WO2009018708A1 - A remote control helicopter - Google Patents

Abstract

A remote control helicopter includes a cover (11), a base (12), a motor (15), a gear assembly (16), a controller (17), the mask (18) and the coaxial pipe (19) which rotate concentrically in the opposite direction driven by the gear assembly (16), the upper rotor (13) connected at the upper end of the mask (18), the lower rotor (14) connected at the upper end of the pipe (19), the stabilizing hammer device (2) connected at the upside of the mask (18), the rod linking structure connecting the upper rotor (13) and the stabilizing hammer device (2). The rod linking structure includes a level rod (20) fixed on the stabilizing hammer device (2), alink block (130) on the upper rotor (13), the two-hole bulb rod with two end hinging the level rod (20) and the link block (130).

Description

 Remote control helicopter

 The present invention relates to a toy, and more particularly to a remote control helicopter that utilizes the up and down pairs of rotors to rotate forward and backward to produce lift changes and direction changes.

Background technique

 The RC helicopter features: two pairs of rotors on the same axis, one pair being a positively rotating rotor and the other pair being a counter-rotating rotor, thereby counteracting the counter-rotation generated by the rotation of the two pairs of rotors. When two pairs of rotors accelerate or decelerate at the same time, the helicopter rises or falls. When one pair of rotors accelerates and the other pair of blades decelerates, the helicopter turns.

 Most of the two-wing RC helicopters currently on the market are larger oil-powered coaxial two-wing RC helicopters, which cannot be mass-produced due to high risk, high cost, low production volume and complicated process. Electric-powered two-wing RC helicopters use wireless control, helicopters. It is free to fly and entertaining, but the electric-powered remote-controlled helicopter is unstable due to the rotation of the wings, making the helicopter unstable and swaying during flight. At the same time, because the electric helicopter inevitably collides with hard objects in actual use, If it collides with the ground when landing, it collides with obstacles such as walls during flight, and is often destroyed by collision. Therefore, it is necessary to improve the structure of existing helicopters to enhance their practical performance.

Summary of the invention

 The present invention overcomes the above technical deficiencies and provides a remote control helicopter with stable flight stability and strong impact resistance.

 In order to achieve the above object, the present invention adopts the following technical solutions:

The invention relates to a remote control helicopter, comprising an organic shell, a base, an upper rotor and a lower rotor, a motor, a transmission gear set and a controller connected to the motor, and the motor and the transmission gear set are mounted on the base, and the base is mounted thereon a rotating shaft and a 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, and the following features: The rotor is fixedly connected to the tube; the upper rotor movable set is at the upper end of the shaft, and a balance hammer device is movably connected to the upper part of the shaft, and a connecting rod connecting structure is arranged between the balance cymbal device and the upper rotor, and the connecting structure of the connecting rod includes The crossbar of the balance hammer device is fixedly connected, the connecting block on the upper rotor, and the double-hole ball joint link with one end of the movable ferrule at the outer end of the crossbar and the other end of the movable ferrule on the connecting block;

 The remote control helicopter as described above is characterized in that the base is composed of an upper seat portion and a lower seat portion which are spaced apart from each other, and the lower seat portion is combined with the upper seat portion by a peripheral support portion, and a center portion of the upper seat portion is provided with a through hole. a shaft hole, a center of the lower seat portion correspondingly provided with a counterbore, the lower end of the tube passing through the shaft hole and fixedly connected with the counter-rotating gear on the transmission gear set, the shaft passing through the tube and the transmission gear set The positive rotation gear is fixedly connected, the lower end of the shaft is inserted in the above-mentioned counterbore, and a small steel ball with a buffering function is placed at the bottom of the counterbore;

 The RC helicopter as described above is characterized in that the counterbore is provided with a steel sleeve of a stable shaft, and the lower end of the shaft is inserted into the steel sleeve;

 The RC helicopter as described above is characterized in that the shaft is a hollow shaft, and a hollow tube is fixedly connected to the shaft hole of the upper seat portion, and the tube is set in the hollow tube;

