JP2009029214A - Propulsion device in fluid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a propulsion device in fluid improving propulsion efficiency by inclining at a prescribe angle by following a fluid flow and forming a recessed curved surface. <P>SOLUTION: This propulsion device has: a link mechanism 1; a rotary shaft 2 provided in the front end part of the link mechanism 1; a fixed plate 3 provided in the rear end part of the link mechanism 1; an upper part elastic member 4 for connecting an upper part of the rotary shaft 2 and an upper part of the fixed plate 3 in relation to the link mechanism 1; and a lower part elastic member 5 for connecting a lower part of the rotary shaft 2 and a lower part of the fixed plate 3 in relation to the link mechanism 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an in-fluid propulsion device that improves propulsion efficiency by tilting at a predetermined angle following a fluid flow and forming a concave curved surface.

  A conventional in-fluid propulsion device is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-6097 (Patent Document 1).

  This in-fluid propulsion device has a configuration in which a flexible membrane 4 is attached to a gutter frame 1 and the whole gutter frame 1 is attached to a rocking body 5 as shown in FIG. 1 of Japanese Patent Laid-Open No. 61-6097, for example. Have

  With this configuration, in the conventional in-fluid propulsion device, the entire frame 1 is swung in the left-right direction by the rocking body 5 (see pages 2 and 3 of the Japanese Patent Laid-Open No. 61-6097). 1 to 2 lines).

Accordingly, the principle of caudal fins such as fish (FIG. 6 of the present application) is applied so that the rod frame 1 is inclined at a predetermined angle with respect to the traveling direction, and a concave curved surface is formed with respect to the fluid flow. , Trying to get a big driving force.
JP 61-6097 A

  However, the in-fluid propulsion device disclosed in Japanese Patent Laid-Open No. 61-6097 has the following problems.

  That is, as described above, the prior art (FIG. 1 of Japanese Patent Laid-Open No. 61-6097) is flexible as a whole and is swung by a predetermined rocking body 5.

  Therefore, it is difficult to follow the fluid flow and tilt it to a desired angle, and a convex curved surface may be formed with respect to the fluid flow (FIG. 6A of this application). The power is reduced and the propulsion efficiency is extremely poor.

  An object of the present invention is to provide an in-fluid propulsion device that improves propulsion efficiency by inclining at a predetermined angle following a fluid flow and forming a concave curved surface.

  In order to solve the above-described problems, the present invention provides a link mechanism 1, a rotary shaft 2 provided at a front end portion of the link mechanism 1, and a rear of the link mechanism 1. The fixed plate 3 provided at the end, the upper elastic member 4 connecting the upper portion of the rotating shaft 2 and the upper portion of the fixed plate 3 with respect to the link mechanism 1, the lower portion of the rotating shaft 2 and the lower portion of the fixed plate 3 with respect to the link mechanism 1 And a means for in-fluid propulsion device characterized by having a lower elastic member 5 for connecting the two.

  As a subordinate claim of claim 1, as described in claim 2, the link mechanism 1 includes two first link members 1 </ b> A, a second link member 1 </ b> B, and a third link that are parallel to each other. It is comprised by member 1C and 4th link member 1D, and the edge part of each link member is couple | bonded via the pin, As described in Claim 3, 1st link member 1A which comprises the said link mechanism 1 and The rotation shaft 2 is provided via the first coupling portion 7 and the fixing plate 3 is provided via the second coupling portion 8 at the substantially central portion of the second link member 1B, respectively, as described in claim 4. The fixing plate 3 is orthogonal to the second link member 1B constituting the link mechanism 1 in the front-rear direction, and further, as described in claim 5, the upper elastic member 4 and the lower elastic member 5 Are each made of silicone rubber To provide a means of being.

  According to the configuration of the present invention, when the upper elastic member 4 and the lower elastic member 5 are formed of silicon rubber and the in-fluid propulsion device shown in FIG. 1 is immersed in water, for example, the water flow W1 (FIG. 4 (B )), The silicon rubbers 4 and 5 receive a rightward force in FIG. 4B, so that the silicon rubbers 4 and 5 rotate counterclockwise about the rotation shaft 2 at the front end. While the link mechanism 1 is inclined to a predetermined angle α, the link mechanism 1 is deformed from the original rectangular shape to a parallelogram (FIG. 4 (A) → FIG. 4 (B)). Since the orthogonal relationship that is the positional relationship of the rear end portions of the rubbers 4 and 5 with respect to the second link member 1B of the fixing plate 3 is invariant, the silicon rubbers 4 and 5 form a concave curved surface with respect to the water flow W1. It becomes the same as the state of FIG. Now Do propulsion force is obtained, increasing propeller efficiency.

