CN218549596U

CN218549596U - Rear end is from heat radiation structure rotor and brushless motor

Info

Publication number: CN218549596U
Application number: CN202222791323.XU
Authority: CN
Inventors: 林侨; 陈力平; 刘友辉
Original assignee: Huizhou Haoying Motor Co ltd
Current assignee: Huizhou Haoying Motor Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-02-28
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a rear end is from heat radiation structure rotor and brushless motor, including rotor shaft, rotor core, axle sleeve, wind wheel and two rotor end plates, rotor core the axle sleeve the wind wheel and two the rotor end plate assemble respectively in the rotor shaft is last, and two the rotor end plate centre gripping respectively in both sides around rotor core, the axle sleeve with the wind wheel butt, so that the wind wheel is located the rotor shaft is last. The utility model relates to a rear end is from heat radiation structure rotor and brushless motor, has adopted and has taken the wind wheel structure, when guaranteeing that the motor generates heat high at high-speed operation, has reduced the bulk temperature of motor. The utility model discloses cancelled the outside structure that uses the radiator, used novel rear end from heat radiation structure, set up the wind wheel room promptly through setting up on wind wheel, casing and the rear end cap for electric motor rotor drives the rotation of wind wheel at high-speed pivoted in-process, and the wind wheel rotates in the wind wheel room and makes the inside steam of motor blow off from the rear end cap, then outside air comes in from the fretwork department of casing and forms the flow of air, and then reduces the temperature of motor.

Description

Rear end is from heat radiation structure rotor and brushless motor

Technical Field

The utility model relates to a brushless motor structure field especially relates to a rear end is from heat radiation structure rotor and brushless motor.

Background

At present, brushless motor is more and more extensive in the society, and is also very extensive in the application of duct fan motor, and duct fan motor has become the research focus in present unmanned aerial vehicle field increasingly because it has advantages such as pneumatic efficiency height, thrust are big, compact structure, mobility are strong, security is high noise low.

The inner structure of the ducted motor consists of important parts of a rotor and a stator. The temperature rise of the motor has a great influence on the motor. The temperature rise is the temperature difference between the motor and the environment and is caused by the heating of the motor. The iron loss can be generated when the iron core of the motor in operation is positioned in an alternating magnetic field, the copper loss can be generated after the winding is electrified, other stray losses and the like exist, and the temperature of the motor can be increased. When the temperature of the motor is too high during normal operation, the insulating material of the motor can be melted, short circuit is caused, and the motor can be burnt out. Generally, the thrust of the ducted fan is relatively large, the load and the heat productivity of the motor are also relatively large, and meanwhile, in order to ensure the aerodynamic efficiency of the ducted fan, the inner structural shape of the ducted fan needs to be as smooth as possible and has a rectification effect. Therefore, under the condition of ensuring that the overall aerodynamic efficiency of the ducted fan is good, how to make a good heat dissipation environment of the motor is very critical.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a rear end from heat radiation structure rotor and brushless motor, used the rotor structure of taking novel wind wheel, when guaranteeing that the motor generates heat high at high-speed operation, reduced the bulk temperature of motor.

The purpose of the utility model is realized through the following technical scheme:

a rear-end self-dissipating heat structural rotor, comprising: rotor shaft, rotor core, axle sleeve, wind wheel and two rotor end plates, rotor core the axle sleeve the wind wheel and two the rotor end plate assemble respectively in on the rotor shaft, and two the rotor end plate centre gripping respectively in both sides around rotor core, the axle sleeve with the wind wheel butt, so that the wind wheel is located on the rotor shaft.

In one embodiment, the iron core further comprises a plurality of magnetic shoes, the magnetic shoes are respectively arranged on the iron core in a surrounding mode, and aramid fibers are adopted for winding and fixing.

In one embodiment, glue is arranged between the magnetic tiles and the iron core.

In one embodiment, the two rotor end plates are fitted to the rotor shaft by an interference fit.

In one embodiment, glue is arranged between the wind wheel and the rotor shaft.

In one embodiment, the rotor core, the shaft sleeve, the wind wheel and the two rotor end plates are respectively and coaxially assembled on the rotor shaft.

The utility model also provides a brushless motor, include as above the rear end from the heat radiation structure rotor, still include stator module, casing, front end housing assembly and rear end cap subassembly, the rear end is worn to locate from the heat radiation structure rotor in the stator module, stator module hold in the casing, the front end housing assembly with the rear end cap unit mount in the front and back position department of casing.

