KR100806921B1 - Radio control helicopter - Google Patents

Abstract

A radio control helicopter plate is provided to unify 90 and 120 degree-type swash plates that were used by being separately manufactured, and to promote flight stability by changing a position of a fuel tank. A radio control helicopter includes the swash plate comprising an upper plate, a spherical bearing, the lower plate(16), and a ball bearing. The lower plate has six link connection ends(21,22,23,24,25,26) integrally formed on the outer diameter surface at certain angles and having a shape that is vertically bent in an upper direction.

Description

Radio Model Helicopter

1 is a perspective view showing a lower plate of a swash plate for a radio model helicopter according to the present invention;

2 is a plan view showing a lower plate of the swash plate for a radio model helicopter according to the present invention;

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

4 is a perspective view showing an upper plate coupled to a lower plate of a swash plate according to the present invention;

5 is a perspective view illustrating a state in which an upper plate is coupled to a lower plate of a swash plate according to the present invention;

6 is a side view showing a state in which a swash plate according to the present invention is mounted on a radio model helicopter;

7 is a perspective view illustrating a state in which a swash plate according to the present invention is mounted on a radio model helicopter;

8 is a perspective view illustrating a fuel tank installation structure of the radio model helicopter according to the present invention;

9 is a cross-sectional view taken along the line C-C of Figure 8 illustrating the structure of the fuel cylinder of the radio model helicopter according to the present invention;

10 is a perspective view showing the appearance of a dustproof port for a fuel tank dustproof structure of a wireless model helicopter according to the present invention;

11 is a cross-sectional view illustrating a conventional swash plate configuration.

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

10: upper plate 12: mast

14 spherical bearing 16 lower plate

18: link connection end 20: ball bearing

21: first link connection 22; 2nd link connection end

23: third link connection terminal 24: fourth link connection terminal

25: fifth link connection terminal 26: sixth link connection terminal

28: frame 30: fuel container

32: dustproof hole 34: fastening groove

36: insertion groove 38: fitting protrusion

40: insertion end 42: connecting bar

44: close contact 100, 200: swash plate

The present invention relates to a radio model helicopter, and more specifically, a 90 ° swash plate and a 120 ° swash plate, which are separately manufactured and used, are integrated in one swash plate to be used in common, and By changing the position rearward, it can be installed close to the center of gravity, resulting in flight stability. Also, the fuel tank can be clearly identified and dustproof structure is applied to the fuel tank for smooth fuel supply and combustion. The present invention relates to a radio model helicopter having a feature.

Typically, helicopters have a collective pitch that gives the braid a uniform lift, and a cyclic pitch that provides right and left balance, front and rear balance and unbalanced lift, and, in the case of a model helicopter, the cyclic pitch for the appeal of the flight. More weight.

With the development of the sports industry, wireless model helicopters have been popularized around the community, and in order to enable a variety of aerobatics far exceeding actual helicopters, the pitch control must be precisely performed to ensure proper flight and accidents. Does not lead to

Usually, helicopters move up and down by a collective pitch control that equalizes the embossing of both blades to produce a uniform lift on both blades, and a cyclic pitch that embosses the two blades differently to produce an unbalanced lift on both blades. The front and rear left and right movements are controlled.

In order to control the collective pitch and the cyclic pitch, the model helicopter adopts a swash driving method, and the most important component applied to the swash driving method is called a swash plate.

The swash plate is the most important component for the flight of the radio model helicopter, the vertical movement is related to the collective pitch, the front and rear movement is related to the cyclic pitch.

Looking at the configuration of the swash plate in detail as follows.

11 is a cross-sectional view showing the structure of a normal swash plate.

As shown in FIG. 11, a typical swash plate 200 includes an upper plate 10 inserted into and mounted on a mast 12 which becomes a main axis of rotation of a helicopter; A spherical bearing 14 disposed between the inner diameter of the upper plate 10 and the outer diameter of the mast 12; A lower plate 16 inserted and fastened to an outer diameter surface of the lower end of the upper plate 10; A link connecting end 18 vertically bent upward from the outer diameter surface of the lower plate 16; It is configured to include a ball bearing 20 disposed between the inner diameter of the lower plate 16 and the outer diameter of the upper plate 10.

