JPH04112164U - Spray prevention structure of air cushion boat - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To prevent spray S from ejecting from below the skirt 2 and entraining water. [Structure] In a device in which a spray prevention member is arranged between a finger 7 and a bag 6, the spray prevention member 9 is formed into a unit member 10 having a trapezoid shape with one side wider than the other and having a width of about two fingers, and a narrow one. I placed the wide ones on top of each other. [Effect] The spray that rises along the finger is caught by the spray prevention member, turned into a horizontal flow, and then flowed down to the spray side as a downward flow, so this prevention member does not contain a large amount of water and prevents spray. can.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a spray-preventing structure for air cushion boats suitable for high-speed cargo and passenger ships. It is related to

0002

[Conventional technology]

Air cushion boats generally have a skirt made of flexible material surrounding the bottom of the main body. high-pressure air is fed into this compartment to make it float, and The so-called hovercraft, which is propelled by a propulsion fan installed on top, is well known. Ru. That is, this air cushion boat has a main body 1 as shown in FIGS. 4 and 5. A skirt 2 made of a flexible material is arranged around the lower part to form a partition 3 at the lower part of the main body 1. The levitation fan 4 feeds high-pressure air into this compartment 3 to make it float. It is configured to operate a propulsion propeller 5 provided on the main body 1 for navigation. ing.

0003 The skirt 2 is then attached to the main body 1 of the air cushion boat as shown in FIG. The airbag 6 is fixed by a bolt, etc., and the upper edge is below this airbag 6. attached, and connected to the main body 1 or air bag 6 by a connecting cable 8 at another part. The finger 7 is made up of a By the way, with such a skirt structure, an air cushion boat can float At this time, a part of the compressed air supplied to the compartment 3 on the back side of the main body 1 flows under the finger 7. Water is ejected from the end, but at this time, the ejected air is accompanied by water droplets, creating a so-called ``spray''. This spray is blown up in front of the driver's window and wets the window glass. This caused difficulty in maneuvering the ship and caused discomfort to passengers as they were unable to see what was ahead. It is planned that the Therefore, between the airbag 6 and the finger 7, Installing a spray prevention member 9 that receives the spray and reverses the direction of the spray. has been proposed.

0004

[Problem that the idea aims to solve]

By the way, the spray prevention member 9 is continuously removed over the entire skirt 2. Since the air cushion boat is equipped with a The inside of the stopper member 9 is fully exposed to the spray, so this spray prevention part Water droplets may be included in the material 9, increasing the weight and reducing operational performance. It becomes.

[0005]

[Means to solve the problem]

The present invention solves the problems of the conventional spray prevention member 9 as described above. The anti-spray structure of air cushion boats is designed for By providing a skirt consisting of an air bag and fingers all around or at the front and back. In the air bag, a spray prevention member is arranged between the air bag and the finger. In a cushion boat, the spray prevention member has a length that covers the width of a few fingers. A plurality of unit members having a width and one end wider than the other end are connected in series and a first The wide part of the unit member is arranged so that the narrow part of the second unit member is adjacent to the wide part of the unit member. There is.

[0006]

[Effect]

According to this configuration, pressure air is ejected from the lower end of the finger 7 from within the compartment 3. Qi becomes a spray accompanied by water droplets, and the cross section expands into an arc shape due to floating air. The spray flow rises along the valley between fingers 7, but this spray flow is It is held down and guided laterally by this unit member, and from the end between this unit member. It is emitted downward. Therefore, the spray is not emitted upwards as in conventional devices. This prevents the driver's window from getting wet and causing poor visibility, and is spray proof. Since it is not held in the stopper member, there is no reduction in operational performance.

[0007]

【Example】

The spray prevention structure of the air cushion boat according to the present invention is based on Figures 1 to 3 below. An example of this will be described. FIG. 1 is a perspective view showing a part of the skirt 2, FIG. 2 is a front view thereof, and FIG. 3 is a perspective view. Ru. There is a spout on the outside of the skirt 2, which is composed of an air bag 6 and fingers 7. A ray prevention member 9 is attached. And this spray prevention member 9 has a plurality of units. It is constructed by arranging the positioning members 10 in series.

