CN217629004U

CN217629004U - Motor of washing machine

Info

Publication number: CN217629004U
Application number: CN202221669233.7U
Authority: CN
Inventors: 尹功达
Original assignee: Shaoxing Lida Motor Co ltd
Current assignee: Shaoxing Lida Motor Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-10-21
Anticipated expiration: 2032-07-01

Abstract

A motor of a washing machine belongs to the technical field of washing machines. The rotor comprises an outer rotor, an inner shaft, an outer shaft and a stator; an inner rotor and an outer rotor are respectively arranged on the inner side and the outer side of the stator; a coil is arranged on the stator in a surrounding mode, and the outer rotor and the inner rotor are respectively sleeved on the outer ring and the inner ring of the coil; the lower end of the inner shaft is fixed on the outer rotor; the lower end of the outer shaft is fixed on the inner rotor. The utility model has reasonable structure, can properly and effectively wash various types of clothes, has small gaps among the inner rotor, the outer rotor and the stator, supplies controlled compound current to the stator, and forms a periodically changed magnetic field in each coil, so that an integral structure is formed by the inner rotor, the outer shaft and the barrel of the washing machine; the inner shaft and the barrel of the washing machine form another integral structure, the two integral structures are mutually independent to act on the washing machine, energy consumption is saved, and clothes can be better washed.

Description

Motor of washing machine

Technical Field

The utility model belongs to the technical field of washing machine, especially, relate to a washing machine's motor.

Background

Washing machines are mainly used for washing laundry, such as clothes and bedding, in a tub through washing, rinsing, dewatering, and drying processes. The motor of the washing machine is an indispensable part of the washing machine, and the motor of the existing washing machine has a complex structure and high energy consumption.

Therefore, a motor for a washing machine is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a washing machine's motor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a motor of a washing machine comprises an outer rotor, an inner shaft, an outer shaft and a stator; an inner rotor and an outer rotor are respectively arranged on the inner side and the outer side of the stator; a coil is arranged on the stator in a surrounding mode, and the outer rotor and the inner rotor are respectively sleeved on the outer ring and the inner ring of the coil; the lower end of the inner shaft is fixed on the outer rotor; the lower end of the outer shaft is fixed on the inner rotor.

The outer rotor is of a cylindrical structure with a flat bottom and comprises a bottom wall part, a peripheral wall part, a boss part and a plurality of outer magnets; the bottom wall part is arranged at the central opening of the outer rotor, and the bottom wall part is in a circular structure and is positioned at the bottom of the outer rotor; the peripheral wall part is cylindrical and surrounds the bottom wall part; the boss part and the bottom wall part are integrally formed and are positioned in the center of the bottom wall part, a shaft hole is formed in the center of the boss part, and saw teeth are arranged in the shaft hole; the outer magnet is fixed to an inner surface of the peripheral wall portion.

A plurality of slits are arranged on the bottom wall part; the slit gap is arranged around the outer ring of the boss part.

The inner rotor is of a cylindrical structure with a flat bottom and comprises an inner bottom wall part, an inner peripheral wall part, an inner boss part and a plurality of inner magnets; the inner bottom wall part is of a trapezoidal structure and is positioned at the bottom end of the central opening of the inner rotor; the inner wall part is cylindrical and surrounds the outer periphery of the inner bottom wall part; the inner boss part is of a cylindrical structure and is arranged at the center of the inner bottom wall part, a shaft hole is formed in the center of the inner boss part, and saw teeth are arranged in the shaft hole; the inner magnet is fixed to an outer surface of the inner peripheral wall portion.

The inner bottom wall portion is provided with a plurality of working openings; the working opening gap is arranged around the outer ring of the inner boss part.

Mounting parts are arranged at the upper end and the lower end of the inner shaft; the outer wall of installation department encloses and is equipped with the sawtooth, and the below installation department is fixed on boss portion.

The inner diameter of the outer shaft is larger than the outer diameter of the inner shaft, and the upper end and the lower end of the outer shaft are provided with outer mounting parts; the outer wall of outer installation department encloses and is equipped with the sawtooth, and the outer installation department of below is fixed on inner boss portion.

The outer diameter of the stator is smaller than the inner diameter of the outer rotor, the inner diameter of the stator is larger than the outer diameter of the inner rotor, and the stator comprises a main body part and a flange part; the flange portion is engaged with the main body portion and protrudes toward the center of the stator.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has reasonable structure, can properly and effectively wash various types of clothes, has small gaps among the inner rotor, the outer rotor and the stator, supplies controlled compound current to the stator, and the changed electric field can generate a magnetic field and the changed magnetic field can generate an electric field, thereby forming a periodically changed magnetic field in each coil and saving energy consumption; the periodically changing magnetic field acts on the inner magnet and the outer magnet, so that an integral structure is formed by the inner rotor, the outer shaft and the washing machine barrel; the inner shaft and the barrel of the washing machine form another integral structure, and the two integral structures are independent from each other to act on the washing machine, so that clothes can be better washed.

