CN214154205U - Hollow shaft hub motor - Google Patents
Hollow shaft hub motor Download PDFInfo
- Publication number
- CN214154205U CN214154205U CN202022791434.1U CN202022791434U CN214154205U CN 214154205 U CN214154205 U CN 214154205U CN 202022791434 U CN202022791434 U CN 202022791434U CN 214154205 U CN214154205 U CN 214154205U
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- end cover
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- left end
- hub
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Abstract
The utility model discloses a hollow shaft wheel hub motor, which relates to the technical field of driving motors and comprises a motor stator and a motor rotor assembly, wherein the motor stator comprises a stator winding, an outgoing line and a stator bracket, the motor rotor assembly comprises a wheel hub, a permanent magnet, a left end cover, a right end cover bearing and a left end cover bearing, and the motor stator is arranged in the motor rotor assembly; an accommodating space is formed in the hub, a left end cover is arranged on the inner wall of one side of the accommodating space, and a right end cover is arranged on the other side of the inner peripheral wall of the accommodating space; one end of the inner wall of the accommodating space is provided with a stator bracket. The inner wall of the hub is connected with the outer side of the permanent magnet, and the inner side of the permanent magnet is arranged opposite to the outer wall of the stator winding; the inner edge of the left end cover is fixedly connected with the left end cover bearing, the inner edge of the right end cover is fixedly connected with the right end cover bearing, and the inner wall of the other end of the stator support is provided with a first through hole. When the stator is used, the stator is exposed greatly, so that the stator is easy to install and fix, and the installation reliability is improved.
Description
Technical Field
The utility model relates to driving motor's technical field especially involves a hollow shaft in-wheel motor.
Background
The Brushless Direct Current Motor (BLDCM) overcomes the congenital defect of the brushed dc Motor, and replaces the mechanical commutator with the electronic commutator, so the BLDCM has the characteristics of good speed-adjusting performance of the dc Motor, and has the advantages of simple structure, no commutating spark, reliable operation, easy maintenance, etc. the BLDC Motor has simple structure, high power density, small volume, and has been widely used in the fields of electric vehicles, etc. in recent years.
At present, the motor adopts an outer rotor structure, a rotor is directly combined with a hub, the motor is fixed only by extending shafts at two ends, other parts are rotor parts of the motor, and a stator is exposed and only has one small shaft, so that the motor has some problems:
firstly, if other structures (such as a vehicle damping structure and the like) need to be added, the structures can only be added on two vehicle measuring frames of the motor, so that the width of the product is inevitably increased, and the integral attractiveness of the product is influenced.
Secondly, the stator part of the motor is exposed a little and is not easy to fix, the stator part is fixed only by extending shafts at two sides, a lead wire needs to be punched in the middle of the shaft, and the strength of the shaft is influenced.
And thirdly, the outer diameter of the hub motor is large, and the middle part is only used as a supporting structure of the motor, so that the space is wasted.
Fourthly, the stator is exposed little and cannot be made into other structures.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hollow shaft in-wheel motor for solve above-mentioned technical problem.
The utility model adopts the technical scheme as follows:
a hollow shaft hub motor comprises a motor stator and a motor rotor assembly, wherein the motor stator comprises a stator winding, an outgoing line and a stator support, the motor rotor assembly comprises a hub, a permanent magnet, a left end cover, a right end cover bearing and a left end cover bearing, and the motor stator is arranged in the motor rotor assembly;
an accommodating space is formed in the hub, the left end cover is arranged on the inner wall of one side of the accommodating space, and the right end cover is arranged on the other side of the inner peripheral wall of the accommodating space; the stator bracket is arranged at one end of the inner wall of the accommodating space; the inner wall of the hub is connected with the outer side of the permanent magnet, the inner side of the permanent magnet is arranged opposite to the outer wall of the stator winding, the inner wall of the stator winding is arranged on the outer edge of the stator support, and one side of the stator winding is connected with one end of the outgoing line; the other end of the outgoing line penetrates through the stator support to be led out; one end of the right end cover bearing is rotatably arranged on one side of the outer edge of the stator support, and the left end cover bearing is rotatably arranged on the other side of the outer edge of the stator support; the inner edge of the left end cover is fixedly connected with the left end cover bearing, the inner edge of the right end cover is fixedly connected with the right end cover bearing, and a first through hole is formed in the inner wall of the other end of the stator support.
