CN201139949Y - Remote control helicopter - Google Patents

Abstract

The utility model discloses a remote control helicopter, including casing, frame, last rotor and lower rotor, motor, the drive gear group and the controller that link to each other with the motor, motor and drive gear group install on the frame, are equipped with rotatable axle and pipe on the frame, and axle lower part suit is intraductal, and axle and pipe link to each other with above-mentioned drive gear group respectively, and its technical essential lies in: the lower rotor wing is sleeved on the pipe, the upper rotor wing is movably sleeved on the upper end of the shaft, the upper part of the shaft is sleeved with a protective sleeve, and the lower end of the protective sleeve is movably sleeved outside the pipe; a counter bore is arranged on the machine base, a small steel ball with a buffering function is placed at the bottom of the counter bore, and the lower end of the shaft is inserted into the counter bore; the engine base is provided with a counter bore, the bottom of the counter bore is provided with an elastic sheet which can be in elastic contact with the shaft, and the lower end of the shaft is inserted in the counter bore. The utility model provides a flight is stable, anti striking performance is strong remote control helicopter.

Description

remote helicopter

[technical field]

The utility model relates to a toy, in particular to a remote control helicopter which uses two pairs of upper and lower rotors to rotate positively and negatively to produce lift force changes and direction changes.

[Background technique]

The feature of the biplane remote control helicopter is: two pairs of rotors on the same axis, one pair is a positive rotation rotor, and the other pair is a counter rotation rotor, thereby offsetting the counter rotation force generated when the two pairs of rotors rotate. When both pairs of rotors accelerate or decelerate simultaneously, the helicopter ascends or descends. When one pair of rotors speeds up and the other pair slows down, the helicopter turns.

At present, most of the biplane remote control helicopters sold on the market are relatively large oil-powered coaxial biplane remote control helicopters, which cannot be sold in large quantities due to high risk, high cost, low production volume, and complicated process; electric power biplane remote control helicopters use wireless control. Helicopters can fly freely and are highly entertaining. However, due to the unstable rotation of the wings of electric power remote control helicopters, the helicopters are very unstable during flight and have large swings; at the same time, due to the fact that electric helicopters inevitably collide with hard objects in actual use , such as colliding with the ground when landing, or colliding with obstacles such as walls when flying, it is often damaged by collision, especially when the rotor on the rotating shaft has a large momentum at the moment of landing, the rotating shaft will often crash through under the action of a large momentum. The main shaft support point makes the gear on the rotating shaft disengage from the motor gear, affecting the helicopter to fly again. Therefore, it is necessary to improve the structure of the existing helicopter to enhance its practical performance.

[utility model content]

The utility model overcomes the above-mentioned technical deficiencies, and provides a remote-controlled helicopter with stable flight and strong anti-collision performance.

In order to achieve the above object, the utility model adopts the following technical solutions:

A remote-controlled helicopter, including a casing, a base, an upper rotor and a lower rotor, a motor, a transmission gear set connected to the motor, and a controller. The motor and the transmission gear set are installed on the base, and the base is equipped with a rotatable Shaft and tube, the lower part of the shaft is set in the tube, and the shaft and the tube are respectively connected with the above-mentioned transmission gear set. It is characterized in that: the lower rotor is set on the tube, and the upper rotor is movably set on the upper end of the shaft. The lower end of the protective sleeve is movable outside the above-mentioned tube;

As mentioned above, a counterbore is provided on the machine base, and a small steel ball with buffering effect is placed at the bottom of the counterbore, and the lower end of the shaft is inserted into the counterbore;

As mentioned above, a counterbore is provided on the machine base, and a shrapnel elastically contacting the shaft is placed at the bottom of the counterbore, and the lower end of the shaft is inserted into the counterbore;

As mentioned above, the machine base is composed of an upper seat part and a lower seat part separated from the upper and lower parts. The lower seat part is combined with the upper seat part through the surrounding support part. A through shaft hole is provided in the center of the upper seat part. The lower end of the tube passes through the above-mentioned shaft hole and is fixedly connected with the reverse rotation gear on the transmission gear set, and the shaft passes through the tube and is fixedly connected with the forward rotation gear on the transmission gear set;

