JPH05178269A - Inter-flap connecting mechanism for hydrofoil - Google Patents

Abstract

PURPOSE:To prevent the fatigue breakage of a key metal by providing an inter-flap connecting mechanism with a parallelopiped-shape key metal projectingly installed on the edge surface of one flap and a keyway formed on the edge surface of the other flap, and installing semicylindrical sleeves on the upper and lower surfaces of the key metal. CONSTITUTION:In a hydrofoil of hydrofoil craft, the basic edge parts of a plurality of flaps 2-4 are pivotally installed on the hydrofoil main body 1 by a hinge pin 8, and the flap 2 on the innermost side is turned by a link mechanism installed in a strut 10. As the inter-flap connecting mechanism of the hydrofoil, a key metal 7 having a parallelopiped shape is projectingly installed on one of the continuously opposed edge surfaces of respective flaps, and a pair of sleeves 5 each having a semicylindrical shape are installed in a slidable manner on the upper and lower surfaces of the key metal 7. Further, a keyway 6 in which the key metal 7 is fitted is formed on the other of the opposed edge surfaces, and a circular recessed part 6a into which the sleeve 5 can be fitted is formed in the keyway 6. Accordingly, the relative movement between the flaps can be absorbed, and the fatigue breakage of the key metal 7 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrofoil of a hydrofoil, and more particularly to a coupling mechanism between a plurality of flaps of the hydrofoil.

[0002]

2. Description of the Related Art Generally, in a hydrofoil of a hydrofoil, as shown in FIG. 6, a plurality of flaps 11, 12, 13 are rotatably attached to a hydrofoil body 11a at their base ends. When the innermost flap 13 is rotationally driven by the drive mechanism 17, the movement is transmitted to the adjacent flap 12, and the flap 11
The flaps are sequentially transmitted to each flap so that the flaps can simultaneously rotate by the same amount.

Therefore, conventionally, three flaps 11, 12, 13 are used.
Is provided with a connecting mechanism composed of a key hardware and a key groove on each adjacent end face.

That is, as shown in FIGS. 7 and 8, a key metal fitting 14 is provided on the surface of the flap 12 adjacent to the flap 13 while a key metal fitting 14 is provided on the surface of the flap 13 adjacent to the flap 12.
A key groove 15 into which 15 can be inserted is formed, and an interlocking mechanism of both flaps is configured.

A key liner 16 made of a wear resistant material is fitted between the key hardware 14 and the key groove 15 in order to prevent the key hardware 14 and the key groove 15 from being directly contacted with each other.

[0006]

By the way, in the conventional structure, the key metal article 14, the key liner 16 and the key groove 15 have a plane contact structure as described above, and a structure capable of absorbing an angle change between the flaps. Is not.

Therefore, when the hull of the hydrofoil is small and the load acting on the flaps is small, the relative motion between the flaps (caused by the deformation of the flaps) is small and the conventional structure can be used, but the hull becomes large and the flaps are large. When the load acting on the flap becomes large, the relative movement between the flaps also becomes large, and the conventional structure cannot absorb this movement. As a result, there is a possibility that problems such as fatigue damage of the key hardware and increased wear of the key liner may occur.

The present invention is intended to solve such a problem. In the flap connecting structure of the hydrofoil, the key groove is formed to have a circular cross-section while the key groove and the key metal fitting are formed. By inserting a semi-cylindrical sleeve between them and allowing sliding and rotation between both flaps, it is possible to control fatigue fracture of key hardware and wear of key liner. An object is to provide a connecting mechanism between flaps of a wing.

[0009]

In order to achieve the above-mentioned object, the hydrofoil flap-to-flap connecting mechanism of the present invention has a hydrofoil body and a base end portion rotatably attached to the hydrofoil body. A plurality of flaps and a connecting mechanism between adjacent flaps are provided, and the connecting mechanism has a rectangular parallelepiped key metal member projecting from the end surface of one of the flaps and the end surface of the other of the flaps. And a pair of semi-cylindrical sleeves are slidably mounted on the upper and lower surfaces of the key metal piece, respectively, and the key groove is inserted into the key groove. It is characterized in that circular recesses into which a cylindrical sleeve can be inserted are continuously provided.

