NO20170735A1

NO20170735A1 - Gear-Coupling type steering apparatus and steering method using same

Info

Publication number: NO20170735A1
Application number: NO20170735A
Authority: NO
Inventors: Sung Ha Park; Nam Sick Kang; Joon Je Cho
Original assignee: Fluid Power Tech Korea
Priority date: 2014-12-15
Filing date: 2017-05-04
Publication date: 2017-05-04
Also published as: WO2016099023A1; JP2017537834A; DE112015005611T5; KR101538895B1; CN107074335A; JP6512523B2

Description

GEAR-COUPLING TYPE STEERING APPARATUS AND STEERING METHOD USING SAME

[Technical Field]

The present invention relates to a steering apparatus and method, and more particularly, to a steering apparatus and method that is capable of driving a tiller and a rudder stock operating a rudder by means of a gear part, thereby requiring a simpler configuration than a configuration in a conventional practice, reducing manufacturing costs, and improving a quality of product.

In addition, the present invention relates to a steering apparatus and method that is capable of driving a tiller and a rudder stock by means of a gear part, so that there is no limitation in a steering angle and it is possible to maintain a constant steering force over an entire range.

[Background Art]

Geneally, as shown in FIG.l, a steering appratus for a ship includes a rudder (not shown) and a rudder stock RS on which the rudder is mounted.

At this time, the rudder stock RS is fixedly inserted into a tiller T, and if it is desired to change a steering angle, the tiller T is operated to rotate the rudder stock RS, so that the angle of the rudder is adjusted to allow the steering angle to be changed.

In a conventional practice, by the way, a ram cylinder using a hydraulic pressure has been used to drive the rudder stock RS or the tiller T. According to the conventional practice, a large steering force may be easily generated from the hydraulic pressure, but a lot of pipes for generating the hydraulic pressure are needed, which makes the configuration complicated, causes a high failure rate, and makes it hard to conduct maintenance. Further, the range of the steering angle is just within a maximum of ±45°, which is very small.

So as to solve the above-mentioned problems occurring in the conventional practice, on the other hand, the ram cylinder has been recently replaced with a nut and a screw, and the nut rotates by means of an electric motor.

In this case, however, the efficiency of a screw jack is very low to undesirably cause a large amount of energy to be consumed, and besides, such problems the RAM cylinder has like a small range of steering angle and the difficulties in installation still exist.

On the other hand, the above-mentioned steering apparatuses themselves are widely known in the art, and they are in detail described in the following prior art documents. For the brevity of the description of the invention, accordingly, repeated explanations and illustrations will be avoided.

[Prior Art Document]

[Patent Documents]

(Patent document 1) Japanese Patent Application Laid-open No. 2002-211490

(Patent document 2) Japanese Patent Application Laid-open No. 2001-018893

(Patent document 3) Japanese Patent Application Laid-open No. 2001-055196

(Patent document 4) Japanese Patent Application Laid-open No. 1996-034396

(Patent document 5) Japanese Patent Application Laid-open No. 1996-207894

(Patent document 6) Korean Patent No. 10-1433835

(Patent document 7) Korean Patent No. 10-1431931

(Patent document 8) Korean Patent No. 10-1422499

(Patent document 9) Korean Patent No. 10-1313162

(Patent document 10) Korean Patent No. 10-0700057 (Patent document 11) Korean Patent No. 10-0429067

[Disclosure]

[Technical Problem]

Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a steering apparatus and method that is capable of driving a tiller operated cooperatively with a rudder stock by means of a gear part, thereby requiring a simpler configuration than a configuration in a conventional practice, reducing manufacturing costs, and improving a quality of product.

It is another object of the present invention to provide a steering apparatus and method that is capable of driving a tiller and a rudder stock by means of a gear part, so that there is no limitation in a steering angle and it is possible to maintain a constant steering force over an entire range.

[Technical Solution]

To accomplish the above-mentioned objects, according to a first aspect of the present invention, there is provided a gear-coupling type steering apparatus håving a rudder stock RS on which a rudder is mounted and a tiller T with which the rudder stock RS is operated cooperatively, the steering apparatus including: a gear part 200 disposed on one side of the tiller T to drive the tiller T; and driving parts 100 gear-coupled to one side of the gear part 200 to rotate the gear part 200.

At this time, the gear part 200 makes use of a ring gear or a slewing bearing 220 for inserting the tiller T into the center thereof.

Further, if the gear part 200 has teeth formed on the outer peripheral surface thereof, the driving parts 100 are gear-coupled to the outer peripheral surface of the gear part 200, and if the gear part 200 has teeth formed on the inner peripheral surface thereof, the driving parts 100 are gear-coupled to the inner peripheral surface of the gear part 200.

Furthermore, the gear part 200 is the slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an inner ring 222 supported against a base B and an outer ring 221 operated cooperatively with the tiller T and håving teeth formed on the outer peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220.

Also, the gear-coupling type steering apparatus according to the present invention further includes brackets 300 disposed on one side of the base B to support the driving parts 100 thereagainst, each bracket 300 håving a vertical member 310 disposed on the base B in a vertical direction and a horizontal member 320 disposed on a portion of the vertical member 310 in a horizontal direction to allow each driving part 100 to be located on the outer ring 221, a portion of the horizontal member 320 being open to pass a portion of the driving part 100 therethrough so that the portion of the driving part 100 is gear-coupled to the outer ring 221 of the slewing bearing 220.

Also, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to be operated cooperatively with the outer ring 221 of the slewing bearing 220.

Moreover, the gear part 200 is a slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an outer ring 221 supported against the base B and håving teeth formed on the outer peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being disposed on one side of the tiller T in such a manner as to be operated cooperatively with the tiller T and gear-coupled to the outer ring 221 to allow the outer ring 221 to be operated cooperatively with the rudder stock RS.

In addition, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and the mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to mount the driving parts 100 thereon, so that the driving parts 100 are mounted on the mounting plate T2 in such a manner as to be operated cooperatively with the mounting plate T2, and portions of the driving parts 100 pass through the mounting plate T2 in such a manner as to be gear-coupled to the outer ring 221 of the slewing bearing 220.

