JP7410587B2 - surf skateboard - Google Patents

Description

TECHNICAL FIELD The present invention relates to a surf skateboard, and more particularly to a technique that allows a user to experience/train surfing on land by attaching the skateboard to a surfboard.

Surfing, also known as "surf riding," is a popular marine sport that involves standing on a surfboard at sea and sliding down a slope formed by waves. The series of movements involved in surfing is to take off from paddling, stand up on the surfboard, and then enjoy riding the waves by repeatedly doing ups and turns.

Some surfing training can be done on land. One of them is training on a surf skateboard. Existing surf skateboards look almost the same as skateboards, but by adopting a track for surfing training that allows the deck to tilt left and right, they can perform movements similar to surfing turns while riding on land. It is now possible to do so.

However, even though it is specialized for surfing training, the reality is that it is still different from the actual experience of surfing. Therefore, it is useful for experienced surfers to use it to check their form, but it is difficult for beginners to get used to surfing. Moreover, with a surf skateboard, although you can train for turns, you cannot train for a series of exercises including paddling and take-off.

More importantly, when it comes to surfing, people's preferred styles and body styles vary depending on their physique (height, weight), athletic characteristics, physical characteristics, etc. Therefore, it is desirable to train on a surf skateboard that suits the person, but existing surf skateboards are only able to adjust the track spacing, which is not necessarily sufficient.

Japanese Patent Application Publication No. 2006-239305 Utility Model Publication No. 57-120071

The present invention was made based on such circumstances, and its purpose is to provide a surf skateboard that can be attached to a surfboard to experience/train surfing on land.

The gist of the present invention is as follows.
(1) The surf skateboard of the present invention has a support plate that is formed into a flat plate with a length equal to or longer than the surfing stance width, and is attached in the longitudinal direction of the bottom surface of the surfboard, and a mounting position in the longitudinal direction of the bottom surface. a fixing means for removably connecting the top surface of the support plate to the bottom surface at a selected position, and a set of tracks attached to the bottom surface of the support plate at a selectable distance; It is characterized by comprising a raising member interposed between the track and the support plate.
(2) The fixing means is a face seal arranged in a band shape along the longitudinal direction on both sides of the longitudinal center line of the support plate.
(3) The surfboard is replaceable, and the fixing means can also be surface-bonded to the bottom surface of a simulated surfboard instead of a surfboard used on the water.
(4) The raising member includes a laminated wooden block member and an elastic member, and the elastic member is arranged on the side in contact with the support plate.
(5) The raising member further includes a spacer for height adjustment.
(6) The support plate is made of wood, and the wooden support plate and the wooden block member of the raising member are made of the same type of wood.
(7) The support plate is made of European-grown plywood.
(8) The European-grown wood plywood is oak plywood from Northern Europe.
(9) The longitudinal direction of the support plate is formed to have a length extending at least from the position of the foot placed on the tail side of the surfboard to the position where the hand rests at the time of takeoff.

According to the surf skateboard of the present invention, for example, the upper surface of the support plate is attached to the bottom surface of a surfboard used for surfing to realize a surfboard that can be run on land (land surfboard), so that it can be used for actual surfing. It will be possible to simulate surfing on land.

Since the surf skateboard of the present invention allows the user to freely select the surfboard (including a simulated surfboard) to be attached to the support plate, the user can simulate surfing with the surfboard that he or she wants to experience/train.

Furthermore, by making the attachment position of the support plate in the longitudinal direction of the surfboard selectable, it becomes possible to position the surfboard according to the user's physique (that is, adjust the center of gravity). This positioning, in combination with adjustment by the spacing of the tracks and/or the raised member, which is provided as a preferred example, enables more fine adjustment. The positioning can also be changed depending on the training menu, for example, when you want to practice turning from ups, or when you want to practice takeoff from paddling.

