CN210693601U

CN210693601U - Brushless motor capable of preventing circumferential rotation of magnetic steel and rotor core

Info

Publication number: CN210693601U
Application number: CN201922391077.7U
Authority: CN
Inventors: 李海桥; 孔祥文; 王赵
Original assignee: Nantong Wancheng Electromechanical Co Ltd
Current assignee: Nantong Wancheng Electromechanical Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-06-05
Anticipated expiration: 2029-12-27

Abstract

The utility model relates to a brushless motor technical field just discloses prevent magnet steel and rotor core circumferential direction's brushless motor, including casing, fixed suit at the inside multipolar winding stator of casing and rotate the pivot of connecting at the middle part of casing and being located multipolar winding stator inboard, the rotor core that is located the pivot outside is cup jointed through first bolt fastening in the inside of pivot, there is the magnet steel that is located multipolar winding stator inboard in the inside of rotor core through second bolt fastening. This prevent magnet steel and rotor core circumferential direction's brushless motor can be spacing effectively radially going on of the epaxial rotor core of suit in the pivot through set up spacing boss in the pivot, uses through the cooperation of first bolt and annular boss simultaneously for the pivot can carry out spacing fixed simultaneously to rotor core's radial and axial, prevents to produce relative rotation between pivot and the rotor core, improves brushless motor pivoted stationarity.

Description

Brushless motor capable of preventing circumferential rotation of magnetic steel and rotor core

Technical Field

The utility model relates to a brushless motor technical field specifically is to prevent magnet steel and rotor core circumferential direction's brushless motor.

Background

Brushless DC motor is by the permanent magnet rotor, multipolar winding stator, position sensor etc. constitute, wherein the permanent magnet rotor is by the pivot, rotor core and magnet steel are constituteed, the magnet steel majority among the current part brushless motor adopts sticky mode to glue at rotor core, when the magnet steel drives rotor core pivoted under the magnetic field effect, the magnet steel can produce circumferential direction for the pivot, and rotor core adopts the parallel key to fix the suit with rotor core in the pivot, because the length of parallel key is limited can not carry on spacingly to rotor core completely, lead to rotor core to drive the pivot at the pivoted in-process, rotor core can produce circumferential direction relatively the pivot, lead to brushless motor pivoted stationarity relatively poor.

SUMMERY OF THE UTILITY MODEL

The not enough to the background art, the utility model provides a prevent magnet steel and rotor core circumferential direction's brushless motor has solved the problem that above-mentioned background art provided.

The utility model provides a following technical scheme: prevent magnet steel and rotor core circumferential direction's brushless motor, including casing, fixed cover dress at the inside multipolar winding stator of casing and rotate the pivot of connecting at the middle part of casing and being located multipolar winding stator inboard, the rotor core that is located the pivot outside is cup jointed through first bolt fastening in the inside of pivot, rotor core's inside has the magnet steel that is located multipolar winding stator inboard through second bolt fixed mounting.

Preferably, one side of the rotating shaft is provided with a limiting boss.

Preferably, the inner side surface of the rotor core is provided with a limit groove matched with the limit boss.

Preferably, the number of the first bolts is eight, and the eight first bolts are annularly and equidistantly distributed in the interior of the rotor core.

Preferably, the magnetic steel is internally provided with a mounting hole matched with the second bolt.

Preferably, one end of the rotating shaft is provided with a limiting hole which is internally provided with a first bolt in a matched mode.

The utility model discloses possess following beneficial effect:

1. this prevent magnet steel and rotor core circumferential direction's brushless motor can be spacing effectively radially going on of the epaxial rotor core of suit in the pivot through set up spacing boss in the pivot, uses through the cooperation of first bolt and annular boss simultaneously for the pivot can carry out spacing fixed simultaneously to rotor core's radial and axial, prevents to produce relative rotation between pivot and the rotor core, improves brushless motor pivoted stationarity.

