CN218498907U

CN218498907U - External rotor magnetic gear motor

Info

Publication number: CN218498907U
Application number: CN202222282684.1U
Authority: CN
Inventors: 陶骏; 郁薇英
Original assignee: Shanghai Futian Electric Technology Co ltd
Current assignee: Shanghai Futian Electric Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-02-17
Anticipated expiration: 2032-08-29

Abstract

The utility model relates to an external rotor magnetism gear motor, include the motor flange, fix stator mounting on the motor flange, fix stator module, setting on the stator mounting are in outside rotor subassembly, swing joint of stator module are in inside pivot and the rotor support of stator module, rotor support one end is connected the rotor subassembly, the other end is connected the pivot, a serial communication port, the rotor support include with rotor module fixed connection's main part, center with pivot fixed connection's depressed part and transition portion, the transition portion is continuous arcuation, transition portion one end is connected the main part, the other end is connected the depressed part, the radius of depressed part is 45-50mm, and the degree of depth is 7-9mm, the utility model discloses the rotor support designs into bow-shaped structure, lightens under the prerequisite of proof strength, and can offset the pulling force that the rotor support bore in the operation process, improves bulk strength.

Description

External rotor magnetic gear motor

Technical Field

The utility model relates to a magnetism gear motor especially relates to an external rotor magnetism gear motor.

Background

The magnetic gear has the advantages of low noise, no abrasion, high efficiency and high reliability, can replace a mechanical gear structure, and has the advantages of wide application of high torque density of the magnetic gear motor to low-speed direct drive use occasions.

Present existing magnetic gear structure has a lot of structures to rotor structure to divide into axial magnetic flux, radial magnetic flux structure, places the position according to the magnet steel, divide into inner rotor, outer rotor structure, above scheme, or the structure is complicated, for example contains special accent magnetic ring, perhaps birotor structure, is difficult for installation and batch production, or whole mechanical strength is not enough, and the service life is few.

Therefore, an outer rotor magnetic gear motor with simple structure, easy installation and high overall mechanical strength is needed.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides an external rotor magnetic gear motor.

The utility model discloses technical scheme as follows:

the utility model provides an external rotor magnetic gear motor, includes the motor flange, fixes stator mounting on the motor flange, fixes stator module on the stator mounting, sets up the outside rotor subassembly of stator module, swing joint in inside pivot and the rotor spider of stator module, rotor spider one end is connected the rotor subassembly, the other end is connected the pivot, its characterized in that, the rotor spider include with rotor module fixed connection's main part, center with pivot fixed connection's depressed part and transition portion, the transition portion is continuous arcuation, transition portion one end is connected the main part, the other end is connected the depressed part, the radius of depressed part is 45-50mm, and the degree of depth is 7-9mm.

As a further improvement of the invention, the radius of the concave part is 47mm, and the depth is 8mm.

As a further improvement of the invention, the transition portion comprises a first curved portion connected with the recess portion and a second curved portion connected with the main body portion, the first curved portion has a radius of 25mm and an angle of 25 °, and the second curved portion has a radius of 58mm and an angle of 25 °.

As a further improvement of the invention, the stator fixing piece comprises a hollow cylinder with a stop block at one end and a first pressure ring sleeved on the hollow cylinder in a penetrating manner, and a groove for fixing the stator assembly is formed between the first pressure ring and the stop block.

As a further improvement of the invention, the stator assembly comprises a stator core and a stator winding, the stator core is formed by stacking silicon steel sheets, the stator core is provided with a plurality of open slots, and the stator winding is wound around the stator core through the open slots.

As a further improvement of the present invention, 2 bearings are disposed between the stator assembly and the rotating shaft, an outer ring of the bearing is fixedly connected to the stator fixing member, and an inner ring of the bearing is fixedly connected to the rotating shaft.

As a further improvement of the invention, a first bearing spacer sleeve and a second bearing spacer sleeve are arranged among 2 bearings, the first bearing spacer sleeve is arranged on an outer ring of the bearing, the second bearing spacer sleeve is arranged on an inner ring of the bearing, and a locking nut for fixing the bearing is arranged on the rotating shaft.

As a further improvement of the invention, the rotor assembly comprises a steel sleeve fixedly connected with the main body part, a rotor core pressed in the steel sleeve, a permanent magnet adhered on the rotor core and second compression rings arranged on two sides of the rotor core.

As a further improvement of the invention, the permanent magnet is a plurality of magnetic steels, and magnetic steel plugs are arranged among the magnetic steels.

As a further improvement of the invention, an encoder is arranged on the rotating shaft close to the motor flange.

According to the above scheme the utility model discloses, the beneficial effects of the utility model reside in that:

the utility model discloses simple structure easily installs and dismantles, makes things convenient for mass production, and the spider designs into bow-shaped structure, can reduce weight under the prerequisite of proof strength, and can offset the pulling force that the spider bore in the operation process, improves bulk strength.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a structural sectional view of the present invention;

fig. 3 is a side sectional view of the present invention;

fig. 4 is a schematic structural view of the stator fixing member of the present invention.

