JP2915783B2 - Underwater fin structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater fin mounted on the outside of a vehicle such as a deep-sea probe, and more particularly to a lightweight underwater fin structure.

[0002]

2. Description of the Related Art As a conventional underwater fin structure, there is a structure shown in FIG. 7 (vertical sectional view of a vertical stable fin), in which a buoyancy member 22 is filled inside a skin layer 21 made of synthetic resin. Vertically stable fins, shaped like an airfoil, are
It is fixed to the running body S via 23. In addition, support bone 23
Is bonded and fixed to the buoyancy member 22 via a synthetic resin lining 24 covering the supporting bone 23, and is tightened by bolts 25. A material having a small specific gravity such as Syntactic (trade name) is used.

[0003]

In the conventional underwater fin structure as described above, a buoyancy member (core material) is filled in the outer skin layer 21 of the underwater fin, which increases the weight and the cost. This causes a problem. The present invention is intended to solve such a problem, and has an underwater fin structure in which the underwater fin can be firmly attached to a vehicle while reducing the weight of the underwater fin. The purpose is to provide.

[0004]

In order to achieve the above-mentioned object, the underwater fin structure of the present invention uses a composite material for an underwater fin mounted on a sailing body submerged in seawater via a metal supporting bone. An outer skin layer formed into an airfoil and having a hollow portion communicating with the outer water therein, and an extremely thick portion formed inside the outer skin layer so as to face each other are provided. The support bone is disposed so as to be sandwiched between the support bones, and a bolt nut is provided which penetrates the support bone and the enormous thick portion to secure the support bone to the outer skin layer. It is characterized by that.

The underwater fin structure according to the present invention is characterized in that the underwater fin is erected on a cruising body as a vertically stable fin, and is mounted on the vertically stable fin via a horizontal axis so that the blade angle can be adjusted. Is provided, and a thickened portion bulging outside the outer skin layer of the vertical stabilizing fin so as to face an inner rear edge portion of the horizontal stabilizing fin, and an inner side of the horizontal stabilizing fin extending along the thickened portion. A mounting bracket protruding from a rear edge portion and a horizontal stabilizing fin fixing bolt inserted into a bolt hole of the bracket and screwed into a female screw hole in the thickened portion of the vertical stabilizing fin are provided. .

Further, in the underwater fin structure of the present invention, the small hole for communicating the cavity inside the vertical stabilizing fin with the outside water is provided,
The vertical stable fin is formed so as to penetrate the outer skin layer at the upper end portion of the outer skin layer. Further, the underwater fin structure of the present invention is characterized in that a flange is provided at a lower end of the support bone for attaching the support bone to the navigation body.

[0007]

In the above-described underwater fin structure of the present invention, when a vehicle having the underwater fin structure is immersed into the sea from a mother ship or the like, the cavity inside the outer skin layer forming the underwater fin is formed with external water. Because of the communication, the air in the cavity is replaced with outside water. Therefore, even if this sailing body sinks deeply in the sea, the inner and outer pressures of the outer skin layer of the underwater fin are always balanced, so that the outer skin layer does not deform.

[0008] The underwater fin is attached to the marine vessel via a metal supporting bone, and the supporting bone is provided between the extremely thick portions facing each other inside the outer skin layer. Since it is clamped and tightened by bolts and nuts,
The underwater fins can be mounted on the marine vehicle extremely firmly while reducing the weight of the underwater fins as a whole by the hollow portion inside the outer skin layer.

When the underwater fin is erected as a vertical stabilizing fin on a cruising body, the horizontal stabilizing fin pivotally supported by the vertical stabilizing fin is adjusted to the inside of the horizontal stabilizing fin after its wing angle is adjusted. Through the mounting bracket that protrudes from the trailing edge, it is bolted to the enormous thickened portion outside the outer skin layer of the vertical stabilizing fin at the position facing the same bracket, so the horizontal stabilizing fin after the blade angle adjustment Fixation to the stable fins will be performed accurately.

Further, since a small hole is formed at the upper end portion of the outer skin layer of the vertical stable fin so as to penetrate the outer skin layer, the hollow portion inside the vertical stable fin when the vehicle is submerged is formed. The action of replacing the air with the outside water is performed very efficiently through the small holes. Then, the attachment of the support bone to the navigation body in the vertical stabilizing fin is firmly performed via the flange provided at the lower end of the support bone.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an underwater fin structure according to an embodiment of the present invention, FIG. 2 is a side view of the vertical stable fin, and FIG.
FIG. 4 is a sectional view taken along line B of FIG. 1;
FIG. 5 is a cross-sectional view taken along line C of FIG. 1, and FIG. 6 is a cross-sectional view taken along line D of FIG.