When driving the helicopter, since the spherical bearing 14 is embedded in the upper plate 10, the mast 12 may be tilted back, forth, left, and right through the pitch control, and the lower plate 16 may be inclined. The upper plate 10 is rotated in synchronization with the main rotor is connected to the top of the mast 12 without rotating.

The swash plate having such a configuration has a 90 ° type swash plate and a 120 ° type swash plate which are separately manufactured and used, and the 90 ° type swash plate and the 120 ° type swash plate have the shape of the lower plate. It is divided by standard.

That is, four link connecting ends (parts connected to the servo motor side and the link) vertically bent upward from the outer diameter surface of the lower plate form a 90 ° angle and are named 90 ° type swash plates. On the other hand, three link connecting ends (parts connected to the servo motor side and the link) vertically bent upward from the outer diameter surface of the lower plate are formed integrally at a 120 ° angle and are referred to as 120 ° type swash plates. have.

Starting with the control of the swash plate as described above, all maneuvers of the radio model (RC) helicopter are made. It is roughly classified as a 120 ° type swash drive system.

The driving method using the 90 ° type swash plate is a method in which an aileron, an elevator, and a pitch servo are dedicated to one operation, and a method in which the power of the servo motor is transmitted through one or two stages. The helicopter's maneuvering direction is controlled by the tilting, tilting and tilting of the sea plate.

The driving method using the 120 ° type swash plate is called CCPM (Cyclic Collective Pitch Mixing), and is commonly referred to as 120 ° type swash. Unlike the 90 ° type swash method, a combination of three servos is used. It creates one operation and distributes the load on one servo to three servos, which reduces the burden on the servo and also reduces the number of parts due to its simple structure.

As described above, although the 90 ° and 120 ° type swash drive methods have advantages and disadvantages, the drive methods are usually applied differently according to the size of spherical bearings. There is a cost difficulty to purchase both a swash plate and a 120 ° type swash plate.

On the other hand, the current fuel tank mounted on most of the radio model helicopter is mounted on the hull part visually invisible, the flight stability is poor, it is impossible to check the remaining fuel during the flight, the helicopter crash frequently occurs.

In addition, the fuel container is severely shaken by the engine and flight vibration of the helicopter, the phenomenon that bubbles are generated in the fuel, which causes the start-up phenomenon due to poor combustion.

The present invention has been made in order to solve the above problems, by improving the structure of the link connecting end of the lower plate of the swash plate configuration, 90 ° type swash plate and 120 ° type that was previously manufactured separately The objective is to provide a wireless model helicopter that incorporates a swash plate into one swash plate for common use.

Another object of the present invention is to change the position of the fuel tank to the rear of the helicopter fuselage to be installed close to the center of gravity to bring flight stability, and when the helicopter in flight on the ground, it is possible to easily identify the remaining fuel in the fuel tank To one point.

It is still another object of the present invention to apply a dustproof structure between the fuel container and the fuselage frame on which the fuel container is mounted, so that the fuel container is not shaken so that smooth fuel supply and combustion can be achieved.

One embodiment of the present invention for achieving the above object is: an upper plate mounted to the mast of the helicopter, a spherical bearing disposed between the upper plate and the mast, and a lower plate fastened to the outer diameter of the upper plate, In the radio model helicopter comprising a swash plate consisting of a ball bearing disposed between the lower plate and the upper plate, the six link connection end having a shape bent upwardly perpendicular to the outer diameter surface of the lower plate at a predetermined angle It is formed integrally so as to provide a wireless model helicopter characterized in that the 90 ° type swash plate and 120 ° type swash plate in common.

In a preferred embodiment, the first, second, third and fourth link connecting ends of the six link connecting ends are formed at 90 ° intervals on the outer diameter surface of the lower plate to form a 90 ° type swash plate. do.

In a preferred embodiment, the fifth link connection end of the six link connection end is located between the second and third link connection end is formed in a position making 120 ° with the first link connection end, the sixth link connection end Located between the third and fourth link connecting end, but formed in a position forming a 120 ° with the first link connecting end, the first, 5, 6 link connecting end having a 120 ° intervals to each other to form a 120 ° type swash plate It is characterized by.

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Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a lower plate of a swash plate for a radio model helicopter according to the present invention, and FIG. 2 is a plan view showing a lower plate of a swash plate for a radio model helicopter according to the present invention, and FIG. It is AA sectional drawing of 2.

