Brushless Motor

Abstract

The application provides a brushless motor (10), which includes: a casing (11), which is used to accommodate a stator body and a rotor with a drive shaft (12); an outlet cover (13), which There is an outlet for said drive shaft (12); and a closure cover (14), opposite said outlet cover (13), which supports an electronic control board for controlling said brushless motor ( 15), and the closure cover includes an output portion for the power cord; the closure cover (14) has a recess (16) for accommodating the electronic control board (15), and the recess is defined relative to the The outer surface (17) of the closure cap (14) is recessed in the axial direction. The brushless motor is easy to assemble, more compact and accessible to electronic control boards, and has no less capacity and efficiency than similar brushless motors of known type.

Description

technical field [0001] The invention relates to a brushless motor. Background technique [0002] The currently known brushless motors generally comprise: a housing for accommodating a stator body and a rotor with a drive shaft; an outlet cover with an outlet for said drive shaft; The outlet cover is opposite, supporting an electronic control board for controlling the brushless motor, and the closure cover includes an outlet for a power cord. [0003] At present, there is an increasing need for a brushless motor which has a compact size both in the axial and radial directions, and at the same time, in which the electronic control board is in a protected The protective position is easily accessible under the circumstances. [0004] In known types of brushless motors, the electronic control board, usually an encoder, is arranged outside a cover inside a shield extending in axial direction outside said cover. [0005] Although this solution has the advantage of allowing easy ...

AI Technical Summary

Problems solved by technology

[0005] Although this solution has the advantage of allowing easy adjustment of the encoder (easy access to the encoder by removing the shield located on the outside of the cover without having to completely disassemble the cover from the brushless motor), this solution has the following disadvantages: It significantly increases the axial footprint of the motor and defines a single output for the cable which is radial with respect to the motor, limiting applications requiring a reduced radial footprint layout

[0007] This arrangement of the encoder, while making the motor axially more compact, makes it impossible to access the encoder unless the cover is removed, which results in less protection and makes it more difficult Synchronous operation between the signal and the rotor field is known to be necessary for the operation of brushless motors

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