfortable attitude, by coupling the both end sections of an auxiliary keel to both end sections of the keel. CONSTITUTION:The person riding on a board 11 will hold the wing 1 to receive the wind to sail on the water. The wing 1 is comprised of triangular canvas 21, 22 stretched across both side sections of the keel 2, a pair of spurs 3 for holding one sides of each canvas 21, 22 coupled to one end of the keel 2, a spreader 4 coupled between both spurs 3 for maintaining the angle between both spurs 3 constant and a strut 5 coupled between them for maintaining the angle between both spurs 3 an the keel 2 constant. Furthermore a coupling tool 90 is secured in the vicinity of both end sections of the keel 2 to which a curved auxiliary keel 9 are coupled.

Description

[Detailed description of the invention] This invention relates to improvements in wind propulsion devices.

Recently, people have been riding on boards that glide on water and have wings.
A device has been proposed that is propelled by the wing K11l. This wing has wing surfaces that are almost perpendicular to each other, and thrust is obtained by the masticating pressure exerted on one wing surface, while the other wing surface IC
Lift is obtained from the wind openings that receive the air, and this allows the wings to be easily maintained in a balanced state simply by holding the keel at the intersection of the two wing surfaces. It is comfortable to hold this wing at shoulder height, but in order to receive sufficient wind and to prevent the tip of the wing surface, which generates lift, from touching the water surface, keep the wing as high as possible. It is desirable to

This invention was made in order to solve these conventional problems, and it is possible to hold the wing in a comfortable position and also to maintain the wing at a high position. That is, in the above-mentioned wing, the present invention has both ends of a curved auxiliary keel connected to both ends of the keel.

Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows the state of use of the device, with a person 1 riding on the board 11.
0 is gliding on the water with wing 1 catching the wind. The wing 1 has triangular canvases 21 and 22 that extend from both sides 1C of the keel 2, and a pair of spars 3 that are connected to one end of the keel 2 and hold the negative side of each campus 21 and 22.
, a spreader 4 connected between both spars 3 so as to keep the angle between them constant, and a strut connected to both spars 3 and the keel 2 so as to keep the angle formed between them constant. It consists of 5. Also, 4. As shown in FIGS. 2 and 3, a coupling member 90 is fixed, to which both ends of the curved auxiliary keel 9 are coupled. If the sulk keel 2, spar 3, spreader 4, auxiliary keel 9, and strut 5 that constitute the bone member are each made of a nodule made of carbon or glass fiber reinforced plastic, it can be made into a lightweight and highly rigid bone member. . The bone members are joined together at their intersections by suitable means.

As shown in FIG. 4, a floating body 13 is attached to the tip of each of the canvases 21 and 22 by a stopper 14, and a decorative body 30 such as a sphere is attached to the tip of the spar 3. Additionally, a suitable ribbon may be attached as a decoration to indicate the direction of the wind.

The person 10 on the board 11 holds the auxiliary keel 9 at two places and only operates the keel 2 in a direction perpendicular to the axis, but does not restrict rotation around the axis. Therefore, when the wind blows on the canvas 22 forming one wing surface, the wing 1 rotates around the holding part of the auxiliary keel 9, and the tip side of the canvas 21 descends, but this allows the canvas 21 to catch the wind. , this force acts on the holding portion of the auxiliary keel 9 in the opposite direction. Therefore, the rotational force by the campus 22 and the rotational force by the campus 21 are balanced, and the campus 22 receives thrust due to the wind pressure.
Lifting force is obtained from the wind pressure applied to the campus 21. Since the wing 1 is normally lifted by this lifting force, the person 10 supports the wing 1 by hanging from the wing 1 via the auxiliary keel 9. For this reason, the wing 1 can be kept at a higher position by the amount of bulge of the auxiliary keel 9 than when a person 10 holds the keel 2, and the wind can be caught that much more effectively, and the tip of the canvas 21 is lowered ( It becomes difficult to come into contact with the water surface even at low temperatures.

When the wind becomes weak, the lift force decreases in proportion to it, and the wing 1 becomes heavier, making it difficult to support the wing 1 in the state shown in FIG. In that case, as shown in FIG.
1, the board 11 supports the load of the wing 1, and the person 1O grasps and operates the strut 5. Alternatively, the end member 6 may be provided at the tip of the spar 3 and that portion may be engaged with the engaging portion 91 of the board 11. Note that the engagement between the retaining portion 91 and the end member 6 is performed by spherical contact, and therefore the end member 6 can be tilted in any direction, and if it is tilted significantly, the retainer will come undone and the end member 6 will be lost. This prevents excessive forces from acting on it. The end member 6 is attached to and removed from the engaging portion 91 by press-fitting the end member 6 from above or pulling it out upward.

When the wing 1 falls into the water, the tips of the canvases 21 and 22 tend to fall downward, and in that case, it is difficult to pull up the wing 1, but in the case of the above configuration, the canvases 21 and 22
Since the floating body 13 is attached to the tip of the canvas 21, 22, the tip side of the canvas 21, 22 faces upward), so that it can be easily pulled up. In addition, in order to prevent the wing 1 from being washed away if the wing 1 falls into the water, attach the wing 1 and the board 11 with an appropriate rope.
It is preferable to connect them.

The above-mentioned wing is designed to obtain thrust by being held in the hand and receiving the wind, and is not only used as a device for gliding on water as shown in the above embodiment, but also as a device for skiing, skating, and roller skating. It is also possible to use it as a propulsion device for gliding on land by wearing a board or by using a board that glides on snow or ice.

As explained above, the present invention aims to improve operability and performance by supporting the wings at a high position in a device in which a person propels the machine by holding the wings on a sliding board or the like.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention in use, Fig. 2 is a perspective view of the joint between the keel and the auxiliary keel, Fig. 3 is a sectional view thereof, and Fig. 4 is the Th of Fig. 1. '-IV line sectional view, FIG. 5 is a sectional view of the engaging portion on the board. ■... Wings, 2... Keel, 3... Spar, 4...
- Spreader, 5... Strut, 9... Auxiliary keel, 11... Board, 21.22... Campus. Patent Applicant Yamaha Motor Co., Ltd. Agent Patent Attorney Etsu Kotani No. 1
Figure opening ■ Figure 2) Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A keel, a triangular campus extending from both sides of the keel, a suhart that is connected to one end of the keel to hold one side of each campus, and both spars to keep the angle between both suha constant. In a wing consisting of a spreader connected between the keel and a strut connected to the spar and the keel so as to maintain a constant angle between the spar and the keel, both ends of the keel are curved at both ends of the auxiliary keel. A wind propulsion device characterized by combining the following.