CN217469591U

CN217469591U - Open type external rotor motor

Info

Publication number: CN217469591U
Application number: CN202220230747.6U
Authority: CN
Inventors: 杨新九; 王达; 李昂然; 付鸣达; 白冰
Original assignee: Tianjin Aviation Mechanical and Electrical Co Ltd
Current assignee: Tianjin Aviation Mechanical and Electrical Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-09-20
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses an open external rotor electric machine, its structure includes motor casing, electric motor rotor, motor stator, shaft coupling, permanent magnet holder, electric motor rotor with shaft coupling fixed connection, constitute the rotary part of motor, motor stator install motor casing's boss on, the shaft coupling both have the function of ordinary shaft coupling, also have the function of ordinary motor shaft simultaneously, electric motor rotor by electric motor rotor yoke, permanent magnet and the permanent magnet holder constitute, motor casing open the ventilation lightening hole that has a certain quantity at circumference surface and rear end. The open type outer rotor motor is simple and compact in structure, convenient to install, space-saving and capable of reducing the weight of the motor.

Description

Open type external rotor motor

Technical Field

The utility model relates to an electrical equipment technical field especially relates to an open external rotor electric machine.

Background

An open type outer rotor motor is a permanent magnet synchronous motor with a rotor outside and a stator inside, and is provided with a stator component, a rotor component, a shaft and other structures like a common outer rotor motor, however, the rotor component of the common outer rotor motor is usually integrated with a shell of the common outer rotor motor or combined with the shell of the common outer rotor motor, the rotor component and the shell are both the rotor component and are mostly of a sealing structure, and when the power of the motor is high and only natural cooling is allowed, the heat dissipation capacity of the motor can be greatly reduced. In addition, the shaft of a common outer rotor motor generally has only a supporting function and does not have a torque transmission function.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-described problem, the utility model provides an open external rotor electric machine, its casing is the installation and the bearing structure of motor, and it has a large amount of ventilation lightening holes to open on the casing, and the axle and the shaft coupling of motor close as an organic wholely, and the part of constituteing the motor is less, and whole volume utilization is high.

In order to achieve the above object, the utility model provides an open external rotor electric machine, including motor casing, electric motor rotor, motor stator, shaft coupling, permanent magnet holder, electric motor rotor with shaft coupling fixed connection, constitute the rotary part of motor, motor stator install motor casing's boss on, the shaft coupling both have the function of ordinary shaft coupling, have the function of ordinary motor shaft again simultaneously, electric motor rotor by motor rotor yoke, permanent magnet and the permanent magnet holder constitute, motor casing open the ventilation lightening hole that has certain quantity at circumference surface and rear end.

Further, on the basis of the design, the motor shell and the stator mounting platform are of an integrated structure, and the motor stator is directly fixed on the mounting platform.

Further, on the basis of the design, the motor shell is provided with a bearing chamber and a resolver chamber, the coupling and the bearing are installed from the front end of the motor shell, and the stator of the resolver is installed from the rear end of the motor shell.

Furthermore, on the basis of the design, the coupler not only has the function of transmitting torque of a common coupler, but also has the functions of supporting and transmitting a common motor shaft.

Further, on the basis of the above design, after the motor stator is mounted on the boss of the motor housing, three fan-shaped fixing pieces are used for fixing the motor stator in the axial direction, and the fan-shaped fixing pieces are fixed on the motor housing through fasteners.

Furthermore, on the basis of the design, the fan-shaped fixing piece not only plays a role of fixing the motor stator, but also plays a role of fixing the front bearing outer ring.

Further, on the basis of the design, the motor shell is provided with 24 rows of rectangular holes on the circumferential surface, and 9 fan-shaped holes at the rear end, and the holes have the functions of weight reduction and ventilation and heat dissipation.

Further, in the above design, a wire-tying ring is mounted at the rear end of the motor housing, and the wire-tying ring can fix the leading-out wire of the motor and the leading-out wire of the resolver to the motor housing.

Furthermore, on the basis of the design, the permanent magnet retainer comprises a front permanent magnet retainer and a rear permanent magnet retainer, the front permanent magnet retainer is installed on a motor rotor magnetic yoke through an installation groove and is fixed through a fastener, the rear permanent magnet retainer is fixed with the end part of the motor rotor magnetic yoke in an adhesive mode, and the permanent magnet retainer plays a role in installation and guide of a permanent magnet and also has a role in fixing the permanent magnet.

The utility model has the advantages that: according to the open type outer rotor motor, under the condition of natural heat dissipation, the heat dissipation condition of the motor is good, the motor shell and the stator mounting platform are of an integrated structure, and the motor shaft and the motor coupler are of an integrated structure, so that the number of parts of the motor is reduced, and the reliability is improved.

