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CN-224218170-U - Brushless motor for unmanned aerial vehicle

CN224218170UCN 224218170 UCN224218170 UCN 224218170UCN-224218170-U

Abstract

The application relates to a brushless motor for an unmanned aerial vehicle, which comprises a stator frame body, a winding group, a rotor frame body, permanent magnets, a ring plate and a rotating shaft, wherein the winding group is provided with a plurality of groups on the stator frame body, the rotating shaft is connected to the stator frame body through a bearing, the rotor frame body is connected to the rotating shaft, the ring plate is detachably connected to the rotor frame body, the permanent magnets are embedded in two blocks on the ring wall in the rotor frame body, a plurality of heat dissipation grooves are formed in the rotor frame body, a stable frame is arranged at the position of the top wall of the rotor frame body corresponding to the edge of the heat dissipation grooves, the position from the periphery of the rotor frame body to the rotating shaft is a reference direction, and the height of the stable frame is gradually increased. The application has the effect of prolonging the service life of the brushless motor.

Inventors

  • YANG XIAOYING

Assignees

  • 深圳市九天展翼科技有限公司

Dates

Publication Date
20260508
Application Date
20250426

Claims (8)

  1. 1. A brushless motor for unmanned aerial vehicle, includes stator support body (1), wire winding group (2), rotor support body (3), permanent magnet (4), deflector (5) and pivot (6), wire winding group (2) are in install a plurality of groups on stator support body (1), pivot (6) are connected through the bearing stator support body (1) is last, rotor support body (3) are connected on pivot (6), wherein ring plate (5) detachable connection is in on rotor support body (3), permanent magnet (4) are in inlay on rotor support body (3) inner ring wall and establish two, it has a plurality of heat dissipation grooves (31) to open on rotor support body (3), rotor support body (3) roof corresponds the position department at heat dissipation groove (31) edge is provided with firm frame (32), follow rotor support body (3) periphery extremely pivot (6) are the reference direction, the height of frame (32) increases gradually.
  2. 2. The brushless motor for an unmanned aerial vehicle according to claim 1, wherein a weight-reducing groove (33) is formed at a position between the top of the rotor frame body (3) and the adjacent two stable frames (32).
  3. 3. The brushless motor for the unmanned aerial vehicle according to claim 1, wherein a lock nut (62) is screwed on the top of the rotating shaft (6), an installation space for installing a screw frame is arranged between the top of the rotor frame body (3) and the lock nut (62), and a screw is arranged between the lock nut (62) and the stable frame (32).
  4. 4. A brushless motor for an unmanned aerial vehicle according to claim 3, wherein the highest part of the stabilizing frame (32) is provided with a plurality of flanges (35), and the screw frame abuts against the flanges (35).
  5. 5. The brushless motor for unmanned aerial vehicle according to claim 1, wherein a connecting component (7) is arranged between the annular plate (5) and the rotor frame body (3), the connecting component (7) comprises an extending block (71) and a clamping claw (72), one end of the extending block (71) is connected to the annular plate (5), the clamping claw (72) is connected to the other end of the extending block (71), an annular step (37) is arranged on the rotor frame body (3), an extending groove (38) is arranged on the rotor frame body (3), a clamping groove (39) is arranged on the extending groove (38), the annular plate (5) is attached to the annular step (37), the extending block (71) enters the extending groove (38), the clamping claw (72) is in clamping fit with the clamping groove (39), and a abutting piece (8) for limiting movement of the clamping claw (72) is arranged at a position corresponding to the clamping groove (39) on the rotor frame body (3).
  6. 6. The brushless motor for unmanned aerial vehicle of claim 5, wherein the abutting piece (8) is an abutting plate, a containing groove is formed in the position, corresponding to the clamping groove (39), of the rotor frame body (3), one end of the abutting piece (8) is integrally formed at one end of the containing groove, and when the abutting piece is matched with the containing groove, the other end of the abutting piece (8) deforms and compresses the clamping claw (72).
  7. 7. The brushless motor for an unmanned aerial vehicle according to claim 1, wherein a plurality of connecting arc plates (36) are provided on the rotor frame body (3), and the plurality of connecting arc plates (36) are uniformly distributed circumferentially around the axis of the rotor frame body (3).
  8. 8. The brushless motor for an unmanned aerial vehicle according to claim 1, wherein a backing ring (34) is connected to the rotor frame body (3), a backing plate (61) is sleeved on the rotating shaft (6), and the backing plate (61) is located between the upper bearing and the backing ring (34).

