CN220711192U - Built-in integrated drive miniature multipolar hollow cup brushless motor - Google Patents
Built-in integrated drive miniature multipolar hollow cup brushless motor Download PDFInfo
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- CN220711192U CN220711192U CN202322431290.2U CN202322431290U CN220711192U CN 220711192 U CN220711192 U CN 220711192U CN 202322431290 U CN202322431290 U CN 202322431290U CN 220711192 U CN220711192 U CN 220711192U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 2
- 230000005405 multipole Effects 0.000 claims 5
- 125000006850 spacer group Chemical group 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a built-in integrated driving miniature multipolar hollow cup brushless motor, which comprises a casing, a rear end cover and a PCB bracket, wherein the PCB bracket is positioned between the casing and the rear end cover; the multi-pair pole rotor assembly comprises a rotating shaft, a magnetic yoke, a shaft sleeve, multi-pair pole magnetic steels and a rotor jacket, wherein the rotating shaft is arranged on the magnetic yoke and the shaft sleeve in a penetrating mode, the multi-pair pole magnetic steels are arranged at one ends of the shaft sleeve and the magnetic yoke in a sleeved mode, and the rotor jacket is arranged on the multi-pair pole magnetic steels in a sleeved mode. The utility model adopts the multi-pair magnetic steel to magnetize the two or more pairs of poles, so that the air-gap magnetic field of the motor is more uniform, which is equivalent to uniformly distributing the concentrated magnetic field intensity of one pair of poles, so that the magnetic field of the magnet yoke (slotless iron core) part is not excessively concentrated, the problems of eddy current loss, heating, motor clamping and the like of the motor are effectively reduced, and the dispersed magnetic field distribution can provide more stable output torque for the motor.
Description
Technical Field
The utility model relates to a hollow cup motor, in particular to a built-in integrated driving miniature multipolar hollow cup brushless motor.
Background
The conventional steering engine on the market uses a pair of external drive hollow cup motors, the motor outside needs the matched driver to normally work, the operation is inconvenient, the steering engine cannot be flexibly used, and the motor performance can be influenced due to the fact that the magnetic field strength of the magnetic steel of the pair of pole motors is too concentrated, and the following disadvantages are listed for the motor with the structure:
1. the external driver has large volume, needs to be matched with a motor for use, and is inconvenient to operate.
2. The magnetic field intensity of the pair of pole magnetic steels is too concentrated, so that the saturation of the magnetic field in the motor is easily caused, and the motor is blocked.
3. The torque ripple is large.
4. The starting torque is small.
5. The motor is easy to generate heat and the temperature rise is fast.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a built-in integrated driving miniature multipolar hollow cup brushless motor.
The aim of the utility model is achieved by the following technical scheme: the built-in integrated driving miniature multipolar hollow cup brushless motor comprises a shell, a rear end cover and a PCB bracket, wherein the PCB bracket is positioned between the shell and the rear end cover, an extending hole is formed in one side of the rear end cover, a PCB board is arranged on the PCB bracket, one end of the PCB board extends out of the extending hole, and a plurality of pairs of pole rotor assemblies are arranged in a cavity of the shell;
the multi-pair pole rotor assembly comprises a rotating shaft, a magnetic yoke, a shaft sleeve, multi-pair pole magnetic steels and a rotor jacket, wherein the rotating shaft is arranged on the magnetic yoke and the shaft sleeve in a penetrating mode, the multi-pair pole magnetic steels are arranged at one ends of the shaft sleeve and the magnetic yoke in a sleeving mode, and the rotor jacket is arranged on the multi-pair pole magnetic steels in a sleeving mode. The shaft sleeve is quadrilateral in shape and convenient to process, the precision is controllable, a rotor outer sleeve is sleeved outside the multi-pair pole magnetic steel to prevent the multi-pair pole magnetic steel from falling off from the shaft sleeve, the matching degree of the multi-pair pole magnetic steel and the rotating shaft is good, the consistency of the rotor is guaranteed, the balance effect is better, and the integral vibration of the motor is smaller. The surface of the rotating shaft is knurled, so that friction force matched with the shaft sleeve is increased, and the shaft can be prevented from falling off when the rotor runs at a high speed.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, the cross section of the magnetic yoke is T-shaped, and one ends of the magnetic steels of the multiple pairs of poles are propped against the magnetic yoke. The magnetic yoke can seal the magnetic field of the magnetic steel, so that the leakage of the electromagnetic field is avoided.