Further, the gear part 200 is a slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an inner ring 222 supported against the base B and teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being disposed on one side of the tiller T in such a manner as to be gear-coupled to the inner ring 222 of the slewing bearing 220.

In this case, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl, and the driving parts 100 are mounted on the mounting plate T2, while portions of the driving parts 100 being passing through the mounting plate T2 in such a manner as to be gear-coupled to the inner periphery of the inner ring 222 of the slewing bearing 220.

Further, the gear part 200 is a slewing bearing 220 disposed on the top of the tiller T, the slewing bearing 220 håving an inner ring 222 operated cooperatively with the tiller T and teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100 and an outer ring 221 supported against the base B, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being spaced apart from each other on one side of the tiller T in such a manner as to be gear-coupled to the inner peripheral surface of the inner ring 222 of the slewing bearing 220.

Also, the gear-coupling type steering apparatus according to the present invention further includes brackets 400 disposed on one side of the base B to allow the driving parts 100 to be located on the top of the tiller T, each bracket 400 håving a vertical member 410 disposed on one side of the base B in a vertical direction and a horizontal member 420 disposed on one side of the vertical member 410 in a horizontal direction in such a manner as to be disposed on the top of the tiller T to allow each driving part 100 to be located on the top of the tiller T, a portion of the horizontal member 420 being open to pass a portion of the driving part 100 therethrough so that the portion of the driving part 100 is gear-coupled to the inner ring 222 of the slewing bearing 220.

At this time, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl, the mounting plate T2 being disposed on the underside of the slewing bearing 220 in such a manner as to be operated cooperatively with the inner ring 222 of the slewing bearing 220.

Further, the gear-coupling type steering apparatus according to the present invention further includes support parts 700 disposed on the base B to support the undersides of the brackets 400 thereagainst and stoppers SP protruding from one side of the support parts 700 toward the underside of the tiller T.

Furthermore, the horizontal member 320 or 420 is detachably coupled to the vertical member 310 or 410.

Additionally, each driving part 100 includes an electric motor 110 for generating a rotational force and a decelerator 120 coupled to the electric motor 110 to rotate a shaft 130 gear-coupled to the gear part 200.

Also, the decelerator 120 makes use of a planetary gear.

Moreover, the gear-coupling type steering apparatus according to the present invention further includes a lubricant supply part F disposed on one side of each shaft 130 gear-coupled to the gear part 200, and a lubricant stored in the lubricant supply part F is supplied to the coupled portion between the shaft 130 and the gear part 200.

Further, the driving parts 100 of an even number are disposed to face each other.

Furthermore, the rudder stock RS is inserted into the tiller T and then fixed to the tiller T by means of a fastening part 600 disposed on the top of the tiller T.

To accomplish the above-mentioned objects, according to a second aspect of the present invention, there is provided a steering method using the steering apparatus according to the present invention, including the steps of: rotating the gear part 200 gear-coupled to the driving parts 100 to rotate the tiller T; and rotating the rudder stock RS operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.

To accomplish the above-mentioned objects, according to a third aspect of the present invention, there is provided a steering method using the steering apparatus according to the present invention, including the steps of: rotating the outer ring 221 by means of the driving parts 100 in the state where the inner ring 222 of the slewing bearing 220 is supported against the base; rotating the tiller T operated cooperatively with the outer ring 221 rotating; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.

To accomplish the above-mentioned objects, according to a fourth aspect of the present invention, there is provided a steering method using the steering apparatus according to the present invention, including the steps of: fixedly supporting the outer ring 221 of the slewing bearing 220 against the base B in such a manner as to be gear-coupled to the driving parts 100 and driving the driving parts 100 with respect to the outer ring 221 fixed to rotate the driving parts 100; allowing the tiller T on which the driving parts 100 are disposed to be operated cooperatively with the driving parts 100 to rotate the tiller T; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.

To accomplish the above-mentioned objects, according to a fifth aspect of the present invention, there is provided a steering method using the steering apparatus according to the present invention, including the steps of: fixedly supporting the inner ring 222 of the slewing bearing 220 against the base B in such a manner as to be gear-coupled to the driving parts 100 and driving the driving parts 100 with respect to the inner ring 222 fixed to rotate the driving parts 100; allowing the tiller T on which the driving parts 100 are disposed to be operated cooperatively with the driving parts 100 to rotate the tiller T; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.

To accomplish the above-mentioned objects, according to a sixth aspect of the present invention, there is provided a steering method using the steering apparatus according to the present invention, including the steps of: supporting the outer ring 221 of the slewing bearing 220 against the base B, allowing the inner ring 222 of the slewing bearing 220 to be gear-coupled to the driving parts 100, and rotating the inner ring 222 by means of the driving parts 100; rotating the tiller T operated cooperatively with the inner ring 222 through the rotation of the driving parts 100; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.

Characteristics and advantages of the present invention will be more clearly understood from the detailed description as will be described below and the attached drawings.

All terms used herein, including technical or scientific terms, unless otherwise defined, have the same meanings which are typically understood by those håving ordinary skill in the art. The terms, such as ones defined in common dictionaries, should be interpreted as håving the same meanings as terms in the context of pertinent technology, and should not be interpreted as håving ideal or excessively formal meanings unless clearly defined in the specification.

[Advantageous Effects]

According to the present invention, the steering apparatus and method can require a simpler configuration than a configuration in a conventional practice, reduce manufacturing costs and improve a quality of product.

In addition, the steering apparatus and method according to the present invention can drive the tiller and rudder stock by means of the gear part, so that there is no limitation in a steering angle and it is possible to maintain a constant steering force over an entire range.

[Description of Drawings]

FIGS.l and 2 are schematic views showing a steering apparatus and method according to a first embodiment of the present invention. FIGS.3 and 4 are schematic views showing a steering apparatus and method according to a second embodiment of the present invention. FIGS.5 and 6 are schematic views showing a steering apparatus and method according to a third embodiment of the present invention. FIGS.7 and 8 are schematic views showing a steering apparatus and method according to a fourth embodiment of the present invention.