Drawings

FIG. 1 is a first schematic view of a motor of a washing machine;

FIG. 2 is a second schematic structural view of a motor of the washing machine;

in the figure: 10. a support; 20. an outer rotor; 21. a bottom wall portion; 21a, a slit; 22. a peripheral wall portion; 23. a boss portion; 24. an external magnet; 30. an inner rotor; 31. an inner bottom wall portion; 31a, a working opening; 32. an inner peripheral wall portion; 33. an inner boss portion; 34. an inner magnet; 40. an inner shaft; 41. an installation part; 50. an outer shaft; 51. an outer mounting portion; 60. a stator; 60a, a main body; 60b, a flange portion; 61. and a coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an electric motor of a washing machine includes an outer rotor 20, an inner rotor 30, an inner shaft 40, an outer shaft 50, and a stator 60; the inner rotor 30 and the outer rotor 20 are respectively arranged at the inner side and the outer side of the stator 60; a coil 61 is arranged on the stator 60 in a surrounding manner, and the outer rotor 20 and the inner rotor 30 are respectively sleeved on the outer ring and the inner ring of the coil 61; the lower end of the inner shaft 40 is fixed on the outer rotor 20; the outer shaft 50 is fixed at its lower end to the inner rotor 30.

The utility model discloses a motor is used for washing machine, assembles the downside at the washing machine bucket.

Wherein the inner rotor 30 and the outer rotor 20 share the coil 61 of the stator 60, and during use, a compound current can be supplied to the coil 61, so that the inner rotor 30 and the outer rotor 20 can be driven independently.

The outer rotor 20 is a cylindrical structure with a flat bottom, and the outer rotor 20 comprises a bottom wall part 21, a peripheral wall part 22, a boss part 23 and a plurality of outer magnets 24; the bottom wall part 21 is arranged at the central opening of the outer rotor 20, and the bottom wall part 21 is in a circular structure and is positioned at the bottom of the outer rotor 20; the peripheral wall part 22 is arranged outside the bottom wall part 21 in a cylindrical surrounding manner; the boss part 23 is integrally formed with the bottom wall part 21 and is positioned at the center of the bottom wall part 21, a shaft hole is formed in the center of the boss part 23, and saw teeth are arranged in the shaft hole; the outer magnets 24 are fixed to the inner surface of the peripheral wall portion 22.

Wherein the boss portion 23 and the bottom wall portion 21 are integrally formed.

Further, the N poles and S poles of the outer magnets 24 are alternately arranged in the circumferential direction in succession.

The bottom wall part 21 is provided with a plurality of slits 21a, and the slits 21a can be used for heat dissipation; the slit 21a is provided around the boss portion 23 with a clearance.

The inner rotor 30 is a cylindrical structure having a flat bottom, and includes an inner bottom wall portion 31, an inner peripheral wall portion 32, an inner boss portion 33, and a plurality of inner magnets 34; the inner bottom wall portion 31 has a trapezoidal structure and is located at the central open bottom end of the inner rotor 30; the inner peripheral wall portion 32 is cylindrically formed around the outer periphery of the inner bottom wall portion 31; the inner boss part 33 is cylindrical and is arranged at the center of the inner bottom wall part 31, a shaft hole is arranged at the center of the inner boss part 33, and saw teeth are arranged in the shaft hole; the inner magnet 34 is fixed to the outer surface of the inner peripheral wall portion 32.

Wherein the inner boss portion 33 and the inner bottom wall portion 31 are integrally formed.

Further, the N poles and S poles of the inner magnets 34 are alternately arranged in the circumferential direction in succession.

There are small gaps between the inner rotor 30, the outer rotor 20 and the stator 60, and controlled compound current is supplied to the stator 60, and the changing electric field can generate a magnetic field and the changing magnetic field can generate an electric field, so that a periodically changing magnetic field is formed in each coil 61, and energy consumption is reduced.

The periodically varying magnetic field acts on the inner magnet 34 and the outer magnet 24 such that a unitary structure is formed by the inner rotor 30, the outer shaft 50 and the tub of the washing machine; the other integral structure formed by the outer rotor 20, the inner shaft 40 and the tub of the washing machine acts on the washing machine, and the rotating speeds of the inner rotor 30 and the outer rotor 20 are adjusted, so that the washing machine performs washing or dehydration, and can better perform washing of clothes.

The inner bottom wall portion 31 is provided with a plurality of working openings 31; the working opening 31a is disposed around the inner boss 33 with a gap therebetween, and the working opening 31 is used to fix the stator 60 to the tub of the washing machine.

The upper end and the lower end of the inner shaft 40 are both provided with mounting parts 41; the outer wall of the mounting portion 41 is surrounded by serrations, and the lower mounting portion 41 is fixed to the boss portion 23 by bolts so that the lower end portion of the inner shaft 40 is fixed to the outer rotor 20.

