CN115411870A

CN115411870A - Separated brushless motor

Info

Publication number: CN115411870A
Application number: CN202110585953.9A
Authority: CN
Inventors: 高爱童
Original assignee: Fuju Co ltd
Current assignee: Fuju Co ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-11-29

Abstract

The invention relates to a separated brushless motor, comprising: a magnetic energy driving set arranged in a first shell and used for generating a magnetic field when being electrified; the magnet group is arranged in a second shell and comprises a plurality of magnets; the rotating shaft comprises a rod body and an inserting part, wherein the rod body is provided with two opposite ends, one end of the rod body integrally extends out of the inserting part, and the inserting part is inserted into the magnetic energy driving group and the magnet group; when the magnetic energy driving group generates a magnetic field, the magnet group is driven to rotate so as to drive the rotating shaft to rotate, and the magnetic energy driving group and the magnet group are arranged separately, so that the effect of flattening is achieved under the condition that the power of the motor is the same as that of a common motor.

Description

Separated brushless motor

Technical Field

A brushless motor, especially a brushless motor with a magnetic driving set and a magnet set separable.

Background

The structure of the conventional motor is roughly divided into a rotor and a stator, wherein one of the motor structures is that a plurality of permanent magnets are arranged on the stator, the rotor is arranged in the stator and is wound with a plurality of groups of coils and is provided with an electric brush, and the electric brush transmits power to the coils to generate a magnetic field when the coils are electrified and generate interaction with the permanent magnets on the stator, so that the rotor rotates under the influence of magnetic force. The motor has a certain usage amount due to simple structure, low manufacturing cost and convenient use.

However, since the brush generates heat due to friction during the rotation of the rotor, and the stator and the rotor are covered by a casing of the motor, the heat generated by the friction is difficult to be discharged out of the casing, and heat dissipation is difficult. In addition, the brush is a consumable product, and is worn due to long-term friction, and the brush must be replaced periodically to maintain the stability of the power supply, which also increases the use cost. In order to maintain a certain rotation speed of the motor, the coils on the rotor must be wound in a plurality of turns in the axial direction, and the magnets must also extend in the axial direction to form a sufficient magnetic force to rapidly rotate the rotor, so that the length of the motor in the axial direction must be increased, and the use is limited by the shape.

Disclosure of Invention

In order to reduce the consumption of the brush of the motor and reduce the heat emitted by the motor during rotation, the invention provides a separated brushless motor, which can be electrified to generate a magnetic field without the brush and reduce the heat generated by friction by separating a magnetic energy driving group and a magnet group.

To achieve the above object, the present invention provides a separated brushless motor comprising:

a first housing, the center of which is concavely provided with a bearing groove, the center of the bearing groove is provided with a first rotating shaft through hole, and a bearing is arranged inside the bearing groove;

a second housing, the center of which is concavely provided with another bearing groove, the center of the bearing groove is provided with another first rotating shaft through hole, and the inside of the bearing groove is provided with another bearing, and the second housing is locked with the first housing by screws;

a magnetic energy driving set wrapped in the first housing, the magnetic energy driving set comprising:

a plurality of coils for generating a magnetic field when energized;

the magnet group is coated in the second cover shell and comprises a plurality of magnets and rotates according to the driving of the magnetic energy driving group;

a rotating shaft, which comprises a rod body and an inserting part, wherein the rod body is provided with two opposite ends, and one end of the rod body integrally extends out of the inserting part; the inserting part of the rotating shaft sequentially passes through the first rotating shaft through hole of the first housing, the bearing in the first housing, the magnet group, the bearing in the second housing and the first rotating shaft through hole of the second housing.

The present invention further provides a separated brushless motor, comprising:

a magnetic energy driving set, comprising:

a plurality of coils for generating a magnetic field when energized;

a magnet group which comprises a plurality of magnets and rotates according to the driving of the magnetic energy driving group;

a first cover case for covering the magnetic energy driving set;

the second housing is separated from the first housing, the second housing covers the magnet group, and the center of the inner side of the second housing is provided with a fixed column which is integrally formed by extending towards the direction of the magnetic energy driving group; a bearing groove is concavely arranged in the center of the second housing, a bearing is arranged in the bearing groove, and the magnet group is fixed on the bearing;

the first housing and the second housing are respectively provided with an annular magnet, and the two annular magnets are respectively arranged at the edges of the first housing and the second housing and are positioned at one side close to the magnetic energy driving group and the magnet group.