As mentioned above, the shaft is a hollow shaft, and a hollow tube is fixedly connected to the shaft hole of the upper seat, and the tube is set inside the hollow tube;

As mentioned above, the counterbore is also equipped with a steel sleeve for stabilizing the shaft, and the lower end of the shaft is inserted into the steel sleeve;

As mentioned above, the upper end of the protective cover is in the shape of a 'cross', and the angle between the 'cross' is provided with reinforcing ribs, and the upper end of the protective cover is protrudingly installed in the 'cross' groove at the center of the upper rotor;

As mentioned above, a screw is screwed on the wall of the protective sleeve, and a positioning groove is opened on the shaft, and the front end of the screw is clamped in the above positioning groove;

As mentioned above, a counterweight device is movably connected to the upper part of the shaft. The counterweight device includes a balance frame movably connected to the protective sleeve and two counterweights fixedly connected to the balance frame. Flying ribs;

As mentioned above, the connecting parts of the counterweight and the balance frame are all screwed with screws, and the screws pass through the screw holes on the balance frame and are stuck in the slots on the shaft of the counterweight.

The beneficial effects of the utility model are:

1. The upper rotor and the counterweight device for balancing are connected by connecting rods, which solves the stable relationship between the counterweight device and the upper rotor. When the upper rotor is unstable, it can be easily corrected by the counterweight device. The lever connection structure formed by the hole ball head connecting rod movably connecting the upper rotor and the counterweight device improves the stability of the upper rotor, thereby improving the flight stability of the remote control helicopter;

2. The components on the counterweight device are fastened and connected by screws. The front end of the connecting screw is stuck in the corresponding groove, and the connection is firm, which greatly improves the flight stability and impact resistance of the remote control helicopter;

3. The upper end of the shaft that is fixedly connected with the upper rotor is provided with a protective cover that is clamped with screws, and the lower end is placed with a small steel ball that acts as a buffer. When the remote control plane lands, the clamping screw fastens the shaft, avoiding the shaft from going up or down; and the small steel balls disperse the downward impact force of the shaft to different directions, so as to prevent the shaft from colliding with the supporting point and causing the shaft to be damaged. The positive rotation gear is separated from the motor gear, which greatly improves the flight stability and impact resistance of the remote control helicopter;

4. The upper and lower rotors are made of anti-fall tough plastic, which is light and durable.

[Description of drawings]

Below in conjunction with accompanying drawing and embodiment of the present utility model, describe in further detail:

Fig. 1 is the explosion diagram of the utility model;

Figure 2 is an enlarged view of A in Figure 1;

Fig. 3 is the perspective view of the utility model;

Fig. 4 is a cross-sectional view of the assembly structure of the components at the upper rotor of the utility model;

Fig. 5 is a sectional view of the assembly structure of the components at the second set of upper rotors of the utility model;

Fig. 6 is a cross-sectional view of the assembly structure of the components at the third group of upper rotors of the utility model;

Figure 7 is a schematic diagram of the internal mechanism and rotor assembly of the utility model;

Figure 8 is a cross-sectional view of the internal mechanism and rotor assembly structure of the utility model;

Fig. 9 is an enlarged view of B in Fig. 8 .

[Detailed ways]

As shown in the figure, the remote control helicopter includes an organic casing 11, a base 12, an upper rotor 13 and a lower rotor 14, a motor 15, a transmission gear set 16 connected to the motor 15 and a controller 17, and the motor 15 and the transmission gear set 16 Installed on the base 12, the base 12 is equipped with a rotatable shaft 18 and a tube 19, the lower part of the shaft 18 is sleeved in the tube 19, and the shaft 18 and the tube 19 are respectively connected with the above-mentioned transmission gear set 16, and the lower rotor 14 is fixed. Set on the tube 19, the upper rotor 13 is movably set on the upper end of the shaft 18, the upper part of the shaft 18 is provided with a protective sleeve 4, and the lower end of the protective sleeve 4 is movably sleeved outside the above-mentioned tube 19. On the basis of the rotation axis, the shaft 18 can be effectively prevented from being bent and deformed. In order to enhance the firmness of the connection, in the present utility model, a screw 5 is screwed on the wall of the protective cover 4, and the front end of the screw 5 is clamped in the positioning groove 180 on the shaft 18, so as to prevent the shaft 18 from going up or down. ; The upper end of the protective cover 4 is a 'cross' shape, and the angle of the cross is provided with a reinforcing rib 41, and the upper end of the protective cover 4 is convexly mounted in the 'cross' groove 131 at the center of the upper rotor 13, and the reinforcing rib 41 can improve protection. Set of 4 anti-torsion properties.