[Best Mode for Invention]

Hereinafter, an explanation on a steering apparatus and method according to the present invention will be in detail given with reference to the attached drawing.

In the description, the thicknesses of the lines or the sizes of the components shown in the drawing may be magnified for the clarity and convenience of the description. Further, the terms as will be discussed later are defined in accordance with the functions of the present invention, but may be varied under the intention or regulation of a user or operator. Therefore, they should be defined on the basis of the whole scope of the present invention.

Before the present invention is disclosed and described, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one of ordinary skill in the art to variously employ the present invention in virtually any appropriately detailed structure. FIGS.l and 2 are schematic views showing a steering apparatus and method according to a first embodiment of the present invention, FIGS.3 and 4 are schematic views showing a steering apparatus and method according to a second embodiment of the present invention, FIGS.5 and 6 are schematic views showing a steering apparatus and method according to a third embodiment of the present invention, and FIGS.7 and 8 are schematic views showing a steering apparatus and method according to a fourth embodiment of the present invention.

In the same manner as in the conventional practice, as shown in FIG.l, a steering apparatus 10 according to a first embodiment of the present invention includes a rudder stock RS on which a rudder is mounted and a tiller T with which the rudder stock RS is operated cooperatively.

However, the steering apparatus 10 according to the first embodiment of the present invention includes a gear part 200 disposed on one side of the tiller T to drive the tiller T and driving parts 100 gear-coupled to one side of the gear part 200 to rotate the gear part 200, which is different from that in the conventional practice.

According to the present invention, that is, in the state where the gear part 200 for driving the tiller T is gear-coupled to the driving parts 100, the gear part 200 rotates to drive the tiller T.

According to the present invention, the tiller T is driven by means of gear coupling like a gear, so that there is no need to provide any pipes for hydraulic driving in the conventional practice, thereby making it possible to perform steering in a simple configuration and also reducing the manufacturing cost thereof.

In addition, the number of parts needed for the steering apparatus according to the present invention can be decreased, so that the steering apparatus can be simple in configuration, thereby reducing the occurrence of failure and improving the quality of the product.

As mentioned above, on the other hand, the tiller T is driven by means of the gear coupling, so that it can rotate by 360°, thereby håving no limitation in a steering angle and maintaining a constant steering force over an entire range.

On the other hand, a steering angle can be changed through a steering method using the steering apparatus according to the present invention.

As mentioned above, that is, the driving parts 100 and the gear part 200 are gear-coupled to each other. After that, the gear part 200 gear-coupled to the driving parts 100 rotates to drive the tiller T.

At this time, the rudder stock RS is fixed to the tiller T, so that through the rotation of the tiller T, the rudder stock RS is operated cooperatively with the tiller T and thus rotates. Through the rotation of the rudder stock RS, accordingly, the rudder mounted on the rudder stock RS is operated to change the steering angle.

Through the characteristics of the gear-coupling, according to the present invention, the steering angle can be finely adjusted and the configuration of the steering apparatus can be simple, without håving any hydraulic pipe.

On the other hand, as described above, the gear part 200, which is adapted to be gear-coupled to the tiller T, generally makes use of a gear widely known to the art, and particularly, as shown, the gear part 200 may make use of a ring gear or a slewing bearing 220 so as to insert the tiller T into the center thereof.

As widely known, the slewing bearing 220 is provided with a gear disposed on the inner or outer periphery thereof, so that it rotates through the gear coupling of the gear.

As shown in FIG.l, the slewing bearing 220 includes an inner ring 222 and an outer ring 221 and thus rotates through steel balls 223 interposed between the inner ring 222 and the outer ring 221. At this time, teeth are formed on the inner peripheral surface of the inner ring 222 or the outer peripheral surface of the outer ring 221, and such slewing bearing 220 is widely known to the art, so that an explanation on the slewing bearing 220 will be avoided for the brevity of the description.

According to the present invention, that is, if the gear part 200 has teeth formed on the outer peripheral surface thereof, the driving parts 100 are gear-coupled to the outer peripheral surface of the gear part 200, and contrarily, if the gear part 200 has teeth formed on the inner peripheral surface thereof, the driving parts 100 are gear-coupled to the inner peripheral surface of the gear part 200.

For example, if the gear part 200 is a ring gear, the teeth are formed on the outer or inner peripheral surface of the gear part 200, and next, the driving parts 100 are disposed outside or inside the gear part 200 and thus gear-coupled to the gear part 200. If the gear part 200 makes use of the ring gear, a widely known rudder carrier for supporting the tiller T can be used as the ring gear.

Additionally, if the gear part 200 is the slewing bearing 220, the teeth are formed on the inner peripheral surface of the inner ring 222 or on the outer peripheral surface of the outer ring 221, and next, the driving parts 100 are disposed outside or inside the gear part 200 and thus gear-coupled to the gear part 200.

Hereinafter, the present invention will now be described in more detail by way of the embodiments as shown in FIGS.l to 8.

First embodiment

According to the first embodiment of the present invention, as shown in FIG.l, the gear part 200 is the slewing bearing 220 disposed on the underside of the tiller T, and the slewing bearing 220 håving the inner ring 222 supported against a base B and the outer ring 221 operated cooperatively with the tiller T. On the other hand, teeth are formed on the outer peripheral surface of the outer ring 221 and thus gear-coupled to the driving parts 100.

At this time, the tiller T, which accommodates the rudder stock RS thereinto, is inserted into the center of the slewing bearing 220.

That is, if the outer ring 221 of the slewing bearing 220 rotates by means of the driving parts 100, the tiller T operated cooperatively with the outer ring 221 rotates, and accordingly, the rudder stock RS fixed to the tiller T rotates, so that the rudder (not shown) mounted on the rudder stock RS is finally driven to adjust the steering angle.

At this time, the inner ring 222 of the slewing bearing 220 is supported against the base B, as mentioned above, and in this case, even if the base B is a ground surface or a separate support surface, the ground surface or the separate support surface may be within the scope of the invention.

