Shaftless hollow brushless motor

Abstract

The invention provides a shaftless hollow brushless motor, and relates to the field of laser radars and electric laser heads. The shaftless hollow brushless motor comprises a steel ring, an integratedupper cover is arranged at the top of the steel ring, a driving base is arranged at the bottom of the steel ring, a lower blocking cover is installed on one side of the driving base, and a second bearing is installed on the inner side of the lower blocking cover. According to the shaftless hollow brushless motor, large and middle holes of the integrated upper cover structure can be matched with alaser lens or a prism to rotate along with a motor rotor, the utilization efficiency of the motor is greatly improved, and the radar laser emission part is perfectly isolated from a stator fixing seat through the integrated upper cover by means of the arrangement of the integrated upper cover and the stator fixing seat; dust can be prevented from entering the laser lens, other parts used for laser dust prevention are saved, the overall space of the radar is saved, through the arrangement of a motor fixing base, the whole motor is of a shaftless hollow design, the motor fixing base replaces atraditional motor rotating shaft, the internal space is large, and a larger laser emission system can be carried.

Description

technical field [0001] The invention relates to the technical field of laser radar and electric laser head, in particular to a shaftless hollow brushless motor. Background technique [0002] The brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. Since the brushless DC motor operates in a self-controlled manner, it does not add an additional starting winding to the rotor like a synchronous motor with heavy load under variable frequency speed regulation, nor does it cause oscillation and out of step when the load changes suddenly. The permanent magnets of brushless DC motors with small and medium capacity are now mostly made of rare earth neodymium iron boron (Nd-Fe-B) materials with high magnetic energy levels. Therefore, the volume of the rare earth permanent magnet brushless motor is reduced by one frame size compared with the three-phase asynchronous motor with the same capacity. [0003] At present, lidar motors generally inc...

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Problems solved by technology

[0003] At present, lidar motors generally include casings, permanent magnets, iron core windings, rotating shafts, and bearings, which are not only large in size, low in space utilization, and low in efficiency

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