In one embodiment, the casing is provided with a plurality of air inlets, and the air inlets are arranged at intervals.

In one embodiment, the rear end cover assembly comprises a rear end cover, wherein a wind wheel chamber and a plurality of air outlet holes are formed in the rear end cover, the wind wheel is installed in the wind wheel chamber, and the wind wheel chamber is communicated with the air outlet holes.

In one embodiment, the stator assembly is coaxially assembled with the front end cover assembly and the rear end cover assembly respectively.

The utility model discloses compare in prior art's advantage and beneficial effect as follows:

the utility model relates to a rear end is from heat radiation structure rotor and brushless motor, has adopted and has taken the wind wheel structure, when guaranteeing that the motor generates heat high at high-speed operation, has reduced the bulk temperature of motor. The utility model discloses cancelled the outside structure that uses the radiator, used novel rear end from heat radiation structure, set up the wind wheel room promptly through setting up on wind wheel, casing and the rear end cap for electric motor rotor drives the rotation of wind wheel at high-speed pivoted in-process, and the wind wheel rotates in the wind wheel room and makes the inside steam of motor blow off from the rear end cap, then outside air comes in from the fretwork department of casing and forms the flow of air, and then reduces the temperature of motor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a rear-end self-radiating structure rotor according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a rear-end self-cooling rotor according to another embodiment shown in FIG. 1;

fig. 3 is a schematic structural diagram of a brushless motor according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a rear end cap according to an embodiment of the present invention;

fig. 5 is a schematic view of an internal structure of a rear end cap according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, a rear-end self-cooling rotor includes: rotor shaft 10, rotor core 20, axle sleeve 30, wind wheel 40 and two rotor end plates 50, rotor core the axle sleeve the wind wheel and two the rotor end plates assemble respectively in rotor shaft is last, and two the rotor end plates centre gripping respectively in rotor core's front and back both sides, the axle sleeve with the wind wheel butt, so that the wind wheel is located rotor shaft is last. It should be noted that the rotor shaft 10 is used for fixing the rotor core 20, the shaft sleeve 30, the wind wheel 40 and the two rotor end plates 50; the rotor core 20 is clamped between two rotor end plates 50, and the shaft sleeve 30 is used for positioning the wind wheel 40; the wind wheel 40 is used for rotating along with the rotor shaft, and further achieves the heat dissipation function of the motor.

Specifically, the motor rotor uses a novel rear end self-heat-dissipation structure, so that the rotor drives the rotation of the wind wheel in the high-speed rotating process, the wind wheel rotates in a wind wheel chamber with a small assembly gap, hot air in the motor can be stably blown out from the rear end cover along a notch, external air enters the motor from the hollow part of the shell to form the circular motion of air, the heat inside the motor is taken out, and the heat dissipation effect of the motor is further improved.

So, take the wind wheel structure through the design, cancelled the outside structure that uses the radiator, used novel rear end from heat radiation structure, such structure makes electric motor rotor drive the rotation of wind wheel at high-speed pivoted in-process, and the wind wheel rotates in the wind wheel room and makes the inside steam of motor blow off from the rear end cap, then outside air comes in from the fretwork department of casing and forms the flow of air, and then reduces the temperature of motor.

Referring to fig. 2, the rear-end self-radiating structure rotor further includes a plurality of magnetic shoes 60, which are respectively disposed around the iron core and wound and fixed by aramid fibers. Furthermore, glue is arranged between the magnetic shoes and the iron core. The magnetic shoe is tightly attached to the groove on the outer surface of the rotor core by structural glue, and the outer surface is wound and reinforced by high-strength aramid fiber.

It should be noted that the two rotor end plates are assembled on the rotor shaft by interference fit. The rotor core and the shaft are coaxially assembled in an interference fit mode, and structural glue is used for reinforcing, so that the overall structural strength of the rotor can be enhanced.

It should be noted that glue is arranged between the wind wheel and the rotor shaft. The wind wheel is positioned by the shaft sleeve and reinforced by structural glue.

It should be noted that the rotor core, the shaft sleeve, the wind wheel and the two rotor end plates are respectively and coaxially assembled on the rotor shaft. The rotor end plate is coaxially assembled to one end of the shaft, the cylindrical surface of the shaft is in interference fit with the inner circular hole of the rotor end plate, and structural glue is used for reinforcement.