The underwater fin in the underwater fin structure of this embodiment is a vertical stable fin as shown in FIG. 1, FIG. 2 and FIG. It has a skin layer 1 and the inside of the skin layer 1 is a cavity 2 communicating with external water.

The vertical stabilizing fins are fixed to the cruising body S via the metal supporting bones 3, which are attached to the outer skin layer 1. Is performed as follows. That is, as shown in FIGS. 1 to 3, huge thick portions 1 a, 1 a formed to face each other inside the outer skin layer 1 are provided, and a support is provided between these huge thick portions 1 a, 1 a. As shown in FIG. 1 and FIG. 6, bolts and nuts 5 are arranged so that the bones 3 are sandwiched therebetween, and tighten and fix the supporting bones 3 to the outer skin layer 1. Are provided so as to pass through.

As shown in FIGS. 1, 2, 5 and 6, the vertical stabilizing fin is provided with a horizontal stabilizing fin 7 via a horizontal shaft 6 so that the blade angle can be adjusted. A large thickened portion 1b is formed outside the outer stable layer 1 of the vertical stable fin so as to face the inner rear edge of the horizontal stable fin 7, and the inner rear edge of the horizontal stable fin 7 extends along the thickened portion 1b. Bolt holes 8a and 8b are formed in the mounting bracket 8 (see FIG. 1) protruding from the portion.

The fixing bolts 10 inserted in the bolt holes 8a and 8b are selectively screwed into a plurality of sets of female screw holes 9a and 9b in a multi-stage shape in the thickened portion 1b of the vertical fin. The horizontal stability fin 7 is fixed after the blade angle is adjusted. Further, as shown in FIG. 4, a plurality (five in this embodiment) of which the internal cavity 2 communicates with the external water is provided on the upper end portion 1c of the outer skin layer 1 of the vertical stable fin.
Are formed so as to penetrate the outer skin layer 1 as air vent holes.

As described above, the vertical stable fins are fixed to the marine vehicle S through the metal supporting bones 3, and the lower ends of the supporting bones 3 are provided with mounting flanges 3a.
Is provided, and the support bone 3 is fixedly mounted on the frame structure F of the marine craft by the flange 3a. In order to increase the mounting strength of the flange 3a,
A bracket 4 is provided.

Since the underwater fin structure of this embodiment is configured as described above, the underwater fin S having the underwater fin structure is provided.
Is immersed into the sea from a mother ship or the like, because the cavity 2 inside the outer skin layer 1 forming the underwater fin communicates with the external water,
The air in the cavity 2 is replaced with outside water. Therefore, even if this craft S sinks deep underwater,
Since the inner and outer pressures of the outer skin layer 1 of the underwater fin are always balanced, the outer skin layer 1 is not deformed.

The underwater fin is attached to the vehicle S via a metal supporting bone 3 and between the huge thick portions 1a, 1a facing each other inside the outer skin layer 1. Since the supporting bone 3 is held between the fins and tightened by the bolts and nuts 5, the underwater fin can be mounted on the navigation body S extremely strongly while reducing the weight of the underwater fin as a whole.

When the underwater fins are erected on the marine vessel S as vertical stability fins, the horizontal stability fins 7 supported by the vertical stability fins are adjusted after their wing angles are adjusted. 7 is bolted to the thickened portion 1b bulging outward from the outer skin layer 1 of the vertical stabilizing fin at a position facing the bracket 8 via a mounting bracket 8 projecting from the inner rear edge of the blade 7. The subsequent horizontal stabilizing fin 7 can be properly fixed to the vertical stabilizing fin.

Further, a small hole 11 is formed in the upper end portion 1c of the outer stable layer 1 of the vertical stable fin so as to penetrate the outer synthetic layer 1, so that the vertical stable fin when the vehicle S is submerged is submerged. The action of replacing the air in the internal cavity 2 with the external water is performed very efficiently. The attachment of the support bone 3 to the running body S in the vertical stabilizing fin is firmly performed via the flange 3 a provided at the lower end of the support bone 3.