1 is a perspective view of a land-based surfboard constructed from a surf skateboard and a surfboard according to an embodiment of the present invention. It is a side view of the above-mentioned land surfboard. It is a perspective view of the above-mentioned surf skateboard. FIG. 3 is a view of the bottom of the surf skateboard seen from the front side. They are a top view, a side view, and a bottom view of the surf skateboard. FIG. 2 is a plan view and a bottom view of a surfboard attached to the surf skateboard. It is an explanatory view of the position where the above-mentioned surf skateboard is attached to a surfboard. They are a plan view, a side view, and a bottom view of a simulated surfboard attached to the surf skateboard. This is a photograph taken of training on a land-based surfboard using the prototype of the above-mentioned surf skateboard.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A surf skateboard according to a preferred embodiment of the present invention will be described below with reference to the accompanying drawings. However, the technical scope of the present invention is not interpreted to be limited in any way by the embodiments described below.

(First embodiment)
1 and 2 show a state in which a surf skateboard 1 of the present embodiment is attached to the bottom surface of a surfboard 2 to form a surfboard that can be run on land (hereinafter referred to as "land surfboard S"). The surfboard 2 is preferably one that can actually be used for surfing, such as a commercially available one. Although the figure shows a shortboard as an example, it can be changed to other types of surfboards such as kids' boards and fun boards. That is, since the surf skateboard 1 has the configuration described in detail below, there are no restrictions on the type, material, manufacturer, etc. of the board to be attached, and the user can attach the surfboard 2 that he or she wants to experience/train. . Of course, it may be something that the user uses himself or something that he has used in the past.

As shown in FIGS. 3 to 5, the surf skateboard 1 includes a support plate 10 that supports the bottom surface of the surfboard 2 from below, and a pair of front and rear tracks 2A and 2B attached to the bottom surface of the support plate 10. The front and rear tracks 2A, 2B are provided with wheels 20, which are wheels. This allows the land surfboard S to run on land.

The support plate 10 is formed into a plate shape extending in the longitudinal direction of the surfboard 2. The plate-shaped member is preferably a flat plate with a flat upper surface. That is, existing surf skateboards and skateboard decks have a curved tail or nose to form a kick, but unlike this, the support plate 10 is formed flat and attached to the bottom surface of the surfboard 2. making it possible. Although it is conceivable to process it into a shape that matches the curved shape of the bottom surface of the surfboard 2, it is preferable to make it flat in order to have compatibility with which it can be attached to various types of surfboards 2.

The plate-shaped support plate 10 is preferably made of wood. The wood used as the raw material is preferably European-grown plywood, more preferably Scandinavian oak plywood. The surface of the support plate 10 may be subjected to surface treatments such as coating, painting, and decoration. Scandinavian oak is hard, has a tight grain, and has high strength, and is stronger and more tenacious than, for example, Japanese birch, so it can be made into a thin support plate 10 with a thickness of, for example, 9 mm. That is, due to the characteristics of Scandinavian oak, it is possible to support the surfboard 2 from below even with such thickness, and by making it thinner, the support plate 10 can fit (adapted to) the bottom surface of different types of surfboards 2. ) easy to do.

Furthermore, the advantage of using Scandinavian oak for the thin support plate 10 is that when we actually tried it on a prototype, the support plate 10 followed the twist of the surfboard 2 when making a turn, and One of the reasons is that the rebound when trying to return to the original position was similar to the feeling of being hit by a wave in actual surfing.

As a preferable example, the length of the support plate 10 in the longitudinal direction is at least equal to or longer than the surfing stance width. Surfing stance widths vary from person to person, but when we tested and monitored the Land Surfboard S using a prototype, we found that adult men's stance widths ranged from 450 mm to 700 mm, with each person having their own preference. More preferably, the length is such that it spans from the position of the foot placed on the tail side of the surfboard 2 to the position where the hand rests upon take-off. An example of the size of the support plate 10 is that the length in the longitudinal direction is 916 mm, the width in the transverse direction is 196 mm, and the thickness is 9 mm. Scandinavian oak plywood is a plywood made by laminating an odd number of veneers with the fiber directions intersecting (preferably perpendicular) in alternating directions and bonding them together. For example, plywood with a thickness of 9 mm is formed by laminating five veneers of equal thickness, and plywood with a thickness of 12 mm is formed by laminating seven plates of equal thickness. Specific gravity is approximately 0.7. The support plate 10 is formed by cutting out a predetermined shape from plywood. In the illustrated example, the shape of the nose and tail is given a design quality, but the size and shape of the support plate 10 are not limited.