As a further preferred option, the inner wall of the stator support is provided with a plurality of fixing blocks, the fixing blocks are located in the first through holes, and the fixing blocks are arranged in a circumferential array by taking the axis of the motor rotor assembly as a circle center.
Preferably, the outer wall of the left end cover and the outer wall of the right end cover are respectively provided with a plurality of mounting holes, and the inner edge of the hub is detachably connected with the outer wall of the left end cover and the outer wall of the right end cover through the mounting holes.
Preferably, the hub further comprises fastening screws, each fastening screw is mounted in one of the mounting holes, and the inner edge of the hub is detachably connected with the outer wall of the left end cover and the outer wall of the right end cover through the fastening screws.
Preferably, the outer edge of the stator bracket is provided with a limiting part, and one side of the other end of the stator winding is abutted against the limiting part.
As a further preference, be equipped with in the stator support with first arch, the inner wall of left end lid is equipped with a second arch, the inner wall of right-hand member lid is equipped with the third arch, the second arch with the stator support and form first chamber that holds between the first arch, the third arch with the stator support and form the second between the first arch and hold the chamber, left end lid bearing installation first hold the intracavity, right end lid bearing installation the second holds the intracavity.
Further preferably, the first bump is provided with a wire hole, and the other end of the lead wire is led out through the wire hole.
Preferably, each of the fixing blocks has a second through hole therein, and each of the second through holes is connected to the first through hole.
As a further preferred option, the accommodating space is communicated with the first accommodating cavity, and the accommodating space is communicated with the second accommodating cavity.
Preferably, the hub is of an annular structure, and a third through hole is formed in one side of the outer wall of the hub.
The technical scheme has the following advantages or beneficial effects:
(1) in the utility model, the motor not only has simple structure and more flexible layout, but also avoids the differential problem of the driving wheel when steering without a complex mechanical transmission system; meanwhile, the installation reliability of the motor is improved, and the space in the middle of the hollow shaft can be used as other structures, so that the space is saved.
(2) The utility model discloses in, hollow shaft in-wheel motor stator exposes partly big, and easily the installation is fixed, has improved the installation reliability.
(3) The utility model discloses in, hollow shaft in-wheel motor has yielded the motor intermediate space, is favorable to installing other structures, is convenient for design the unique outward appearance of product simultaneously.
Drawings
Fig. 1 is a front view of the hollow shaft hub motor of the present invention;
fig. 2 is a side view of the hollow shaft in-wheel motor of the present invention.
In the figure: 1. a hub; 2. a permanent magnet; 3. a stator winding; 4. a right end cap; 5. a right end cap bearing; 6. a stator support; 7. an outgoing line; 8. a left end cap; 9. a left end cap bearing; 10. fastening screws; 11. the device comprises an accommodating space, 12, a fixing block, 13, a first through hole, 14 and a wire guide hole; 15. the third through hole 16, the first bulge 17, the second bulge 18, the limiting part 19, the first accommodating cavity 20, the second accommodating cavity 21 and the second through hole; 22. and a third protrusion.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", 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 in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1-2, a hollow shaft hub 1 motor comprises a motor stator and a motor rotor assembly, wherein the motor stator comprises a stator winding 3, an outgoing line 7 and a stator bracket 6, the motor rotor assembly comprises a hub 1, a permanent magnet 2, a left end cover 8, a right end cover 4, a right end cover bearing 5 and a left end cover bearing 9, and the motor stator is arranged in the motor rotor assembly;
an accommodating space 11 is formed in the hub 1, a left end cover 8 is arranged on the inner wall of one side of the accommodating space 11, and a right end cover 4 is arranged on the other side of the inner peripheral wall of the accommodating space 11; one end of the inner wall of the accommodating space 11 is provided with a stator bracket 6; the inner wall of the hub 1 is connected with the outer side of the permanent magnet 2, the inner side of the permanent magnet 2 is arranged opposite to the outer wall of the stator winding 3, the inner wall of the stator winding 3 is arranged at the outer edge of the stator bracket 6, and one side of the stator winding 3 is connected with one end of the outgoing line 7; the other end of the outgoing line 7 is led out through the stator bracket 6; one end of the right end cover bearing 5 is rotatably arranged at one side of the outer edge of the stator bracket 6, and the left end cover bearing 9 is rotatably arranged at the other side of the outer edge of the stator bracket 6; the inner edge of the left end cover 8 is fixedly connected with the left end cover bearing 9, the inner edge of the right end cover 4 is fixedly connected with the right end cover bearing 5, and the inner wall of the other end of the stator support 6 is provided with a first through hole 13.
