KR100719511B1 - Sub-marine propulsion device - Google Patents

Abstract

Underwater propulsion device according to the invention, the fluid is drawn in, the casing is formed with the opening opening, the rotating drum is installed in the inner space of the casing, is installed to extend to protrude from the outer peripheral surface of the rotating drum, the end is An expansion shaft adjacent to an inner circumferential surface of the casing, a flexible membrane attached to the expansion shaft, and a driving unit for allowing the rotating drum to rotate inside the casing, the length from one outer peripheral surface of the rotating drum to the inner surface of the casing; And the rotary drum are eccentrically installed so that the length from the outer peripheral surface of the other side of the rotary drum to the inner surface of the casing is different.

Submersible propellers, telescopic shafts, rotating drums

Description

Submersible propulsion device {SUB-MARINE PROPULSION DEVICE}

1 is a perspective view schematically showing an underwater propulsion device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

3 is a rear view taken along the line III-III of FIG. 2.

4 is a detailed view of portion A of FIG. 2.

FIG. 5 is a detailed view of part B of FIG. 3.

FIG. 6 is a side view taken along line VI-VI of FIG. 3.

7 is a cross-sectional view taken along the line VII-VII of FIG. 3.

8 is a partial cross-sectional view showing the connection structure of the casing and the expansion shaft.

9 is a side view showing an underwater propulsion device with a propeller according to the prior art.

<Description of the symbols for the main parts of the drawings>

100: underwater propulsion device 102: casing

104: opening 200: drive gear

201: drive shaft 202: intermediate gear

212a: first shaft 212b: second shaft

212c: third shaft 212d: fourth shaft

204: first driven gear 206: first rotating drum

208: second driven gear 210: second rotating drum

212: expansion shaft 214: flexible membrane

400: groove 402: roller

414: pin 700: elastic body

701: first support 702: second support

703: elastic guide 90: ship

91: propulsion shaft 92: propeller

The present invention relates to an underwater propulsion apparatus, and more particularly, to an underwater propulsion apparatus having a new structure mounted on a boat, a submarine or an underwater scooter, such that they easily move in the water.

Underwater propulsion systems are mainly used to make ships, boats or submarines maneuverable in water. There may be various ways to classify the devices used in the water or underwater, such as ships or submarines, but representative methods may be classified according to the type of propulsion of the underwater propulsion system, the material of the hull and the purpose of use.

Various types are used according to the propulsion type of the underwater propulsion system, but underwater propulsion devices using propellers are generally used.

Underwater propulsion with propellers is applied to marine and submarine as well as marine scooters for divers. In other words, the propeller underwater propulsion device is also used in the industrial, military and sports fields.

The propeller rotates at a predetermined speed by using the driving force supplied from the engine or the drive unit. The propellers move the fluid, so that the underwater propulsion device easily moves underwater.

9 is a side view showing an underwater propulsion device with a propeller according to the prior art.

As shown, the propulsion shaft 91 is installed at the rear of the ship 90, and the propeller 92 is mounted thereto. Although not shown in the figure, the propulsion shaft 91 is connected to an energy source such as a prime mover.

As the propulsion shaft 91 rotates, the vessel 90 can move forward or backward. The propeller 92 includes three to six blades disposed at an angle on the outer circumferential surface of the propulsion shaft 91.

When the propeller 92 rotates, the fluid moves in the first direction (x-axis direction in the drawing), and thus the vessel 90 moves to the right in the drawing. On the other hand, when the rotational speed of the propeller 92 increases, the fluid not only moves in the first direction (x-axis direction in the drawing) but also moves in the radial direction of the propulsion shaft 91 by centrifugal force. This phenomenon becomes more severe as the rotation speed of the propeller 92 is higher.

As the fluid moves in the radial direction, the power efficiency of the propeller 92 is lowered. In addition, when the rotational speed of the propeller 92 is increased, there is a problem that the noise and vibration is severe.

The fluid moves in the radial direction of the propulsion shaft 91, and thus the efficiency of the propeller 92 is lowered. There is a limit in preventing such a phenomenon.

In addition, the fluid is moved by the rotation of the propeller 92, wherein the propulsion shaft 91 is located where the fluid flows to increase the flow resistance of the fluid. Therefore, the power efficiency of the propeller 92 falls further.

