CN201220116Y

CN201220116Y - Toy helicopter airscrew

Info

Publication number: CN201220116Y
Application number: CNU2008200499611U
Authority: CN
Inventors: 林钟华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-25
Filing date: 2008-06-25
Publication date: 2009-04-15
Anticipated expiration: 2018-06-25
Also published as: US20090325455A1

Abstract

The utility model discloses a propeller for a toy helicopter, which avoids the defect of easy damage of a connecting rod, and achieves stability and balance without needing the connecting rod. The propeller for the toy helicopter comprises a rotary shaft which can be connected with a power mechanism of the helicopter, two blades of the propeller and a balance mechanism. The middle part of the balance mechanism is articulated with the rotary shaft, the two blades of the propeller are respectively provided with an extension part, and the extension part is hung on the balance mechanism. The utility model has compact structure and stable balance performance, avoids the defect of easy damage of the connecting rod, and also causes the packaging bulk to be reduced. Connecting parts between the blades of the propeller and the rotary shaft as well as a balance rod and the rotary shaft are thick, have larger strength, and are difficult to damage because the helicopter drops, therefore, the utility model can be used for a model which can fly or a toy helicopter and a vertical lifting aircraft.

Description

The toy helicopter screw

Technical field

But the utility model relates to the flying toy or the model of an airplane, specifically is the screw of fly able toy helicopter or model copter.

Background technology

Fly able electronic toy helicopter is a kind of emerging toy of development in recent years, and main cause is the maturation development of battery energetic and motor microminiaturization, has solved power and flight time that flight needs.But because helicopter weight is little, be subjected to airflow influence easily, the torsion that the screw rotation produces makes the helicopter flight stability relatively poor, and flight is difficult to handle, and particularly the beginner is difficult to helicopter is flown up steadily, safely.For solving this difficult problem, Chinese patent CN2848313Y discloses a kind of electronic toy helicopter, has the propeller unit of balancing pole and two groups of screws, and twin-propeller blade rotation direction is opposite, can offset the reverse rotation power that produces because of rotation, helicopter can balance be flown.The disclosed electronic toy helicopter of CN2848312Y adopts balancing pole, coaxial twin screw and steering unit in the same way to rotate synchronously, keeps having a smooth flight.But because the coaxial bispin wing or main wing and auxiliary rotor balanced controls make aircraft system too complicated, higher fault rate and short service life have occurred, the Plane of rotation of main wing, auxiliary rotor or balancing pole can not change with the angle that drives rotating shaft makes the balance and stability effect still relatively poor.

CN201012293Y discloses a kind of helicopter, have main rotor and auxiliary rotor, main rotor is hingedly mounted on the rotor shaft, the Plane of rotation and the angle between the rotor shaft of main rotor propeller blade can be changed, auxiliary rotor is provided with two horizontal blades, be installed on the swinging axle with the swing relation, main rotor and auxiliary rotor interconnect with mechanical linkage, the angle of attack of the oscillating motion control main rotor propeller blade of auxiliary rotor.This helicopter becomes the Plane of rotation of propeller blade can change awing with angle design between the rotor shaft, has improved the stability of flight greatly.But auxiliary rotor is positioned on the main rotor, makes the helicopter volume big, connects mechanical linkage that main rotor and auxiliary rotor use and fractures easily and damage or come off, and the horizontal blade of auxiliary rotor makes flight big resistance occur and is unfavorable for playing.

CN1944187Y discloses a kind of balanced controls of remote control coaxial double rotor wing model helicopter, comprise balancing pole, last rotor slurry folder, last connecting rod, the hinged driving rotating shaft of last rotor slurry folder, last connecting rod connects balancing pole and last rotor slurry folder, balancing pole or last rotor slurry folder are provided with a plurality of rocking arm bulbs, last connecting rod connects the rocking arm bulb of going up balancing pole and rotor slurry folder, the link position of connecting rod can be regulated, also can change the equilibrant force arm lengths, thereby changed the stability of balanced controls, the operator can select link position according to qualification, thereby reaches suitable balance requirement.It is big that the damage but its connecting rod fractures easily, balancing pole are positioned on the rotor oar helicopter volume, and the beginner also is difficult to hold the link position of connecting rod.

Summary of the invention

The objective of the invention is the defective that is easy to damage for fear of connecting rod, providing a kind of does not need connecting rod and reaches the toy helicopter screw of stable equilibrium's property.

For achieving the above object, helicopter screw propeller of the present utility model comprise can connect the helicopter actuating unit revolve axle, two propeller blades, balanced controls, the hinged axle that revolves in balanced controls middle part, two propeller blades respectively have extension component, and this extension component is suspended on the balanced controls.

Above-mentioned balanced controls can be the balancing pole of end weight greater than interlude, and perhaps there is the auxiliary rotor of foliaceous fin the end.

Two propeller blades preferably adopt the articulated manner connection to revolve axle, and the blade angle of propeller blade can awing be changed.

