CN216436914U

CN216436914U - Novel mounting structure of external rotor motor

Info

Publication number: CN216436914U
Application number: CN202122075825.8U
Authority: CN
Inventors: 林芊叶
Original assignee: Fujian Xindongming Electric Machinery Co ltd
Current assignee: Fujian Xindongming Electric Machinery Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-05-03
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to the technical field of motors, in particular to a novel mounting structure of an external rotor motor, which comprises a motor shaft, a stator assembly and a rotor assembly, wherein the rotor assembly comprises a shell, the inner wall of the shell is provided with a mounting groove, the mounting groove is connected with a permanent magnet, the shell is provided with a connecting groove, the connecting groove is connected with a retaining ring, the retaining ring is provided with an arc-shaped through groove, the arc-shaped through groove is connected with a locking screw, the locking screw is spirally connected with the shell, the inner wall of the retaining ring is provided with a blocking block, and the blocking block is abutted against the end part of the permanent magnet. When the permanent magnet needs to be replaced, the locking screw is unscrewed, the check ring is rotated, the stop block is separated from the permanent magnet, and then the permanent magnet is pulled to move, so that the permanent magnet is withdrawn from the mounting groove. Through the mode, when the permanent magnet is replaced, the locking bolt only needs to be loosened appropriately, the magnet can be replaced, the situation that the permanent magnet can be replaced only by detaching a plurality of bolts in the prior art is avoided, and the speed of replacing the permanent magnet is improved.

Description

Novel mounting structure of external rotor motor

Technical Field

The utility model relates to the technical field of motors, in particular to a novel mounting structure of an outer rotor motor.

Background

An Electric machine (commonly known as a "motor") is an electromagnetic device that converts or transmits Electric energy according to the law of electromagnetic induction, and is mainly used for converting mechanical energy into Electric energy; the motor can be divided into an inner rotor motor and an outer rotor motor according to the installation mode of the rotor. The outer rotor motor is widely applied to occasions such as household ventilating fans, instruments, range hoods, shoe polishing machines and the like. The rotor has the advantages of large rotational inertia, good heat dissipation, copper wire saving, capability of directly embedding loads such as fan blades and the like on the rotor, and good market prospect.

However, the mounting structure of the outer rotor motor in the current market still has defects when in use, for example, the replacement process of the permanent magnet inside the outer rotor is very inconvenient, so that the maintenance process of the outer rotor needs to consume a lot of time. Based on the technical scheme, the utility model designs a novel mounting structure of an outer rotor motor to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel mounting structure of an outer rotor motor, which is used for solving the technical problem.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel mounting structure of external rotor electric machine, including motor shaft, stator module and rotor subassembly, the rotor subassembly is including the shell, a plurality of mounting grooves have been seted up to the shell inner wall, the cross section of mounting groove is trapezoidal, each the mounting groove all is connected with the permanent magnet, the shell is provided with the spread groove, the spread groove is connected with the retaining ring, a plurality of arcs are seted up to the retaining ring and are led to the groove, and each arc leads to the groove and all is connected with a locking screw, locking screw and shell threaded connection, the retaining ring inner wall is provided with a plurality of blocks the piece, block the piece and set up with the permanent magnet one-to-one, block the tip butt of piece and permanent magnet.

Preferably, the stator assembly is connected with a water retaining ring, a first water retaining bulge is arranged at the bottom of the water retaining ring, the shell is provided with a first groove, and the first water retaining bulge is sleeved in the first groove.

Preferably, the top of the water retaining ring is provided with an inclined plane part.

Preferably, the housing is provided with a second water retaining protrusion, the top of the water retaining ring is provided with a second groove, and the second water retaining protrusion is sleeved in the second groove.

Preferably, a sealing gasket is further arranged between the water retaining ring and the shell.

