JPS59500368A - surfboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Sa - board The present invention relates to a surf dart according to the generic concept of claim 1.

Surftate has numerous embodiments. Surfsee 1, for example, in the longitudinal direction It's constricted. The edges are rounded or otherwise shaped. All known services The downside to Fudart is that it can cause the surfboard to pitch or slide in particularly strong waves. The problem lies in the fact that you cannot travel at a significant speed because you are hit hard by the crest of the next wave.

The object of the present invention is to avoid being hit and pitching even on strong and rough water surfaces. If the vehicle is able to travel without any loss of travel and slips, it will be able to travel without any loss of travel and with a significantly small resistance value. The safety of the Cortus is particularly quick and flexible for use even in rough waves. The objective is to provide a surf dart that is stable in the horizontal and vertical directions.

This problem can be solved by the features of claims 1 and 13 and the features of dependent claims. It was decided.

According to the measures according to the invention, there is no loss of running speed when driving into the first wave. , which also extend parallel to each other in the longitudinal direction a) a centrally located vertical passage; b) A bow fin section stepped at right angles and C) A staircase also stepped at right angles. shaped keel fin part This provides a very significant buffering effect. This increases the speed as is well known. All vehicles that cause significantly higher running resistance values due to the accompanying sideways displacement flow. Potential streamline body shape is avoided in the underwater range of the surf dart body.

The lateral displacement resistance of a potential streamline body increases by the cube of the traveling speed, and is In the configuration based on the present invention, the increase in resistance value is reduced to the power of two. Therefore, the thrust If the values are the same, a greater speed can be obtained or a significant required thrust can be obtained compared to the conventional one. You can get force reduction.

A further reduction in running resistance is achieved by the use of a special wetted surf dirt section according to the invention. A water-air mixture resulting from the formation and rising with increasing running speed - in short caused by a corresponding reduction in the density of the water' and by the channel shape and its arrangement, Due to this arrangement of the passages, when driving forward, the Therefore, the streamlines of the flowing water are hydraulically forced in the parallel flow direction. Ru.

Details of the invention are illustrated by means of drawings and descriptions, all of which are not required to scale. In principle ((only shown), FIG. 1 is a side view of a surf dart with features according to the invention; Figure 2 is a cross-sectional view taken along line A-B in Figure 11, in short, just the outline of the surf dirt. is shown, and the bow fin is shown with a broken line or a dashed line. The plan view of the bottom of Fubo-1'' and Figure 4 show the surfboard mounted on the surfboard in the front area. FIG. 3 is a partial side view of the bow fin.

The drawings presented herein are purely schematic and are not claimed to scale. This website -Fdates are also used for tandem surfboards. In that case, the center The layout of the board (plug-in type, swivel type, etc.) remains unchanged.

Holding devices for mass I and nozzles are also known and are not described or shown here. Sen Since the tazed i-socks 40 and the fins 41 are not important in the present invention, they are shown in FIG. However, the insertion device for the mast is not shown.

The bow fin 3 (see Figure 1) is arranged at a distance from the top surface of the surf z-r1. The leading edge 4 may extend vertically with a spacing of 10 or may extend directly diagonally (first edge 4). (see Figure 4).

The shape of the outer 11 of the bow fin 3 according to the invention is shown, for example, in the plan view of FIG. has been done. The contour line 31 extends from the front end approximately to the rear end of the surfsee 11. . In this case, the protrusion on the side I11 is shown relatively large.

This protrusion may be significantly smaller than shown, for example Surf, d-F It can be from 5% to 20% of the width of l. In this case, the front range is extremely large. A large curvature (e.g. contour line 31) is given or this edge has a smaller curvature. (See contour line 36) does not really matter. Outline of bow fin 3 Lines 33 and 35 also have different curvatures, but this bow fin is against the surfboard. rather than extending parallel or projectingly, the front section is approximately surfender. It extends at 1 where the curvature of the bow end (Zade bow range) ends.

Distance or protrusion amount 2 (from the foremost edge of surf dart 1 to the foremost edge of bow fin δ) l-j: Can be carried appropriately.

This is the lower surface of bow fin 3 and surf in the forward range, and the upper surface 39 of toe 1. This also applies to the interval between.

The upper side of the bow fin 3 may be curved convexly or concavely, or may be flat. Good too. A vertical spacing gland 10 is shown in FIG. 1 relative to the front end of surf z-1'1 It is possible to have a larger spacing or protrusion 11 than the above. however This distance 11 is extremely small, or the bow fin 3 is directly connected to the front end of the surfboard 1. It is also possible to transfer directly.

open upwards, surf, symmetrical to the vertical mid-seventh plane of d-t’l The ventilation passage 12 extending to the extending between both vertical and horizontal side walls formed (see e.g. Figure 3) . In the illustrated embodiment there are in each case four sliding stages 5 to 8 (puncture and steering J-t. ’) 7 bars are provided. This number may be larger or smaller than the illustrated embodiment. stomach. Slide steps 5 to J3 must extend the entire length of the bottom 37 of surf pedestal 1. It doesn't have to happen. However, when the speed is high, the runway stages 5 to 8 are Advantageously, it always starts from the front end so that it reaches the ventilation channel 12.