2. This prevent magnet steel and rotor core circumferential direction's brushless motor can carry out stable spacing fixed to the radial and axial of magnet steel through the second bolt, has solved the magnet steel majority and has adopted sticky mode to glue at rotor core, and when the magnet steel drove rotor core pivoted under the magnetic field effect, the magnet steel can produce circumferential direction's problem for the pivot.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the rotor core of the present invention.

In the figure: 1. a housing; 2. a multi-pole winding stator; 3. a rotating shaft; 4. a first bolt; 5. a rotor core; 6. a second bolt; 7. and (5) magnetic steel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides an in the attached drawing: the different types of hatching in the figures are not given the national standards, do not require the material of the elements, and distinguish between cross-sectional views of the elements in the figures.

Please refer to fig. 1-2, a brushless motor for preventing circumferential rotation of magnetic steel and rotor core comprises a housing 1, a multi-pole winding stator 2 fixedly sleeved inside the housing 1, and a rotating shaft 3 rotatably connected to the middle of the housing 1 and located inside the multi-pole winding stator 2, wherein the inside of the rotating shaft 3 is fixedly sleeved with a rotor core 5 located outside the rotating shaft 3 through a first bolt 4, and the inside of the rotor core 5 is fixedly provided with a magnetic steel 7 located inside the multi-pole winding stator 2 through a second bolt 6.

Wherein, one side of the rotating shaft 3 is provided with a limit boss.

Wherein, the medial surface of rotor core 5 is provided with the spacing groove with spacing boss looks adaptation.

Wherein, the quantity of first bolt 4 is eight, and eight first bolts 4 annular equidistance distributes in rotor core 5's inside.

Wherein, the inside of magnet steel 7 is seted up the mounting hole with 6 looks adaptations of second bolt.

Wherein, the one end of pivot 3 is provided with the inside spacing hole that is provided with and first bolt 4 looks adaptation.

When the permanent magnet rotor is installed, the rotor core 5 is sleeved on the rotating shaft 3, the rotor core 5 is fixed through the first bolt 4, the magnetic steel 7 is sequentially and fixedly installed on the rotor core 5 through the second bolt 6, and then one end of the rotating shaft 3 is fixedly installed inside the machine shell 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Prevent magnet steel and rotor core circumferential direction's brushless motor, including casing (1), fixed cover dress at the inside multipolar winding stator (2) of casing (1) and rotate and connect at the middle part of casing (1) and be located the inboard pivot (3) of multipolar winding stator (2), its characterized in that: the inside of pivot (3) is through first bolt (4) fixed sleeve joint rotor core (5) that are located the pivot (3) outside, the inside of rotor core (5) has magnet steel (7) that are located multipolar winding stator (2) inboard through second bolt (6) fixed mounting.

2. The brushless electric machine of claim 1, wherein the magnetic steel and the rotor core are prevented from rotating circumferentially, and the brushless electric machine further comprises: and a limiting boss is arranged on one side of the rotating shaft (3).

3. The brushless electric machine of claim 1, wherein the magnetic steel and the rotor core are prevented from rotating circumferentially, and the brushless electric machine further comprises: and a limiting groove matched with the limiting boss is formed in the inner side surface of the rotor core (5).

4. The brushless electric machine of claim 1, wherein the magnetic steel and the rotor core are prevented from rotating circumferentially, and the brushless electric machine further comprises: the number of the first bolts (4) is eight, and the eight first bolts (4) are annularly and equidistantly distributed in the rotor core (5).

5. The brushless electric machine of claim 1, wherein the magnetic steel and the rotor core are prevented from rotating circumferentially, and the brushless electric machine further comprises: and a mounting hole matched with the second bolt (6) is formed in the magnetic steel (7).

6. The brushless electric machine of claim 1, wherein the magnetic steel and the rotor core are prevented from rotating circumferentially, and the brushless electric machine further comprises: one end of the rotating shaft (3) is provided with a limiting hole which is internally provided with a first bolt (4) in a matched mode.