[0021]

As described in detail above, according to the underwater fin structure of the present invention, the following effects can be obtained. (1) Since the inside of the underwater fin is hollow, the overall structure is reduced in weight and the cost is reduced because the core material becomes unnecessary. (2) Since the cavity inside the outer skin layer forming the underwater fin is in communication with the external water, the air in the cavity is replaced by the external water, and the sailing body sinks deeply in the sea. However, since the inner and outer pressures of the outer skin layer of the underwater fin are always balanced, the outer skin layer does not deform. (3) The underwater fins are attached to the marine vehicle via metal supporting bones, and the supporting bones are sandwiched between huge thick portions facing each other inside the outer skin layer. Since the fins are tightened by the bolts and nuts, the underwater fins can be extremely firmly attached to the vehicle while the weight of the underwater fins is reduced as a whole by the hollow portion inside the outer skin layer. (4) When the underwater fins are erected on the marine vessel as vertical stability fins, the horizontal stability fins that are supported by the vertical stability fins, after adjusting the wing angle, are the inner trailing edge of the horizontal stability fins. Through the mounting bracket that protrudes from the part, it is bolted to the enormous thickened part outside the outer skin layer of the vertical stability fin at the position facing the bracket, so the vertical stability fin of the horizontal stability fin after adjusting the blade angle The fixation to is performed accurately. (5) Since a small hole is formed at the upper end of the outer skin layer of the vertical stable fin so as to penetrate the outer skin layer, air in the cavity inside the vertical stable fin when the vehicle is submerged The action of replacing with outside water is performed very efficiently. (6) The attachment of the support bone to the navigation body in the vertical fin is firmly performed via the flange provided at the lower end of the support bone.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an underwater fin structure as one embodiment of the present invention.

FIG. 2 is a side view of a vertical stable fin in the underwater fin structure of FIG.

FIG. 3 is a sectional view taken along line A in FIG.

FIG. 4 is a plan view taken along line B in FIG. 1;

FIG. 5 is a cross-sectional view taken along line C of FIG.

FIG. 6 is a sectional view taken along line D in FIG. 1;

FIG. 7 is a longitudinal sectional view of a conventional vertical fin.

[Explanation of symbols]

 Reference Signs List 1 outer skin layer 1a enormous thick portion 1b thickened portion 1c upper end portion of outer skin layer 2 cavity 3 support bone 3a mounting flange 4 bracket 5 bolt nut 6 horizontal shaft 7 horizontal stable fin 8 mounting bracket 8a, 8b bolt hole 9a, 9b Female threaded hole 10 Fixing bolt 11 Small hole F Frame structure of airframe S Aircraft body 21 Outer skin layer 22 Buoyancy member 23 Support bone 24 Lining 25 Bolt

Claims (4)

(57) [Claims] An underwater fin mounted on a sailing body submerged in seawater via a metal supporting bone, comprising an outer skin layer formed into an airfoil shape by a composite material and having a hollow portion communicating with external water inside. And a huge thick portion formed to face each other inside the outer skin layer, and the support bone is disposed so as to be sandwiched between these huge thick portions. An underwater fin structure, comprising: a bolt and a nut for fastening the bone through the supporting bone and the enormously thick portion to fix the bone to the outer skin layer. 2. The underwater fin structure according to claim 1, wherein the underwater fin is erected on a cruising body as a vertically stable fin, and is attached to the vertically stable fin via a horizontal axis so that a blade angle can be adjusted. A horizontal stabilizing fin is provided, a thickened portion enormous outside the outer skin layer of the vertical stabilizing fin facing the inner trailing edge of the horizontal stabilizing fin, and the horizontal stabilizing fin is arranged along the thickened portion. A mounting bracket protruding from the inner rear edge of the fin, and a horizontal stabilizing fin fixing bolt inserted into the bolt hole of the bracket and screwed into the female screw hole in the thickened portion of the vertical stabilizing fin are provided. Underwater fin structure. 3. The underwater fin structure according to claim 2, wherein the small hole for communicating the cavity inside the vertical stabilizing fin with external water is formed at the upper end portion of the skin layer of the vertical stabilizing fin. An underwater fin structure formed to penetrate. 4. The underwater fin structure according to claim 2, wherein a flange is provided at a lower end of the support bone for attaching the support bone to the marine vehicle. .