A keel fin system 19 is provided centrally in the central region of the ventilation passage 12. It is. In this case it is advantageous if the keel fin 18 extends to the front end.

However, the keel fin-18 does not reach the rear end (as in runs 5 to 81). There is no need to do it.

The trenched keel fin 18 is placed at a distance of 20 from the stern before reaching the stern. It may be finished. In this case, the keel fins /16 to 18 are arranged in a stepped manner. ing. Keel fins 16 to 18 are all finished at the specified -41"C. Good too. Also, in the forward range, keyrunes 16 to 18 are stepped in a step-like manner, that is, they are lowered to the rear. D. It may be arranged. However, keel fin 161 results Showa 59-500388 (4) ~18 is from runway 5 to the front (leading edge) as shown for 8-1+. It may be extended. The keel fin 16 is retracted stepwise toward the bottom. and 17 are arranged on both sides of the keel fin 18. In this case a stepped arrangement The keel fin 1G is the shortest, the keel fin/17 is the middle length, and the keel fin 1G is the shortest. Tunnel 18 is chosen to be the longest. This is the solution according to the invention.

An angle 21 is marked in FIG. This angle 21 is from slide stage 5 to 8 or This figure shows the slope of the keel fin from /16 to 18. Bow fin 3 is also surfboard It can be provided at the above-mentioned angle with respect to the upper surface 39 of the A 11. but while at least partially surfing the bow fin 3 against the upper surface of the surf A parallel arrangement is also possible (see, for example, FIG. 4). Furthermore, this The figure also shows that the bow fin 3 can also be provided with an inclined landing edge 23. It is shown. However, instead of this landing edge, it is possible to choose a spherical or ellipsoidal bow. Can also be done. For example, balls 26, 27 can be provided symmetrically (sphere 26 is placed above and the ball 27 shown by the dashed line only protrudes downward by the same amount. do not). A similar arrangement can also be chosen for the bow range of the Surfsee 11. (See for example ball 28).

Furthermore, according to the present invention, the cross section is oval or circular between the contour line 3 and 36. It is possible to provide a rim that allows for In this case the maximum diameter is in the central range and The maximum diameter of the vessel gradually decreases towards the stern.

The transition from keel fin to keel fin may be at right angles in one cross-section or at other angles. It can be an angle.

In this case, the transition section can be rounded. This is the runway This also applies to numbers 5 to 8.

Advantageously, the bow fin 3 rests on the surf front -F. In this case, The waterline of the fubod is maintained, at least in principle.

Furthermore, according to the invention, the bow fin/3 can be configured to be removable (into the groove). (push-in fixation, screw fixation, etc.)

In Figure 4 - showing special variant embodiments - the cross section is circular or oval. An edge 28 is provided, and this edge 28 forms a protrusion or widening portion of the surf pedo. It is moving to 25. However, the protrusion or widening 25 is the lowest point of the edge 28. It is also possible to start from the beginning (see dash-dotted line, first run step 8a).

Furthermore, as can be seen from FIG. 2, the protrusion of the bow fin 3 corresponding to the contour line 31 is It can also extend, for example, parallel to the stern 1 at a distance from the edge of the hull 1. (See dashed line 31a).

Further, the bow fin 3 is defined by, for example, a dashed line 36a (from contour 36 to contour 36a-\). It can also be shortened in the stern range as shown. In this case, the spacing is wing-like in the stern section. It is once widened and terminates abruptly at the end.

Such projections may be concavely curved or straight-extending stern (stern shape 29.3 0) may also be provided at intervals and in parallel.

The contour line 32a is curved in the bow range of the surf pedestal 1, for example, has an arc shape. This indicates that it may be included.

FIG.1 FIG.3 FIG.4 international search report ANNEX TOTHt INTERNATIONAL 5EARCHREPO RT　ONPatentdocumentPublicationPatent familyPubicahi1chcited ir+ 5earch c+ ate member(s) cateeport

Claims (1)

