CN219124061U

CN219124061U - Series excited motor with injection-molded magnet units on outer fan blades

Info

Publication number: CN219124061U
Application number: CN202223496829.4U
Authority: CN
Inventors: 陈冬林; 张建英; 吴锋华
Original assignee: Shenzhen Hengran Motor Co ltd
Current assignee: Shenzhen Hengran Motor Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-02
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to the technical field of motors, in particular to a series excited motor with an injection-molded magnet unit on an outer fan blade, which comprises a rotor assembly, wherein the rotor assembly is arranged in a stator assembly, a front bracket and a rear bracket are respectively arranged at the front end and the rear end of the stator assembly, and the front end and the rear end of the rotor assembly are rotationally connected with the front bracket and the rear bracket; the rear end of the rotor assembly is positioned on the outer side of the rear support, a fan blade is arranged on one side, far away from the rear support, of the fan blade, magnetic columns are arranged in pairs, multiple pairs of magnetic columns can be arranged, one magnetic column is an N pole, and the other magnetic column is an S pole. Compared with the prior art that an interference fit mode is adopted between the inner hole of the magnetic ring and the outer circle of the rotating shaft or the mode that the magnetic ring is additionally provided with a matched metal bushing or plastic bushing and the inner hole of the bushing is in interference fit with the outer circle of the rotating shaft, the magnetic column and the fan blade are formed through an injection molding process, and the scheme of the utility model simplifies the manufacturing and processing process, reduces the cost, and improves the quality and safety.

Description

Series excited motor with injection-molded magnet units on outer fan blades

Technical Field

The utility model relates to the technical field of motors, in particular to a series excited motor with an injection-molded magnet unit on an outer fan blade.

Background

Along with the improvement of the living standard of people and the development of science and technology, the household appliances are more and more intelligent and convenient, the matched motor is also continuously updated, and the magnetic ring and the Hall assembly are continuously applied to the motor and the whole machine. The rotating speed of the motor can be tested by virtue of the induction of the magnetic poles of the magnetic ring and the Hall element, and the PCB control module controls the motor to operate according to the signal provided by the Hall induction magnetic ring.

The magnetic ring on the motor is directly assembled on the rotating shaft, an inner hole of the magnetic ring and the outer circle of the rotating shaft are in interference fit, and the assembled magnetic ring has potential cracking hazards due to the influence of fit tolerance.

When the magnetic ring manufactured by ferrite is used, the hardness is high but also brittle, and the motor runs at high rotation speed, the magnetic ring with cracks easily flies away from the motor under the action of centrifugal force, so that personal injury and death and property loss can be caused.

To improve the defect, a matched metal bushing (or plastic bushing) is added to the magnetic ring, and an inner hole of the bushing is in interference fit with an outer circle of the rotating shaft, so that the motor is complex in process and high in material and manufacturing cost.

Therefore, a person skilled in the art provides a series motor with an injection molded magnet unit on an outer fan blade to solve the above-mentioned problems in the background art.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a series excited motor of an injection-molded magnet unit on an outer fan blade, which comprises a stator assembly, a rotor assembly, a front support and a rear support, wherein the rotor assembly is arranged in the stator assembly, the front support and the rear support are respectively arranged at the front end and the rear end of the stator assembly, the stator assembly is fixedly connected with the front support and the rear support through two screws, the front end and the rear end of the rotor assembly extend out of the front support and the rear support, and the front end and the rear end of the rotor assembly are rotationally connected with the front support and the rear support;

the rear end of the rotor assembly is positioned on the outer side of the rear support, a fan blade is arranged on one side, far away from the rear support, of the fan blade, magnetic columns are arranged in pairs, multiple pairs of magnetic columns can be arranged, one magnetic column is an N pole, and the other magnetic column is an S pole.

Preferably: the magnetic column is processed in the fan blade through an injection molding process.

Preferably: the stator assembly comprises a stator core, stator insulating paper is arranged on the front side and the rear side of the stator core, and stator enameled wires are arranged in two corresponding grooves in the stator core.