The motor in the embodiment has the advantages of simple structure, more flexible layout, no need of a complex mechanical transmission system and capability of avoiding the differential problem of the driving wheels during steering; meanwhile, the installation reliability of the motor is improved, and the space in the middle of the hollow shaft can be used as other structures, so that the space is saved.
The hollow shaft hub 1 motor stator is large in exposed part, easy to install and fix and capable of improving installation reliability. Meanwhile, the motor of the hollow shaft hub 1 gives up the middle space of the motor, thereby being beneficial to installing other structures and being convenient for designing the unique appearance of the product.
Secondly, the stator support 6 of the motor of the hollow shaft hub 1 not only serves as the stator support 6 of the motor, but also serves as the output shaft of the motor, the stator support 6 is generally processed by die-casting aluminum, and a through large through hole is arranged in the middle. The die-casting aluminum has the advantages of good product quality, strong strength and hardness, elongation, stable size and good interchangeability, and can be made for the casting with thin wall. Meanwhile, the die-casting aluminum is produced by a machine, so that the production efficiency is higher. In addition, the stator support 6 can also be made of other metal materials, different requirements of users on the strength, the mechanical property and the metal characteristic of the stator support 6 are met, and the application range of the stator support 6 is expanded, so that the application range of the hollow shaft hub 1 motor is expanded.
The wheel hub comprises a wheel hub 1, wherein an accommodating space 11 is formed in the wheel hub 1; the permanent magnet 2 is arranged along the inner edge of the hub 1; the stator support 6 is of an annular structure, the stator support 6 is arranged on the inner side of the permanent magnet, and a wire guide hole 14 is formed in the stator support 6 along the radial direction; the stator winding 3 is arranged on the outer edge of the stator support 6, and the stator winding 3 is arranged right opposite to the permanent magnet 2; one end of the motor lead is connected with the stator winding 3, and the other end of the motor lead is led out through the wire hole 14; the right end cover bearing 5, the said right end cover bearing 5 is mounted to one end of the outer fringe of the said stator support 6 rotatably; the left end cover bearing 9, the left end cover bearing 9 can be rotatably arranged at the other end of the outer edge of the stator bracket 6; the left end cover 8 is sleeved on the left end cover bearing 9, the inner edge of the left end cover 8 is fixedly connected with the left end cover bearing 9, and the outer edge of the left end cover 8 is fixedly connected with one end of the inner edge of the hub 1; the right end cover 4 is sleeved on the right end cover bearing 5, the inner edge of the right end cover 4 is fixedly connected with the right end cover bearing 5, and the outer edge of the right end cover 4 is fixedly connected with the other end of the inner edge of the hub 1.
Secondly, the section of the stator support 6 is I-shaped, the stator support 6 comprises an outer ring, an inner ring and a connecting plate positioned between the outer ring and the inner ring, the outer ring is connected with the inner wall of the stator winding 3, two sides of the inner wall of the outer ring are respectively connected with the left end cover bearing 9 and the right end cover bearing 5, and the outer wall of the outer ring is provided with a first through hole 13. Wherein, a first bulge 16 is arranged between the inner wall of the outer ring and one end of the connecting plate, and the stator bracket 6 not only is used as the stator bracket 6 of the motor, but also is used as the output shaft of the motor. The arrangement mode simplifies the structure of the motor and ensures the strength of the stator bracket 6.
Further, as a preferred embodiment, the inner wall of the stator support 6 is provided with a plurality of fixing blocks 12, the fixing blocks 12 are located in the first through holes 13, and the fixing blocks 12 are arranged in a circumferential array around the axis of the motor rotor assembly. The fixed block 12 is arranged to facilitate the installation and fixation of the hollow shaft hub 1 motor.
