High-intensity motor rotor for model airplane

Abstract

The invention relates to a high-intensity motor rotor for a model airplane, which is low in manufacturing cost, has collision resistance and is uniform in mass distribution. The high-intensity motor rotor for the model airplane comprises a head cover and a rotating shaft fixedly connected inside a shaft hole on the head cover; a connection screw of the head cover is provided with a hollow passagecoaxially formed with the shaft hole and communicated with the shaft hole; the outside part of the rotating shaft passes through the shaft hole to be inserted in the hollow passage; a plurality of ring-shaped grooves are formed at intervals on the outer peripheral wall of the rotating shaft; and the rotating shaft is fixedly connected with the shaft hole into one whole body by super glue filled inthe ring-shaped grooves. According to the invention, the rotating shaft in a motor is designed into a long shaft from a short shaft in the prior art and is inserted in the hollow passage in the connection screw, so that deformation resistance and fracture resistance of the connection screw are greatly improved. The rotating shaft is fixedly connected with the head cover by epoxy resin, so that machining and assembling efficiency of the head cover is greatly improved, and rotor mass can be guaranteed to be uniformly distributed in a direction of taking the axis as the symmetry axis so as to obtain high flight quality. The high-intensity motor rotor for the model airplane is simple in structure, low in manufacturing cost and few in assembling working time, and can be widely applied to a model external rotation motor.

Description

technical field [0001] The invention relates to a motor, in particular to a motor rotor used for an outrunning motor on a model competitive aircraft. Background technique [0002] The motors used in model airplanes are externally rotating motors. The stator of the externally rotating motor is fixed on the fuselage of the aircraft. The rotor of the externally rotating motor is fixedly connected with the rotor of the aircraft through a connecting screw. The rotor is sleeved on the stator. The coil is set on the stator, and the magnetic poles are set on the rotor. When the current passes through the coil, the rotor wrapped on the stator rotates and drives the rotor to rotate, thereby making the aircraft fly off the ground. [0003] Generally, an externally rotating motor is composed of a rotor, a stator, and a shaft connected between the rotor and the stator. The rotor is composed of a head cover and a casing. The magnetic poles are fixed in the casing, and the casing is fixed ...

AI Technical Summary

Problems solved by technology

[0006] 1) A flat position 8 needs to be made on the rotating shaft 4. When the shaft is pressed into the shaft hole 25, the flat position 8 on the rotating shaft 4 needs to be aligned with the screw hole of the machine meter and then pressed in, adding that the rotating shaft 4 enters the shaft Difficulty in hole 25

[0007] 2) Due to the small size of the head cover 2, when processing the machine screw holes (that is, drilling and tapping), due to the limitation of the operating space, the difficulty is greatly increased, resulting in a substantial increase in processing costs

[0008] 3) After the rotating shaft 4 is pressed into the shaft hole 25, it is necessary to apply glue on the machine screw 7, and then tighten the machine screw 7 in the machine screw hole, resulting in increased assembly hours

[0009] 4) Since the model airplane is an aircraft, it often falls down or collides with other objects due to some reasons during the flight. In the prior art, the connecting screw 21 connected to the rotor and the head cover 2 have an integral structure and are made of aluminum. Alloy material (the head cover 2 is made of light aluminum alloy, one is to reduce the overall weight of the aircraft, and the other is to reduce the load on the rotor 1 when it rotates), when there is an accidental fall or collision, the connection The screw rod 21 is very easy to be dismantled and separated from the head cover 2, causing the whole aircraft to be damaged

[0010] 5) Due to the flat position 8 on the rotating shaft 4, the machine screw hole and the machine screw 7 on the head cover 2, the mass distribution of the entire rotor 1 is unbalanced in the plane where the rotor 1 is located, which will cause the dynamic balance value to be biased. large, thus, affecting flight quality

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