CN214045255U

CN214045255U - Novel structure external rotor electric machine

Info

Publication number: CN214045255U
Application number: CN202023143240.7U
Authority: CN
Inventors: 郑书臣
Original assignee: Hangzhou Haoyuan Technology Co ltd
Current assignee: Hangzhou Haoyuan Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-24
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a novel structure external rotor electric machine, concretely relates to motor technical field, including rotor housing, motor end cover, stator module, fixed axle and bearing, rotor housing's inside demountable installation has the end cover fixed column, and the outside of bearing is equipped with the bearing room, and the through-hole has been seted up to rotor housing's inside. In the scheme, the end cover fixing columns, the mounting holes and the screw holes are matched with one another, the motor end cover can be fixed on the rotor shell through the mounting nails, and the mounting holes are not required to be formed in the two sides of the rotor shell, so that the wall thickness of the shell is reduced, the manufacturing cost is reduced, and the working efficiency of the motor is improved; and through the cooperation of first heat dissipation muscle, second heat dissipation muscle and bearing chamber utilizes a plurality of heat dissipation muscle can increase with the area of contact of outside air to this increases heat exchange efficiency, through setting up the bearing chamber position and being close to the end cover outside, shortens the distance of bearing chamber and external, improves the radiating efficiency.

Description

Novel structure external rotor electric machine

Technical Field

The utility model relates to the technical field of electric machines, more specifically say, the utility model relates to a novel structure external rotor electric machine.

Background

When the stator assembly is fixed on the fan volute through the motor shaft, the rotor and the impeller of the outer rotor motor are driven to synchronously rotate under the action of the magnetic field, and the outer rotor motor is suitable for being installed in the impeller, so that the best cooling effect is achieved, and a V-shaped belt, an additional tension belt or other equipment is not needed.

However, the existing external rotor motor still has the defects that the rotor shell is thick, so that materials are seriously wasted, the manufacturing cost is increased, the weight of the motor is greatly increased, and the practicability is poor; in the traditional structure of the motor, the bearing chamber is arranged on the inner side of the motor end cover, so that heat dissipation of the bearing is not facilitated, and the service life of the bearing is shortened.

Therefore, it is desirable to provide an external rotor motor with a new structure.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a novel structure external rotor electric machine to solve the too big and not good problem of radiating effect of prior art's cost.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a novel structure external rotor electric machine, includes rotor housing, motor end cover, stator module, fixed axle and bearing, rotor housing's inside demountable installation has the end cover fixed column, the outside of bearing is equipped with the bearing room, the through-hole has been seted up to rotor housing's inside, the mounting hole has been seted up in the outside of end cover fixed column, the face that the mounting hole is located is planar structure, the screw hole has been seted up to motor end cover's inside, one side fixed mounting of motor end cover has first heat dissipation muscle, one side fixed mounting of motor end cover has the second heat dissipation muscle.

Preferably, one side of the inner cavity of the rotor shell is movably connected with the outer wall of the motor end cover.

Preferably, the inner wall of the motor end cover is movably sleeved with the outer wall of the fixed shaft, and the inner wall of the stator assembly is fixedly connected with the outer wall of the fixed shaft.

Preferably, the quantity of mounting hole and screw hole is a plurality of, and is the symmetric distribution, the level of mounting hole is the same with the level of screw hole, the inner wall of screw hole is equipped with the installation nail, through installation nail fixed connection between motor end cover and the end cover fixed column.

Preferably, a protruding part is arranged at the center of the motor end cover, one side of an inner cavity of the protruding part is fixedly connected with the outer wall of the bearing, and the inner wall of the bearing is fixedly sleeved with the outer wall of the fixing shaft.

Preferably, the length of the first heat dissipation rib is greater than that of the second heat dissipation rib, and the first heat dissipation rib and the second heat dissipation rib are a plurality of and are symmetrically distributed around the circle.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

in the scheme, the end cover fixing columns, the mounting holes and the screw holes are matched with one another, the motor end cover can be fixed on the rotor shell through the mounting nails, and the mounting holes are not required to be formed in the two sides of the rotor shell, so that the wall thickness of the shell is reduced, the size and the weight of the motor are reduced, the manufacturing cost is reduced, and the working efficiency of the motor is increased; and through the cooperation of first heat dissipation muscle, second heat dissipation muscle and bearing chamber utilizes a plurality of heat dissipation muscle can increase with the area of contact of outside air to this increases heat exchange efficiency, through setting up the bearing chamber position and being close to the end cover outside, shortens the distance of bearing chamber and external, improves the radiating efficiency.

Drawings

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

fig. 2 is a schematic perspective view of a rotor housing according to the present invention;

fig. 3 is a schematic top view of the rotor housing of the present invention;

fig. 4 is a schematic view of the motor end cover of the present invention.