[Claims] 1 A surfboard with a freely movable mast holding device and centerhoe P at least one ventilation passage (1) on the bottom (37) of the two surfades (1). 2), wherein the ventilation passage is connected to at least one internally located key. fins (16-18) and at least one outer sliding step (5-18) 8) A surfboard characterized by being formed by. 2 The keel fins (16 to 18) are arranged in a stepped manner, and in this case the keel fins (16 to 18) are The fin (18) protrudes the longest forward from the bottom (37), and However, the outer keel fin (16) protrudes forward from the bottom (37) very briefly. Surfboard 3 according to claim 1, characterized in that the keel is The fins (16-18) are arranged in stages, in this case the fins (16-18) (18) has the maximum distance from the bottom surface (37) Ic and the outermost keel fill. Claims 1 to 3 characterized in that the ring (16) has a minimum distance. Surf date listed in any one of the items. Tun: The central keel fin (18) extends at least the entire length of the surfboard toward the stern. Claim 0, characterized in that it extends by a distance (20) from % to only The surf i-do according to any one of items 1 to 3. 5. The slide steps (5 to 8) are arranged in a stair-like manner, and in this case, the inner slide The outermost sliding step (5) whose step (8) has the greatest distance to the bottom (37) K has a minimum distance. Surf date listed in one of the items below. 6. It should be noted that the runways (5 to 8) start from the front range of surf safety 12. To the surf safety set forth in any one of claims 1 to 5, 7. The sliding steps (5 to 8) extend over only a portion of the entire length of the bottom surface (37) The surfboard according to any one of claims 1 to 7, characterized in that: dirt. 8. The bottom surface (37) of the surf dart (1) [the center keel fin (18)] ) and - the maximum distance of the innermost sliding step (8) is l:2 to 1. :4. Any one of claims 1 to 7 characterized in that: Surfboard included. 9. The ratio of the full width of the sliding steps (5 to 8) to the full width of the keel fin system (19) is 5 to 3: 1]. Surf dirt as described in section. 10. The rising angle (21) of the sliding steps (5-8) and keel fins (16-18) is 2. Claim 1 characterized in that the angle is between 3° and 6°, preferably between 3° and 6°. The surfboard according to any one of paragraphs 9 to 9. 11. The shape of the bow of Surf N-F' (1) is formed by an ellipsoid or a sphere (28) In this case, the ellipsoid is placed with its long axis in the longitudinal direction of the surfboard. As described in any one of claims 1 to 10, characterized in that surfboard. 12. The above-mentioned sphere or ellipsoid is eccentric, for example, with respect to the upper surface (39) and below it. The surfer according to claim 11, wherein the surfer is located on the side. Do. 13. Freely movable mast holding device and center board surfboard , the bow fins (three) protrude beyond the contour line (32°32a, 34). is placed vertically away from the upper edge of the surfboard (1). Features ← Fusade. 14. The bow fin (3) extends laterally from the surf l-)' (1), advantageously from the surf -1 as described in claim 13, which is characterized in that it protrudes over the entire length. surfboard 1゜ 15 Bow fin (3) and surfboard speed 1) are spaced from each other only in the forward range Either claim 13 or 11, characterized in that Surfter 1゜ described in item 1 16. Bow fin (3) is surf s? -) Extended over % to % of the total length of 7(1) Any one of claim 13 or 15, characterized in that: Listed surfer 10 17. The bow fin (3) and the L side (39) of surfboard 1 are attached to the stranding edge (4). Any one of claims 13 to 16, characterized in that The sir-yz-p according to item 1 above. 18, the raised edge (4) extends perpendicularly to the upper surface in the first range plane, and the distance ( 10) of claims 13 to 16, characterized in that Surfter 1゜ as described in any one of the above items 19 The bow fin (3) is placed above the water line of the surfboard P (1). The service according to any one of claims 13 to 18, characterized in that Fu board. 20. The bow fin (3) has a notch of the same or different shape and thickness. The service according to any one of claims 13 to 19, characterized in that - Fubo PO 21. The bow fin (3) is located at a position offset from the horizon or waterline. The surfer 1° according to any one of claims 13 to 20. 22 The protruding length 2) of the bow (3) is 1/4o to '/20 of the total length of the surf mead. As described in any one of claims 13 to 21, characterized in that surfer de. 23 The bow fin (3) corresponds to the shape of the Surf N-P bow in plan view. It has a special shape and runs continuously into the lateral Tesurf N-Y. Surf 1 according to any one of claims 13 to 22, -tF024, the tip of the bow fin (3) is ellipsoidal or spherical (26, 27) Claims 13 to 23, characterized in that Surfboards listed in any one of the above 25, the sphere or ellipsoid is eccentric to the upper surface of the bow fin (3), e.g. Or, the center of the ellipsoid is located below the upper surface of the bow fin. Surf z-y026 according to claim 24, in which the bow fin (3) is concavely curved. Special song 4 27. The 71-i area of the bow fin (3) is continuously connected to the surfboard (1) from above. Claims 13 to 26, characterized in that the Surf N-y028 as described in any one of the items: Edge of bow fin (3) (23) is at least partially sloped or rounded. Surf&-tF according to any one of claims 13 to 27. . 29 The bow fin (3) is removably installed on the surf, tr-r (1). The method according to any one of claims 13 to 28, characterized in that surfboard. 30, The green purchasing surface that clearly extends along the contour line (31 to 36) is spherical, drop-shaped, or elliptical. The droplet-shaped or elliptical cross section is circular in shape, and the long axis of the drop-shaped or elliptical cross section is substantially horizontal. The surfboard 1° according to any one of claims 13 to 29 31, the cross-sectional shape is the largest in the range of the tip of the bow of Surf N-y, and Claim 30, characterized in that it extends in parallel from the range to the stern. surfboard 1゜