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, the middle part of the rear end cover is provided with a bearing, the middle part of the front end of the shell is provided with a T-shaped bearing, one end of the rotating shaft is connected to the bearing, and the other end of the rotating shaft is connected to the T-shaped bearing. The T-shaped bearing is riveted after being pressed into the shell, so that the falling force of the bearing and the shell is increased, and the bearing is prevented from falling off when the rotor runs at a high speed.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, a damping gasket is arranged between the magnetic yoke and the T-shaped bearing.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, a stator assembly is further arranged in the cavity of the casing, and the plurality of pairs of pole rotor assemblies are arranged in the stator assembly in a penetrating way.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, the stator assembly comprises a wire cup with a multilayer winding structure and a punching sheet, wherein the punching sheet is positioned between the wire cup and the inner side wall of the shell, and an insulating gasket is arranged between one end of the wire cup and the bottom of the cavity of the shell. The middle of the wire cup is provided with a waist slot hole, so that the wire winding machine is convenient to demould; the external shape is arc, has advantages such as concatenation effectual, save motor inner space.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, a plurality of positioning grooves are formed in the PCB at intervals, positioning protrusions are arranged at positions, corresponding to the positioning grooves, of the PCB support, and the positioning protrusions and the positioning grooves are arranged in a triangular shape.
As an improvement of the built-in integrated drive miniature multipolar hollow cup brushless motor, an integrated control circuit and a Hall sensor are arranged in the PCB, three-phase Hall of the PCB is distributed at 120 degrees, and the PCB can directly drive the motor to operate after being input with an external power supply. The three-phase hall of PCB board is 120 degrees and distributes and detect rotor position more even accuracy, and after the motor performance test was accomplished, the rear end cover carries out laser spot welding with the casing junction, can increase junction force that drops, and the structure is more firm.
As an improvement of the built-in integrated driving miniature multipolar hollow cup brushless motor, the surface of the rear end cover is provided with a plurality of kidney-shaped grooves, the inner side surface of the rear end cover is provided with a mounting groove, and one end of the PCB board extends into the mounting groove. The kidney-shaped groove is convenient for the motor performance debugging.
The utility model has the beneficial effects that: the utility model adopts the multi-pair magnetic steel to magnetize the two or more pairs of poles, so that the air-gap magnetic field of the motor is more uniform, which is equivalent to uniformly distributing the concentrated magnetic field intensity of one pair of poles, so that the magnetic field of the magnet yoke (slotless iron core) part is not excessively concentrated, the problems of eddy current loss, heating, motor clamping and the like of the motor are effectively reduced, and the dispersed magnetic field distribution can provide more stable output torque for the motor. The magnetic steel sleeve in the multi-pair pole rotor can be precisely machined, the matching degree with the multi-pair pole magnetic steel and the shaft is good, and the balance of the multi-pair pole rotor is more stable. The rotor sleeve is sleeved outside the multi-pair pole magnetic steel to prevent the multi-pair pole magnetic steel from falling off from the shaft sleeve, the multi-pair pole magnetic steel and the rotating shaft of the structure are good in matching degree, the consistency of the rotor is guaranteed, the balance effect is better, and the overall vibration of the motor is smaller.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is a schematic illustration of a multi-pair pole rotor assembly of the present utility model;
the reference numerals are: 1. the rotor comprises a shell, 2, a rear end cover, 3, a PCB bracket, 4, an extending hole, 5, a PCB board, 6, a plurality of pairs of pole rotor components, 7, a bearing, 8, a T-shaped bearing, 9, a shock absorption gasket, 10, a stator component, 11, an insulating gasket, 61, a rotating shaft, 62, a magnetic yoke, 63, a shaft sleeve, 64, a plurality of pairs of pole magnetic steels, 65, a rotor jacket, 101, a wire cup, 102 and a punching sheet.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the embodiments of the present utility model, all directional indicators (such as up, down, left, right, front, and rear … …) are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present utility model.
