Flat DC brushless motor structure

Abstract

The application provides a flat DC brushless motor structure, which is applied to the field of motor structure equipment and is characterized by a motor shell, a motor stator, a motor rotor and a stator core excitation tooth slot. The motor stator and the motor rotor are arranged in the motor shell, the motor stator is wrapped around the motor rotor, the stator core excitation tooth slot is arranged between the motor stator and the motor rotor, and the motor stator and the motor shell are completely filled. The application solves the technical problem that the current existing DC brushless rotating motor is circular, and only the circular space with the narrowest distance as the diameter can be used in the non-circular assembly space provided by the application, and the remaining space cannot be effectively utilized, resulting in small motor volume and poor performance.

Description

Technical Field

[0001] This application relates to the field of motor structure and equipment technology, and in particular to a flat DC brushless motor structure. Background Technology

[0002] An electric motor, commonly known as a "motor," is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It is divided into electric motors and generators.

[0003] The current working principle of DC motors is that the direction of the force on the conductor is determined by the left-hand rule. This pair of electromagnetic forces forms a torque acting on the armature. This torque is called electromagnetic torque in rotating motors. The direction of the torque is counterclockwise, attempting to make the armature rotate counterclockwise. If this electromagnetic torque can overcome the resistance torque on the armature (such as the resistance torque caused by friction and other load torques), the armature can rotate counterclockwise.

[0004] Existing brushless DC rotary motors are all circular. In the non-circular assembly space provided by their application products, only the circular space with the narrowest distance of this space as the diameter can be used. The remaining space cannot be effectively utilized, resulting in small motor size and weak performance. Utility Model Content

[0005] This application aims to solve the technical problem that existing brushless DC rotary motors are all circular, and in the non-circular assembly space provided by their application products, only the circular space with the narrowest distance of this space as the diameter can be used, and the remaining space cannot be effectively utilized, resulting in small motor size and weak performance. The application provides a flat brushless DC motor structure.

[0006] This application employs the following technical means to solve the technical problem:

[0007] A flat brushless DC motor structure includes a motor housing, a motor stator, a motor rotor, and stator core excitation slots;

[0008] Both the motor stator and the motor rotor are located inside the motor housing. The motor stator covers the motor rotor. The stator core excitation slots are located between the motor stator and the motor rotor. The space between the motor stator and the motor housing is completely filled.

[0009] Furthermore, the stator core excitation slots are discontinuous, and the motor rotor has eight magnetic poles.

[0010] This application provides a flat DC brushless motor structure with the following advantages: It comprises a motor housing, a motor stator, a motor rotor, and stator core excitation slots; both the motor stator and the motor rotor are housed within the motor housing, with the motor stator covering the motor rotor, and the stator core excitation slots located between the motor stator and the motor rotor, resulting in a complete fill between the motor stator and the motor housing; This solves the technical problem that current brushless DC rotary motors are all circular, and in the non-circular assembly space provided for their application products, only the narrowest diameter of this circular space can be used, leaving the remaining space unutilized, leading to small motor size and weak performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the flat brushless DC motor structure of this application.

[0012] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0013] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0014] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0015] It should be noted that the terms "comprising," "including," and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses. Terms such as "first" and "second" in the claims, specification, and accompanying drawings of this application, as well as relational terms, are used merely to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply any such actual relationship or order between these entities / operations / objects.

[0016] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0017] Reference Appendix Figure 1 This is a schematic diagram of the flat brushless DC motor structure in one embodiment of this application.

[0018] A flat brushless DC motor structure includes a motor housing 1, a motor stator 3, a motor rotor 2, and stator core excitation slots 5;

[0019] The motor stator 3 and the motor rotor 2 are both located inside the motor housing 1. The motor stator 3 covers the motor rotor 2. The stator core excitation slot 5 is located between the motor stator 3 and the motor rotor 2. The space between the motor stator 3 and the motor housing 1 is completely filled.

[0020] In this embodiment, the stator core excitation slots 5 are discontinuous, and the motor rotor 2 has 8 magnetic poles 4, which is an additional multiple of 4 magnetic poles 4 required for motor operation.

[0021] Specifically,

[0022] The motor stator 3 is made into a flat shape to adapt to the flat installation space of the product. The stator core excitation slot 5 is made on the wide side, and the stator core excitation slot 5 is not made on the narrow side.

[0023] The outer diameter of the motor rotor 2 is made larger to match the narrow side width of the flat motor housing 1. The inner diameter of the motor stator 3 is adapted to the outer diameter of the motor rotor 2. The number of matching magnets of the motor rotor 2 in the mating area of ​​the stator core excitation slot 5 of the motor stator 3 is set. The number of magnetic poles 4 that are multiples of 2 are inserted into the non-matting area of ​​the stator core excitation slot 5 of the motor rotor 2 magnet. The magnetic poles 4 of the motor rotor 2 magnet are evenly distributed as a whole, and at the same time, they are spatially matched with the stator core excitation slot 5.

[0024] After the motor stator 3 and motor rotor 2 are assembled, the actual working principle of this flat motor housing 1 is the same as that of the existing circular motor, without increasing the control difficulty. The flat motor housing 1 operates on the same principle as the circular 6-slot 4-pole motor. The motor rotor 2 is located on the narrow side of the motor housing 1. The 4-pole magnetic pole 4 is used for connection and transition in the rotation space to ensure the continuity of the stator core excitation slot 5 induction rotor magnetic pole 4.

[0025] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat brushless DC motor structure, characterized in that, This includes the motor housing, motor stator, motor rotor, and stator core excitation slots; Both the motor stator and the motor rotor are located inside the motor housing. The motor stator covers the motor rotor. The stator core excitation slots are located between the motor stator and the motor rotor. The space between the motor stator and the motor housing is completely filled.

2. The flat brushless DC motor structure according to claim 1, characterized in that, The stator core excitation slots are discontinuous, and the motor rotor has eight magnetic poles.

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