[0010]

In the hydrofoil inter-flap coupling mechanism of the present invention described above, of the relative movements between the flaps, movements in the horizontal plane can be absorbed by sliding between the key metal member and the semi-cylindrical sleeve, and the angle changes. With respect to the above, the sleeve can be absorbed by rotating the sleeve together with the key hardware in the circular key groove.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flap interlocking mechanism for hydrofoils as an embodiment of the present invention will be described below with reference to the drawings.
Is a perspective view showing the hydrofoil, FIG. 2 is a front view of the hydrofoil, and FIG.
Is an exploded perspective view of the inter-flap connecting mechanism, FIG. 4 is a sectional view taken along the line AA of FIG. 1, and FIG. 5 is a sectional view showing a modified example corresponding to FIG.

Also in the hydrofoil main body 1 of this embodiment, three flaps 2, 3 and 4 are rotatably attached at their base ends by a hinge pin 8, and the innermost flap 2 is provided.
Is driven to rotate as shown by an arrow by a metal object 10a which is moved by a link mechanism mounted in the strut 10.

In order to transmit the rotation of the flap 2 to the adjacent flap 3, a connecting mechanism described below is provided.

In FIGS. 3 and 4, a rectangular parallelepiped key metal fitting 7 is provided on the end surface of the flap 2 adjacent to the flap 3, and a pair of semi-cylindrical sleeves 5 and 5 are provided on the upper and lower surfaces of the key metal fitting 7. Each is slidably mounted.

On the other hand, a key groove 6 into which a key metal 7 can be inserted is formed on an end surface of the flap 2 adjacent to the flap 3, and a circular shape into which a pair of semi-cylindrical sleeves 5 and 5 can be inserted into the key groove 6. The recesses 6a are continuously provided.

Then, the sleeves 5 and 5 and the key hardware 7 are fitted into the key groove 6 so that the flap 2 and the flap 3 are connected to each other.

The flaps 3 and 4 are also connected to each other via a connecting mechanism having substantially the same structure.

In the above structure, when the hydrofoil is deformed as shown by the one-dot chain line in FIG. 2, the relative movement (a) in the horizontal plane caused by the deformation is the key metal 7 and the semi-cylindrical shape. It is absorbed by sliding between the sleeves 5 and 5. The angle change (b) is absorbed by the sleeves 5 and 5 rotating together with the key metal 7 in the circular recess 6a.

In the example shown in FIG. 4, a sleeve 5 made of a copper alloy in which a solid lubricant is embedded is used to cope with the above sliding or rotation. In a modification, a Teflon (trade name) base liner 9 is attached to each of the inner surface and the outer surface of the sleeve 5 and the surfaces of the key metal 7 and the key groove 6 that are in contact with the both surfaces, so that sliding or rotation can be performed smoothly. It is like this.

The Teflon-based liner 9 may be attached to only one of the opposing surfaces.

[0021]

As described in detail above, according to the inter-flap flap connecting mechanism of the hydrofoil of the present invention, the following effects and advantages are obtained. (1) The relative movement between the flaps can be absorbed, and the fatigue breakage of the key metal can be prevented. (2) Since the sliding area can be increased, the surface pressure can be reduced and the amount of wear can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a hydrofoil provided with an inter-flap coupling mechanism of a hydrofoil as an embodiment of the present invention.

FIG. 2 is a front view of the hydrofoil.

FIG. 3 is an exploded perspective view showing the connecting mechanism.

FIG. 4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a cross-sectional view showing the modified example corresponding to FIG. 4.

FIG. 6 is a plan view of a conventional hydrofoil.

7 is a cross-sectional view taken along the line BB of FIG.

8 is a sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Hydrofoil body 2,3,4 flaps 5 Semi-cylindrical sleeve 6 Key groove 6a Circular recess 7 Key hardware

Claims (1)

[Claims] 1. A hydrofoil comprising a hydrofoil body, a plurality of flaps whose base ends are rotatably attached to the hydrofoil body, and a coupling mechanism between adjacent flaps. , The connecting mechanism has a rectangular parallelepiped key metal piece projectingly provided on one end surface of the flap, and a key groove formed on the other end surface of the flap into which the key metal article can be inserted. The semi-cylindrical sleeves are slidably mounted on the upper and lower surfaces of the key hardware, and the key groove is provided with a series of circular recesses into which the pair of semi-cylindrical sleeves can be inserted. The feature is the connecting mechanism between the flaps of the hydrofoil.