The present invention has been devised to solve the above problems, the object of the present invention is to be mounted on a boat, submarine or underwater scooter, etc. so that they can easily move in the water as well as low noise and vibration, efficient operation and new It is to provide an underwater propulsion device having a structure.

In order to achieve the above object, the underwater propulsion device according to the present invention, the fluid is drawn in, the casing is formed with the opening opening, the rotating drum is installed in the inner space of the casing, extending to protrude from the outer peripheral surface of the rotating drum And an end portion includes an expansion shaft adjacent to an inner circumferential surface of the casing, a flexible membrane attached to the expansion shaft, and a driving unit for allowing the rotating drum to rotate inside the casing, and from the outer peripheral surface of one side of the rotating drum. The rotating drum is eccentrically installed so that the length from the outer peripheral surface of the rotating drum to the inner surface of the casing is different from the length to the inner surface of the casing.

The telescopic shaft includes a first shaft and a second shaft, the first shaft is an underwater propulsion device that is drawn into or out of the second shaft is elongated and contracted. Underwater propulsion unit is equipped with a roller at the end of the expansion shaft.

A groove is formed on the inner side of the casing, the underwater propulsion device that the roller is seated in the groove. A locking jaw is formed on an inner side of the casing, and the roller does not detach from the groove by the locking jaw.

The drive unit includes a drive shaft, a drive gear mounted to the drive shaft, a driven gear formed on one side of the rotary drum to rotate together with the rotary drum, and external to the drive gear, and energy supplying rotational force to the drive shaft. Underwater propulsion device comprising a source. The energy source comprises a prime mover or motor.

Underwater propulsion device comprising an elastic body for elastically supporting the expansion shaft to the inner surface of the casing. One end of the elastic body is supported by a first support portion, the other end is an underwater propulsion device is supported by a second support formed on the expansion shaft.

The elastic body is a water propulsion device is a spring in the form of a coil. Underwater propulsion device is installed inside the spring to the elastic guide to facilitate the contraction and extension of the spring.

At least two expansion shafts are installed, and the flexible membrane is attached to one of the expansion shaft and the other expansion shaft. The flexible membrane is an underwater propulsion device is fixed to the expansion shaft by a pin.

Two casings having fluid openings and openings formed therein, rotary drums respectively installed in the inner space of the casing, and extending so as to protrude from the outer circumferential surface of the rotating drum, and two end portions adjacent to the inner circumferential surface of the casing; Two expansion shafts, a flexible membrane attached to the expansion shaft and a drive unit for rotating the rotating drum inside the casing, the drive unit, a drive shaft, a drive gear mounted to the drive shaft, one of the one rotating drum A first driven gear formed on a side surface and rotating together with the rotary drum, the second driven gear being formed on one side of the other rotary drum and rotating together with the rotary drum, one side An intermediate gear circumscribed with the second driven gear and the other side circumscribed with the drive gear, and rotating on the drive shaft. To include an energy source for supplying.

DETAILED DESCRIPTION Embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail for the underwater propulsion device according to an embodiment of the present invention.

1 is a perspective view schematically showing an underwater propulsion device according to an embodiment of the present invention.

As shown in FIG. 1, the underwater propulsion device 100 includes a casing 102, which forms the appearance of the underwater propulsion device 100. The opening 102 is formed in the casing 102. The fluid (water) is moved through the opening 104. In the embodiment of the present invention, the fluid moves in the second direction (y-axis direction in the drawing), whereby the underwater propulsion device 100 moves in reverse.

In more detail, the opening 104 is formed on one side and the other side of the casing 102, respectively. The fluid is sucked into one opening 104 and the fluid is ejected to another opening 104. Accordingly, the underwater propulsion device 100 moves in the fluid (water). The power of the underwater propulsion device 100 is determined by the flow rate of the fluid moving through the opening 104.

In the embodiment of the present invention, as shown, two casings 102 are provided in the first direction (x-axis direction in the drawing). However, in other embodiments, there is no particular limitation on the position and number of casings 102.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.