Between two propeller blades a connection piece can also be arranged, respectively there are trip and fork arm in these connector two ends, and propeller blade has the hole clipping corresponding with this trip, and this fork arm is stuck in the below of propeller blade.

The hinged axle sleeve at balanced controls middle parts is preferably in same plane with the hinge of propeller blade, is preferably formed as 20～90 ° of angles between the hinge of balanced controls and a jointed shaft that revolves spool and propeller blade.

The utility model compact conformation, has stable balance quality, the defective of having avoided connecting rod to be easy to damage, also dwindle packaging volume, propeller blade and balancing pole and the attaching parts of revolving between the axle are thicker, have bigger intensity, are difficult for damaging because of helicopter falls, can be used for fly able model or toy helicopter, the vertical lift aircraft.

Description of drawings

Fig. 1 is a kind of embodiment spare and accessory parts of the utility model exploded views.

Fig. 2 is the cutaway view of Fig. 1 embodiment.

Fig. 3 is the front view of Fig. 1 embodiment.

Fig. 4 is the upward view of Fig. 1 embodiment.

The specific embodiment

As shown in Figure 1, there are balancing pole axle sleeve 2 and

propeller blade hinge

3,4 in axle 1 end of revolving that can connect the helicopter actuating unit,

propeller blade hinge

3,4 is symmetrically straight line and distributes, form 20～90 ° of angles between balancing pole axle sleeve 2 and the

propeller blade hinge

3,4, so that balancing pole and propeller blade have suitable alternate angle to make helicopter be easy to balance.Balancing pole axle sleeve 2 and

propeller blade hinge

3,4 can be on same planes, also can be in Different Plane.

Curl and form axle sleeve 6 in balancing pole 5 middle parts, hinge 7 passes the axle sleeve 6 of balancing pole 5 and revolves the balancing pole axle sleeve 2 of axle 1, makes the balancing pole 5 hinged axles 1 that revolve, and thus, the Plane of rotation of balancing pole 5 can freely change with the angle that revolves axle 1.Respectively there is weight 8 at balancing pole 5 two ends or with the volume overstriking, make balancing pole 5 end weight obviously greater than the middle part to increase counterbalance effect.Weight 8 positions of balancing pole 5 also can be replaced by the foliaceous auxiliary rotor, have counterbalance effect equally.

Propeller blade

9,10 roots respectively have axis hole 11,12, and

propeller blade hinge

3,4 respectively is hinged in propeller blade 9, the 10 corresponding axis holes 11,12.Between the

propeller blade

9,10 connector 15 is arranged, respectively there is

trip

16,17 at these connector 15 two ends, and fork arm 18,19,

propeller blade

9,10 has the

hole clipping

20,21 corresponding with

trip

16,17, and

trip

16,17 correspondences are inserted in the

hole clipping

20,21, and fork arm 18,19 is stuck in the below of

propeller blade

9,10, two propeller blades are fixedly connected by connector 15, and be hinged on revolve the axle 1 on, the blade angle of two propeller blades can freely be changed, but direction is opposite.

Propeller blade

9,10 root lateral positions have fixedly connected

extension component

13,14, this

extension component

13,14 is suspended on above the balancing pole 5 and the light balancing pole 5 of pressing, when balancing pole 5 swings up and down, can drive the blade angle swing of propeller blade, in the helicopter flight process, when the lift that produces when two propeller blades was the same, helicopter will smooth flight.When helicopter was subjected to extraneous interference in air flow to be in labile state, the blade angle of two propeller blades just can change.At this moment, balancing pole just can be controlled the blade angle of propeller blade, makes both sides propeller blade blade angle be returned to original state, keeps the smooth flight of helicopter.

Claims

1. toy helicopter screw, comprise can connect the helicopter actuating unit revolve axle, two propeller blades, balanced controls, it is characterized in that the hinged axle that revolves in described balanced controls middle part, two propeller blades respectively have extension component, and this extension component is suspended on the balanced controls.

2. according to the described toy helicopter screw of claim 1, it is characterized in that described balanced controls are the balancing pole of end weight greater than interlude.

3. according to the described toy helicopter screw of claim 1, it is characterized in that described balanced controls are the auxiliary rotor that there is the foliaceous fin end.

4. according to the described toy helicopter screw of claim 1, it is characterized in that the hinged respectively axle that revolves of described two propeller blades can change the blade angle of propeller blade awing.

5. according to the described toy helicopter screw of claim 4, it is characterized in that between described two propeller blades a connection piece being arranged, respectively there are trip and fork arm in these connector two ends, propeller blade has the hole clipping corresponding with this trip, and this fork arm is stuck in the below of propeller blade.

6. according to the described toy helicopter screw of claim 4, it is characterized in that the hinged axle sleeve at described balanced controls middle part and the hinge of propeller blade are on same plane.

7. according to the described toy helicopter screw of claim 1, it is characterized in that, described balanced controls and revolve the jointed shaft of axle and the hinge of propeller blade between form 20～90 ° of angles.