In the figure: 1. a motor flange; 2. a stator fixing member; 21. a first pressure ring; 22. a hollow cylinder; 23. a stopper; 3. a stator assembly; 31. a stator core; 311. an open slot; 4. a rotor assembly; 41. steel jacket; 42. a rotor core; 43. a permanent magnet; 431. magnetic steel; 432. a magnetic steel plug; 44. a second pressure ring; 5. a rotating shaft; 51. locking the nut; 6. a rotor support; 61. a main body portion; 62. a recessed portion; 63. a transition section; 631. a first curved portion; 632. a second curved portion; 7. a bearing; 8. a first bearing spacer; 9. a second bearing spacer; 10. an encoder.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-3, the utility model provides an outer rotor magnetic gear motor adopts coaxial annular structure, by motor flange 1, stator mounting 2, stator module 3, rotor subassembly 4, pivot 5, spider 6, bearing 7, first bearing spacer 8, second bearing spacer 9 and encoder 10 constitute, and the motor adopts the outer rotor structure, and based on the T of motor is directly proportional to D ^2*L (the effective air gap size of D, L iron core length), can effectively improve the energy density of motor like this.

The rotating shaft 5, the bearing 7, the stator core 31, the permanent magnet 43, the rotor core 42 and the steel sleeve 41 are coaxially arranged from inside to outside in sequence, and the electric layout of the motor adopts a single-layer air gap structure, so that the complexity of the motor is reduced; in addition, the permanent magnet 43 can adopt a plurality of magnetic steels 431, and a magnetic steel plug 432 is arranged in the gap of the magnetic steels 431; stator module 3 is fixed and is static setting with bearing 7 outer lane with stator mounting 2, motor flange 1.

The permanent magnet 43 is adhered to the rotor core 42 formed by stacking the silicon steel sheets by adopting epoxy glue, so that the permanent magnet 43 is prevented from falling off and being damaged, meanwhile, the rotor core 42 formed by stacking the silicon steel sheets is pressed into the steel bushing 41, the second pressing rings 44 are arranged on two sides of the rotor core 42, the integral mechanical strength is improved, the rotor support 6 is respectively fixedly connected with the rotating shaft 5 and the steel bushing 41 through screw locking, and therefore, the rotating shaft 5, the rotor assembly 4 and the rotor support 6 are integrally fixed and are dynamically arranged by being connected with the inner ring of the bearing 7.

Because the motor can produce centrifugal force in the rotation process, convert to the oblique outside pulling force of rotor support 6, the motor can lead to rotor support 6 to receive the damage after the live time has been long, consequently be equipped with transition portion 63 and depressed part 62 in rotor support 6's central point, first curved portion 631 and the second curved portion 632 through transition portion 63 design rotor support 6 wholly into bow-shaped structure, the radius of first curved portion 631 is 25cm, the angle is 25, the radius of second curved portion 632 is 58cm, the angle is 25, can alleviate weight under the prerequisite of assurance intensity, and can offset the pulling force that rotor support 6 bore in the operation process, improve overall strength.

The stator core 31 of the motor is formed by laminating silicon steel sheets, a plurality of open slots 311 are formed in the edge position, a stator winding can be wound around the stator core 31 through the open slots 311, the open slot structure of the stator core 31 can cause breath magnetic conductance to generate periodic change in the radial circumferential direction, and the breath magnetic conductance and magnetomotive force generated by the permanent magnet 43 adhered to the rotor core 42 interact to generate a harmonic magnetic field, so that the effects of speed reduction and torque increase are achieved.

When the two bearings 7 are installed, one bearing 7 is firstly sleeved on the rotating shaft 5 in a penetrating way, then the first bearing spacer 8 and the second bearing spacer 9 are sleeved on the rotating shaft 5 in a penetrating way, the other bearing 7 is sleeved on the rotating shaft 5 in a penetrating way, the first bearing spacer 8 is fixed on the outer rings of the two bearings 7, and the second bearing spacer 9 is fixed on the inner rings of the two bearings 7 and can be used for positioning the two bearings 7 and limiting the distance between the two bearings 7; in addition, a locking nut 51 is further arranged on the rotating shaft 5, the locking nut 51 is in threaded connection with the rotating shaft 5 and used for fixing the two bearings 7, and all the parts are fixed through penetrating sleeves and nuts, so that the mounting and dismounting are easy.

The rotary shaft 5 is provided with an encoder 10 near the motor flange 1 for feedback of the position and speed of the rotor core 42.