As shown in FIG. 2, the underwater propulsion device includes a drive gear 200, a drive shaft 201, an intermediate gear 202, a first driven gear 204, a first rotating drum 206, and a second driven gear 208. ), The second rotating drum 210, the expansion shaft 212, the flexible membrane 214 and the casing 102.

The drive shaft 201 is installed, and the drive gear 200 is mounted thereto. Although not shown in the drawings, the drive shaft 201 is connected to an energy source such as a prime mover.

The prime meaning of Prime Mover is the device that generates the necessary power by using the energy source existing in the natural world. Currently used energy sources are physical energy such as hydro, wind, and geothermal energy and oil, coal and natural gas. And chemical energy, and recently, nuclear energy such as uranium. In the embodiment of the present invention, the prime mover includes the above-mentioned dictionary meanings, and also includes an artificial energy source such as electricity, compressed air, and hydraulic pressure.

The intermediate gear 202 is circumscribed on one side of the drive gear 200, and the first driven gear 204 is circumscribed on the intermediate gear 202. That is, the driving gear 200 is connected to one side of the intermediate gear 202 and the first driven gear 204 is connected to the other side.

A first rotating drum 206 is formed on one side of the first driven gear 204, and the first rotating drum 206 rotates together with the first driven gear 204. In addition, the expansion shaft 212 is formed perpendicular to the outer peripheral surface of the first rotary drum 206, the end of the expansion shaft 212 is supported on the inner surface of the casing 102.

A second rotating drum 210 is formed on one side of the second driven gear 208, and the second rotating drum 210 rotates together with the second driven gear 208. In addition, the expansion shaft 212 is formed perpendicular to the outer peripheral surface of the second rotary drum 210, the end of the expansion shaft 212 is supported on the inner surface of the casing 102.

As illustrated, the expansion shaft 212 is provided at the upper and lower portions of the first rotating drum 206, respectively. In addition, the expansion shaft 212 is provided on the upper and lower portions of the second rotary drum 210, respectively. A flexible membrane 214 (Web) is provided between the upper elastic shaft 212 and the lower elastic shaft 212.

The drive shaft 201 and the drive gear 200 rotate clockwise, and the intermediate gear 202 rotates counterclockwise. Accordingly, the first driven gear 204 and the first rotating drum 206 rotate clockwise. In addition, the expansion shaft 212 formed to protrude from the outer circumferential surface of the first rotating drum 206 also moves along the inner surface of the casing 102.

In addition, when the driving shaft 201 and the driving gear 200 rotate in the clockwise direction, the second driven gear 208 and the second rotating drum 210 rotate in the counterclockwise direction. In addition, the expansion shaft 212 formed in the second rotating drum 210 also moves along the inner surface of the casing 102.

3 is a rear view taken along the line III-III of FIG. 2.

As shown in FIG. 3, a first driven gear 204, a first rotating drum 206, and an expansion shaft 212 are installed inside the casing 102.

The telescopic shaft 212 includes a first shaft 212a, a second shaft 212b, a third shaft 212c and a fourth shaft 212d. The first shaft 212a is drawn into or withdrawn from the second shaft 212b, the second shaft 212b is drawn into or withdrawn from the third shaft 212c, and the third shaft 212c is connected to the fourth shaft 212d. Is withdrawn or withdrawn. Thus, the telescopic shaft 212 extends or shortens in length. Even if the expansion shaft 212 is moved, the end of the expansion shaft 212, that is, the end of the first shaft 212a is in close contact with the inner surface of the casing 102 to move.

In the inner space of the casing 102, the first rotating drum 206 is biased to one side. In the figure, the first rotating drum 206 is eccentric to the right.

As shown, when the expansion shaft 212 is in the 3 o'clock direction, the length of the expansion shaft 212 is called the first length L1, and the expansion shaft 212 is when the expansion shaft 212 is in the 9 o'clock direction. When the length of the second length (L2), the second length (L2) is larger than the first length (L1).

When the first rotating drum 206 rotates clockwise, when the expansion shaft 212 passes the 3 o'clock direction, when a small amount of fluid is moved downward, and the expansion shaft 212 passes the 9 o'clock position, Move a large amount of fluid up. Therefore, as a whole, the fluid moves in the second direction (y-axis direction in the drawing). Accordingly, the underwater propulsion device 100 is moved in a direction opposite to the second direction (y-axis direction in the drawing).