In order to prevent the shaft 18 from directly colliding with the machine base 12 when subjected to impact force, in the present utility model, the machine base 12 is provided with a counterbore 125, and a small steel ball 126 with a buffering effect is placed at the bottom of the counterbore 125. 18 lower ends are inserted in the counterbore 125, and the steel sleeve 127 that is used for stabilizing the shaft 18 is also sheathed in the counterbore 125, and the lower end of the shaft 18 is inserted in the steel sleeve 127.

When the utility model falls, the shaft 18 moves downward in the axial direction, and its upper part prevents excessive movement by pressing the tube 19 with the protective sleeve 4; the lower part of the shaft 18 presses on the small steel ball 126, and the small steel ball 126 is stressed Afterwards, non-directional rotation is performed, so that the downward impact force of the shaft 18 is dispersed to different directions, thereby avoiding the shaft 18 from crashing into the support point. In addition to using the small steel ball 126 , an elastic piece that can be in elastic contact with the shaft 18 can also be placed at the bottom of the counterbore 125 . When the shaft 18 moves downward in the axial direction, the elastic piece can also play a buffering role.

In the utility model, two motors 15 are fixedly connected to the lower part of the machine base 12, and the gears on the main shafts of the two motors 15 mesh with the reverse rotation gear 161 and the forward rotation gear 162 on the transmission gear set 16 respectively, and the shaft 18 and the pipe 19 move longitudinally Inserted on the base 12. The base 12 is made up of an upper seat part 121 and a lower seat part 122 which are spaced apart from top to bottom. The anti-rotation gear 161 and the positive rotation gear 162 are located between the upper seat part 121 and the lower seat part 122, and the anti-rotation gear 161 is located at the positive rotation gear 162. above. The lower seat part 122 is combined with the upper seat part 121 through the peripheral support part 123, and the center of the upper seat part 121 is provided with a through shaft hole 124. The hole 124 is also fixedly connected with the anti-rotation gear 161 , and the shaft 18 passes through the pipe 19 and is fixedly connected with the positive-rotation gear 162 .

Wherein, the shaft 18 is a hollow shaft, and the shaft hole 124 of the upper seat portion 121 is fixedly connected with a hollow tube 3, and the tube 19 is set in the above-mentioned hollow tube 3, and the function of the hollow tube 3 is to cover the tube 19 and the inside of the tube 19. The shaft 18 improves the impact resistance of the utility model.

The upper part of the shaft 18 is movably connected with a counterweight device 2, and there is a connecting rod connection structure between the counterweight device 2 and the upper rotor 13. The connecting rod connection structure includes a cross bar 20 fixedly connected with the counterweight device 2, located The connecting block 130 at the center of the upper rotor 13 , and the double-hole ball-joint connecting rod 8 whose one end is movably clipped on the outer end of the cross bar 20 and the other end is movably clipped on the connecting block 130 . When the upper rotor 13 is unstable, the counterweight device 2 can easily correct the upper rotor 13 through the leverage relationship formed by the cross bar 20 and the double-hole ball-joint connecting rod 8, so that the upper rotor 13 can be quickly restored to stability.

The counterweight device 2 includes a balance frame 21 movably connected to the protective sleeve 4 and two counterweights 22 fixedly connected to the balance frame 21. The outer port of the counterweight 22 is provided with a rib 220 to prevent the hammer body from flying off. . The connecting parts of the balance weight 22 and the balance frame 21 are all screwed with screws, and the screws pass through the screw holes on the balance frame 21 and are stuck in the slot 23 on the hammer rod of the balance weight 22, so as to prevent the rapidly rotating balance weight 22 from being thrown off. The connection is firm and practical.