As shown in fig. 1 and 2, a built-in integrated driving miniature multipolar hollow cup brushless motor comprises a casing 1, a rear end cover 2 and a PCB support 3, wherein the PCB support 3 is positioned between the casing 1 and the rear end cover 2, an extension hole 4 is arranged on one side of the rear end cover 2, a PCB board 5 is arranged on the PCB support 3, one end of the PCB board 5 extends out of the extension hole 4, and a plurality of pairs of pole rotor assemblies 6 are arranged in a cavity of the casing 1;
the multi-pair pole rotor assembly 6 comprises a rotating shaft 61, a magnetic yoke 62, a shaft sleeve 63, a plurality of pairs of pole magnetic steels 64 and a rotor jacket 65, wherein the rotating shaft 61 is arranged on the magnetic yoke 62 and the shaft sleeve 63 in a penetrating manner, the plurality of pairs of pole magnetic steels 64 are arranged at one ends of the shaft sleeve 63 and the magnetic yoke 62 in a sleeving manner, and the rotor jacket 65 is arranged on the plurality of pairs of pole magnetic steels 64 in a sleeving manner. The shape of the shaft sleeve 63 is quadrilateral, the processing is convenient, the precision is controllable, a rotor jacket 65 is sleeved outside the multi-pair pole magnetic steel 64 to prevent the multi-pair pole magnetic steel 64 from falling off the shaft sleeve 63, the matching degree of the multi-pair pole magnetic steel 64 and the rotating shaft 61 is good, the consistency of the rotor is ensured, the balance effect is better, and the integral vibration of the motor is smaller. The surface of the rotating shaft is knurled, so that friction force matched with the shaft sleeve is increased, and the shaft can be prevented from falling off when the rotor runs at a high speed.
Preferably, the cross section of the yoke 62 is T-shaped, and one end of the pairs of pole magnets 64 is abutted against the yoke 62. The yoke 62 can close the magnetic steel field to avoid leakage of the electromagnetic field.
Preferably, the middle part of the rear end cover 2 is provided with a bearing 7, the middle part of the front end of the casing 1 is provided with a T-shaped bearing 8, one end of the rotating shaft 61 is connected to the bearing 7, and the other end is connected to the T-shaped bearing 8. The T-shaped bearing 8 is riveted after being pressed into the shell 1, so that the falling force of the T-shaped bearing 8 and the shell 1 is increased, and the bearing is prevented from falling off when the rotor runs at a high speed.
Preferably, a damping washer 9 is provided between the yoke 62 and the T-shaped bearing 8.
Preferably, a stator assembly 10 is further disposed in the cavity of the casing 1, and a plurality of pairs of pole rotor assemblies 6 are disposed through the stator assembly 10.
Preferably, the stator assembly 10 comprises a wire cup 101 with a multi-layer winding structure and a punching sheet 102, wherein the punching sheet 102 is positioned between the wire cup 101 and the inner side wall of the casing 1, and an insulating gasket 11 is arranged between one end of the wire cup 101 and the bottom of the cavity of the casing 1. The middle of the wire cup 101 is provided with a waist slot hole, so that the wire winding machine is convenient to demould; the external shape is arc, has advantages such as concatenation effectual, save motor inner space.
Preferably, a plurality of positioning grooves are formed in the PCB 5 at intervals, positioning protrusions are arranged at positions of the PCB support 3 corresponding to the positioning grooves, and the positioning protrusions and the positioning grooves are triangular.
Preferably, integrated control circuit and hall sensor have been arranged in the PCB board 5, and the three-phase hall of PCB board 5 is 120 degrees and distributes, and the operation of PCB board input external power source can direct drive motor. The three-phase hall of PCB board 5 is 120 degrees and distributes and detect rotor position more even accuracy, and after the motor performance test was accomplished, the rear end cover carries out laser spot welding with the casing junction, can increase junction force that drops, and the structure is more firm.