Referring to fig. 3 to 5, the present invention further provides a brushless motor, which includes the rear-end self-heat-dissipation structure rotor 100, further includes a stator assembly 200, a casing 300, a front end cover assembly 400 and a rear end cover assembly 500, the rear-end self-heat-dissipation structure rotor is disposed in the stator assembly, the stator assembly is accommodated in the casing, and the front end cover assembly and the rear end cover assembly are mounted at the front and rear end positions of the casing. Therefore, the motor rotor adopts a novel structure with the wind wheel for self heat dissipation, and the rotor rotates and simultaneously drives the wind wheel to rotate, thereby realizing the heat dissipation effect.

Referring to fig. 4, the housing 300 is provided with a plurality of air inlets 310, and the air inlets are spaced apart from each other. Therefore, the front section cover and the rear section cover of the motor and the shell use hollow air inlets, so that the motor wind wheel rotates to form air flow.

Referring to fig. 5, the rear end cover assembly 500 includes a rear end cover 510, and a wind wheel chamber 520 and a plurality of wind outlet holes 530 are formed in the rear end cover, the wind wheel is installed in the wind wheel chamber 520, and the wind wheel chamber is communicated with the wind outlet holes. The wind wheel is positioned by adopting the shaft sleeve, so that the wind wheel can stably rotate in the wind wheel chamber. And the rear end cover is provided with a wind wheel chamber, and when the rear end cover is assembled with a wind wheel, the gap between the wind wheel and the wind wheel chamber is very small, so that wind in the motor can be stably blown out from the rear end cover.

So, the air intake of fretwork is used with the casing to section lid around the motor for the motor wind wheel rotates the flow that drives the inside air of motor, and outside air gets into through the fretwork air intake of casing, has strengthened radiating ability. The wind wheel adopts the axle sleeve location, and the rear end cap is equipped with the very little wind wheel room of fish wind wheel fit-up gap for the inside steam of motor can be stable blow off from the rear end cap can not scatter to both sides, has strengthened the radiating effect of motor.

It should be noted that the stator assembly is coaxially assembled with the front end cover assembly and the rear end cover assembly respectively. The stator assembly and the front end cover assembly are coaxially assembled and fixed by structural glue. The rear end of the stator assembly is coaxially assembled with the rear end cover assembly, the stator outgoing line is outgoing from the line outlet of the rear end cover and is fixed by using a locking screw from the side face. The rotor assembly is assembled on the bearing inner rings of the front end cover group and the rear end cover assembly.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a rear end is from heat radiation structure rotor which characterized in that includes: rotor shaft, rotor core, axle sleeve, wind wheel and two rotor end plates, rotor core the axle sleeve the wind wheel and two the rotor end plate assemble respectively in on the rotor shaft, and two the rotor end plate centre gripping respectively in both sides around rotor core, the axle sleeve with the wind wheel butt, so that the wind wheel is located on the rotor shaft.

2. The rear-end self-radiating structure rotor according to claim 1, further comprising a plurality of magnetic shoes, wherein the plurality of magnetic shoes are respectively arranged on the iron core in a surrounding manner and are wound and fixed by aramid fibers.

3. The rear-end self-heat-dissipation structural rotor of claim 2, wherein glue is arranged between the plurality of magnetic tiles and the iron core.

4. The rear end self heat dissipating structural rotor of claim 1, wherein the two rotor end plates are fitted on the rotor shaft by interference fit.

5. The rear-end self-heat-dissipation structure rotor according to claim 1, wherein glue is arranged between the wind wheel and the rotor shaft.

6. The rear-end self-radiating structure rotor of claim 1, wherein the rotor core, the shaft sleeve, the wind wheel and the two rotor end plates are respectively coaxially assembled on the rotor shaft.

7. A brushless motor, comprising the rear-end self-radiating structure rotor according to any one of claims 1 to 6, further comprising a stator assembly, a housing, a front end cover assembly and a rear end cover assembly, wherein the rear-end self-radiating structure rotor is arranged in the stator assembly in a penetrating manner, the stator assembly is accommodated in the housing, and the front end cover assembly and the rear end cover assembly are mounted at the front end position and the rear end position of the housing.

8. The brushless electric machine of claim 7, wherein the housing defines a plurality of air inlets, and the air inlets are spaced apart from one another.

9. The brushless electric machine of claim 7, wherein the rear end cap assembly comprises a rear end cap, the rear end cap defines a wind wheel chamber and a plurality of wind outlet holes, the wind wheel is mounted in the wind wheel chamber, and the wind wheel chamber is communicated with the wind outlet holes.

10. The brushless electric machine of claim 7, wherein the stator assembly is coaxially assembled with a front end cap assembly and a rear end cap assembly, respectively.