Of course, the inner ring 222 may be supported against support parts 800 disposed separately on the base B, and if the support parts 800 have any configuration capable of supporting the inner ring 222, of course, it may be usable.

On the other hand, as mentioned above, the outer ring 221 is driven by means of the driving parts 100, and the driving parts 100 may have any positions or support members gear-coupled to the outer ring 221. As shown in FIG.l, the driving parts 100 are disposed on one side of the slewing bearing 220 and thus supported against brackets 300.

At this time, the brackets 300 have various configurations, and as shown, each bracket 300 includes a vertical member 310 disposed on the base B in a vertical direction and a horizontal member 320 disposed on a portion of the vertical member 310 in a horizontal direction to allow the corresponding driving part 100 to be located on the outer ring 221.

Further, a portion of the horizontal member 320 is open to allow a portion of the corresponding driving part 100 to pass therethrough so that the portion of the corresponding driving part 100 is gear-coupled to the outer ring 221 of the slewing bearing 220.

For example, if each driving part 100 is a planetary gear as will be discussed later, the output stage of the planetary gear passes through the horizontal member 320 and is thus gear-coupled to the outer ring 221.

On the other hand, the brackets 300 may be disposed on the base B, and as shown, they may be disposed on the separate support parts 800.

Further, as mentioned above, each bracket 300 includes the vertical member 310 and the horizontal member 320, and in this case, the vertical member 310 is disposed in the vertical direction with respect to the base B, which is of course not limited thereto.

Similarly, the horizontal member 320 is disposed in the horizontal direction with respect to the base B, which is of course not limited thereto.

In this case, the horizontal member 320 and the vertical member 310 are fixed to each other by mean of welding, and otherwise, the horizontal member 320 is detachably coupled to the vertical member 310 by means of bolt fastening.

After the horizontal member 320 is coupled to the vertical member 310 by means of bolts, that is, it may be separated from the vertical member 310 by removing the bolts if necessary.

According to the present invention, after the back lash of the driving part 100 is adjusted, the horizontal member 320 is disposed on the vertical member 310, thereby improving a working efficiency.

That is, the steering apparatus according to the present invention is almost assembled in a factory, and the back lash of each driving part 100 is adjusted in a site like a ship. After that, the horizontal member 320 is finally disposed on the vertical member 310, thereby saving the time and endeavor needed for the assembly and improving the working efficiency.

On the other hand, the driving parts 100 are gear-coupled to the gear part 200 to drive the gear part 200, and to this end, they may have a variety of conf igurations. As shown in FIG.l, each driving part 100 includes an electric motor 110 for generating a rotational force and a decelerator 120 coupled to the electric motor 110 to rotate a shaft 130 gear-coupled to the gear part 200.

At this time, the decelerator 120 may make use of a planetary gear widely used.

As widely known, the planetary gear includes a sun gear and a ring gear to perform deceleration, and according to the present invention, the rotational force generated from the electric motor 110 is increased through the decelerator 120 and finally transferred to the shaft 130.

On the other hand, the shaft 130 has teeth formed on the outer periphery thereof in such a manner as to be gear-coupled to the gear part 200, and if the decelerator 120 makes use of the planetary gear, the output stage of the planetary gear may be used as the shaft 130.

Further, as described above, the driving parts 100 are adapted to drive the gear part 100, and as shown in FIGS.l and 2, the driving parts 100 of an even number are disposed to face each other.

That is, as mentioned above, even if one driving part 100 does not work, the other driving part 100 may be operated.

At this time, even numbers of driving parts 100 are disposed, and as shown, they face each other so as to achieve the balance of force.

To this end, as shown in FIGS.l and 2, the driving parts 100 are disposed spaced apart from each other by 180° on the center line passing through the center of the gear part 200.

Of course, one or a plurality of driving parts 100 may be disposed.

The arrangements of the driving parts 100 according to the first embodiment of the present invention are the same as according to other embodiments of the present invention as will be discussed later, and the repeated explanations on the arrangement of the driving parts 100 will be avoided hereinafter.

According to the first embodiment of the present invention, as mentioned above, the shafts 130 of the driving parts 100 are gear-coupled to the gear part 200, and accordingly, it is desirable that a lubricant like grease should be introduced into the gear-coupled portions.

To this end, as shown in FIG.l, a lubricant supply part F is further disposed on one side of the shaft 130 gear-coupled to the gear part 200, and a lubricant stored in the lubricant supply part F is supplied to the coupled portion between the shaft 130 and the gear part 200.

At this time, as shown, the lubricant supply part F is mounted on the base B or each support part 800 disposed on the base B to accommodate the coupled portion between the shaft 130 and the gear part 200 thereinto, and otherwise, a lubricant may be supplied through a forced lubricating device.

On the other hand, as shown, the lubricant supply part F has a shape of U to store the lubricant therein and further accommodates the coupled portion between the shaft 130 and the gear part 200 thereinto.

As mentioned above, the tiller T is adapted to fix the rudder stock RS thereto, and to this end, as shown in FIG.l, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to be operated cooperatively with the outer ring 221 of the slewing bearing 220 .

That is, the outer ring 221 and the mounting plate T2 are operated cooperatively with each other, so that the rotational force applied to the outer ring 221 is transferred to the mounting plate T2 to rotate the tiller body Tl, and the rudder stock RS inserted into the tiller body Tl finally rotates.

At this time, fixtures like widely known bolts may be used to allow the outer ring 221 and the mounting plate T2 to be operated cooperatively with each other.

On the other hand, as shown in FIG.l, the mounting plate T2 is disposed on the lower side of the tiller body Tl, which is of course just an example for explaining the present invention, and accordingly, under the condition wherein the mounting plate T2 is operated cooperatively with the outer ring 221, even if the shapes and positions of the tiller body Tl and the mounting plate T2 are changed, they may be of course within the scope of the present invention.