However, as a result of pursuing the ease of attachment to the surfboard 2 and the surfing experience as described above, it is not assumed that the surf skateboard 1 will be used alone. This is because the support plate 10 may not be able to withstand the weight or twist of the turn. That is, the surf skateboard 1 of this embodiment is specialized for embodying a land-based surfboard S, and has a different purpose and method of use from existing surf skateboards and skateboards.

A face seal 11 is disposed on the upper surface of the support plate 10 to removably attach the support plate 10 to the bottom surface of the surfboard 2. The face seal 11 is an example of a fixing means for attaching the surf skateboard 1 to the surfboard 2. The face seal 11 is arranged, for example, along the entire length of the support plate 10 along the longitudinal direction of the support plate 10 . As an example, it is preferable that the face seal 11 be able to occupy half or more of the area of the support plate 10 for face-to-face contact. In the figure, as a preferable example, two band-shaped face seals 11 are arranged on both sides with a longitudinal center line in between. At this time, it is preferable that they be symmetrical with respect to the center line. However, the face seal 11 may extend along the transverse direction, for example, and the shape and size are not limited.

The surface seal 11 is preferably a surface fastener. That is, as shown in FIG. 6, the other hook-and-loop fastener 11a is attached to the bottom surface 2a of the surfboard 2, and the hook-and-loop fasteners (11, 11a) are surface-connected to each other. At this time, the hook-and-loop fastener 11a on the surfboard 2 side may be made longer than the hook-and-loop fastener (surface seal 11) on the support plate 10 side. The tail side is arranged until the tail side end of the support plate 10 is located at the front end of the opening 11b to which the center fin is attached. Reference numeral 11c is an opening to which a side fin is attached. The hook-and-loop fastener (11, 11a) is preferably one that can hold a weight of 15 kg in a unit area of 50 mm x 50 mm square for 10 minutes or more with the support plate 10 standing vertically.

The size of the face seal 11 is, for example, 900 mm in length and 50 mm in width. In the illustrated example, they are formed in an arc shape to match the shape of the nose of the support plate 10, but they are arranged approximately along the entire length of the support plate 10 in the longitudinal direction. The distance between the two face seals is, for example, 100 mm.

In this way, by attaching the surf skateboard 1 to the surfboard 2 with the surface seal 11 extending in the longitudinal direction without using fixing means such as bolts or screws, the bottom surface 2a of the surfboard 2 can be fixed in the longitudinal direction. The attachment position of the support plate 10 can be freely selected by the user (or instructor). Therefore, the attachment position of the support plate 10 can be adjusted to a position that suits the user's physique and preference, for example. Alternatively, the mounting position can be changed depending on the training menu.

Next, how to attach the tracks 2A and 2B will be explained. A through hole 12 for a bolt is formed between the two face seals 11 on the upper surface of the support plate 10 as a mounting hole for mounting the tracks 2A, 2B. The bolt through hole 12 is a circular hole that vertically passes through the support plate 10. At that time, it is preferable that the upper part of the through hole 12 be shaped so that the bolt head can fit therein so that the bolt head does not protrude.

In particular, as shown in FIGS. 4 and 5, the tracks 2A and 2B are each attached using a set of four bolt through holes 12. That is, the tracks 2A and 2B are attached to the support plate 10 by inserting four bolts into the through holes 12 from the top side of the support plate 10, passing them through the through holes of the base plates 21 of the tracks 2A and 2B, and then fixing them with nuts 22. do. A through hole 12 for a set of four bolts is formed on the tail side of the support plate 10. On the other hand, through holes 12 for multiple sets of bolts are formed on the nose side. That is, the attachment position of the nose-side track 2A is made freely selectable, so that the distance between the tracks 2A and 2B can be changed in multiple stages.