Further, as a preferred embodiment, the outer wall of the left end cover 8 and the outer wall of the right end cover 4 are respectively provided with a plurality of mounting holes, and the inner edge of the hub 1 is detachably connected with the outer wall of the left end cover 8 and an outer wall of the right end cover 4 through the mounting holes. Such connected mode makes to simplify the connection degree of difficulty between wheel hub 1 and left end housing 8 and the right-hand member lid 4, has improved the joint strength between wheel hub 1 and left end housing 8 and the right-hand member lid 4 simultaneously. Meanwhile, when a part of the hub 1, the left end cover 8 and the right end cover 4 is damaged, the hub can be disassembled and replaced, and the service life of the hollow shaft hub 1 is prolonged.
The hub 1, the left end cover 8 and the right end cover 4 can be connected in different connection modes such as screw connection, bolt connection, fastening screw 10 connection and the like; therefore, different requirements of the user on the connection strength, the connection mode and the installation difficulty between the hub 1 and the left end cover 8 and the right end cover 4 in the use process are met, and the application range of the motor is expanded.
Further, as a preferred embodiment, the hub further comprises fastening screws 10, each fastening screw 10 is respectively installed in one of the installation holes, and the inner edge of the hub 1 is detachably connected with the outer wall of the left end cover 8 and the outer wall of the right end cover 4 through the fastening screws 10.
Further, as a preferred embodiment, the outer edge of the stator support 6 is provided with a limiting portion 18, and one side of the other end of the stator winding 3 abuts against the limiting portion 18. Wherein, the limiting part 18 is annular, and the limiting part 18 plays a role in positioning.
Further, as a preferred embodiment, the stator support 6 is provided with a first protrusion 16, the inner wall of the left end cover 8 is provided with a second protrusion 17, the inner wall of the right end cover 4 is provided with a third protrusion 22, a first accommodating cavity 19 is formed between the second protrusion 17 and the stator support 6 as well as between the second protrusion 17 and the first protrusion 16, a second accommodating cavity 20 is formed between the third protrusion 22 and the stator support 6 as well as between the third protrusion 22 and the first protrusion 16, the left end cover bearing 9 is installed in the first accommodating cavity 19, and the right end cover bearing 5 is installed in the second accommodating cavity 20.
Further, as a preferred embodiment, the first bump 16 is provided with a wire hole 14, and the other end of the lead wire 7 is led out through the wire hole 14.
Further, as a preferred embodiment, each fixing block 12 is provided with a second through hole 21 therein, and each second through hole 21 is communicated with the first through hole 13.
Further, as a preferred embodiment, the accommodating space 11 is communicated with the first accommodating cavity 19, and the accommodating space 11 is communicated with the second accommodating cavity 20. The heat dissipation is facilitated when the hollow shaft hub 1 motor runs.
Further, as a preferred embodiment, the hub 1 is of a ring structure, and a third through hole 15 is formed on one side of the outer wall of the hub 1. The hub 1 is of an annular structure, the upper half part of the cross section of the hub 1 is Y-shaped, and the lower half part of the cross section of the hub 1 is rectangular.