Preferably: the end of the stator enameled wire is connected with the inductor, the connection part of the stator enameled wire and the inductor is wound by an insulating adhesive tape and connected with the atomic wire, and the stator enameled wire, the atomic wire and the inductor are fixed together by a nylon ribbon.

Preferably: and an insulating sleeve is sleeved outside the inductor.

Preferably: carbon brush sleeves are arranged on the left side and the right side in the rear support, a carbon brush assembly is arranged in the carbon brush sleeves, a terminal is arranged at one end of the carbon brush assembly, the terminal is connected with a stator enameled wire, and the carbon brush sleeves are fixedly connected with the rear support through rivets.

Preferably: the rotor assembly comprises a rotor core, a plurality of slot wedges are arranged on the rotor core and are connected with a rotor enameled wire, rotor insulating paper is arranged on the front end surface and the rear end surface of the rotor core, rotating shafts are arranged at the front end and the rear end of the rotor core, a commutator is sleeved on the rotating shaft at the rear end, and an end plate is sleeved on the rotating shaft at the front end.

Preferably: bearing chambers are arranged in the front support and the rear support, oil-containing bearings are arranged in the bearing chambers and fixed through bearing pressing sheets, the oil-containing bearings are sleeved on a rotating shaft, and a plurality of gaskets are arranged between end plates and the bearing pressing sheets and between rectifiers and the bearing pressing sheets on the rotating shaft.

Preferably: the left and right sides of the front support are provided with connecting plates, and the connecting plates are fixed with the front support through screws.

The utility model has the technical effects and advantages that:

compared with the prior art that an interference fit mode is adopted between the inner hole of the magnetic ring and the outer circle of the rotating shaft or the mode that the magnetic ring is additionally provided with a matched metal bushing or plastic bushing and the inner hole of the bushing is in interference fit with the outer circle of the rotating shaft, the magnetic column and the fan blade are formed through an injection molding process, and the scheme of the utility model simplifies the manufacturing and processing process, reduces the cost, and improves the quality and safety.

Drawings

Fig. 1 is a perspective view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application;

fig. 2 is a second perspective view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application;

fig. 3 is a front view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application;

fig. 4 is a left side view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application;

fig. 5 is a top view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present disclosure;

fig. 6 is a cross-sectional view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application;

fig. 7 is an exploded view of a series motor with an injection molded magnet unit on an outer fan blade according to an embodiment of the present application.

In the figure:

1. a screw; 2. a connecting plate; 3. a front bracket; 4. an oil-impregnated bearing; 5. tabletting a bearing; 6. a gasket; 7. an end plate; 8. rotor enamelled wires; 9. a rotor core; 10. a slot wedge; 11. a commutator; 12. rotor insulating paper; 13. stator insulating paper; 14. a stator core; 15. a rotating shaft; 16. an insulating tape; 17. stator enamelled wires; 18. nylon ties; 19. an atomic line; 20. an inductance; 21. an insulating sleeve; 22. a terminal; 23. a carbon brush assembly; 24. a carbon brush sleeve; 25. a fan blade; 26. a rear bracket; 27. a rivet; 28. and a magnetic column.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Examples

Referring to fig. 1 to 7, in this embodiment, a series excited motor with an injection molded magnet unit on an outer fan blade is provided, which includes a stator assembly, a rotor assembly, a front support 3 and a rear support 26, wherein the rotor assembly is installed in the stator assembly, the front and rear ends of the stator assembly are respectively provided with the front support 3 and the rear support 26, the stator assembly is fixedly connected with the front support 3 and the rear support 26 through two screws 1, the front and rear ends of the rotor assembly extend out of the front support 3 and the rear support 26, and the front and rear ends of the rotor assembly are rotationally connected with the front support 3 and the rear support 26;

the rear end part of the rotor assembly is positioned at the outer side of the rear bracket 26, a fan blade 25 is arranged at one side of the fan blade 25, which is far away from the rear bracket 26, a magnetic column 28 is arranged in pairs, one magnetic pole is an N pole, and the other magnetic pole is an S pole; in practical application, a plurality of pairs of magnetic poles can be adopted according to practical requirements;