In the exemplary embodiment of the present invention, the casing 102 has a shape close to a circle, but may have a shape such as a semicircle or a quarter circle, and there is no particular limitation on the shape.

As shown in FIG. 3, the length of the telescopic shaft 212 repeats between the first length L1 and the second length L2, wherein the change in length of the telescopic shaft 212 is the first rotating drum 206. Depends on its location.

In more detail, when the first rotating drum 206 is installed to be close to the inner side of the casing 102, the second length L2 is long while the first length L1 is short. In some cases, the first length L1 may be zero.

Underwater propulsion device using a conventional propeller has a high noise and vibration because the propeller rotates at a high speed, there was a problem that often occurs cavitation (Cavitation). However, the underwater propulsion device according to the embodiment of the present invention is advantageous in terms of noise and vibration because the rotational speed of the rotating drum is relatively slow compared to the propeller. In addition, the movement direction of the underwater propulsion apparatus can be changed only by changing the rotation direction of the rotating drum.

4 is a detailed view of portion A of FIG. 2, and FIG. 5 is a detail view of portion B of FIG. 3.

As shown in FIGS. 4 and 5, the expansion shaft 212 includes a first shaft 212a and a second shaft 212b, and a roller 402 is mounted at an end of the first shaft 212a.

In addition, a groove 400 is formed on the inner surface of the casing 102. The roller 402 is seated in the groove 400, the expansion shaft 212 is easily moved inside the casing (102). In addition, since the roller 402 rotates along the inner surface of the groove 400, the expansion shaft 212 moves with little force.

The flexible membrane 214 is connected to the pins 414 on one side of the first shaft 212a and the second shaft 212b. Fluid is moved by the flexible membrane 214. In addition, the flexible membrane 214 is preferably elastic and flexible like rubber.

FIG. 6 is a side view taken along line VI-VI of FIG. 3.

As shown in FIG. 6, the casing 102 is formed with an opening 104 through which the fluid moves. Although not shown in the figure, the opening 104 may be additionally provided with a separate net to block foreign matter.

7 is a cross-sectional view taken along the line VII-VII of FIG. 3.

As shown in FIG. 7, the expansion shaft 212 includes a first shaft 212a, a second shaft 212b, and a fourth shaft, and an end of the first shaft 212a is equipped with a roller 402. In the inner surface of the casing 102, a groove 400 is formed. In addition, the elastic body 700 is provided in the inner space of the expansion shaft 212.

The elastic body 700 facilitates the contraction and extension of the expansion shaft 212. In more detail, the expansion shaft 212 is in close contact with the inner surface of the casing 102 by the elastic restoring force of the elastic body 700. That is, the roller 402 mounted on the first shaft 212a is in close contact with the inner side surface of the groove 400 of the casing 102.

One end of the elastic body 700 is supported by the first support part 701, and the other end of the elastic body 700 is supported by the second support part 702. In an embodiment of the present invention, the first support 701 is formed inside the first rotating drum 206, and the second support 702 is formed on the first shaft 212a.

According to the shape of the casing 102, the distance between the inner surface of the casing 102 and the first rotating drum 206 is changed, so that the expansion shaft 212 is easy to stretch and contract by the force of the elastic body 700. Will be repeated.

In the embodiment of the present invention, the elastic body 700 is a spring in the form of a coil, but is not particularly limited in form and material. In an embodiment of the present invention, an elastic guide 703 in the form of a shaft is installed inside the spring to facilitate the contraction and extension of the spring.

8 is a partial cross-sectional view illustrating a coupling structure of the casing 102 and the expansion shaft 212. FIG. 8 shows an embodiment similar to that of FIG. 7 but with a slightly different structure.

As shown in FIG. 8, a groove 400 is formed in the inner surface of the casing 102, and the roller 402 is located in the inner space of the groove 400. In addition, the locking jaw 800 is formed at one side of the groove 400. The locking jaw 800 prevents the roller 402 from being drawn out of the groove 400 of the casing 102.

The roller 402 is fixed to the end of the first shaft 212a. Thus, the expansion shaft 212 does not escape from the groove 400 formed in the inner side of the casing 102.