As described above, the steering apparatus according to the first embodiment of the present invention, which has the rudder stock RS on which the rudder is mounted and the tiller T operated cooperatively with the rudder stock RS, includes the gear part 200 disposed on one side of the tiller T to drive the tiller T and the driving parts 100 gear-coupled to one side of the gear part 200 to rotate the gear part 200.

At this time, the rudder stock RS is inserted into the tiller T and then fixed to the tiller T by means of a fastening part 600 disposed on the top of the tiller T.

That is, the rudder stock RS is inserted into the tiller T, and as shown, after a portion of the top of the rudder stock RS is exposed, the rudder stock RS is fixed to the tiller T by means of the fastening part 600 using a nut. Such configuration will be the same as other embodiments of the present invention as will be discussed later, and therefore, the repeated explanations will be avoided hereinafter.

Now, a method for adj usting a steering angle through the steering apparatus according to the first embodiment of the present invention as mentioned above will be described.

First, as shown in FIGS.l and 2, if the slewing bearing 220 is used as the gear part 200, the outer ring 221 of the slewing bearing 220 rotates by means of the driving parts 100 in the state where the inner ring 222 is supported against the base B.

That is, the inner ring 222 is fixedly supported against the base B or the support part 800, and the driving parts 100 are fixedly supported against the base B or the brackets 300.

Under such conditions, if the outer ring 221 rotates by means of the driving parts 100, it rotates around the fixed inner ring 222.

That is, for example, if the shafts 130 of the driving parts 100 rotate in a counterclockwise direction in the state of being gear-coupled to the outer ring 221, the outer ring 221 rotates in a clockwise direction and the inner ring 222 is maintained in a fixed state (See FIG.2).

At this time, the mounting plate T2 of the tiller T is operated cooperatively with the outer ring 221 by means of the fixtures like bolts, so that the mounting plate T2 is operated cooperatively with the outer ring 221 rotating in the clockwise direction and thus rotates in the clockwise direction.

As a result, the tiller T rotates in the clockwise direction by means of the rotation of the mounting plate T2, and the rudder stock RS and the rudder operated cooperatively with the tiller T rotate to change a steering angle.

According to the first embodiment of the present invention, on the other hand, the tiller T is disposed on the gear part 200, but it is just an example for explaining the present invention. Accordingly, even if the entire configuration as shown in FIG.l is disposed to reverse up and down, it may be of course within the scope of the present invention. Such configuration is the same as other embodiments of the present invention as will be discussed later, and therefore, the repeated explanations will be avoided hereinafter.

Second embodiment

According to the second embodiment of the present invention, as shown in FIGS.3 and 4, a gear part 200 is a slewing bearing 220 disposed on the underside of a tiller T.

Further, an outer ring 221 of the slewing bearing 220 is supported against a base B, and teeth are formed on the outer peripheral surface of the outer ring 221 and thus gear-coupled to driving parts 100.

At this time, the outer ring 221 may be supported against the base B, and as shown, it may be supported against support parts 500 disposed on the base B.

Further, the tiller T, which accommodates a rudder stock RS thereinto, is inserted into the center of the slewing bearing 220, and on the other hand, the driving parts 100 are disposed on one side of the tiller T in such a manner as to be operated cooperatively with the tiller T, while being gear-coupled to the outer ring 221 in such a manner as to allow the outer ring 221 to be operated cooperatively with the rudder stock RS.

Unlike the first embodiment of the present invention, that is, the second embodiment of the present invention is configured wherein the driving parts 100 are disposed on the tiller T so that they are coupled to the outer ring 221 in the state of being operated cooperatively with the tiller T.

Under the above-mentioned configuration, i f a rotational force is applied in the state where the driving parts 100 are coupled to the outer ring 221, the outer ring 221 is fixedly supported against the base B or the support parts 500, so that the driving parts 100 themselves rotate to rotate the tiller T.

To this end, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to mount the driving parts 100 thereon.

That is, the driving parts 100 are mounted on the mounting plate T2 in such a manner as to be operated cooperatively with the mounting plate T2, and on the other hand, portions of the driving parts 100 pass through the mounting plate T2 in such a manner as to be gear-coupled to the outer ring 221 of the slewing bearing 220, so that as mentioned above, the tiller T rotates by means of the rotation of the driving parts 100 themselves.

For example, as described above, if each driving part 100 includes a decelerator 120 and a shaft 130, teeth are formed on the outer periphery of the shaft 130 and gear-coupled to the outer ring 221, so that through the rotation of the shaft 130, each driving part 100 and the tiller T rotate.

According to the second embodiment of the present invention, the driving parts 100 are mounted directly on the tiller T, so that there are no brackets as suggested in the first embodiment of the present invention, thereby making the configuration of the steering apparatus simpler.

At this time, an inner ring 222 of the slewing bearing 220 is operated cooperatively with the mounting plate T2 of the tiller T and thus rotates.

Like the first embodiment of the present invention, on the other hand, the shafts 130 are gear-coupled to the outer ring 221 according to the second embodiment of the present invention, and accordingly, a lubricant like grease may be desirably introduced into the gear-coupled portions. To this end, a lubricant supply part F is further disposed on one side of each support part 500.

Further, as shown in FIG.3, the mounting plate T2 of the tiller T is disposed on the lower side of the tiller body Tl, which is of course just an example for explaining the present invention, and accordingly, under the condition wherein the driving parts 100 are disposed operated cooperatively with the mounting plate T2, even if the shapes and positions of the tiller body Tl and the mounting plate T2 are changed, they may be of course within the scope of the present invention.

The other configuration of the steering apparatus according to the second embodiment of the present invention is the same as according to the first embodiment of the present invention, and therefore, a repeated explanation will be avoided. Now, a method for adjusting a steering angle through the steering apparatus according to the second embodiment of the present invention will be described.

First, as shown in FIG. 4, the outer ring 221 of the slewing bearing 220 is fixedly supported against the base B or the support parts 500.

In this state, the outer ring 221 is gear-coupled to the driving parts 100, and after that, a rotational force is generated from the driving parts 100.

For example, as mentioned above, if the shafts 130 of the driving parts 100 rotate in a clockwise direction, the outer ring 221 is fixed, so that the driving parts 100 themselves rotate in the clockwise direction.