Description

Brushless motor for unmanned aerial vehicle Technical Field The application relates to the technical field of brushless motors, in particular to a brushless motor for an unmanned aerial vehicle. Background The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. Because the brushless DC motor operates in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation, and oscillation and step-out can not be generated when the load is suddenly changed. The Chinese patent with the bulletin number of CN218041014U discloses a brushless motor structure, which comprises a motor support, a bearing assembly, a stator assembly, a round magnet and a shaft core, wherein the motor support is provided with a mounting part, the bearing assembly is at least partially arranged in the mounting part, the stator assembly is sleeved outside the mounting part, the round magnet is sleeved in the stator assembly, the shaft core is connected to the center of the round magnet, one end of the shaft core is connected to the bearing assembly, and the structure is simple, thereby being beneficial to reducing the product cost. To above-mentioned related art, circular magnet and motor support form closed structure among the prior art, only offer a ventilative groove of usefulness on the motor support, in motor long-time work, the inside heat that produces of motor, especially the motor in the unmanned aerial vehicle field, the motor has the long-time high-load condition during the in-service use, the heat that produces is more, only rely on a groove to dispel the heat, can't realize in the short time motor inner element cooling requirement, cause motor inner element to accelerate ageing, has influenced the life of motor. Disclosure of Invention In order to prolong the service life of the brushless motor, the application provides the brushless motor for the unmanned aerial vehicle. The application provides a brushless motor for an unmanned aerial vehicle, which adopts the following technical scheme: A brushless motor for unmanned aerial vehicle, includes stator support body, wire winding group, rotor support body, permanent magnet, annular plate and pivot, the wire winding group is in install a plurality of groups on the stator support body, the pivot passes through the bearing and connects on the stator support body, the rotor support body is connected in the pivot, the annular plate can be dismantled and be connected on the rotor support body, the permanent magnet is in inlay on the interior annular wall of rotor support body and establish two, it has a plurality of heat dissipation grooves to open on the rotor support body, rotor support body roof corresponds the position department at heat dissipation groove edge is provided with firm frame, follows rotor support body periphery extremely the pivot is the reference direction, the height of firm frame increases gradually. Through adopting above-mentioned technical scheme, through setting up a plurality of radiating grooves, make brushless motor bottom and top form the air convection space, make unmanned aerial vehicle when flying, outside air can dispel the heat to the inside wire winding group of motor at any time, make the inside component of brushless motor work for a long time, reduced the inside component ageing possibility of brushless motor, reduced the possibility of brushless motor trouble, prolonged brushless motor's life. And meanwhile, the stable frame is arranged to strengthen the structural strength of the rotor frame body, reduce the possibility of stress deformation of the rotor frame body in the high-speed rotation process and improve the service life of the rotor frame body. Optionally, a weight-reducing groove is formed at the top of the rotor frame body at a position corresponding to the position between two adjacent stable frames. Through adopting above-mentioned technical scheme, subtract heavy groove and be used for further lightening the weight of rotor support body, when making the screw rotate, drive unmanned aerial vehicle more easily and take off. Optionally, screw thread fit has lock nut at pivot top, rotor support body top extremely be provided with between the lock nut and be used for installing the installation space of spiral shell screw frame, the screw is located lock nut with firm frame between. Through adopting above-mentioned technical scheme, when installing the screw, establish the screw cover in the pivot, rotate lock nut afterwards, make the screw frame be restricted between lock nut and firm frame. The installation steps are simple and quick, and the convenience of the installation of the spiral frame is improved. Optionally, the highest place of firm frame is provided with a plurality of flanges, and the spiral frame is contradicted the flange. Through adopting