CN219227312U

CN219227312U - Brushless motor assembly suitable for automobile radiator fan

Info

Publication number: CN219227312U
Application number: CN202320044382.2U
Authority: CN
Inventors: 尹汉良
Original assignee: Huizhou Shitian Automotive Parts Co ltd
Current assignee: Huizhou Shitian Automotive Parts Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-20
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to a brushless motor assembly suitable for a radiator fan of an automobile, which comprises the following components: the motor comprises a stator fixing frame, a rotor assembly, a stator assembly, a motor base body and a driving circuit board; the stator assembly includes: the device comprises an insulating frame, a plurality of stator iron cores and a plurality of stator coils; the stator cores are uniformly arranged on the outer sides of the insulating frames; the stator coils are uniformly arranged on the inner side of the insulating frame; and the stator coil is insulated from the stator core by the insulating frame; the rotor assembly includes: a rotor core, a rotating shaft and a plurality of magnetic shoes; the magnetic shoes are uniformly injected with glue and fixed in the rotor core; the driving circuit board is arranged in the motor base body; the stator fixing frame is detachably connected with the motor base body to form an assembly accommodating cavity, and the rotor assembly and the stator assembly are accommodated in the assembly accommodating cavity. The brushless motor assembly suitable for the automobile radiator fan is simple and compact in structure, convenient and efficient to install.

Description

Brushless motor assembly suitable for automobile radiator fan

Technical Field

The utility model relates to the technical field of brushless motors, in particular to a brushless motor assembly suitable for an automobile cooling fan.

Background

The existing automobile radiator fan motor is mainly based on a brushless motor driven by square waves. The existing square wave driven brushless motor consists of a housing, a stator assembly, a rotor assembly and a drive circuit board. The rotor assembly comprises a stretching rotor, a magnet and a bearing; the magnets are uniformly attached to the inner side of the stretching rotor, and the bearings are embedded in the two vertical ends of the stretching rotor. The stator assembly is fixed on the motor base, and the driving mode is square wave driving.

Concentricity and quality balance of a stretching rotor of the existing brushless motor are complex in production process, and production precision is difficult to guarantee. In addition, the structure of the existing brushless motor is complex, parts are more, processing is inconvenient, magnet installation is complicated, installation quality is difficult to control, and further the problems that the unbalance amount of a stretching rotor is large, the motor is easy to shake, noise is large, the service life of the motor is short and the like are caused.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a brushless motor assembly suitable for an automobile cooling fan, which has a simple and compact structure, and is convenient and efficient to install.

The aim of the utility model is realized by the following technical scheme:

a brushless motor assembly for an automotive radiator fan, comprising: the motor comprises a stator fixing frame, a rotor assembly, a stator assembly, a motor base body and a driving circuit board;

the stator assembly includes: the device comprises an insulating frame, a plurality of stator iron cores and a plurality of stator coils; the stator cores are uniformly arranged on the outer sides of the insulating frames; the stator coils are uniformly arranged on the inner side of the insulating frame; and the stator coil is insulated from the stator core by the insulating frame;

the rotor assembly includes: a rotor core, a rotating shaft and a plurality of magnetic shoes; the magnetic shoes are uniformly injected with glue and fixed in the rotor core;

the driving circuit board is arranged in the motor base body;

the stator fixing frame is detachably connected with the motor base body to form an assembly accommodating cavity, and the rotor assembly and the stator assembly are accommodated in the assembly accommodating cavity.

As a preferred embodiment, the brushless motor assembly suitable for the automobile radiator fan further comprises a motor rear cover, wherein the motor rear cover is detachably and hermetically connected with the motor base body, and a circuit board accommodating cavity is formed.

As a preferable implementation mode, the motor rear cover is provided with a through hole, and the through hole is sealed by a waterproof rubber plug.

As a preferred embodiment, the insulating frame includes a body and a coil winding frame; the body is connected with the coil winding frame.

As a preferred embodiment, the body includes an upper frame and a lower frame; the upper frame and the lower frame are arranged oppositely, and the stator iron core is respectively fixed on the upper frame and the lower frame.

As a preferred embodiment, a plurality of heat dissipation aluminum grooves are formed in the bottom of the motor base.

As a preferred embodiment, the stator coils are divided into three phases, each three phases being identical, and the stator coils of the same phase are connected by copper wires and finally connected with the driving circuit board.