The magnetic energy driving set of the invention does not need to rotate and is provided with the coils, and can be directly electrified to generate a magnetic field to drive the magnet set to rotate, thereby reducing the consumption of electric brushes and the generation of heat, and still achieving the same rotating speed under the same power as a common motor. Meanwhile, the structure of the invention can achieve the flattening effect, can be used as a sweeping robot for sweeping the floor in application, can move to the gap between the furniture and the floor to sweep by utilizing the flattening effect, and has better cleaning effect.

In addition, the magnetic energy driving group and the magnet group are arranged separately and are fixed by the annular magnets in a mutual magnetic attraction manner, the magnetic energy driving group can be applied to cleaning the outer side of glass of a building, a cleaner can hold the magnetic energy cleaning device indoors by hand and can install cleaning materials such as cleaning cloth on a structure on one side of the magnet group, the cleaning cloth is driven by the rotation of the magnet group to clean the outer side of the glass, and the cleaner can clean the glass more conveniently and more safely.

Drawings

Fig. 1 is a schematic perspective view illustrating a first preferred embodiment of the present invention.

Fig. 2 is an exploded perspective view of the first preferred embodiment of the present invention.

Fig. 3 is an exploded view of the magnetic energy driving assembly of the present invention.

FIG. 4 is a side sectional view of the first preferred embodiment of the present invention.

Fig. 5 is an exploded view of a magnetic energy driving assembly and a magnet assembly according to a first preferred embodiment of the invention.

FIG. 6 is a side sectional view of a second preferred embodiment of the present invention.

Fig. 7 is an exploded perspective view of a second preferred embodiment of the present invention.

Fig. 8 is a side view of the second preferred embodiment of the present invention in practical use.

Description of the reference numerals

10 magnetic energy driving set

11: coil panel

111: coil slot

113 a fitting hole

115 fixed block

13: coil

15 fixed disk

20 magnet group

21 magnet disk

211 magnet slot

213 second rotating shaft through hole

215 cutting surface

23 magnet

30: rotation axis

31 rod body

33 insertion part

40 first cover

41 bearing groove

411 first rotation axis through hole

43 bearing

45 ring magnet

47,49 screw

50: second housing

51 bearing groove

511 first rotating shaft through hole

53 bearing

55 ring magnet

57 fixing column

60 fixed ring

61 the fitting portion

71 anti-scratch part

73 wiper

75 handle

77 suspension member

78: rope

79 parts of glass.

Detailed Description

Referring to fig. 1 and fig. 2, the present invention discloses a separated brushless motor, comprising: a magnetic energy driving set 10, a magnet set 20, a rotating shaft 30, a first housing 40 and a second housing 50.

Referring to fig. 3, in a first preferred embodiment of the present invention, the magnetic energy driving assembly 10 includes a coil plate 11, a plurality of coils 13 and at least one fixing plate 15. A plurality of coil slots 111 are formed on one surface of the coil panel 11, a fitting hole 113 is formed in the center of the coil panel 11, and a fixing block 115 is disposed in each coil slot 111; each coil 13 is disposed in each coil groove 111, and the center of each coil 13 is sleeved on each fixing block 115; the coil panel 11 and the fixing blocks 115 are provided with a plurality of screw holes at the center, the at least one fixing plate 15 is also provided with a plurality of screw holes with the same number as the coil panel 11 and the fixing blocks 115, the at least one fixing plate 15 is locked on the surface of the coil panel 11 with the plurality of coil slots 111 through the plurality of screw holes and the screws 47, so that each coil 13 is clamped in each coil slot 111 by the coil panel 11 and the fixing plate 15. In the preferred embodiment of the present invention, there are three coils 13 and three coil slots 111.