Preferably, the surface of the rear end cover 2 is provided with a plurality of kidney-shaped grooves, the inner side surface of the rear end cover 2 is provided with a mounting groove, and one end of the PCB 5 extends into the mounting groove. The kidney-shaped groove is convenient for the motor performance debugging.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and structure of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The built-in integrated driving miniature multipolar hollow cup brushless motor is characterized by comprising a shell, a rear end cover and a PCB bracket, wherein the PCB bracket is positioned between the shell and the rear end cover, an extending hole is formed in one side of the rear end cover, a PCB board is arranged on the PCB bracket, one end of the PCB board extends out of the extending hole, and a plurality of pairs of pole rotor assemblies are arranged in a cavity of the shell;
the multi-pair pole rotor assembly comprises a rotating shaft, a magnetic yoke, a shaft sleeve, multi-pair pole magnetic steels and a rotor jacket, wherein the rotating shaft is arranged on the magnetic yoke and the shaft sleeve in a penetrating mode, the multi-pair pole magnetic steels are arranged at one ends of the shaft sleeve and the magnetic yoke in a sleeving mode, and the rotor jacket is arranged on the multi-pair pole magnetic steels in a sleeving mode.
2. The built-in integrally driven micro multipole coreless brushless motor of claim 1, wherein the cross section of the yoke is T-shaped, and one end of the plurality of pairs of pole magnets is abutted against the yoke.
3. The built-in integrated driving miniature multipolar hollow cup brushless motor according to claim 1, wherein a bearing is arranged in the middle of the rear end cover, a T-shaped bearing is arranged in the middle of the front end of the casing, one end of the rotating shaft is connected to the bearing, and the other end of the rotating shaft is connected to the T-shaped bearing.
4. The built-in integrally driven micro multipole coreless brushless motor of claim 3, wherein a shock pad is provided between the yoke and the T-shaped bearing.
5. The built-in integrally driven miniature multi-pole hollow cup brushless motor of claim 1, wherein a stator assembly is further provided in the cavity of the housing, the plurality of pairs of pole rotor assemblies being disposed through the stator assembly.
6. The built-in integrally driven micro multipolar coreless brushless motor of claim 5, wherein the stator assembly comprises a wire cup and a punching sheet of a multi-layer wire winding structure, the punching sheet is positioned between the wire cup and the inner side wall of the casing, and an insulating spacer is arranged between one end of the wire cup and the bottom of the cavity of the casing.
7. The built-in integrated driving miniature multipolar hollow cup brushless motor of claim 1, wherein a plurality of positioning grooves are arranged on the PCB at intervals, positioning protrusions are arranged at positions of the PCB support corresponding to each positioning groove, and the positioning protrusions and the positioning grooves are arranged in a triangular shape.
8. The built-in integrated driving miniature multipole coreless brushless motor of claim 1, wherein the integrated control circuit and the hall sensor are arranged in the PCB, three-phase hall of the PCB is 120 degrees distributed, and the PCB can directly drive the motor to operate by inputting an external power source.
9. The built-in integrated driving miniature multi-pole hollow cup brushless motor of claim 1, wherein the surface of the rear end cover is provided with a plurality of kidney-shaped grooves, the inner side surface of the rear end cover is provided with a mounting groove, and one end of the PCB board extends into the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431290.2U CN220711192U (en) | 2023-09-07 | 2023-09-07 | Built-in integrated drive miniature multipolar hollow cup brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322431290.2U CN220711192U (en) | 2023-09-07 | 2023-09-07 | Built-in integrated drive miniature multipolar hollow cup brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220711192U true CN220711192U (en) | 2024-04-02 |
Family
ID=90438552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322431290.2U Active CN220711192U (en) | 2023-09-07 | 2023-09-07 | Built-in integrated drive miniature multipolar hollow cup brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220711192U (en) |
-
2023
- 2023-09-07 CN CN202322431290.2U patent/CN220711192U/en active Active
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