As a preferred embodiment, the stator fixing frame is provided with a first fixed connection column, and the motor base body is provided with a second fixed connection column; the first fixed connecting column and the second fixed connecting column are respectively provided with a screw through hole, and the first fixed connecting column is connected with the second fixed connecting column through screws.

As a preferred embodiment, the first fixed connection post has a first fixed connection face; the second fixed connection post is provided with a second fixed connection surface.

As a preferred embodiment, the lower frame is provided with a winding pin; the lower frame is provided with outlet pins which are inserted into the motor base body.

Compared with the prior art, the utility model has at least the following technical effects:

the brushless motor assembly suitable for the automobile radiator fan is simple and compact in structure, convenient and efficient to install;

the rotor assembly adopts a glue injection process, and the square magnetic shoe and the rotor core are fixed in a glue injection mode; the glue injection process is carried out by a precision die, so that the square magnetic shoe is not easy to fall off and loose at high temperature; the unbalance of the rotor core can be ensured to be at a very low level, the motor shake and noise are reduced, and the product qualification rate is improved;

according to the utility model, the stator fixing frame and the motor base are connected in a column manner, so that a component accommodating cavity formed by the stator fixing frame and the motor base is a hollow cavity; the stator assembly in the assembly accommodating cavity is fully exposed, heat generated by the stator assembly can be rapidly dissipated, the heat dissipation speed is high, and the efficiency of the motor is improved; moreover, the assembly process is simple, convenient and efficient to operate; when the motor assembly needs to be overhauled, the disassembly is convenient;

the motor rear cover is provided with a through hole, and the through hole is sealed by a waterproof rubber plug; thereby protecting the driving circuit board;

according to the motor assembly, the bottom of the motor seat body is provided with the plurality of heat dissipation aluminum grooves, the driving circuit board is arranged in the circuit board accommodating cavity, heat emitted by the driving circuit board can be immediately dissipated through the motor seat body, faults caused by overheat of the driving circuit board are prevented, the stability of the motor assembly 10 is improved, and the service life of the motor assembly is prolonged;

the first fixed connecting column is provided with a first fixed connecting surface; the second fixed connecting column is provided with a second fixed connecting surface, and in the assembled state, the first fixed connecting surface and the second fixed connecting surface are in contact with the insulating frame to fix the insulating frame, so that the structural stability of the motor assembly is improved;

the utility model adopts the high-performance automobile chip, drives the motor by a sine wave driving method through accurate phase operation, thereby improving the motor efficiency, reducing jitter and noise and prolonging the service life of the motor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram (I) of a brushless motor assembly for a radiator fan of an automobile according to the present utility model;

FIG. 2 is a schematic diagram (II) of a brushless motor assembly for a radiator fan of an automobile according to the present utility model;

FIG. 3 is an exploded view of the brushless motor assembly shown in FIG. 1;

FIG. 4 is an exploded view of the brushless motor assembly shown in FIG. 2;

FIG. 5 is a schematic view of the stator assembly shown in FIG. 4;

FIG. 6 is a schematic diagram (II) of the stator assembly shown in FIG. 4;

FIG. 7 is a schematic view of the rotor assembly of FIG. 4;

FIG. 8 is a schematic view of the rotor assembly of FIG. 4;

FIG. 9 is a schematic diagram (I) of the motor housing shown in FIG. 4;

FIG. 10 is a schematic diagram (II) of the motor housing shown in FIG. 4;

FIG. 11 is a schematic structural view of the stator fixing frame shown in FIG. 4;

FIG. 12 is a schematic structural view of the stator frame shown in FIG. 4 (II);

fig. 13 is a schematic view of the motor rear cover shown in fig. 4.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model 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 "fixed 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 are used herein for illustrative purposes only and are not meant to be the only embodiment.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2 and 3, the present utility model discloses a brushless motor assembly 10 suitable for a radiator fan of an automobile, comprising: stator mount 100, rotor assembly 200, stator assembly 300, motor housing 400, drive circuit board 500, and motor rear cover 600. As shown in fig. 4, the motor rear cover 600 is detachably and hermetically connected with the motor housing 400, and forms a circuit board receiving cavity 700. The driving circuit board 500 is disposed in the motor housing 400. In the present embodiment, the driving circuit board 500 is disposed in the circuit board receiving chamber 700. As shown in fig. 1 and 4, the stator fixing frame 100 is detachably connected to the motor housing 400 to form a component accommodating cavity 800, and the rotor component 200 and the stator component 300 are accommodated in the component accommodating cavity 800. As a preferred embodiment, the stator mount 100 is an aluminum mount.