Referring to fig. 2, the magnet assembly 20 includes a magnet disc 21 and a plurality of magnets 23, wherein a plurality of magnet slots 211 are formed on one surface of the magnet disc 21, a second rotation axis through hole 213 is formed in the center of the magnet disc 21, and a cutting surface 215 is formed on the inner sidewall of the second rotation axis through hole 213; each magnet 23 is disposed in a magnet slot 211. In the preferred embodiment of the present invention, the magnet disc 21 has four magnet slots 211 and four magnets 23, and each magnet slot 211 and each magnet 23 is a quarter circle. A fixing ring 60 is disposed between the magnet assembly 20 and the magnetic energy driving assembly 10, one surface of the fixing ring 60 is integrally formed with a fitting portion 61, and the fitting portion 61 is inserted into the fitting hole 113.

The first cover shell 40 and the second cover shell 50 cover the magnetic energy driving set 10 and the magnet set 20, wherein a

bearing slot

41, 51 is respectively arranged at the center of the first cover shell 40 and the second cover shell 50, and a first rotating shaft through

hole

411, 511 is arranged at the center of each bearing

slot

41, 51; a

bearing

43, 53 is arranged in each bearing

groove

41, 51; the rotating shaft 30 comprises a rod 31 and an inserting portion 33, the rod 31 has two opposite ends, one end of the rod 31 integrally extends out of the inserting portion 33, the other end of the rod is provided with an external thread, and the diameter of the rod 31 is the same as that of the fixing ring 60; the shape of the insertion portion 33 corresponds to the second rotation shaft through hole 213.

Referring to fig. 4, the magnetic energy driving assembly 10 is fixed in the first housing 40 by screws 47, the magnet assembly 20 is covered in the second housing 50, and the second housing 50 is fixed with the first housing 40 by screws 49, such that the magnetic energy driving assembly 10 and the magnet assembly 20 are covered in the first housing 40 and the second housing 50, wherein the inserting portion 33 of the rotating shaft 30 sequentially passes through the first rotating shaft through hole 411 of the first housing 40, the bearing 43, the fixing ring 60, the second rotating shaft through hole 213 of the magnet assembly 20, the bearing 53, and the first rotating shaft through hole 511 of the second housing 50. By the design of the present invention, the magnetic energy driving set 10 is equivalent to a stator of a conventional motor, the magnet set 20 is equivalent to a rotor of a conventional motor, when the plurality of coils 13 are energized, a magnetic field is generated, and the magnetic field generated by the plurality of coils 13 interacts with the plurality of magnets 23, so that the magnet set 20 rotates along the rotation axis 30; meanwhile, since the insertion portion 33 of the rotating shaft 30 is engaged with the second rotating shaft through hole 213, the rotating shaft 30 is driven to rotate when the magnet assembly 20 rotates.

Referring to fig. 5, in the second preferred embodiment of the present invention, the difference from the first preferred embodiment is that the magnetic energy driving set 10 is fixed in the first casing 40, the magnet set 20 is fixed in the second casing 50, and the magnetic energy driving set 10 and the magnet set 20 are separately disposed.

Referring to fig. 6 and 7, in a second preferred embodiment of the present invention, the first casing 40 and the second casing 50 are respectively provided with a

ring magnet

45, 55, and the two

ring magnets

45, 55 are respectively disposed at the edges of the first casing 40 and the second casing 50 and located at a side close to the magnetic energy driving set 10 and the magnet set 20. The two

ring magnets

45, 55 can be strong magnets, so that the first casing 40 and the second casing 50 can be respectively disposed on two sides of an object, such as the inner and outer sides of the glass 79 of a window, and are attracted to each other by the two

ring magnets

45, 55 to be fixed on the glass 79 without falling.

A fixed column 57 is provided in the center of the inner side of the second housing 50, and the fixed column 57 is integrally formed by extending towards the magnetic energy driving assembly 10; the bearing 53 is sleeved on the fixing column 57, and the magnet assembly 20 is fixed on the bearing 53, so that the magnet assembly 20 can rotate around the fixing column 57; each of the

ring magnets

45, 55 is covered by a scratch-proof member 71, the scratch-proof member 71 is used to prevent the

ring magnets

45, 55 from directly rubbing the object to scratch the surface of the object, and provide friction force to prevent the first casing 40 and the second casing 50 from slipping off; the scratch-resistant member 71 may be a soft cloth or a silk fabric.