  As described above, according to the present invention, an in-fluid propulsion device that improves the propulsion efficiency by tilting at a predetermined angle following the fluid flow and forming a concave curved surface is provided.

  Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.

  FIG. 1 is a perspective view of an in-fluid propulsion device according to the present invention.

  The in-fluid propulsion device shown in FIG. 1 has a link mechanism 1, and the link mechanism 1 includes two first link members 1A and 2B that are parallel to each other and a third link as shown in the figure. It consists of a member 1C and a fourth link member 1D, and is composed of a total of four link members, and the end portions of the link members 1A to 1D are connected by pins.

  The first link member 1A in front of the link mechanism 1 has a mounting portion 6 for mounting the illustrated in-fluid propulsion device on another device, for example, a hull (FIG. 3). 7 is provided.

  The upper and lower configurations of the link mechanism 1 are exactly the same. In the following description, the upper configuration (FIG. 2) will be mainly described in detail.

  As shown in the drawing, the rotary shaft 2 is interposed via a second coupling portion 8 at a substantially central portion of the first link member 1A and the second link member 1B constituting the link mechanism 1. The fixing plate 3 is provided.

  In other words, a first coupling portion 7 is provided at a substantially central portion of the first link member 1A, and the rotary shaft 2 is provided on the first coupling portion 7 upward.

  As shown in FIG. 2, the rotary shaft 2 includes a first shaft 2A and a hollow second shaft 2C into which the first shaft 2A is inserted. In the first shaft 2A, above and below the second shaft 2C. The stoppers 2D and 2B are attached to prevent the second shaft 2C from being detached from the first shaft 2A.

  In this case, the first shaft 2A is inserted into the hole a on the upper surface of the first coupling portion 7, and the front member 7A and the rear member 7B of the first coupling portion 7 are fastened with screws 11, thereby the first shaft 2A. Is fixed to the first coupling portion 7.

  Moreover, the 2nd coupling | bond part 8 is provided in the approximate center part of the 2nd link member 1B, and this 2nd coupling | bond part 8 is provided with the fixing plate 3 toward upper direction.

  The fixing plate 3 as a whole is substantially orthogonal to the first link member 1A extending in the left-right direction (X-axis direction) in the front-rear direction (Y-axis direction), that is, disposed at 90 °. (FIG. 4A).

  As shown in FIG. 2, the fixed plate 3 includes a vertical plate 3 </ b> A, and the vertical plate 3 </ b> A is provided on the mounting portion 9, and the mounting portion 9 is connected to the second coupling portion 8 via the fixed shaft 10. Is provided.

  In this case, the vertical plate 3A is fixed by tightening the left member 9A and the right member 9B with the screw 12 while being in contact with the stepped portion 16 of the left member 9A and the right member 9B of the mounting portion 9. Yes.

  The fixed shaft 10 is inserted into a hole (not shown) on the lower surface of the attachment portion 9 and b on the upper surface of the second coupling portion 8, and the left member 9 </ b> A and the right member 9 </ b> B of the attachment portion 9 are screwed 13. , 14, and the front member 8 </ b> A and the rear member 8 </ b> B of the second coupling portion 8 are fastened by screws 15.

  On the other hand, with respect to the link mechanism 1 (FIG. 1), an upper elastic member 4 is provided on the upper portion of the rotating shaft 2 and the upper portion of the fixed plate 3, and the upper elastic member 4 is made of, for example, silicon rubber. ing.

  In this case, the front end portion of the silicon rubber 4 is attached to a second shaft 2C that is rotatable with respect to the first shaft 2A of the rotating shaft 2, and the rear end portion of the silicon rubber 4 is fixed to the fixed shaft. The plate 3 is attached to a vertical plate 3A.

  Similarly, with respect to the link mechanism 1 (FIG. 1), a lower elastic member 5 is provided at the lower portion of the rotating shaft 2 and the lower portion of the fixed plate 3, and the lower elastic member 5 is made of, for example, silicon rubber. In this case, the front end portion of the silicon rubber 5 is attached to a second shaft 2C that is rotatable with respect to the first shaft 2A of the rotating shaft 2, and the rear end portion of the silicon rubber 5 is The fixing plate 3 is attached to the vertical plate 3A.