 The RC helicopter as described above is characterized in that the upper part of the shaft is sleeved with a protective sleeve, the upper end of the protective sleeve is a "ten" shape, the rib of the "ten" character is provided with a reinforcing rib, and the upper end of the protective sleeve is convexly mounted on the upper rotor Inside the "ten" word slot at the center;

 The RC helicopter as described above, characterized in that the sheath of the protective sleeve is screwed on the wall, and the shaft is provided with a positioning groove, and the front end of the screw is locked in the positioning groove;

 The remote control helicopter as described above, characterized in that the counterweight device comprises a balance frame that is slidably sleeved on the protective cover and two balance hammers fixedly connected to the balance frame, and the outer port of the balance hammer hammer bar is provided with an anti-hammer Body detachment rib;

a remote control helicopter as described above, characterized in that the counterweight and the balance frame are The connecting parts are screwed with screws, and the screws pass through the screw holes on the balance frame and are caught in the card slots on the balance hammer rod;

 The remote control helicopter as described above is characterized in that the rear of the casing is provided with a protective frame, and the protective frame is composed of upper and lower clamping plates, and the tail of the casing is sandwiched between the upper and lower clamping plates, and the two ends of the upper clamping plate are Separate boards are provided;

 The RC helicopter as described above is characterized in that the casing is internally provided with a carbon fiber rod, and the carbon fiber rod is located at the tail of the casing.

 The beneficial effects of the invention are:

 1. The upper rotor and the balanced hammer device with balance function are connected by connecting rods, which solves the stable relationship between the balance hammer device and the upper rotor. When the upper rotor is unstable, it can be easily corrected by the balance hammer device. The lever connecting structure formed by the active connection of the upper ball and the balance hammer device improves the stability of the upper rotor, thereby improving the flight stability of the remote control helicopter;

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

 3. The lower side of the shaft fixedly connected with the upper rotor is placed with a small steel ball with a buffering effect. When the remote control plane is lowered, the small steel ball disperses the axial downward impact force in different directions, avoiding the shaft colliding with the support point and causing the shaft to be on the shaft. The positive rotation gear is separated from the motor gear, which improves the flight stability and impact resistance of the remote control helicopter;

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

 The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings: FIG. 1 is an exploded view of the present invention;

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

 Figure 3 is a perspective view of the present invention;

Figure 4 is a cross-sectional view showing the assembly structure of the components at the upper rotor of the present invention; Figure 5 is a cross-sectional view showing the assembly structure of the components of the second group of upper rotors of the present invention; Figure 6 is a cross-sectional view showing the assembly structure of the components of the third group of upper rotors of the present invention; Figure 7 is a schematic view showing the assembly of the internal mechanism and the rotor of the present invention;

 Figure 8 is a cross-sectional view showing the assembled structure of the internal mechanism and the rotor of the present invention;

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

detailed description

 As shown in the figure, the RC helicopter includes an organic casing 11, a base 12, an upper rotor 13 and a lower rotor 14 made of anti-falling tough plastic, a motor 15, a transmission gear set 16 and a controller connected to the motor 15. 17. The motor 15 and the drive gear set 16 are mounted on the base 12, the base 12 is provided with a rotatable shaft 18 and a tube 19, the lower portion of the shaft 18 is fitted within the tube 19, and the shaft 18 and the tube 19 are respectively coupled to the transmission gear set 16 Connected, the lower rotor 14 is fixedly connected to the tube 19; the upper rotor 13 is movably fitted on the upper end of the shaft 18, and the upper part of the shaft 18 is sleeved with a protective sleeve 4, and the lower end of the protective sleeve 4 is sleeved on the tube 19, so that the shaft 18 is secured On the basis of the same axis of rotation of the tube 19, the shaft 18 can be effectively prevented from being bent and deformed; the sleeve of the sleeve 4 is screwed with a screw 5, and the front end of the screw 5 is fitted in the positioning groove 180 on the shaft 18; the upper end of the protective sleeve 4 For the "ten" character shape, the "ten" character is provided with a rib 41 at the corner, and the upper end of the protective sleeve 4 is convexly mounted in the "ten" slot 131 at the center of the upper rotor 13, and the rib 41 can improve the protection sleeve 4 against twisting. performance.