The inner diameter of the outer shaft 50 is larger than the outer diameter of the inner shaft 40, and the upper end and the lower end of the outer shaft 50 are provided with outer mounting parts 51; the outer wall of the outer mounting portion 51 is surrounded by serrations, and the lower outer mounting portion 51 is fixed to the inner boss portion 33 by bolts so that the lower end portion of the outer shaft 50 is fixed to the inner rotor 20.

The washing machine motor also comprises a bracket 10 for bearing; the outer shaft 50 is rotatably supported on the bracket 10 of the washing machine motor through a bearing and a ball bearing, and the upper side of the outer shaft 50 is disposed on the tub of the washing machine through the bracket of the washing machine motor.

The inner shaft 40 is inserted through the lower end of the outer shaft 50 such that the upper side of the inner shaft 40 protrudes out of the outer shaft 50 and thus into the tub of the washing machine; the inner shaft 40 is rotatably supported by the tub of the washing machine and the outer shaft 50 through inner bearings.

The outer diameter of the stator 60 is smaller than the inner diameter of the outer rotor 20, the inner diameter of the stator 60 is larger than the outer diameter of the inner rotor 30, and the stator 60 comprises a main body part 60a and a flange part 60b; the flange part 60b is connected with the main body part 60a and protrudes to the center of the stator 60; the main body portion 60a has an annular structure.

The stator 60 is formed by disposing the flange portion 60b at a lower side of the tub of the washing machine.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A motor of a washing machine includes an outer rotor (20), an inner rotor (30), an inner shaft (40), an outer shaft (50), and a stator (60); the motor is characterized in that an inner rotor (30) and an outer rotor (20) are respectively arranged on the inner side and the outer side of the stator (60); a coil (61) is arranged on the stator (60) in a surrounding mode, and the outer rotor (20) and the inner rotor (30) are respectively sleeved on the outer ring and the inner ring of the coil (61); the lower end of the inner shaft (40) is fixed on the outer rotor (20); the lower end of the outer shaft (50) is fixed on the inner rotor (30).

2. A motor for a washing machine as claimed in claim 1, wherein: the outer rotor (20) is of a cylindrical structure with a flat bottom, and the outer rotor (20) comprises a bottom wall part (21), a peripheral wall part (22), a boss part (23) and a plurality of outer magnets (24); the bottom wall part (21) is arranged at the central opening of the outer rotor (20), and the bottom wall part (21) is in a circular structure and is positioned at the bottom of the outer rotor (20); the peripheral wall part (22) is cylindrical and is arranged outside the bottom wall part (21); the boss part (23) is integrally formed with the bottom wall part (21) and is positioned at the center of the bottom wall part (21), a shaft hole is formed in the center of the boss part (23), and sawteeth are arranged in the shaft hole; the outer magnet (24) is fixed to the inner surface of the peripheral wall portion (22).

3. A motor for a washing machine as claimed in claim 2, wherein: a plurality of slits (21 a) are arranged on the bottom wall part (21); the slit (21 a) is arranged around the outer ring of the boss part (23) in a clearance manner.

4. A motor for a washing machine as claimed in claim 1, wherein: the inner rotor (30) is of a cylindrical structure with a flat bottom, and comprises an inner bottom wall part (31), an inner peripheral wall part (32), an inner boss part (33) and a plurality of inner magnets (34); the inner bottom wall part (31) is of a trapezoidal structure and is positioned at the bottom end of the central opening of the inner rotor (30); the inner peripheral wall part (32) is cylindrically arranged around the outer periphery of the inner bottom wall part (31); the inner boss part (33) is of a cylindrical structure and is arranged at the center of the inner bottom wall part (31), the center of the inner boss part (33) is provided with a shaft hole, and saw teeth are arranged in the shaft hole; the inner magnet (34) is fixed to an outer surface of the inner peripheral wall portion (32).

5. The motor of a washing machine as claimed in claim 4, wherein: the inner bottom wall portion (31) is provided with a plurality of working openings (31 a); the working opening (31 a) is arranged around the outer ring of the inner boss part (33) in a clearance mode.

6. A motor for a washing machine according to claim 2, wherein: the upper end and the lower end of the inner shaft (40) are provided with mounting parts (41); the outer wall of installation department (41) encloses and is equipped with the sawtooth, and below installation department (41) are fixed on boss portion (23).

7. The motor of a washing machine as claimed in claim 4, wherein: the inner diameter of the outer shaft (50) is larger than the outer diameter of the inner shaft (40), and the upper end and the lower end of the outer shaft (50) are provided with outer mounting parts (51); sawteeth are arranged on the periphery of the outer wall of the outer mounting part (51), and the lower outer mounting part (51) is fixed on the inner boss part (33).

8. A motor for a washing machine according to claim 1, wherein: the outer diameter of the stator (60) is smaller than the inner diameter of the outer rotor (20), the inner diameter of the stator (60) is larger than the outer diameter of the inner rotor (30), and the stator (60) comprises a main body part (60 a) and a flange part (60 b); the flange portion (60 b) is in contact with the main body portion (60 a) and protrudes toward the center of the stator (60).