As described above, the conventional swash plate is disposed between the upper plate 10 inserted into and mounted on the mast 12, which is the main axis of rotation of the helicopter, and the inner diameter of the upper plate 10 and the outer diameter of the mast 12. Being a spherical bearing 14, a lower plate 16 inserted into and coupled to an outer diameter surface of the lower end of the upper plate 10, and a ball bearing disposed between an inner diameter of the lower plate 16 and an outer diameter of the upper plate 10. It comprises 20.

According to one embodiment of the present invention, the bottom plate structure of the swash plate is improved, the main point is to share the 90 ° type swash plate and 120 ° type swash plate.

To this end, it is formed vertically bent upward on the outer diameter surface of the lower plate 16 of the swash plate 100 in accordance with the present invention, the bent portion is curved curved and has six bent connection ends ( 21, 22, 23, 24, 25, 26 are integrally formed at a predetermined angle.

More specifically, six link connecting ends 21, 22, 23, 24, 25, and 26 are integrally formed on the outer diameter surface of the lower plate 16, but as shown in FIG. 2, six links are provided. The first, second, third, fourth link connecting ends 21, 22, 23, and 24 of the connecting ends 21, 22, 23, 24, 25, and 26 are spaced 90 ° from the outer diameter surface of the lower plate 16. Is formed.

Accordingly, the first, second, third, fourth link connection ends 21, 22, 23, and 24 of the six link connection ends 21, 22, 23, 24, 25, and 26 are formed at 90 ° intervals. The implementation of the 90 ° swash plate is made.

Here, as shown in FIG. 2 attached to the six link connection ends 21, 22, 23, 24, 25, and 26, the fifth link connection end 25 is connected to the second and third link connection ends. It is formed so as to be positioned between (22, 23), it forms 120 ° with the first link connection end 21 and integrally formed at a position making 60 ° with the third link connection end 23.

In addition, as shown in FIG. 2 of the six link connection ends 21, 22, 23, 24, 25, and 26, the sixth link connection end 26 may be connected to the third and fourth link connection ends. It is formed so as to be located between (23, 24), but similarly forms 120 ° with the first link connection end 21 and integrally formed at a position making 60 ° with the third link connection end 23.

Accordingly, the first, fifth, and sixth link connecting ends 21, 25, and 26 are arranged at 120 ° intervals to each other, resulting in a 120 ° type swash plate.

As such, the lower end of the upper plate 10 illustrated in FIG. 4 is inserted into and coupled to the inner diameter surface of the lower plate 16 having six link connection ends 21, 22, 23, 24, 25, and 26. In this case, as shown in FIG. 5, the ball bearing 20 is inserted into an inner diameter surface of the lower plate 16 and an outer diameter of the upper plate 10.

6 and 7 are side and perspective views showing a state in which a swash plate according to the present invention is mounted on a radio model helicopter.

6 and 7, the upper plate 10 is coupled to the mast 12 via the spherical bearing 14, and the lower plate 16 is connected to the upper plate via the ball bearing 20. Bar 10 is coupled to the state, the lower plate 16 does not rotate, only the upper plate 10 is rotated in synchronization with the main rotor connected to the top of the mast 12.

Therefore, when the 90 ° type swash plate is applied, the corresponding link may be connected to the first, second, third and fourth link connecting ends 21, 22, 23, and 24 of the lower plate 16 according to the present invention. Accordingly, the driving method using the existing 90 ° type swash plate is applied as it is, so that the swash plate is tilted, rolled up and down, and tilted based on the mast.

On the other hand, if you want to use a 120 ° type swash plate, the link is connected to the first, fifth, sixth link connecting end (21, 25, 26) of the lower plate according to the present invention, the existing 120 The driving method using the ° type swash plate is performed as it is, unlike the 90 ° type swash method, one operation is produced by the combination of three servos.

As such, the swash plate 100 of the present invention, that is, one swash plate 100, 90 ° and 120 ° type swash plate can be used in common, 90 ° type swash made separately Eliminating the cost of having to purchase both a plate and a 120 ° type swash plate separately.

According to another embodiment of the present invention, the position of the fuel tank is changed to the rear of the helicopter fuselage to be installed close to the center of gravity to ensure flight stability, and when the helicopter in flight on the ground, the fuel remaining amount of the fuel tank It is clearly identified so that it can prevent falls due to fuel shortages during flight.