On the nose side of the support plate 10, for example, twelve rows of two through holes 12 are formed in the lateral direction at intervals in the longitudinal direction. At this time, as shown in FIG. 4, the interval L1 between the rows is set to half the interval L2 between the through holes in the base plates 21 of the tracks 2A and 2B. As an example, when the interval L2 between the through holes in the base plates 21 of the tracks 2A and 2B is approximately 64 mm, the interval L1 between the rows is halved to approximately 32 mm to form 12 rows. Thereby, the mounting position of the nose side track 2A can be set in ten steps in the longitudinal direction. The interval between the through holes 12 in the lateral direction is approximately 42 mm. The length from the nose tip side to the first row of through holes 12 is approximately 47 mm.

Each track 2A, 2B has a rotatable shaft (not shown) within a hanger 23, and wheels 20 are connected to both sides of the shaft. Each truck 2A, 2B is equipped with a surf skateboard in which a hanger 23 moves like a pendulum. In particular, the nose side track 2A is preferably one that operates three-dimensionally. Such trucks 2A, 2B can be equipped with commercially available trucks for surf skateboards. One example is the ``CARVER CX4.'' However, it is desirable to change the hardness of the bush 24 depending on the user's physique and preferences, for example.

As mentioned above, trucks 2A and 2B that are commercially available for surf skateboards can be used, but they are not attached directly to the support plate 10, but with the raising member 3 interposed therebetween. The raising member 3 is formed, for example, into a rectangular block shape that matches the planar shape of the base plates 21 of the tracks 2A, 2B, and similar through holes are formed at positions corresponding to the through holes of the base plates 21 of the tracks 2A, 2B. There is. Thereby, the raising member 3 and the tracks 2A, 2B can be integrally attached to the support plate 10 using a common bolt.

The raising member 3 raises the center of gravity of the land surfboard S so that it is possible to experience/train actual surfing rail work (for example, how to use your body when inserting the rail). As a preferable example, the raising member 3 has a structure in which a wooden block member 31 and a plate-shaped elastic member 32 are laminated. Furthermore, a spacer 33 can be optionally included to adjust the height according to the user. The wooden block member 31 is made of the same type of wood as the support plate 10, for example. Namely, it is Scandinavian oak plywood. The elastic member 32 is preferably a urethane sheet.

Since the height is raised as described above to raise the center of gravity, the height raising member 3 needs to have the strength to stably support the land surfboard S. However, when a prototype is actually produced, the wooden block member 31 alone is too hard and the surfing feeling is impaired. Therefore, a plate-shaped elastic member 32 is interposed. In particular, the urethane sheet has excellent strength among elastic materials and also has excellent abrasion resistance, so it can stably support the land surfboard S. Furthermore, its elastic action prevents the surfing feeling from being impaired.

The spacer 33 is arbitrarily placed depending on, for example, the user's physique or surfing experience. For example, if the center of gravity is to be lowered and stabilized for beginners, the spacer 33 may be omitted. The spacer 33 is made of, for example, resin or wood such as Scandinavian oak. The spacer 33 is interposed between the wooden block member 31 and the base plate 21 of the tracks 2A and 2B. That is, it is arranged on the track 2A, 2B side opposite to the elastic member 32.

Regarding the size of the raising member 3, the wooden block member 31 has, for example, a length of 95 mm, a width of 60 mm, and a height of 24 mm. When made from Scandinavian oak plywood, the 24 mm thick plywood is made by laminating 15 veneers of the same thickness. As an example, the elastic member 32 has a length of 95 mm, a width of 60 mm, and a thickness of 5 mm. As an example, the spacer 33 has a length of 77 mm, a width of 55 mm, and a height of 6 mm.

The procedure for attaching the surf skateboard 1 configured as described above to the surfboard 2 is to first adjust the spacing between the tracks 2A and 2B according to the user's physique and preference. It may be adjusted according to the training menu. Then, as shown in an example in FIG. 7, the surfboard 2 is turned over, and the surf skateboard 1, which has also been turned over, is placed on top of the surfboard 2, and is pressed and attached.

The alignment is performed by aligning the center axes of the surf skateboard 1 and the surfboard 2 in the longitudinal direction, and setting the reference position where the tail end of the support plate 10 is located at the front end of the opening 11b to which the center fin is attached. The device is then placed on the device after adjusting its position in the front-rear direction (in the direction of the arrow in the figure) according to the user's physique and preferences. Since it is a face seal 11, fine adjustment is possible. The instructor may advise on a series of adjustments. It is better to actually experience/train and readjust the position based on the feedback. Once the desired position has been confirmed, it is preferable to mark M for alignment on the support plate 10 and the surfboard 2. The mark M on the support plate 10 side may be written in advance. Further, a center line serving as a guide may be written in advance.