Referring to fig. 3 and 4, the stator fixing member 2 includes a hollow cylinder 22 having a stopper 23 at one end and a first press ring 21 sleeved on the hollow cylinder 22, when the stator assembly is installed, the hollow cylinder 22 is inserted into the stator core 31 through the end without the stopper 23, and then the first press ring 21 is sleeved on the hollow cylinder 22, and then the stator assembly 3 is fixed between the stopper 23 and the first press ring 21 by screws, so that the stator assembly 3 and the stator fixing member 2 are connected into a whole and then fixedly installed on the motor flange 1, and the components are fixed by screws, thereby being easy to install and disassemble.

When the motor runs, the motor flange 1, the stator fixing piece 2 and the stator assembly 3 are fixedly connected and are in a static state, the stator winding is electrified to generate a magnetic field, the rotor assembly 4 is driven to rotate, and therefore the rotor assembly 4, the rotating shaft 5 and the rotor support 6 are fixedly connected and are in a rotating state.

In conclusion, the rotor support 6 is designed into an arched structure, so that the tensile force borne by the rotor support 6 in the operation process can be counteracted, and the overall mechanical strength of the motor is improved; the permanent magnet 43 is adhered to the rotor core 42 by epoxy glue, so that the permanent magnet 43 is prevented from falling off and being damaged; the rotor core 42 is pressed into the steel sleeve 41, and the second pressure ring 44 is arranged on the outer side of the rotor core 42, so that the overall strength can be improved, and the service life of the motor can be prolonged; the stator core 31 is provided with a plurality of open slots 311 at the edge part, and the air gap magnetic conductance caused by the open slot structure interacts with the magnetomotive force generated by the permanent magnet 43 to generate a harmonic magnetic field, so that the effects of speed reduction and torque increase are realized; the encoder 10 can be used to feedback the position and speed of the rotor core 42. The utility model discloses simple structure, through wearing cover, screw thread fastening between each part, easily installation and dismantlement also make things convenient for batch production simultaneously.

It is to be emphasized that: the above is only a preferred embodiment of the present invention, and the present invention is not limited to any form, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The outer rotor magnetic gear motor comprises a motor flange (1), a stator fixing piece (2) fixed on the motor flange (1), a stator assembly (3) fixed on the stator fixing piece (2), a rotor assembly (4) arranged outside the stator assembly (3), a rotating shaft (5) movably connected inside the stator assembly (3) and a rotor support (6), wherein one end of the rotor support (6) is connected with the rotor assembly (4), and the other end of the rotor support is connected with the rotating shaft (5).

2. The external rotor magnetic gear motor of claim 1, wherein the recess (62) has a radius of 47mm and a depth of 8mm.

3. The external rotor magnetic gear motor of claim 2, wherein the transition portion (63) comprises a first curve (631) connected to the recess (62) and a second curve (632) connected to the main body portion (61), the first curve (631) having a radius of 25mm and an angle of 25 °, the second curve (632) having a radius of 58mm and an angle of 25 °.

4. The external rotor magnetic gear motor according to claim 1, wherein the stator holder (2) comprises a hollow cylinder (22) with a stop (23) at one end and a first press ring (21) sleeved on the hollow cylinder (22), and a groove for fixing the stator assembly (3) is formed between the first press ring (21) and the stop (23).

5. The external rotor magnetic gear motor according to claim 4, wherein the stator assembly (3) comprises a stator core (31) and a stator winding, the stator core (31) is formed by laminating silicon steel sheets, the stator core (31) is provided with a plurality of open slots (311), and the stator winding is wound around the stator core (31) through the open slots (311).

6. The external rotor magnetic gear motor according to claim 5, characterized in that 2 bearings (7) are provided between the stator assembly (3) and the rotating shaft (5), the outer ring of the bearing (7) is fixedly connected with the stator fixing member (2), and the inner ring of the bearing (7) is fixedly connected with the rotating shaft (5).

7. The external rotor magnetic gear motor according to claim 6, characterized in that a first bearing spacer (8) and a second bearing spacer (9) are arranged among 2 bearings (7), the first bearing spacer (8) is arranged at the outer ring of the bearing (7), the second bearing spacer (9) is arranged at the inner ring of the bearing (7), and a lock nut (51) for fixing the bearing (7) is arranged on the rotating shaft (5).

8. The external rotor magnetic gear motor according to claim 1, wherein the rotor assembly (4) comprises a steel sleeve (41) fixedly connected with the main body portion (61), a rotor core (42) pressed in the steel sleeve (41), permanent magnets (43) adhered to the rotor core (42), and second compression rings (44) arranged at both sides of the rotor core (42).

9. The external rotor magnetic gear motor of claim 8, wherein the permanent magnets (43) are a plurality of magnetic steels (431), and magnetic steel plugs (432) are disposed between the magnetic steels (431).

10. The external rotor magnetic gear motor according to claim 1, wherein the shaft (5) is provided with an encoder (10) near the motor flange (1).