In addition, the expansion shaft 212 maintains a state adjacent to the inner surface of the casing 102 by the roller 402 seated in the groove 400.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As described above, according to the underwater propulsion device according to the present invention, the rotating drum is installed in the inner space of the casing and its outer circumferential surface is installed, the expansion shaft, the expansion shaft moves the fluid as the rotating drum rotates, the casing Through the opening formed in the fluid is sucked and ejected has the effect of facilitating the movement in the water.

In addition, since the rotating drum is installed inside the casing, there is a relatively low noise and vibration effect.

In addition, since the rotational speed of the rotating drum is relatively slow, there is little effect of noise and vibration.

In addition, simply changing the rotation direction of the rotary drum has the effect of easily adjusting the forward and backward of the underwater propulsion device.

In addition, a roller is provided at an end portion of the expansion shaft attached to the rotating drum, and the roller has an effect of easily moving the expansion shaft along the inner surface of the casing.

In addition, the groove in which the roller is seated on the inner surface of the casing has an effect of preventing the roller from being separated from the inner surface of the casing.

 In addition, the locking step formed in the groove has the effect of preventing the roller from being separated from the inner surface of the casing.

In addition, the elastic body has an effect that the end of the elastic shaft is in close contact with the inner surface of the casing.

Claims (14)

A casing in which fluid is introduced and an opening for drawing out is formed; A rotating drum installed in the inner space of the casing; An extension shaft installed so as to protrude from an outer circumferential surface of the rotating drum, and an end portion of the expansion shaft adjacent to an inner circumferential surface of the casing; A flexible membrane attached to the expansion shaft; And A driving unit for rotating the rotating drum inside the casing, The rotating drum is eccentrically installed so that the length from one outer peripheral surface of the rotary drum to the inner surface of the casing and the length from the other outer peripheral surface of the rotary drum to the inner surface of the casing is different. According to claim 1, The expansion shaft, An underwater propulsion device comprising a first shaft and a second shaft, wherein the first shaft is extended or contracted by being drawn into or withdrawn from the second shaft. According to claim 1, Underwater propulsion unit is equipped with a roller at the end of the expansion shaft. The method of claim 3, wherein The inner surface of the casing is formed with a groove, the roller is underwater propulsion device seated in the groove. The method of claim 4, wherein A locking jaw is formed on an inner side of the casing, and the roller does not detach from the groove by the locking jaw. According to claim 1, The driving unit, driving axle; A drive gear mounted to the drive shaft; A driven gear formed on one side of the rotating drum and rotating together with the rotating drum, the driven gear being external to the driving gear; And Underwater propulsion device comprising an energy source for supplying rotational force to the drive shaft. The method of claim 6, The energy source comprises a prime mover. According to claim 1, Underwater propulsion device comprising an elastic body for elastically supporting the expansion shaft to the inner surface of the casing. The method of claim 8, One end of the elastic body is supported by a first support portion, the other end is an underwater propulsion device is supported by a second support formed on the expansion shaft. The method of claim 8, The elastic body is a water propulsion device is a spring in the form of a coil. The method of claim 8, Underwater propulsion device is installed inside the spring to the elastic guide to facilitate the contraction and extension of the spring. According to claim 1, At least two expansion shafts are installed, and the flexible membrane is attached to one of the expansion shaft and the other expansion shaft. According to claim 1, The flexible membrane is an underwater propulsion device is fixed to the expansion shaft by a pin. Two casings formed with openings through which fluid is drawn in and drawn out; Rotary drums installed in the inner space of the casing; Two expansion shafts extending and installed so as to protrude from the outer circumferential surface of each of the rotating drums, and end portions of which are adjacent to the inner circumferential surface of the casing; A flexible membrane attached to the expansion shaft; And A driving unit for rotating the rotating drum inside the casing, The driving unit, driving axle; A drive gear mounted to the drive shaft; A first driven gear formed on one side of one of the rotary drums and rotating together with the rotary drums, the first driven gear being external to the driving gears; A second driven gear formed on one side of the other rotary drum to rotate together with the rotary drum; An intermediate gear having one side circumscribed with the second driven gear and the other side circumscribed with the drive gear; And Underwater propulsion device comprising an energy source for supplying rotational force to the drive shaft.

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