[0008] To be more specific, the unit member 10 has a length that covers the width L (FIG. 2) of the two fingers 7. and is formed in a kind of trapezoidal shape so that the width of one end 10a is larger than the width of the other end 10b. and its upper edge is attached below the airbag 6 with bolts 15 etc. In addition, its lower end is attached to the main body 1 or the air bag 6 by a rope 11. Ru. Each unit member 10 has a wide portion 10a overlapped with a narrow portion 10b at its end. It is installed so that In this case, preferably the wide portion 10a is located at the front of the main body 1. It is arranged so as to be located at the rear in the rearward direction.

[0009] In the spray prevention structure of the air cushion boat having the above-mentioned configuration, when the pressurized air for surfacing is supplied to the compartment 3, the spray S is ejected from the lower end of the finger 7 and entrains water droplets as shown in FIG. This spray S rises in the valley between the fingers 7. This rising spray S enters the unit member 10 installed below the airbag 6, is suppressed by the unit member 10, becomes a horizontal flow S ₁ at the bottom of the unit member 10, and most of it flows to the rear. Then, it is guided to the lower part of the front side of the finger 7 and flows down through the gap formed in the connecting portion of the plurality of unit members 10 .

[0010] The length L (FIG. 2) of the unit member 10 may be equivalent to the width of a small number of fingers 7, such as two or three, and the spray S received by this unit member 10 is The left and right sides of the unit member 10 are formed to have different widths so as not to flow into the unit member 10. This is because the spray S rising along the valley of the finger 7 is blocked by this unit member 10, and its flow direction is divided into a horizontal horizontal flow _S1 in the lateral direction and a downward flow _S2 at the end of this unit member 10. By doing so, it is possible to flow the spray S that rises along the finger 7 so as to collide with it.

[0011]

[Effect of the idea]

The anti-spray structure of the air cushion boat according to this invention can be applied all around the boat or at the front and back. In addition to providing a skirt consisting of an air bag and fingers, An air cushion boat with a spray prevention member placed between the back and fingers. the spray prevention member has a length that covers the width of a small number of fingers, and A plurality of unit members whose one end is wider than the other end are arranged in series, and the width of the first unit member is The narrow portions of the second unit members are arranged adjacent to each other.

0012 Therefore, the spray rises along the front of the finger and is ejected in front of the driver's seat. This eliminates the possibility of adverse effects on vessel operation, and also causes discomfort to passengers. Effects such as not only eliminating the need for air pollution, but also no deterioration in operational performance. has.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a spray prevention structure for an air cushion watercraft according to the present invention.

FIG. 2 is a front view of the spray prevention structure of the air cushion boat of the present invention.

FIG. 3 is a side view of the spray prevention structure of the air cushion boat of the present invention.

FIG. 4 is a side view of the air cushion watercraft.

FIG. 5 is a bottom view of the air cushion boat.

FIG. 6 is a side view of the airbag and finger combination.

[Explanation of symbols]

1 Main body 2 Skirt 3 Compartment 4 Levitation fan 5 Propulsion propeller 6 Air bag 7
Finger 8 Connecting rope 9 Spray prevention member
10 Unit member 11 Rope.

Claims (1)

[Scope of utility model registration request] Claim 1: An air cushion boat, in which a skirt consisting of an air bag and fingers is provided around the entire circumference of the boat or at the front and back, and a spray prevention member is arranged between the air bag and the fingers, wherein the spray prevention member is installed in a small number. A plurality of unit members each having a length covering the width of the finger and having one end wider than the other end are arranged in series, and the wide part of the first unit member is connected to the narrow part of the second unit member. The spray prevention structure of the air cushion boat is constructed by arranging the two adjacent to each other.