 A balance hammer device 2 is movably connected to the upper portion of the shaft 18, and a link connecting structure is disposed between the counterweight device 2 and the upper rotor 13. The link connecting structure includes a cross bar 20 fixedly connected to the counterweight device 2, located at The connecting block 130 at the center of the upper rotor 13 and the double-hole ball joint link 8 with the movable ferrule at the outer end of the crossbar 20 and the other end of the movable ferrule on the connecting block 130. When the upper rotor 13 is unstable, the balance weight device 2 can easily correct the upper rotor 13 by the lever relationship formed by the crossbar 20 and the double-hole ball joint link 8, so that the upper rotor 13 is quickly restored and stabilized.

The counterweight device 2 includes a balance frame 21 movably sleeved on the protective cover 4 and two balance hammers 22 fixedly connected to the balance frame 21, and the outer balance port of the balance hammer 22 There is a rib 220 that prevents the hammer from flying off. A screw is screwed to the connecting portion of the counterweight 22 and the balance frame 21, and the screw passes through the screw hole on the balance frame 21 and is caught in the slot 23 of the hammer of the counterweight 22 to prevent the fast-rotating balance hammer 22 from being disengaged. The connection is firm and practical.

 Two motors 15 are fixedly connected to the lower portion of the base 12, and the gears on the main shafts of the two motors 15 respectively mesh with the counter-rotating gear 161 and the ortho-rotary gear 162 on the transmission gear set 16, and the shafts 18 and 19 are longitudinally movable. On the base 12. The base 12 is composed of an upper seat portion 121 and a lower seat portion 122 which are spaced apart from each other. The reverse gear 161 and the orbiting gear 162 are located between the upper seat portion 121 and the lower seat portion 122, and the counter-rotor gear 161 is located at the orbiting gear 162. Above. The lower seat portion 122 is coupled to the upper seat portion 121 by a peripheral support portion 123. The upper seat portion 121 is provided with a through hole 124 in the center. The center of the lower seat portion 122 is correspondingly provided with a counterbore 125 having a truncated cone shape. The lower end passes through the shaft hole 124 and is fixedly connected to the counter-rotating gear 161. The shaft 18 is fixedly connected to the orbiting gear 162 through the tube 19, and the lower end of the shaft 18 is inserted into the counterbore 125.

 A small steel ball 126 with a buffering effect is placed at the bottom of the counterbore 125. When the RC helicopter of the present invention is lowered, the shaft 18 moves downward in the axial direction, is pressed against the small steel ball 126, and the small steel ball 126 is forced to be unoriented. Rotating, thereby dispersing the downward impact force of the shaft 18 into different directions, prevents the shaft 18 from damaging the support point and disengaging the ortho-rotor gear 162 on the shaft 18 from the gear on the motor 15. A steel sleeve 127 for stabilizing the shaft 18 is also provided in the counterbore 125, and the lower end of the shaft 18 is inserted into the steel sleeve 127.

 The shaft 18 is a hollow shaft, and the hollow hole 3 is fixedly connected to the shaft hole 124 of the upper seat portion 121. The tube 19 is set in the hollow tube 3, and the hollow tube 3 functions to cover the tube 19 and the tube 19. The shaft 18 enhances the impact resistance of the RC helicopter of the present invention.

Considering that the tail portion of the casing 11 is relatively thin, a protective frame 9 is provided at the tail portion thereof. The protective frame 9 is composed of upper and lower clamping plates 91, 92 and two side plates 93, and the tail portion of the casing 11 is sandwiched between the upper and lower clamping plates 91. Between 92 and 92, the upper and lower splints 91 and 92 are respectively stuck at the two ends. It is installed in the hole 930 of the two side plates 93; a carbon fiber rod 10 is inserted into the tail portion of the casing 11 to improve the impact resistance of the tail portion of the casing 11.

