JPH04115995U - self-propelled surfboard - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a tail section with an inverted trapezoidal bottom, a bilge keel, no protrusion on the bottom, and good course keeping and maneuverability. be. [Configuration] Bottom 7 on a surfboard with propulsion device
The nose 4 has a wedge shape, the tail 5 has an inverted trapezoid shape, the bilge keel 14 is provided at the bottom, and the shapes intersect at the center to form a smooth sliding surface.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed by equipping a surfboard with a propulsion device to create a sports recorder that slides on the water surface. It concerns jar supplies.

0002

[Conventional technology]

Conventionally, this type of device has been used in conventional surfboards, as shown in FIGS. 5 and 6. A propulsion section 31 is buried in the main body of the drive 30, and an engine section 32 is mounted on the top of the propulsion section 31. , so-called to be mounted on the deck 35 of the surfboard 30.

0003 The shape of the main body of the surfboard 30 is such that the nose 37 is oval shaped when viewed from above. The tail 38 had a swallow shape (the shape of a swallow's tail). Is it the side? If you look closely, the rail 39 at the nose 37 section is slightly warped (rocker), and the mid section is slightly curved (rocker). and the rail 39 of the tail 38 was straight. In addition, the bottom 36 is connected to the nose 3 Part 7 is slightly wedge-shaped, and the mid part and tail part 38 are flat. The infin 33 was installed in a protruding manner to ensure course keeping during skiing.

0004 The propulsion unit 31 has an impeller installed therein, and has a suction port 4 that sucks water from the bottom 36 part. 0, and serves as an injection port 41 that injects into the tail 38.

[0005] The engine section 32 is mounted on the propulsion section 31 of the tail 38 section, and the drive shaft is mounted on the propulsion section 31 of the tail section. Connected to the peller. Also, the engine section 32 is installed on the deck 35. A cover 34 is provided for waterproofing and protection, and a cover 34 is provided to protrude from the deck 35. It has become.

[0006]

[Problem that the idea aims to solve]

As described in the conventional technology, when a propulsion surfboard slides, the nose part The bottom is slightly wedge-shaped, but as the nose rises, turning resistance disappears. It is said that the stability is poor, punching occurs, and smooth gliding conditions are not achieved. It had some problems. Furthermore, if punching occurs as described above, the rear suction Because the draft of the mouth is shallow, air bite occurs and the jet is not uniform, making it difficult to board the boat. It was.

[0007] The bottom part has twin fins that protrude, preventing it from running aground on the sandy beach when sliding. It was impossible to do so, and it also got in the way during transportation, so it was made to be removable.

[0008] This invention was made in view of such problems with the conventional technology. The purpose of this is to make the bottom of the tail part in an inverted trapezoid shape, and to create a bilge keel. , eliminating the protrusion on the bottom, and offering good course keeping and maneuverability. This is what we are trying to provide.

[0009]

[Means to solve the problem]

In order to achieve the above purpose, this invention has the bottom of the tail section shaped like an inverted trapezoid, A bilge keel is installed to prevent bottom damage and safety when the surfboard body slides. We are trying to improve course keeping performance and maneuverability by taking into account the ease of transportation. It is something that

0010

[Effect]

This idea is to make the bottom of the tail part into an inverted trapezoid shape when the surfboard body is sliding. , a bilge keel is installed to rectify the flow when traveling straight and maintain course-keeping performance. This is what we are trying to do.

[0011]

【Example】

To explain the embodiment using the drawings, as shown in FIGS. 1 to 4, the server A propulsion section 2 is buried in the rear part of the main body of the board 1, and an engine section 3 is installed above the propulsion section 2. It is equipped with a surfboard with a propulsion device.

0012 The shape of the main body of the surfboard 1 is such that the 4th part of the nose is oval shaped when viewed from the top. The 5th part of the tail is a double wing squash tail, and it can be seen from the side. If you look at it, you can divide the length of the surfboard into 4 equal parts, and from the 4th nose, 1/4 and 3/4. The rail 6 part at the position is raised and the rail 6 part at the 2/4 position is lowered. have.

[0013] In the bottom 7, the nose 4 part is wedge-shaped, the tail 5 part is an inverted trapezoid shape, Bilge keel 14 is installed at the bottom, and each shape intersects in the center for smooth sliding. forming a surface. In addition, the wedge shape of the 4th part of the nose is 25cm deep, and the scale is 25cm. 13, so that the wedge shape disappears at the center. Also, tail 5 part The inverted trapezoid shape is determined by considering the center of gravity and displacement, and is located 25 cm from the waterline 9. An inlet 10 is provided at the center so that the trapezoidal shape disappears at the center.

[0014] The 8th part of the deck is sloping forward in the vertical direction, and has a gentle arc shape in the horizontal direction. The situation is as follows. In addition, the tail 5 section is provided with a propulsion section 2 and an engine section 3. A smooth arc-shaped engine cover 11 is protruded from above the deck 8. .

[0015] The propulsion unit 2 is attached to the bottom 7 of the tail 5 of the surfboard 1 body, and is attached to the bottom 7 of the tail 5 of the surfboard 1 body. A pumper is installed inside, an intake port 10 is provided below, and an injection port 1 is provided in the center of the tail 5. 2 is piped from the propulsion section 2 and installed near the waterline.

[0016] The engine part 3 is mounted on the propulsion machine 2 in the tail 5 part, and the drive shaft is connected to the impeller. is connected to. In addition, there is an engine cover 11 on the top for waterproofing and protection. is provided.

[0017]

[Effect of the idea]

Since this invention is configured as described above, it produces the effects described below. The idea was to make the tail part into an inverted trapezoid shape and place the bilge keel at the bottom. It maintains course keeping properties, is less prone to breakage unlike fins, and has improved portability. have an effect.

[Brief explanation of drawings]

FIG. 1 schematically shows a side view of this device when it is sliding.

FIG. 2 schematically shows a plan view of the invention.

FIG. 3 is a schematic front view of the device;

FIG. 4 schematically shows a rear front view of the invention.

FIG. 5 schematically shows a side view of a conventional vehicle during sliding.

FIG. 6 schematically shows a conventional plan view.

[Explanation of symbols]

1 Surfboard 2 Promotion Department 3 Engine part 4 Nose 5 Tail 6 rail 7 Bottom 8 Deck 9 Waterline 10 Inlet 11 Engine cover 12 Nozzle 13 Skeg 14 Bilge Keel

Claims (1)

[Scope of utility model registration request] Claim 1: In a surfboard with a propulsion device, a propulsion section 2 is buried in the rear part of the main body of the surfboard 1, and an engine section 3 is mounted on the upper part of the propulsion section 2, and the bottom 7 has a nose 4 shaped like a wedge. This self-propelled surfboard is characterized in that the tail 5 has an inverted trapezoidal shape, the bilge keel 14 is provided at the bottom, and each shape intersects at the center to form a smooth sliding surface.