the magnetic column 28 is processed in the fan blade 25 through an injection molding process, and the magnetic column 28 and the fan blade 25 are formed through the injection molding process, so that compared with the mode that in the prior art, an interference fit mode is adopted between an inner hole of a magnetic ring and an outer circle of a rotating shaft or a matched metal bush or a plastic bush is added on the magnetic ring, and the inner hole of the bush is in interference fit with the outer circle of the rotating shaft, the scheme of the application simplifies the manufacturing and processing process, reduces the cost, and improves the quality and safety;

it should be noted here that the PCB control module, that is, the integrated hall element, is located in the whole product, which is the prior art, and is not described in detail;

the stator assembly comprises a stator core 14, stator insulating paper 13 is arranged on the front side and the rear side of the stator core 14 and isolates the electricity between a front bracket 3 and a rear bracket 26, a stator enameled wire 17 is arranged in two corresponding grooves in the stator core 14, the end part of the stator enameled wire 17 is connected with an inductor 20, an atomic wire 19 is wound and connected at the joint of the stator enameled wire 17 and the inductor 20 through an insulating adhesive tape 16, the joint of the insulating adhesive tape 16, the inductor 20 and the inductor 20 is protected by the insulating adhesive tape 16, and the stator enameled wire 17, the atomic wire 19 and the inductor 20 are fixed together through nylon ties 18 and are fixed together, so that disorder is avoided, the appearance of the whole motor is facilitated, and in addition, an insulating sleeve 21 is sleeved outside the inductor 20 for protecting the inductor 20;

carbon brush sleeves 24 are arranged on the left side and the right side in the rear support 26, a carbon brush assembly 23 is arranged in the carbon brush sleeve 24, a terminal 22 is arranged at one end of the carbon brush assembly 23, the terminal 22 is connected with the stator enameled wire 17, and the carbon brush sleeve 24 is fixedly connected with the rear support 26 through rivets 27;

the rotor assembly comprises a rotor core 9, a plurality of slot wedges 10 and rotor enameled wires 8 are arranged on the rotor core 9, rotor insulating paper 12 is arranged on the front end surface and the rear end surface of the rotor core 9, rotating shafts 15 are arranged at the front end and the rear end of the rotor core 9, a commutator 11 is sleeved on the rotating shaft 15 at the rear end, and an end plate 7 is sleeved on the rotating shaft 15 at the front end;

bearing chambers are respectively arranged in the front bracket 3 and the rear bracket 26, an oil-containing bearing 4 is arranged in the bearing chambers, the oil-containing bearing 4 is fixed through a bearing pressing sheet 5, the oil-containing bearing 4 is sleeved on a rotating shaft 15, and a plurality of gaskets 6 are respectively arranged between an end plate 7 and the bearing pressing sheet 5 and between a commutator 11 and the bearing pressing sheet 5 on the rotating shaft 15;

the left side and the right side of the front bracket 3 are both provided with connecting plates 2, the connecting plates 2 are used for fixedly mounting a motor, and the connecting plates 2 and the front bracket 3 are also fixed through screws 1.

According to the utility model, a power supply is externally connected through an atom line 19, a stator enameled wire 17 in a stator assembly is electrified, then the stator assembly rotates a rotor assembly inside the stator assembly under the action of electromagnetic induction, the rotor assembly rotates to enable a rotating shaft 15 to rotate, two ends of the rotating shaft 15 are rotationally connected with a front support 3 and a rear support 26 through bearings 4, so that the front support 3, the rear support 26 and the stator assembly form a fixed main body, the rotating shaft 15 rotates relatively to the rotating shaft, after the rotating shaft 15 rotates, the front end of the rotating shaft can drive a part connected with the rotating shaft to rotate, the conventional function of a motor is realized, a fan blade 25 at the rear end of the rotating shaft rotates, the heat dissipation effect is realized, meanwhile, a magnetic column 28 on the fan blade 25 acts with a PCB control module inside the motor, the rotating speed of the motor can be tested, and the PCB control module controls the motor to operate according to signals provided by the Hall induction magnetic column 28.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. The utility model provides a series excited machine of magnet unit moulds plastics on outer fan blade, includes stator module, rotor subassembly, fore-stock (3) and rear bracket (26), and rotor subassembly installs in stator module, and both ends set up fore-stock (3) and rear bracket (26) respectively around the stator module, its characterized in that:

the stator assembly is fixedly connected with the front support (3) and the rear support (26) through two screws (1), the front and rear ends of the rotor assembly extend out of the front support (3) and the rear support (26), and the front and rear ends of the rotor assembly are rotationally connected with the front support (3) and the rear support (26);

the rear end of the rotor assembly is located on the outer side of the rear support (26), a fan blade (25) is arranged on one side, far away from the rear support (26), of the fan blade (25), magnetic columns (28) are arranged in pairs, multiple pairs of magnetic columns (28) can be arranged, one magnetic column is an N pole, and the other magnetic column is an S pole.

2. A series motor of injection molded magnet units on outer blades according to claim 1, characterized in that the magnetic posts (28) are machined into the blades (25) by an injection molding process.

3. The series excited motor of the injection-molded magnet unit on the outer fan blade according to claim 1, wherein the stator assembly comprises a stator core (14), stator insulation papers (13) are arranged on the front side and the rear side of the stator core (14), and stator enameled wires (17) are arranged in two corresponding grooves in the stator core (14).

4. A series excited machine with an injection molded magnet unit on an outer fan blade according to claim 3, wherein the end of the stator enamelled wire (17) is connected with the inductor (20), the connection part of the stator enamelled wire (17) and the inductor (20) is wound by an insulating adhesive tape (16) and connected with an atomic wire (19), and the stator enamelled wire (17), the atomic wire (19) and the inductor (20) are fixed together by a nylon ribbon (18).

5. The series motor of an injection molded magnet unit on an outer fan blade according to claim 4, wherein an insulating sleeve (21) is further sleeved outside the inductor (20).

6. The series excited motor of the injection-molded magnet unit on the outer fan blade according to claim 1, wherein carbon brush sleeves (24) are arranged on the left side and the right side in the rear support (26), carbon brush assemblies (23) are arranged in the carbon brush sleeves (24), one end of each carbon brush assembly (23) is provided with a terminal (22), the terminal (22) is connected with the stator enameled wire (17), and the carbon brush sleeves (24) are fixedly connected with the rear support (26) through rivets (27).

7. The series excited motor of the injection-molded magnet unit on the outer fan blade according to claim 1, wherein the rotor assembly comprises a rotor core (9), a plurality of slot wedges (10) are arranged on the rotor core (9) and are connected with a rotor enameled wire (8), rotor insulating paper (12) is arranged on the front end surface and the rear end surface of the rotor core (9), rotating shafts (15) are arranged on the front end surface and the rear end surface of the rotor core (9), a commutator (11) is sleeved on the rotating shaft (15) at the rear end, and an end plate (7) is sleeved on the rotating shaft (15) at the front end.

8. The series excited motor of an injection-molded magnet unit on an outer fan blade according to claim 1, wherein bearing chambers are respectively arranged in the front bracket (3) and the rear bracket (26), an oil-containing bearing (4) is arranged in the bearing chambers, the oil-containing bearing (4) is fixed through a bearing pressing sheet (5), the oil-containing bearing (4) is sleeved on a rotating shaft (15), and a plurality of gaskets (6) are respectively arranged between an end plate (7) and the bearing pressing sheet (5), and between a commutator (11) and the bearing pressing sheet (5) on the rotating shaft (15).

9. The series motor of the injection-molded magnet unit on the outer fan blade according to claim 8, wherein the connecting plates (2) are arranged on the left side and the right side of the front support (3), and the connecting plates (2) are fixed with the front support (3) through screws (1).