Accordingly, the tiller T rotates by means of the rotation of the driving parts 100, and the rudder stock RS inserted into the tiller T rotating rotates.

As a result, the rudder rotates by means of the rotation of the rudder stock RS to change a steering angle.

Third embodiment

According to the third embodiment of the present invention, as shown in FIGS.5 and 6, a gear part 200 is a slewing bearing 220 disposed on the underside of a tiller T, and the slewing bearing 220 has an inner ring 222 supported against a base B and håving teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to driving parts 100.

At this time, the tiller T, which accommodates rudder stock RS thereinto, is inserted into the center of the slewing bearing 220, and the driving parts 100 are disposed on one side of the tiller T in such a manner as to be gear-coupled to the inner ring 222 of the slewing bearing 220.

Like the second embodiment of the present invention, that is, the third embodiment of the present invention is configured wherein the driving parts 100 are disposed on the tiller T, but it is different from the second embodiment of the present invention in that the driving parts 100 are gear-coupled to the inner ring 222 . At this time, the inner ring 222 is fixedly supported against the base B or support parts 700 .

In this state, if the shafts 130 of the driving parts 100 rotate, the inner ring 222 is fixed so that the driving parts 100 themselves rotate.

Accordingly, the tiller T rotates by means of the rotation of the driving parts 100 themselves so that as mentioned above, the rudder stock RS and the rudder are operated cooperatively with each other and rotate.

In a similar manner to the second embodiment of the present invention, at this time, the tiller T adopted in the third embodiment of the present invention includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl.

That is, the driving parts 100 are mounted on the mounting plate T2, and on the other hand, portions of the driving parts 100 pass through the mounting plate T2 in such a manner as to be gear-coupled to the inner periphery of the inner ring 222 of the slewing bearing 220.

That is, the driving parts 100 and the tiller T are operated cooperatively with each other by means of the driving parts 100 disposed on the mounting plate T2, so that as mentioned above, the tiller T rotates by means of the rotation of the driving parts 100.

Further, as shown in FIG.5, the mounting plate T2 of the tiller T is disposed on the upper side of the tiller body Tl, which is of course just an example for explaining the present invention, and accordingly, under the condition wherein the driving parts 100 are disposed operated cooperatively with the mounting plate T2, even if the shapes and positions of the tiller body Tl and the mounting plate T2 are changed, they may be of course within the scope of the present invention.

On the other hand, as described above, the driving parts 100 are gear-coupled to the inner ring 222, and at this time, the mounting plate T2 on which the driving parts 100 are disposed are operated cooperatively with the outer ring 221, so that the outer ring 221 rotates.

The other configuration of the steering apparatus according to the third embodiment of the present invention is the same as according to the first embodiment of the present invention, and therefore, a repeated explanation will be avoided.

Now, a method for adj usting a steering angle through the steering apparatus according to the third embodiment of the present invention will be described with reference to FIGS.5 and 6.

First, the inner ring 222 of the slewing bearing 220 is fixedly supported against the base B or the support parts 700 and also gear-coupled to the driving parts 100.

At this time, the driving parts 100 are driven with respect to the fixed inner ring 222 so that the driving parts 100 themselves rotate.

For example, as mentioned above, the shafts 130 of the driving parts 100 are coupled to the fixed inner ring 222, and if the shafts 130 rotate in a counterclockwise direction, as shown, the shafts 130 rotate in a clockwise direction with respect to the fixed inner ring 222.

Through the rotation of the driving parts 100, accordingly, the tiller T on which the driving parts 100 are disposed is operated cooperatively with the driving parts 100 and rotates, and the rudder stock RS inserted into the tiller T rotating rotates through the rotation of the tiller T, thereby allowing the rudder disposed on the rudder stock RS to be operated.

Fourth embodiment

According to the fourth embodiment of the present invention, as shown in FIGS.7 and 8, a gear part 200 is a slewing bearing 220 disposed on the top of a tiller T. An inner ring 222 of the slewing bearing 220 is operated cooperatively with the tiller T, while håving teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to driving parts 100, and an outer ring 221 of the slewing bearing 220 is supported against a base B.

Unlike the first embodiment of the present invention, that is, the fourth embodiment of the present invention is configured wherein the slewing bearing 220 is disposed on the top of the tiller T and the driving parts 100 are operated cooperatively with the inner ring 222.

However, the other configuration of the fourth embodiment of the present invention is the same as that of the first embodiment of the present invention. That is, the tiller T, which accommodates rudder stock RS thereinto, is inserted into the center of the slewing bearing 220, and the driving parts 100 are spaced apart from each other on one side of the tiller T.

On the other hand, as mentioned above, the driving parts 100 are spaced apart from each other on the top of the tiller T, and to this end, the steering apparatus according to the fourth embodiment of the present invention further includes brackets 400 are disposed on one side of the base B to allow the driving parts 100 to be located on the top of the tiller

T.

At this time, each bracket 400 includes a vertical member 410 disposed on one side of the base B in a vertical direction and a horizontal member 420 disposed on one side of the vertical member 410 in a horizontal direction in such a manner as to be disposed on the top of the tiller T to allow each driving part 100 to be located on the top of the tiller

T.

Further, a portion of the horizontal member 420 is open to allow a portion of the driving part 100 to pass therethrough so that the portion of the driving part 100 is gear-coupled to the inner ring 222 of the slewing bearing 220.

That is, as mentioned above, if each driving part 100 includes the electric motor 110, the decelerator 120 and the shaft 130, teeth are formed on the outer peripheral surface of the shaft 130, and the shaft 130 passes through the open portion of the horizontal member 420 in such a manner as to be gear-coupled to the inner peripheral surface of the inner ring 222.

At this time, as mentioned above, the horizontal member 420 is detachably coupled to the vertical member 410.

On the other hand, as described above, the inner ring 222 of the slewing bearing 220 is operated cooperatively with the tiller T, and to this end, the tiller T includes a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl.