In this embodiment, the stator winding 3 is press-fitted on the stator support 6, the upper end of the motor lead wire 7 is connected to the stator winding 3, and the lower end is led out through the wire hole 14 on the stator support 6. The stator winding 3, the stator support 6 and the outgoing line 7 form a motor stator. The permanent magnet 2 is pasted on the hub 1, and the right end cover 4 is fixed on the hub 1 by a fastening screw 10. And meanwhile, the left end cover 8 is fixed on the hub 1 by a fastening screw 10, and the hub 1, the permanent magnet 2, the right end cover 4 and the left end cover 8 jointly form the total part of the motor rotor. The right end cover 4 is supported at the right end of the stator support 6 by a bearing, and the left end cover 8 is supported at the left end of the stator support 6 by a bearing.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (10)
1. A hollow shaft hub motor is characterized by comprising a motor stator and a motor rotor assembly, wherein the motor stator comprises a stator winding (3), an outgoing line (7) and a stator support (6), the motor rotor assembly comprises a hub (1), a permanent magnet (2), a left end cover (8), a right end cover (4), a right end cover bearing (5) and a left end cover bearing (9), and the motor stator is installed in the motor rotor assembly;
an accommodating space (11) is formed in the hub, the left end cover (8) is arranged on the inner wall of one side of the accommodating space (11), and the right end cover (4) is arranged on the other side of the inner peripheral wall of the accommodating space (11); one end of the inner wall of the accommodating space (11) is provided with the stator bracket (6); the inner wall of the hub (1) is connected with the outer side of the permanent magnet (2), the inner side of the permanent magnet (2) is arranged opposite to the outer wall of the stator winding (3), the inner wall of the stator winding (3) is arranged at the outer edge of the stator support (6), and one side of the stator winding (3) is connected with one end of the outgoing line (7); the other end of the outgoing line (7) penetrates through the stator bracket (6) to be led out; one end of the right end cover bearing (5) is rotatably arranged on one side of the outer edge of the stator support (6), and the left end cover bearing (9) is rotatably arranged on the other side of the outer edge of the stator support (6); the inner edge of the left end cover (8) is fixedly connected with the left end cover bearing (9), the inner edge of the right end cover (4) is fixedly connected with the right end cover bearing (5), and a first through hole (13) is formed in the inner wall of the other end of the stator support (6).
2. A hollow shaft in-wheel motor according to claim 1, wherein the inner wall of said stator frame is provided with a plurality of fixing blocks (12), a plurality of said fixing blocks (12) are located in said first through holes (13), and said fixing blocks (12) are arranged in a circumferential array around the axis of said motor rotor assembly.
3. A hollow axle in-wheel motor according to claim 1, characterized in that the outer wall of the left end cap (8) and the outer wall of the right end cap (4) are provided with mounting holes, respectively, through which the inner edge of the wheel hub (1) is detachably connected to the outer wall of the left end cap (8) and an outer wall of the right end cap (4), respectively.
4. A hollow axle in-wheel motor according to claim 3, further comprising fastening screws (10), each fastening screw (10) being mounted in one of said mounting holes, respectively, the inner rim of said wheel hub (1) being detachably connected to the outer wall of said left end cap (8) and the outer wall of said right end cap (4) by said fastening screws (10), respectively.
5. A hollow axle in-wheel motor according to claim 1, characterized in that the outer edge of said stator frame (6) is provided with a limit portion (18), and one side of the other end of said stator winding (3) abuts against said limit portion (18).
6. A hollow axle in-wheel motor according to claim 1, characterized in that the stator frame (6) is provided with a first protrusion (16), the inner wall of the left end cover (8) is provided with a second protrusion (17), the inner wall of the right end cover (4) is provided with a third protrusion (22), a first accommodating cavity (19) is formed between the second protrusion (17) and the stator frame (6) and the first protrusion (16), a second accommodating cavity (20) is formed between the third protrusion (22) and the stator frame (6) and the first protrusion (16), the left end cover bearing (9) is installed in the first accommodating cavity (19), and the right end cover bearing (5) is installed in the second accommodating cavity (20).
7. A hollow axle in-wheel motor according to claim 6, characterized in that said first protrusion (16) is provided with a wire guide hole (14), and the other end of said lead-out wire (7) is led out through said wire guide hole (14).
8. A hollow axle in-wheel motor according to claim 2, wherein each of said fixing blocks (12) has a second through hole (21) formed therein, each of said second through holes being in communication with said first through hole.
9. A hollow axle in-wheel motor according to claim 6, wherein said housing space (11) is in communication with said first housing cavity (19), and said housing space (11) is in communication with said second housing cavity (20).
10. A hollow axle in-wheel motor according to claim 1, characterized in that said hub (1) is of annular configuration and that a third through hole (15) is provided on one side of the outer wall of said hub (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791434.1U CN214154205U (en) | 2020-11-26 | 2020-11-26 | Hollow shaft hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022791434.1U CN214154205U (en) | 2020-11-26 | 2020-11-26 | Hollow shaft hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214154205U true CN214154205U (en) | 2021-09-07 |
Family
ID=77567160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022791434.1U Active CN214154205U (en) | 2020-11-26 | 2020-11-26 | Hollow shaft hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214154205U (en) |
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2020
- 2020-11-26 CN CN202022791434.1U patent/CN214154205U/en active Active
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