Drawings

Fig. 1 is an overall schematic view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the housing;

the motor comprises a motor shell 1, a motor shell 2, a coupler 3, a rotor yoke 4, a front permanent magnet retainer 5, a permanent magnet 6, a rear permanent magnet retainer 7, a motor stator 8, a fixing piece 9, a bearing 10, a wire binding ring 11, a rotary transformer stator 11 and a rotary transformer cover 12.

Detailed Description

The technical solution of the present invention is further described in detail by the following specific embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 and 2, an open type outer rotor motor specifically designed includes a motor housing 1, a coupling 2, a rotor yoke 3, a front permanent magnet holder 4, a permanent magnet 5, a rear permanent magnet holder 6, a motor stator 7, a fixing piece 8, a bearing 9, a wire bundling ring 10, a rotary stator 11, and a rotary cover 12; the rotary transformer stator 11 adopts a rotary transformer stator; motor casing 1 and stator installation boss 13 formula structure as an organic whole, through once processing completion, reduced the error that cooperation and cooperation brought, bearing room 15 and whirl room 16 are located the inside of installation boss 13, and the two all uses the boss as the benchmark to process, have guaranteed good axiality, have reduced the ascending deviation in motor radial, have reduced the risk that motor rotor swept the thorax. After the motor stator 7 is assembled, the motor stator is mounted on the mounting boss 13 from the front end of the housing 1, the bearing 9 is mounted on the motor coupler 2, the motor rotor and the coupler 2 are assembled, the motor stator is similarly mounted in the bearing chamber 15 from the front end of the housing 1, and the stator 11 which is spirally deformed is mounted in the rotating chamber 16 from the rear end of the housing 1 and is fixed by the rotating cover 12. After the motor stator 7 and the coupler 2 are installed on the shell 1, the motor stator and the coupler are fixed on the shell 1 through three fan-shaped fixing pieces 8, the fixing pieces are installed from a waist-shaped hole in the front end of the coupler and are evenly distributed on the circumference, and the fixing pieces not only play a role in fixing the motor stator, but also start a role in fixing the front bearing outer ring.

As shown in fig. 2, the rotor of the motor is composed of a rotor yoke 3, a front permanent magnet holder 4, permanent magnets 5 and a rear permanent magnet holder 6, the front holder 4 is first installed in the rotor yoke 3 and fixed by screws, the permanent magnets 5 are then installed in grooves of the front holder 4, and the rear holder 6 is finally installed on the rotor yoke 3.

As shown in fig. 2, the wire harness ring 10 is attached to the rear end surface of the housing 1, and when the lead wires of the motor stator 7 are led out from the wire outlet hole of the housing 1, the lead wires can be fixed to the housing 1 by the wire harness ring 10, thereby serving as a fixing protection.

As shown in fig. 3, the housing 1 is provided with a certain number of ventilation holes 14 on the outer circumferential surface and the rear end portion during processing, which not only reduces weight, but also starts ventilation and heat dissipation, and the heat of the motor stator 7 is dissipated into the air through the holes on the rear end portion of the housing 1, and the heat of the motor rotor is dissipated into the air through the holes on the outer surface of the housing 1.

The above disclosure is only one or several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. The open type outer rotor motor is characterized by comprising a motor shell, a motor rotor, a motor stator, a coupling and a permanent magnet retainer, wherein the motor rotor is fixedly connected with the coupling to form a rotating part of the motor; the motor stator is arranged on a boss of the motor shell, the motor rotor consists of a motor rotor magnetic yoke, a permanent magnet and the permanent magnet retainer, and a certain number of ventilation lightening holes are formed in the circumferential surface and the rear end part of the motor shell.

2. The open type external rotor motor according to claim 1, wherein the motor housing and the stator mounting platform are of an integral structure, and the motor stator is directly fixed on the mounting platform.

3. The open type external rotor motor according to claim 2, wherein the motor stator is axially fixed by three fan-shaped fixing pieces after being mounted on the boss of the motor housing, and the fan-shaped fixing pieces are fixed to the motor housing by fasteners.

4. The open type external rotor motor according to claim 1, wherein the motor housing has a bearing chamber and a resolver chamber, the coupling and the bearing are installed from the front end of the motor housing, and the resolver stator is installed from the rear end of the motor housing.

5. The open type external rotor motor according to claim 1, wherein the motor housing has 24 rectangular holes in two rows on the circumferential surface and 9 fan-shaped holes at the rear end.

6. The open type external rotor motor according to claim 1, wherein a wire tying ring is installed at a rear end portion of the motor housing, and the wire tying ring can fix a motor lead-out wire and a resolver lead-out wire to the motor housing.

7. The open type external rotor electric machine according to claim 1, wherein the permanent magnet holder includes a front permanent magnet holder and a rear permanent magnet holder; the front permanent magnet retainer is arranged on a motor rotor magnetic yoke through a mounting groove and is fixed through a fastener, the rear permanent magnet retainer is fixed with the end part of the motor rotor magnetic yoke in an adhesive mode, and the permanent magnet retainer is used for mounting and guiding a permanent magnet and fixing the permanent magnet on the other hand.