At this time, the mounting plate T2 is disposed on the underside of the slewing bearing 220 in such a manner as to be operated cooperatively with the inner ring 222 of the slewing bearing 220 by means of the installation of bolts.

That is, if the inner ring 222 rotates by means of the driving parts 100, the mounting plate T2 operated cooperatively with the inner ring 222 rotating rotates, so that the tiller T rotates.

Further, as shown in FIG.7, the mounting plate T2 of the tiller T is disposed on the upper side of the tiller body Tl, which is of course just an example for explaining the present invention, and accordingly, under the condition wherein the driving parts 100 are disposed operated cooperatively with the mounting plate T2, even if the shapes and positions of the tiller body Tl and the mounting plate T2 are changed, they may be of course within the scope of the present invention.

According to the fourth embodiment of the present invention, on the other hand, the driving parts 100 are disposed on the top of the slewing bearing 220, and so as to more stably support the slewing bearing 220, the steering apparatus further includes support parts 700 disposed on the base B to support the undersides of the brackets 400 thereagainst.

At this time, the brackets 400 are supported by the support parts 700, and also, a portion of the outer ring 221 is supportedly disposed on the support parts 700.

Further, the tiller T is disposed under the slewing bearing 220, and so as to prevent the tiller T from falling down due to the breakage of assembling bolts, the steering apparatus further includes stoppers SP protruding from one side of the support parts 700 toward the underside of the tiller T.

In this case, even if the tiller T falls, the formation of the stoppers SP protruding from one side of the support parts 700 prevents the tiller T from falling further.

The other configuration of the steering apparatus according to the fourth embodiment of the present invention is the same as according to the first embodiment of the present invention, and therefore, a repeated explanation will be avoided.

Now, a method for adj usting a steering angle through the steering apparatus according to the fourth embodiment of the present invention will be described with reference to FIGS.7 and 8 .

First, the outer ring 221 of the slewing bearing 220 is fixedly supported against the base B or the support parts 700, and the inner ring 222 is gear-coupled to the driving parts 100 in such a manner as to be operated cooperatively with the mounting plate T2 by means of bolts.

At this time, as shown in FIG. 8, if the driving parts 100 rotate in a clockwise direction, the inner ring 222 rotates in the clockwise direction. At this time, the inner ring 222 is operated cooperatively with the mounting plate T2, so that through the rotation of the inner ring 222, the mounting plate T2 rotates thus to rotate the tiller T.

Through the rotation of the driving parts 100, that is, the tiller T operated cooperatively with the inner ring 222 rotates.

Through the rotation of the tiller T, accordingly, the rudder stock RS inserted into the tiller T is operated cooperatively with the tiller T to allow the rudder disposed on the rudder stock RS to be operated, thereby changing a steering angle.

The other process in the method for adjusting a steering angle according to the fourth embodiment of the present invention is the same as according to the first embodiment of the present invention, and therefore, a repeated explanation will be avoided.

While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modi fy the embodiments without departing from the scope and spirit of the present invention.

The modifications and variations of the present invention are within the scope of the invention, and therefore, the scope of the invention will be obvious through the claims appended hereto.

[Explanation on reference numerals]

100: driving part 110: electric motor 120: decelerator 130: shaft

200: gear part 220: slewing bearing 221: outer ring 222: inner ring 300: bracket 310: vertical member 320: horizontal member 400: bracket

410: vertical member 420: horizontal member 500: support part 600: fastening part

700: support part B: base T: tiller Tl: tiller body T2: mounting plate RS: rudder stock