As shown in fig. 5 and 6, the stator assembly 300 includes: an insulating frame 310, a plurality of stator cores 320, and a plurality of stator coils. The plurality of stator cores 320 are uniformly disposed outside the insulating frame 310. The stator coils are uniformly disposed inside the insulation frame 310. And the stator coil is insulated from the stator core 320 by the insulation frame 310.

As shown in fig. 7 and 8, the rotor assembly 200 includes: rotor core 210, shaft 220 and a plurality of magnetic shoes 230. The plurality of magnetic shoes 230 are uniformly fixed inside the rotor core 210 by glue injection. In this embodiment, the magnetic shoe 230 is a square magnetic shoe 230. Rotor core 210 is further provided with a magnet pressing member 211, and magnet pressing member 211 fixes magnetic shoe 230.

As shown in fig. 11 and 12, in the present embodiment, a shaft hole 110 is provided at a central position of the stator fixing frame 100; the rotating shaft 220 passes through the shaft hole 110, extends out of the component accommodating cavity 800, and is in driving connection with an external driving source.

As shown in fig. 4 and 13, in the present embodiment, the motor rear cover 600 is provided with a through hole 610, and the through hole 610 is sealed by a waterproof rubber plug 620.

As shown in fig. 5 and 6, in the present embodiment, the insulating frame 310 includes a main body 311 and a coil winding frame 312; the body 311 is connected to a coil winding frame 312. The body 311 includes an upper frame 313 and a lower frame 314. The upper frame 313 is disposed opposite to the lower frame 314, and the stator core 320 is fixed to the upper frame 313 and the lower frame 314, respectively. In this embodiment, the upper frame 313 and the lower frame 314 are arranged symmetrically.

As shown in fig. 9 and 10, in the present embodiment, a plurality of heat dissipation aluminum grooves 410 are provided at the bottom of the motor base 400.

In this embodiment, the stator coils are divided into three phases, and each three phases are identical, and the stator coils of the same phase are connected through copper wires and finally connected to the driving circuit board 500.

As shown in fig. 9 to 12, in the present embodiment, the stator mount 100 is provided with a first fixing connection post 120, and the motor housing 400 is provided with a second fixing connection post 420. The first and second fixed connection columns 120 and 420 are respectively provided with screw through holes (121,421), and the first and second fixed connection columns 120 and 420 are connected by screws. Specifically, the first fixed connection column 120 has a first fixed connection surface 121; the second fixed connection post 420 has a second fixed connection face 422.

As shown in fig. 5, 6, 9 and 10, in the present embodiment, the lower frame 314 is provided with a winding pin 315; the lower frame 314 is provided with outlet pins 316, and the outlet pins 316 are inserted into the motor housing 400. Specifically, the motor base 400 is provided with a plurality of sockets 430; the outlet pins 316 of the lower rack 314 are in one-to-one correspondence with the sockets 430.

The following describes the assembly of the brushless motor assembly 10 suitable for use in a radiator fan of an automobile (see also fig. 1 to 13):

the rotor assembly 200 adopts a glue injection process, and the square magnetic shoe 230 and the rotor core 210 are fixed in a glue injection mode; the glue injection process is performed by a precision die, so that the square magnetic shoe 230 is not easy to fall off and loose at high temperature; the unbalance of the rotor core 210 can be ensured to be at a very low level, motor shake and noise are reduced, and the product qualification rate is improved;

the upper frame 313 and the lower frame 314 are arranged symmetrically up and down to form a body 311; the body 311 is a ring insulator; then, the stator cores 320 are uniformly and fixedly arranged on the outer side of the body 311, and the stator cores 320 are respectively connected with the upper frame 313 and the lower frame 314; the coil winding frames 312 are uniformly arranged on the inner side of the body 311; winding the stator coil around the coil winding frame 312; the stator coils are divided into three phases, and each three phases are identical in phase, and the stator coils in the same phase are respectively connected with copper wires and finally connected with the driving circuit board 500; specifically, the lower frame 314 is provided with a plurality of outlet pins 316, and the motor base 400 is provided with a plurality of sockets 430; outlet pins 316 of the lower frame 314 are inserted into sockets 430 of the motor base 400 in one-to-one correspondence, so that the detachable connection of the stator assembly 300 and the motor base 400 is realized;