As shown in FIG. 8, the frame 28 having the bottom portion is mounted to the rear end of the fuselage part of the helicopter, and the bottom of the fuel container 30 is mounted to the frame 28 so that the bottom is visible from the ground. When seeing the helicopter in flight, it is possible to clearly identify the fuel remaining amount of the fuel container 30, and eventually to prevent the fall accident due to the fuel shortage during the flight.

According to still another embodiment of the present invention, by applying a dustproof structure between the fuel container 30 and the fuselage frame 28 to which the fuel container 30 is mounted, the fuel container is not shaken, thereby facilitating smooth fuel supply and combustion. There is a characteristic to one point.

9 is a cross-sectional view taken along line CC of FIG. 8 illustrating a fuel cell dustproof structure of the wireless model helicopter according to the present invention, and FIG. 10 is a perspective view illustrating a dustproof hole for the fuel cell dustproof structure of the wireless model helicopter according to the present invention. .

According to the present invention, as the dustproof means for the fuel cylinder dustproof structure, a rubber material dustproof opening 32 having a shape as shown in FIG. 10 is provided.

In addition, for the fuel tank dustproof structure according to the present invention, the fastening groove 34 is processed on the inner surface of the frame 28, the outer surface of the fuel container 30 so that the insertion groove 36 is formed concave. .

The fitting protrusion 38 is formed at one end of the anti-vibration opening 32, and an insertion end 40 of a disc shape is formed at the other end thereof, and the fitting protrusion 38 and the insertion end 40 are connected to the connecting bar ( 42) to be connected integrally.

At this time, the peripheral surface of the connecting bar 42 is further formed integrally with the close end 44 in close contact with the outer peripheral portion of the fastening groove 34 of the frame 28.

Accordingly, the fitting groove 38 of the dustproof opening 32 is inserted into the fastening groove 34 processed on the inner surface of the frame 28, and an insertion groove formed concave on the outer surface of the fuel container 30 ( The insertion end 40 of the vibration isolator 32 is inserted and seated in the 36, and the contact end 44 is brought into close contact with the outer circumferential part of the fastening groove 34 of the frame 28.

In this way, a dustproof opening is inserted between the frame and the fuel container so that the fuel container is not shaken even when the helicopter is flying, and thus the fuel can be smoothly supplied and burned.

As seen above, according to the radio model helicopter according to the present invention provides the following effects.

1) The link connecting end structure of the lower plate was improved to six link connecting ends arranged at a predetermined angle, and the 90 ° type swash plate and the 120 ° type swash were used separately. Integrating the plate into one swash plate provides the benefit of common use.

2) The position of the fuel tank is changed to the rear of the helicopter fuselage to be installed close to the center of gravity to bring flight stability. Also, when the helicopter in flight is seen from the ground, the fuel level of the fuel tank can be easily identified. In addition, it is possible to prevent the fall due to the fuel shortage.

3) By applying an anti-vibration structure between the fuel container and the fuselage frame to which the fuel container is mounted, the fuel container is not shaken so that smooth fuel supply and combustion can be achieved.

Claims (6)

A swash consisting of an upper plate mounted on the mast of the helicopter, a spherical bearing disposed between the upper plate and the mast, a lower plate fastened to an outer diameter of the upper plate, and a ball bearing disposed between the lower plate and the upper plate. In the radio model helicopter comprising a plate, 90 ° type by integrally forming six link connection ends 21, 22, 23, 24, 25, 26 having a shape vertically bent upward on the outer diameter surface of the lower plate 16 to form a predetermined angle A radio model helicopter comprising a swash plate and a 120 ° type swash plate in common. The method of claim 1, wherein the first, second, second, third, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth, fourth half, and all of the six link connection ends 21, 22, 23, 24, 25, 26 are connected to the lower plate 16) Wireless model helicopter, characterized in that formed on the outer diameter surface of 90 ° intervals to form a 90 ° type swash plate. The method according to claim 1 or 2, Among the six link connection ends 21, 22, 23, 24, 25, and 26, a fifth link connection end 25 is positioned between the second and third link connection ends 22 and 23, but the first link connection is performed. And a sixth link connecting end 26 positioned between the third and fourth link connecting ends 23 and 24, and the first link connecting end 21 and 120. It is formed in a position to form a °, the radio model helicopter, characterized in that the first, 5, 6 link connecting end (21, 25, 26) having a 120 ° intervals to form a 120 ° type swash plate. delete delete delete

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