Compared with the prior art, the utility model has the beneficial effects that: when the permanent magnet needs to be replaced, the locking screw is unscrewed, the check ring is rotated, the stop block is separated from the permanent magnet, and then the permanent magnet is pulled to move, so that the permanent magnet is withdrawn from the mounting groove. Through the mode, when the permanent magnet is replaced, the locking bolt only needs to be loosened appropriately, the magnet can be replaced, the situation that the permanent magnet can be replaced only by detaching a plurality of bolts in the prior art is avoided, and the speed of replacing the permanent magnet is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the housing, the retainer ring and the permanent magnet according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a motor shaft; 2. a stator assembly; 3. a rotor assembly; 4. a housing; 5. mounting grooves; 6. a permanent magnet; 7. connecting grooves; 8. a retainer ring; 9. an arc-shaped through groove; 10. locking the screw; 11. a blocking block; 12. a water retaining ring; 13. a first water retaining projection; 15. a first groove; 16. an inclined plane part; 17. a second water retaining bulge; 18. a second groove; 19. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a novel mounting structure of external rotor electric machine, including motor shaft 1, stator module 2 and rotor subassembly 3, rotor subassembly 3 is including shell 4, a plurality of mounting grooves 5 have been seted up to 4 inner walls of shell, the cross section of mounting groove 5 is trapezoidal, each mounting groove 5 all is connected with permanent magnet 6, shell 4 is provided with spread groove 7, spread groove 7 is connected with retaining ring 8, retaining ring 8 has seted up a plurality of arc and has led to groove 9, each arc leads to groove 9 and all is connected with a locking screw 10,

locking screw

10 and 4 threaded connection of shell, 8 inner walls of retaining ring are provided with a plurality of stop block 11, stop block 11 and the setting of 6 one-to-ones of permanent magnet, stop 11 and the tip butt of permanent magnet 6.

Specifically, the stator assembly 2 is connected with a water retaining ring 12, a first water retaining protrusion 13 is arranged at the bottom of the water retaining ring 12, a first groove 15 is formed in the shell 4, and the first water retaining protrusion 13 is sleeved in the first groove 15.

Specifically, the top of the water retaining ring 12 is provided with an inclined plane part 16. By the provision of the chamfer portion 16, water is prevented from flowing into the gap between the housing 4 and the stator assembly 2 along the water deflector 12.

Specifically, the housing 4 is provided with a second water retaining protrusion 17, the top of the water retaining ring 12 is provided with a second groove 18, and the second water retaining protrusion 17 is sleeved in the second groove 18. The first water blocking protrusion 13 and the second water blocking protrusion 17 cooperate with each other to form a labyrinth seal, thereby reducing the inflow of water into the motor.

Specifically, a sealing gasket 19 is arranged between the water retaining ring 12 and the shell 4. The sealing gasket 19 is arranged to prevent water from flowing into the motor from the gap between the water retaining ring 12 and the shell 4.

One specific application of this embodiment is: when the permanent magnet 6 needs to be replaced, the stator assembly 2 and the rotor assembly 3 are separated. Then, the locking screw 10 is unscrewed, the locking bolt is loosened to fix the retainer ring 8, the retainer ring 8 is rotated to separate the blocking block 11 from the permanent magnet 6, and then the permanent magnet 6 is pulled to move, so that the permanent magnet 6 is withdrawn from the mounting groove 5. In this way, when the permanent magnet 6 is replaced, the magnet can be replaced by only loosening the locking bolt properly, so that the situation that the permanent magnet 6 can be replaced only by disassembling a plurality of bolts in the prior art is avoided, and the speed of replacing the permanent magnet 6 is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a novel mounting structure of external rotor electric machine, including motor shaft (1), stator module (2) and rotor subassembly (3), its characterized in that: rotor subassembly (3) are including shell (4), a plurality of mounting grooves (5) have been seted up to shell (4) inner wall, the cross section of mounting groove (5) is trapezoidal, each mounting groove (5) all are connected with permanent magnet (6), shell (4) are provided with spread groove (7), spread groove (7) are connected with retaining ring (8), a plurality of arcs have been seted up in retaining ring (8) and have been led to groove (9), and each arc leads to groove (9) and all is connected with one locking screw (10), locking screw (10) and shell (4) screw connection, retaining ring (8) inner wall is provided with a plurality of blocks piece (11), block piece (11) and permanent magnet (6) one-to-one setting, block the tip butt of piece (11) and permanent magnet (6).

2. The novel mounting structure of an external rotor motor according to claim 1, wherein: stator module (2) are connected with manger plate circle (12), manger plate circle (12) bottom is provided with first manger plate arch (13), shell (4) are provided with first recess (15), first manger plate arch (13) cover is established in first recess (15).

3. The novel mounting structure of an external rotor motor according to claim 2, wherein: the top of the water retaining ring (12) is provided with an inclined plane part (16).

4. The novel mounting structure of an external rotor motor according to claim 3, wherein: the shell (4) is provided with a second water retaining bulge (17), the top of the water retaining ring (12) is provided with a second groove (18), and the second water retaining bulge (17) is sleeved in the second groove (18).

5. The novel mounting structure of an external rotor motor according to claim 4, wherein: and a sealing gasket (19) is also arranged between the water retaining ring (12) and the shell (4).