The magnet assembly 20 is provided with a wiping member 73 on the surface where the plurality of magnets are provided, and the wiping member 73 can be a wiping cloth or other device capable of wiping the surface of an object. When the magnet assembly 20 is rotated under the influence of a magnetic field, the wiper 73 of the magnet assembly 20 rotates with the magnet assembly 20 to wipe the surface of the object.

Referring to fig. 7 and 8, in practical application of the preferred embodiment, more than one handle 75 can be disposed on the outer surface of the first housing 40, a hanging member 77 can be disposed on the outer surface of the second housing 50, the more than one handle 75 can be held by a cleaner, and a rope 78 can be tied to the hanging member 77. A cleaner can hold the first casing 40 by hand, stand on the inner side of the window glass 79, press the magnetic energy driving unit 10 against the inner surface of the window glass 79, and drop the second casing 50 to the outer side of the window glass 79 by the rope 78, so that the two ring-shaped

magnets

45 and 55 of the first casing 40 and the second casing 50 attract each other, and the second casing 50 is attached to the outer side of the window glass 79. When the magnetic energy driving assembly 10 is powered on, the magnetic field generated by the magnetic energy driving assembly 10 drives the magnet assembly 20 to rotate, and the wiper 73 rotates along with the magnet assembly 20 to clean the outside of the glass 79. Therefore, as long as a cleaning person holds the first cover 40 and moves the first cover 40, the second cover 50 can move to clean the outer side of the glass 79 along with the first cover 40, and the cleaning person does not need to move to the outer wall of the building and descend to the outer side of the glass 79 of the window to clean the glass 79, thereby reducing the complexity and danger of the work. Meanwhile, the rope 78 can be hung on the top floor or the outer wall of the building, and when the second housing 50 falls carelessly due to environmental factors such as wind, the rope 78 still hangs on the second housing, and the rope cannot fall to the ground directly, so that pedestrians or vehicles are prevented from being smashed.

Claims

1. A split brushless motor comprising:

a first cover shell, the center of which is concavely provided with a bearing groove, the center of the bearing groove is provided with a first rotating shaft through hole, and a bearing is arranged in the bearing groove;

a plurality of coils for generating a magnetic field when energized;

2. The split brushless motor of claim 1, wherein the magnetic energy driving assembly further comprises:

a coil panel, wherein a plurality of coil slots are formed on one surface of the coil panel to accommodate the plurality of coils, and a tabling hole is arranged in the center of the coil panel in a penetrating way for the rotating shaft to pass through;

and the at least one fixed disk is formed with a plurality of screw holes and is fixedly locked on the coil disk through the screw holes and the screws so as to clamp the coils between the coil disk and the fixed disk.

3. The split brushless motor according to claim 1 or 2, the magnet assembly further comprising:

a magnet disc, wherein a plurality of magnet slots are formed on one surface of the magnet disc, and a second rotating shaft through hole is formed in the center of the magnet disc for the rotating shaft to penetrate through; each magnet is arranged in a magnet groove, and the shape of the insertion part corresponds to the through hole of the second rotating shaft.

4. The split brushless motor of claim 1, the second rotating shaft through hole having a cut surface.

5. The separated brushless motor of claim 3, wherein a fixing ring is disposed between the magnet assembly and the magnetic energy driving assembly, and a fitting portion is integrally formed on one surface of the fixing ring and inserted into the fitting hole.

6. A split brushless motor comprising:

a magnetic energy driving set, comprising:

a plurality of coils for generating a magnetic field when energized;

a first cover case for covering the magnetic energy driving set;

7. The brushless split motor as claimed in claim 6, wherein the magnetic energy driving assembly further comprises:

a coil panel, wherein a plurality of coil slots are formed on one surface of the coil panel to accommodate the plurality of coils;

the fixing disc is provided with a plurality of screw holes and is fixedly locked on the coil disc through the screw holes and screws so as to clamp the coils between the coil disc and the fixing disc;

the magnet group further comprises a magnet disc, a plurality of magnet slots are formed on one surface of the magnet disc, and a second rotating shaft through hole is formed in the center of the magnet disc; each magnet is arranged in a magnet groove.

8. The split brushless motor of claim 7, each ring magnet being covered by a scratch-off.

9. The discrete brushless motor of claim 8, wherein the magnet assembly has a wiper on a surface thereof on which the plurality of magnets are disposed.