the rotor assembly 200 movably penetrates through the insulating frame 310 of the stator assembly 300, and the rotating shaft 220 penetrates through the stator fixing frame 100 and extends out to be in driving connection with an external driving source;

the first fixed connection columns 120 of the stator fixing frame 100 are in one-to-one correspondence with the second fixed connection columns 420 of the motor base 400 and are fixedly connected in a screw driving manner; the stator fixing frame 100 is connected with the motor base 400 in a column manner, so that a component accommodating cavity 800 formed by the stator fixing frame 100 and the motor base is a hollow cavity; the stator assembly 300 in the assembly accommodating cavity 800 is fully exposed, heat generated by the stator assembly 300 can be rapidly dissipated, the heat dissipation speed is high, and the efficiency of the motor is improved; moreover, the assembly process is simple, convenient and efficient to operate; when the motor assembly 10 needs to be overhauled, the disassembly is convenient;

the motor rear cover 600 is detachably connected with the motor base 400 in a sealing way, and forms a circuit board accommodating cavity 700, and the driving circuit board 500 is arranged in the circuit board accommodating cavity 700; the motor rear cover 600 is provided with a through hole 610, and the through hole 610 is sealed by a waterproof rubber plug 620; thereby protecting the driving circuit board 500;

according to the utility model, the bottom of the motor base 400 is provided with the plurality of heat dissipation aluminum grooves 410, and the driving circuit board 500 is arranged in the circuit board accommodating cavity 700, so that heat emitted by the driving circuit board 500 can be immediately dissipated through the motor base 400, thereby preventing faults caused by overheat of the driving circuit board 500, improving the stability of the motor assembly 10 and prolonging the service life of the motor assembly 10;

the first fixed connection column 120 of the present utility model has a first fixed connection surface 121; the second fixed connection post 420 has a second fixed connection surface 422, and in the assembled state, the first fixed connection surface 121 and the second fixed connection surface 422 contact the insulating frame 310 to fix the insulating frame 310, thereby improving the structural stability of the motor assembly 10.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A brushless motor assembly for a motor vehicle radiator fan, comprising: the motor comprises a stator fixing frame, a rotor assembly, a stator assembly, a motor base body and a driving circuit board;

the driving circuit board is arranged in the motor base body;

2. The brushless motor assembly of claim 1 further comprising a motor back cover removably sealingly coupled to the motor housing and defining a circuit board receiving cavity.

3. The brushless motor assembly as claimed in claim 2, wherein the motor rear cover is provided with a through hole, and the through hole is sealed by a waterproof rubber plug.

4. The brushless motor assembly for a radiator fan of an automobile as claimed in claim 1, wherein the insulating frame comprises a body and a coil winding frame; the body is connected with the coil winding frame.

5. The brushless motor assembly for a radiator fan of an automobile as claimed in claim 4, wherein the body comprises an upper frame and a lower frame; the upper frame and the lower frame are arranged oppositely, and the stator iron core is respectively fixed on the upper frame and the lower frame.

6. The brushless motor assembly as claimed in claim 4, wherein the motor housing has a plurality of heat dissipation aluminum grooves formed at a bottom thereof.

7. The brushless motor assembly according to claim 1, wherein the stator coils are divided into three phases, each three phases being identical, and the stator coils of the same phase are connected to each other by copper wires and finally connected to the driving circuit board.

8. The brushless motor assembly according to claim 1, wherein the stator fixing frame is provided with a first fixed connection post, and the motor base is provided with a second fixed connection post; the first fixed connecting column and the second fixed connecting column are respectively provided with a screw through hole, and the first fixed connecting column is connected with the second fixed connecting column through screws.

9. The brushless motor assembly for a radiator fan of an automobile as claimed in claim 8, wherein the first fixed connection post has a first fixed connection surface; the second fixed connection post is provided with a second fixed connection surface.

10. The brushless motor assembly for a radiator fan of an automobile as claimed in claim 5, wherein the lower frame is provided with a winding pin; the lower frame is provided with outlet pins; the motor base body is provided with a plurality of sockets; the outlet pins are in one-to-one correspondence with the sockets.