Considering that the tail of the casing 11 is relatively weak, a protective frame 9 is installed at its tail. The protective frame 9 is composed of upper and lower splints 91, 92 and two side plates 93. The tail of the casing 11 is clamped on the upper and lower splints 91 , 92, the two ends of the upper and lower splints 91, 92 are respectively clamped in the clamping holes 930 on the side plates 93; a carbon fiber rod 10 is also inserted in the tail of the casing 11 to improve the resistance of the tail of the casing 11. impact capability.

Claims (10)

1, RC Goblin, include casing (11), support (12), last rotor (13) and following rotor (14), motor (15), driving gear set (16) that links to each other with motor (15) and controller (17), motor (15) and driving gear set (16) are installed on the support (12), rotatable axle (18) and pipe (19) are housed on the support (12), axle (18) bottom is sleeved in the pipe (19), axle (18) links to each other with above-mentioned driving gear set (16) respectively with pipe (19), it is characterized in that: described rotor (14) down is sleeved on the pipe (19), described rotor (13) movable set of going up is in axle (18) upper end, axle (18) top is arranged with protective jacket (4), and protective jacket (4) lower end movable set is outside aforementioned tube (19).

2, RC Goblin according to claim 1 is characterized in that described support (12) is provided with counterbore (125), is placed with the little steel ball (126) of cushioning effect together in counterbore (125) bottom, and described axle (18) lower end is inserted in the counterbore (125).

3, RC Goblin according to claim 1, it is characterized in that described support (12) is provided with counterbore (125), be placed with in counterbore (125) bottom one can with the shell fragment of described axle (18) Elastic Contact, described axle (18) lower end is inserted in the counterbore (125).

4, according to claim 2 or 3 described RC Goblins, it is characterized in that described support (12) is by last, a theravada (121) apart and a following portion (122) form down, following seat portion (122) combines with theravada (121) by the support portion (123) of periphery, this theravada (121) central authorities are provided with an axis hole (124) that connects, described counterbore (125) is positioned at central authorities of a following portion (122), described pipe (19) lower end is passed above-mentioned axis hole (124) and is fixedly linked with derotation gear (161) on the described driving gear set (16), and the dextrorotation gear (162) that described axle (18) passes on pipe (19) and the described driving gear set (16) is fixedly linked.

5, RC Goblin according to claim 4 is characterized in that described axle (18) is hollow shaft, and the axis hole (124) of described theravada (121) locates to be fixedly connected with hollow pipe (3), in the above-mentioned hollow pipe of described pipe (19) suit (3).

6, RC Goblin according to claim 4 is characterized in that also being set with in the described counterbore (125) steel bushing (127) of stable axis (18), and described axle (18) lower end is inserted in the steel bushing (127).

7, RC Goblin according to claim 1, it is characterized in that described protective jacket (4) upper end is ' ten ' font, ' ten ' word angle is provided with reinforcement (41), and protective jacket (4) upper end salient mounting is in ' ten ' word groove (131) of last rotor (13) center.

8, according to claim 1 or 7 described RC Goblins, it is characterized in that being connected with screw (5) on described protective jacket (4) jacket wall, have locating slot (180) on the described axle (18), described screw (5) front end is installed in the above-mentioned locating slot (180).

9, RC Goblin according to claim 8, it is characterized in that described axle (18) top movable is connected with counterbalance device (2), counterbalance device (2) comprises the balancing stand (21) that is actively socketed on the protective jacket (4) and is fixedly connected on two counterweights (22) on the balancing stand (21) that counterweight (22) hammer stem external port is provided with the rib (220) that prevents hammer body and fly off.

10, RC Goblin according to claim 9 is characterized in that described counterweight (22) and balancing stand (21) connecting portion all are connected with screw, and screw passes the screw on the balancing stand (21) and is stuck in the draw-in groove (23) on counterweight (22) hammer stem.

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