  The operation of the present invention having the above configuration will be described below.

  When the link mechanism 1 constituting the in-fluid propulsion device shown in FIG. 1 is immersed in a fluid, for example, in water, the following operation is performed by the water flow W1 (FIG. 4B).

  That is, due to the water flow W1 (FIG. 4B), the silicon rubbers 4 and 5 disposed on the upper and lower portions of the link mechanism 1 (FIG. 1) constituting the present invention are moved to the right in FIG. 4B. Receive the power of

  When the silicon rubbers 4 and 5 receive a rightward force, the silicon rubbers 4 and 5 are inclined counterclockwise about the rotation shaft 2 at the front end portion, thereby being inclined at a predetermined angle α.

  Since the silicon rubbers 4 and 5 are fixed to the link mechanism 1 via the fixing plate 3 at the rear end, when the silicon rubbers 4 and 5 rotate counterclockwise, the third link of the link mechanism 1 Both the member 1C and the fourth link member 1D rotate counterclockwise, and accordingly, the second link member 1B moves to the right in parallel with the first link member 1A.

  As a result, the link mechanism 1 is deformed from the original rectangle into a parallelogram (FIG. 4A → FIG. 4B).

  However, even if the entire link mechanism 1 is deformed in this manner, the orthogonal relationship that is the positional relationship of the rear end portions of the silicon rubbers 4 and 5 with respect to the second link member 1B of the fixing plate 3 is not changed. As described above, the silicon rubbers 4 and 5 form a concave curved surface with respect to the water flow W1, and become the same as the state of FIG. 6C in the principle diagram, so that an extremely large propulsive force can be obtained. Yes.

  At this time, the water flow W1 inside the concave curved surface of the silicon rubbers 4 and 5 (FIG. 5) is pressed to the lower left side toward the paper surface of FIG. 5, and as a reaction, the silicon rubbers 4 and 5 have an upper right force F. Receive.

  The vertical component L of the force F at the upper right is lift, and this is the driving force of the present invention, and as described above, a very large driving force can be obtained, and the horizontal component R is resistance, and silicon The rubbers 4 and 5 are rotated counterclockwise.

  The above operation is the operation of the present invention based on the water flow W1 from the left (FIG. 4B), but the same applies to the case based on the water flow W2 from the right shown in FIG. The same operations and effects as in FIG.

  INDUSTRIAL APPLICABILITY The present invention is extremely useful because it is used in an in-fluid propulsion device that improves propulsion efficiency by tilting at a predetermined angle following the fluid flow and forming a concave curved surface.

1 is a perspective view of an in-fluid propulsion device according to the present invention. 1 is an exploded perspective view of an in-fluid propulsion device according to the present invention. It is a top view of the in-fluid propulsion device by the present invention. It is operation | movement explanatory drawing of the propulsion apparatus in a fluid by this invention. It is a figure which shows the force which acts on the propulsion apparatus in a fluid by this invention. It is a general explanatory view showing the relationship between the deformed shape of the caudal fin and the magnitude of lift.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Link mechanism 1A 1st link member 1B 2nd link member 1C 3rd link member 1D 4th link member 2 Rotating shaft 3 Fixing plate 4 Upper elastic member 5 Lower elastic member 6 Mounting part 7 1st coupling part 8 2nd coupling part 9 Mounting part 10 Fixed shaft 11-15 Screw

Claims (5)

  A link mechanism, a rotary shaft provided at the front end of the link mechanism, a fixed plate provided at the rear end of the link mechanism, and an upper elasticity connecting the upper part of the rotary shaft and the upper part of the fixed plate with respect to the link mechanism An in-fluid propulsion device comprising: a member, and a lower elastic member that connects the lower portion of the rotating shaft and the lower portion of the fixed plate with respect to the link mechanism.   The link mechanism includes two first link members and a second link member that are parallel to each other, and a third link member and a fourth link member, and end portions of the link members are coupled via pins. The in-fluid propulsion device according to claim 1.   The rotating shaft is provided via the first coupling part and the fixing plate is provided via the second coupling part at substantially the center of the first link member and the second link member constituting the link mechanism. 3. The in-fluid propulsion device according to 1 or 2.   The in-fluid propulsion device according to claim 3, wherein the fixing plate is orthogonal to the second link member constituting the link mechanism in the front-rear direction.   The in-fluid propulsion device according to claim 1, wherein the upper elastic member and the lower elastic member are each formed of silicon rubber.

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