[ reference numerals ]

1. A rotor housing; 2. a motor end cover; 3. a stator assembly; 4. a fixed shaft; 5. a bearing; 6. end cover fixing columns; 7. a bearing chamber; 8. a through hole; 9. mounting holes; 10. screw holes; 11. a first heat dissipation rib; 12. and the second heat dissipation ribs.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The embodiment of the utility model provides a novel structure external rotor motor as attached figures 1-4, including rotor shell 1, motor end cover 2, stator module 3, fixed axle 4 and bearing 5, the inside demountable installation of rotor shell 1 has end cover fixed column 6, the outside of bearing 5 is equipped with bearing room 7, the inside of rotor shell 1 has seted up through-hole 8, the outside of end cover fixed column 6 has seted up mounting hole 9, the face that mounting hole 9 locates is planar structure, the inside of motor end cover 2 has seted up screw hole 10, one side fixed mounting of motor end cover 2 has first heat dissipation muscle 11, one side fixed mounting of motor end cover 2 has second heat dissipation muscle 12; one side of the inner cavity of the rotor shell 1 is movably connected with the outer wall of the motor end cover 2; the inner wall of the motor end cover 2 is movably sleeved with the outer wall of the fixed shaft 4, and the inner wall of the stator assembly 3 is fixedly connected with the outer wall of the fixed shaft 4; the center of the motor end cover 2 is provided with a convex part, one side of the inner cavity of the convex part is fixedly connected with the outer wall of the bearing 5, and the inner wall of the bearing 5 is fixedly sleeved with the outer wall of the fixed shaft 4.

As shown in fig. 2-3, the number of the mounting holes 9 and the number of the screw holes 10 are both a plurality of, and the mounting holes are symmetrically distributed, the horizontal height of the mounting holes 9 is the same as the horizontal height of the screw holes 10, the inner walls of the screw holes 10 are provided with mounting nails, and the motor end cover 2 is fixedly connected with the end cover fixing columns 6 through the mounting nails.

Specifically, the number of the mounting holes 9 is the same as that of the screw holes 10, and each side is not less than three, so that the motor end cover 2 can be stably mounted on one side of the rotor housing 1, and the mounting nails can be screws of various types or other nails with fixing effects.

As shown in fig. 4, the length of the first heat dissipating ribs 11 is greater than that of the second heat dissipating ribs 12, and the first heat dissipating ribs 11 and the second heat dissipating ribs 12 are a plurality of and are symmetrically distributed around the center of the circle.

Specifically, the first heat dissipation rib 11 and the second heat dissipation rib 12 may be specifically made of aluminum, and the first heat dissipation rib 11 and the second heat dissipation rib 12 may increase a contact area with the external air, thereby improving heat exchange efficiency.

The working process of the utility model is as follows:

in the scheme, the end cover fixing columns 6, the mounting holes 9 and the screw holes 10 are matched with each other, the motor end cover 2 can be fixed on the rotor shell 1 through the mounting nails, and the mounting holes 9 are not required to be formed in the two sides of the rotor shell 1, so that the wall thickness of the shell is reduced, the manufacturing cost is reduced, and the working efficiency of the motor is improved;

in the above scheme, the cooperation of first heat dissipation muscle 11, second heat dissipation muscle 12 and bearing room 7 utilizes the first heat dissipation muscle 11 of a plurality of and second heat dissipation muscle 12 not only can increase with the area of contact of outside air to this increases heat exchange efficiency, improves the steadiness of device moreover, through setting up bearing room 7 and putting in 2 outsides near motor end cover, shortens bearing room and external distance, thereby improves the radiating efficiency.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel structure external rotor electric machine, includes rotor housing (1), motor end cover (2), stator module (3), fixed axle (4) and bearing (5), its characterized in that, the inside demountable installation of rotor housing (1) has end cover fixed column (6), the outside of bearing (5) is equipped with bearing room (7), through-hole (8) have been seted up to the inside of rotor housing (1), mounting hole (9) have been seted up in the outside of end cover fixed column (6), the face that mounting hole (9) were located is planar structure, screw hole (10) have been seted up to the inside of motor end cover (2), one side fixed mounting of motor end cover (2) has first heat dissipation muscle (11), one side fixed mounting of motor end cover (2) has second heat dissipation muscle (12).

2. The external rotor motor with a novel structure as claimed in claim 1, wherein one side of the inner cavity of the rotor housing (1) is movably connected with the outer wall of the motor end cover (2).

3. The external rotor motor with a novel structure as claimed in claim 1, wherein the inner wall of the motor end cover (2) is movably sleeved with the outer wall of the fixed shaft (4), and the inner wall of the stator assembly (3) is fixedly connected with the outer wall of the fixed shaft (4).

4. The external rotor motor with a novel structure as claimed in claim 1, wherein the number of the mounting holes (9) and the number of the screw holes (10) are a plurality of, and the mounting holes are symmetrically distributed, the horizontal height of the mounting holes (9) is the same as that of the screw holes (10), the inner walls of the screw holes (10) are provided with mounting nails, and the motor end cover (2) is fixedly connected with the end cover fixing columns (6) through the mounting nails.

5. The external rotor motor with a novel structure according to claim 1, wherein a raised part is arranged at the center of the motor end cover (2), one side of the inner cavity of the raised part is fixedly connected with the outer wall of the bearing (5), and the inner wall of the bearing (5) is fixedly sleeved with the outer wall of the fixed shaft (4).

6. The external rotor electric machine with novel structure as claimed in claim 1, wherein the length of the first heat dissipation ribs (11) is greater than that of the second heat dissipation ribs (12), and the number of the first heat dissipation ribs (11) and the number of the second heat dissipation ribs (12) are several and are distributed in a circle center symmetry manner.