According to the surf skateboard 1 according to the above-described embodiment, for example, it is attached to the bottom surface 2a of the surfboard 2 that can be actually used for surfing to realize a land surfboard S, so that it is possible to simulate surfing that is close to actual surfing. It becomes possible to experience/train on land.

(Second embodiment)
The surf skateboard 1 according to the second embodiment has the same configuration as the first embodiment except that the surfboard 2 to be mounted is replaced with a simulated surfboard 4. That is, as described above, the surf skateboard 1 can be adapted to different types of surfboards 2, but it can also be attached to a simulated surfboard 4 instead of a surfboard 2 that can actually be used on water.

As shown in FIG. 8, the simulated surfboard 4 is formed into a plate shape. Preferably it is flat. Furthermore, as an example, it is formed into a streamlined shape that is wide on the front side and narrow on the rear side in plan view. The size of the simulated surfboard 4 is, for example, 1200 mm in length, 470 mm in width, and 12 mm in thickness. The simulated surfboard 4 is preferably made of wood. The wood used as the raw material is preferably European-grown plywood, more preferably Scandinavian oak plywood. For example, Scandinavian oak plywood with a thickness of 12 mm is formed by laminating seven veneers of the same thickness. A non-slip pad 4a is placed on the top surface of the simulated surfboard 4, and a hook-and-loop fastener 11a is placed on the bottom side. Furthermore, mark M1 is written as a reference for the mounting position. Using this mark M1 as a reference, the user can add the mark M by adjusting the position to suit the user. Even with such a configuration, effects similar to those of the above-described embodiment can be obtained. Of course, it is also possible to replace the mock surfboard 4 with another one having a different shape and size depending on the physique of the user.

FIG. 9 is a photograph taken of training using the prototype surf skateboard 1 of the first embodiment and the second embodiment. Through training using this prototype, we confirmed that it is possible to take off from paddling, stand up on a surfboard, and then practice body movements such as ups and turns, including rail work. Furthermore, we secretly tested the product on multiple monitors and were able to obtain favorable survey results.

In the above-described embodiment, a preferable example of the support plate 10 is made of wood, which has been confirmed to be effective in a prototype, but the material is not limited. Other examples include resin, carbon, and fiber reinforced plastic such as carbon fiber reinforced plastic (CFRP). That is, the support plate 10 is made of an elastic and lightweight material. The simulated surfboard 4 and the raising member 3 may also be made in the same manner. Furthermore, a set of tracks is not limited to two tracks. Furthermore, the position of the rear track 2B may also be made variable.

Although the present invention has been described in detail in accordance with specific embodiments, various substitutions, modifications, changes, etc. in form and details may be made to the present invention as defined by the claims. It will be apparent to those of ordinary skill in the art that anything may be done without departing from the spirit and scope.

1 Surf skateboard 11 Surface seal 2 Surfboard 2A, 2B Truck 20 Wheel 3 Raising member S Land surfboard

Claims (3)

a support plate formed in a flat plate shape with a length equal to or longer than the surfing stance width and attached to the longitudinal direction of the bottom surface of the surfboard;
The attachment position in the longitudinal direction of the bottom surface can be freely selected, and the upper surface of the support plate is removably surface-bonded to the bottom surface at the selected position , by a surface seal arranged along the longitudinal direction of the support plate. fixing means;
A set of tracks equipped with wheels that can be attached to the bottom surface of the support plate at a selectable distance by providing a plurality of sets of attachment holes in the longitudinal direction of the support plate ;
A surf skateboard comprising: a raising member interposed between the track and the support plate. The surf skateboard according to claim 1, wherein the fixing means are arranged on both sides of the longitudinal centerline of the support plate. the surfboard is replaceable;
The surf skateboard according to claim 1, wherein the fixing means can also be surface-attached to the bottom surface of a simulated surfboard instead of a surfboard used on water.

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