Claims

1. a remote control helicopter comprising an organic casing (11), a base (12), an upper rotor (13) and a lower rotor (14), a motor (15), a transmission gear set (16) coupled to the motor (15), and The controller (17), the motor (15) and the transmission gear set (16) are mounted on the base (12), and the base (12) is provided with a rotatable shaft (18) and a tube (19), the shaft (18) The lower part is disposed in the tube (19), and the shaft (18) and the tube (19) are respectively connected to the transmission gear set (16), wherein the lower rotor (14) is fixedly connected with the tube (19); The upper rotor (13) is movably fitted on the upper end of the shaft (18), and a balance hammer device (2) is movably connected to the upper portion of the shaft (18), and a link is arranged between the balance hammer device (2) and the upper rotor (13). The connecting structure, the connecting rod connecting structure comprises a cross bar (20) fixedly connected with the counterweight device (2), a connecting block (130) on the upper rotor (13), and a movable ferrule at one end outside the crossbar (20) The other end of the movable sleeve is a double-hole ball joint (8) that is sleeved on the connecting block (130).  2. The remote control helicopter according to claim 1, wherein the base (12) is composed of an upper seat portion (121) and a lower seat portion (122) spaced apart from each other, and the lower seat portion (122) passes a peripheral support portion (123) is coupled to the upper seat portion (121), a central shaft hole (124) is formed in the center of the upper seat portion (121), and a counterbore (125) is disposed in the center of the lower seat portion (122). a lower end of the tube (19) passes through the shaft hole (124) and is fixedly coupled to a counter-rotating gear (161) on the transmission gear set (16), the shaft (18) passing through the tube (19) and the transmission The ortho-rotary gear ( 162 ) on the gear set ( 16 ) is fixedly connected, the lower end of the shaft ( 18 ) is inserted into the counterbore ( 125 ) , and a small steel ball with a buffering function is placed at the bottom of the counterbore ( 125 ) ( 126).  3. The remote control helicopter according to claim 2, characterized in that the counterbore (125) is provided with a steel sleeve (127) for stabilizing the shaft (18), and the lower end of the shaft (18) is inserted into the steel sleeve (127) inside. 4. The remote control helicopter of claim 2, wherein the axle (18) is a hollow shaft, a hollow tube (3) is fixedly connected to the shaft hole (124) of the upper seat portion (121), and the tube (19) is fitted in the hollow tube (3).  The remote control helicopter according to claim 1, characterized in that the upper part of the shaft (18) is sleeved with a protective sleeve (4), and the upper end of the protective sleeve (4) is a "ten" shape, and the angle of the "ten" character is A rib (41) is provided, and the upper end of the protective sleeve (4) is protruded into the "ten" slot (131) at the center of the upper rotor (13).  6. The remote control helicopter according to claim 5, characterized in that the sheath (4) is screwed to the sleeve (5), and the shaft (18) is provided with a positioning groove. (180), the front end of the screw (5) is fitted in the positioning groove (180).  7. The remote control helicopter according to claim 5, characterized in that the counterweight device (2) comprises a gimbal (21) movably sleeved on the protective cover (4) and fixedly connected to the gimbal (21) The upper two balancing hammers (22), the counterweight (22), the outer port of the hammer bar is provided with a rib (220) for preventing the hammer from flying off.  8. The remote control helicopter according to claim 7, wherein the balance weight (22) and the balance frame (21) are screwed to the joint portion of the balance frame (21), and the screw passes through the screw hole on the balance frame (21). It is caught in the slot (23) on the hammer of the counterweight (22).  9. The remote control helicopter according to claim 1, wherein the casing (11) is provided with a protective frame (9) at the rear, and the protective frame (9) is composed of upper and lower clamping plates (91, 92). The tail of the casing (11) is sandwiched between the upper and lower clamping plates (91, 92), and the two ends of the upper clamping plate (91) are respectively provided with two side plates (93).  10. The remote control helicopter according to claim 1, wherein the casing (11) is internally provided with a carbon fiber rod (10), and the carbon fiber rod (10) is located in the casing. (11) The tail.