Claims

A gear-coupling type steering apparatus håving a rudder stock RS on which a rudder is mounted and a tiller T with which the rudder stock RS is operated cooperatively, the steering apparatus comprising: a gear part 200 disposed on one side of the tiller T to drive the tiller T; and driving parts 100 gear-coupled to one side of the gear part 200 to rotate the gear part 200.
[Claim 2] The gear-coupling type steering apparatus according to claim 1, wherein the gear part 200 makes use of a ring gear or a slewing bearing 220 for inserting the tiller T into the center thereof.
[Claim 3] The gear-coupling type steering apparatus according to claim 1, wherein if the gear part 200 has teeth formed on the outer peripheral surface thereof, the driving parts 100 are gear-coupled to the outer peripheral surface of the gear part 200, and if the gear part 200 has teeth formed on the inner peripheral surface thereof, the driving parts 100 are gear-coupled to the inner peripheral surface of the gear part 200.
[Claim 4] The gear-coupling type steering apparatus according to claim 1, wherein the gear part 200 is the slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an inner ring 222 supported against a base B and an outer ring 221 operated cooperatively with the tiller T and håving teeth formed on the outer peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220.
[Claim 5] The gear-coupling type steering apparatus according to claim 1, further comprising brackets 300 disposed on one side of the base B to support the driving parts 100 thereagainst, each bracket 300 håving a vertical member 310 disposed on the base B in a vertical direction and a horizontal member 320 disposed on a portion of the vertical member 310 in a horizontal direction to allow each driving part 100 to be located on the outer ring 221, a portion of the horizontal member 320 being open to pass a portion of the driving part 100 therethrough so that the portion of the driving part 100 is gear-coupled to the outer ring 221 of the slewing bearing 220 .
[Claim 6] The gear-coupling type steering apparatus according to claim 4, wherein the tiller T comprises a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to be operated cooperatively with the outer ring 221 of the slewing bearing 220.
[Claim 7] The gear-coupling type steering apparatus according to claim 1, wherein the gear part 200 is a slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an outer ring 221 supported against the base B and håving teeth formed on the outer peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being disposed on one side of the tiller T in such a manner as to be operated cooperatively with the tiller T and gear-coupled to the outer ring 221 to allow the outer ring 221 to be operated cooperatively with the rudder stock RS.
[Claim 8] The gear-coupling type steering apparatus according to claim 7, wherein the tiller T comprises a tiller body Tl for inserting the rudder stock RS thereinto and the mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl in such a manner as to mount the driving parts 100 thereon, so that the driving parts 100 are mounted on the mounting plate T2 in such a manner as to be operated cooperatively with the mounting plate T2, and portions of the driving parts 100 pass through the mounting plate T2 in such a manner as to be gear-coupled to the outer ring 221 of the slewing bearing 220.
[Claim 9] The gear-coupling type steering apparatus according to claim 1, wherein the gear part 200 is a slewing bearing 220 disposed on the underside of the tiller T, the slewing bearing 220 håving an inner ring 222 supported against the base B and teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being disposed on one side of the tiller T in such a manner as to be gear-coupled to the inner ring 222 of the slewing bearing 220.
[Claim 10] The gear-coupling type steering apparatus according to claim 9, wherein the tiller T comprises a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl, and the driving parts 100 are mounted on the mounting plate T2, while portions of the driving parts 100 being passing through the mounting plate T2 in such a manner as to be gear-coupled to the inner periphery of the inner ring 222 of the slewing bearing 220.
[Claim 11] The gear-coupling type steering apparatus according to claim 1, wherein the gear part 200 is a slewing bearing 220 disposed on the top of the tiller T, the slewing bearing 220 håving an inner ring 222 operated cooperatively with the tiller T and teeth formed on the inner peripheral surface thereof in such a manner as to be gear-coupled to the driving parts 100 and an outer ring 221 supported against the base B, and the tiller T accommodating the rudder stock RS thereinto is inserted into the center of the slewing bearing 220, the driving parts 100 being spaced apart from each other on one side of the tiller T in such a manner as to be gear-coupled to the inner peripheral surface of the inner ring 222 of the slewing bearing 220.
[Claim 12] The gear-coupling type steering apparatus according to claim 11, further comprising brackets 400 disposed on one side of the base B to allow the driving parts 100 to be located on the top of the tiller T, each bracket 400 håving a vertical member 410 disposed on one side of the base B in a vertical direction and a horizontal member 420 disposed on one side of the vertical member 410 in a horizontal direction in such a manner as to be disposed on the top of the tiller T to allow each driving part 100 to be located on the top of the tiller T, a portion of the horizontal member 420 being open to pass a portion of the driving part 100 therethrough so that the portion of the driving part 100 is gear-coupled to the inner ring 222 of the slewing bearing 220.
[Claim 13] The gear-coupling type steering apparatus according to claim 11, wherein the tiller T comprises a tiller body Tl for inserting the rudder stock RS thereinto and a mounting plate T2 disposed to the shape of a plate on the outer peripheral surface of the tiller body Tl, the mounting plate T2 being disposed on the underside of the slewing bearing 220 in such a manner as to be operated cooperatively with the inner ring 222 of the slewing bearing 220.
[Claim 14] The gear-coupling type steering apparatus according to claim 11, further comprising support parts 700 disposed on the base B to support the undersides of the brackets 400 thereagainst and stoppers SP protruding from one side of the support parts 700 toward the underside of the tiller T.
[Claim 15] The gear-coupling type steering apparatus according to claim 5 or 12, wherein the horizontal member 320 or 420 is detachably coupled to the vertical member 310 or 410.
[Claim 16] The gear-coupling type steering apparatus according to any one of claims 1 to 14, wherein each driving part 100 comprises an electric motor 110 for generating a rotational force and a decelerator 120 coupled to the electric motor 110 to rotate a shaft 130 gear-coupled to the gear part 200.
[Claim 17] The gear-coupling type steering apparatus according to claim 16, wherein the decelerator 120 makes use of a planetary gear.
[Claim 18] The gear-coupling type steering apparatus according to claim 1, further comprising a lubricant supply part F disposed on one side of each shaft 130 gear-coupled to the gear part 200, and a lubricant stored in the lubricant supply part F is supplied to the coupled portion between the shaft 130 and the gear part 200.
[Claim 19] The gear-coupling type steering apparatus according to claim 1, wherein the driving parts 100 of an even number are disposed to face each other.
[Claim 20] The gear-coupling type steering apparatus according to claim 1, wherein the rudder stock RS is inserted into the tiller T and then fixed to the tiller T by means of a fastening part 600 disposed on the top of the tiller T.
[Claim 21] A steering method using the steering apparatus according to claim 1, comprising the steps of: rotating the gear part 200 gear-coupled to the driving parts 100 to rotate the tiller T; and rotating the rudder stock RS operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.
[Claim 22] A steering method using the steering apparatus according to claim 4, comprising the steps of: rotating the outer ring 221 by means of the driving parts 100 in the state where the inner ring 222 of the slewing bearing 220 is supported against the base; rotating the tiller T operated cooperatively with the outer ring 221 rotating; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.
[Claim 23] A steering method using the steering apparatus according to claim 7, comprising the steps of: fixedly supporting the outer ring 221 of the slewing bearing 220 against the base B in such a manner as to be gear-coupled to the driving parts 100 and driving the driving parts 100 with respect to the outer ring 221 fixed to rotate the driving parts 100; allowing the tiller T on which the driving parts 100 are disposed to be operated cooperatively with the driving parts 100 to rotate the tiller T; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.
[Claim 24] A steering method using the steering apparatus according to claim 9, comprising the steps of: fixedly supporting the inner ring 222 of the slewing bearing 220 against the base B in such a manner as to be gear-coupled to the driving parts 100 and driving the driving parts 100 with respect to the inner ring 222 fixed to rotate the driving parts 100; allowing the tiller T on which the driving parts 100 are disposed to be operated cooperatively with the driving parts 100 to rotate the tiller T; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.
[Claim 25] A steering method using the steering apparatus according to claim 11, comprising the steps of: supporting the outer ring 221 of the slewing bearing 220 against the base B, allowing the inner ring 222 of the slewing bearing 220 to be gear-coupled to the driving parts 100, and rotating the inner ring 222 by means of the driving parts 100; rotating the tiller T operated cooperatively with the inner ring 222 through the rotation of the driving parts 100; and allowing the rudder stock RS mounted on the tiller T to be operated cooperatively with the tiller T through the rotation of the tiller T to operate the rudder mounted on the rudder stock RS.