CN220492722U - Outer rotor permanent magnet direct drive motor - Google Patents
Outer rotor permanent magnet direct drive motor Download PDFInfo
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- CN220492722U CN220492722U CN202322075117.3U CN202322075117U CN220492722U CN 220492722 U CN220492722 U CN 220492722U CN 202322075117 U CN202322075117 U CN 202322075117U CN 220492722 U CN220492722 U CN 220492722U
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses an outer rotor permanent magnet direct drive motor, and belongs to the technical field of motors. The motor comprises an outer rotor, a stator, a rotor shaft and a motor base, wherein the motor base comprises a base and a stator base, and the base and the stator base are assembled and fixed together along the axial direction of the motor; wherein, one end of the stator base far away from the base is provided with a first bearing; the base is provided with a bearing chamber, and a second bearing is arranged in the bearing chamber; the rotor shaft is arranged on the central axis of the motor base in a penetrating way, and two ends of the rotor shaft are respectively connected with the first bearing and the second bearing. The motor base is formed by assembling the connecting base and the stator base, the stator base is provided with the first bearing, the connecting base is internally provided with the second bearing, and the two bearings can realize stable installation and positioning of the rotor shaft; when the size of the motor load end structural member needs to be adjusted due to load change, only the connecting seat needs to be replaced at the moment, and the whole motor seat does not need to be replaced, so that the aim of saving cost is achieved.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to an outer rotor permanent magnet direct drive motor.
Background
The direct drive motor is a direct drive motor for short, and mainly refers to a structure that the motor does not need to pass through a transmission device, such as a transmission belt, a speed reducer and the like, when driving a load. Compared with the traditional combined driving device of the three-phase asynchronous motor acceleration and deceleration machine, the direct-drive motor can save about 30% of energy consumption, and is more and more widely applied to various occasions, such as stirring stations, washing machines and the like.
The direct-drive motor comprises a rotating shaft, the rotating shaft is installed and positioned in the motor shell through two bearings at one end and the other end, one end of the rotating shaft is an output end, and the output end is used for being connected with an external load. Because the external load condition is different and comprises different specification and dimensions, the diameter of the output shaft of the rotating shaft is correspondingly adjusted, and the bearing for bearing the output end of the rotating shaft is correspondingly replaced. However, the existing motor casing is generally arranged into an integral structure, and can only be matched with the rotating shafts with the same specification, when the situation is met, the rotating shafts can be turned and then reused, but the motor base needs to be replaced integrally, so that the cost is not saved.
In view of this, a new solution is needed to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide an outer rotor permanent magnet direct-drive motor which is used for solving the problem of high replacement cost caused by an integral structure of a motor casing in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical means:
the outer rotor permanent magnet direct-drive motor comprises an outer rotor, a stator, a rotor shaft and a motor base, wherein the motor base comprises a base and a stator base, and the base and the stator base are assembled and fixed together along the axial direction of the motor;
wherein, one end of the stator seat far away from the base is provided with a first bearing; the base is provided with a bearing chamber, and a second bearing is arranged in the bearing chamber;
the rotor shaft is arranged on the central axis of the motor base in a penetrating mode, and two ends of the rotor shaft are respectively connected with the first bearing and the second bearing.
As a further improvement, a sinking table is arranged at one end face of the base, facing the stator seat, and the sinking table is matched with the shape outline of the bottom end part of the stator seat; during assembly, the stator seat is embedded in the sinking table.
As a further improvement, the outer rotor comprises a rotor cylinder, magnetic steel and a rotor end plate, wherein the magnetic steel is attached to the inner wall of the rotor cylinder and used for forming a magnetic field; the center of the rotor end plate is synchronously connected with the rotor shaft, the rotor end plate and the rotor shaft are mutually perpendicular, and the periphery of the rotor end plate is fixedly connected with the rotor cylinder.
As a further improvement, the stator comprises an iron core and a stator winding, wherein the stator winding is wound and positioned on the iron core and sleeved on the outer surface of the stator seat together.
As a further improvement, the base further comprises a first flange and a second flange, and the bearing chamber is formed between the two flanges;
the first flange is used for connecting motor structural members, and the second flange is used for connecting external loads.
As a further development, the diameter of the middle section of the rotor shaft is larger than the diameter of the two ends of the rotor shaft, and the middle section of the rotor shaft is just clamped between the first bearing inner ring and the second bearing inner ring.
As a further improvement, a bearing mounting seat is fixedly arranged in the bearing chamber, the bearing mounting seat is provided with a bearing mounting cavity, and a bearing gland is fixedly connected to the opening of the bearing mounting cavity.
As a further improvement, one end of the stator seat, which is far away from the base, is fixedly connected with a bearing cover, a bearing hole is formed in the center of the bearing cover, and the outer ring of the first bearing is in interference fit connection with the hole wall of the bearing hole.
As a further improvement, an inner spigot is further arranged at one end of the stator base away from the base, and the bearing cover is fixedly connected with the inner spigot.
As a further improvement, the motor further comprises a shell, wherein the shell is fixedly connected to the motor base and covers the periphery of the outer rotor.
Compared with the prior art, the utility model has the following technical effects:
the motor base is formed by assembling the connecting base and the stator base, the stator base is provided with the first bearing, the connecting base is internally provided with the second bearing, and the two bearings can realize stable installation and positioning of the rotor shaft; when the size of the motor load end structural member needs to be adjusted due to load change, only the connecting seat needs to be replaced at the moment, and the whole motor seat does not need to be replaced, so that the aim of saving cost is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a cross-sectional view of an outer rotor permanent magnet direct drive motor of the present utility model;
FIG. 2 illustrates a first perspective view of the base of FIG. 1;
FIG. 3 illustrates a second perspective view of the base of FIG. 1;
FIG. 4 shows a perspective view of the stator base of FIG. 1;
FIG. 5 shows a perspective view of the bearing cap of FIG. 1;
FIG. 6 shows a schematic structural view of the stator of FIG. 1;
fig. 7 shows an assembly of the outer rotor of fig. 1 with the rotor shaft.
Description of main reference numerals:
outer rotor-101; a rotor cylinder-102; magnetic steel-103; rotor end plates-104; positioning a sinking platform-105; a stator-201; an iron core-202; stator windings-203; a rotor shaft-301; motor mount-401; a base-402; a stator base-403; a first bearing-404; bearing chamber-405; a second bearing-406; sink table-407; a first flange-408; a second flange-409; bearing mount-410; bearing gland-411; locating step-412; inner spigot-413; bearing cap-414; bearing hole-415; housing-501.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other. Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.
Examples
Referring to fig. 1, the embodiment discloses an outer rotor permanent magnet direct drive motor, which comprises an outer rotor 101, a stator 201, a rotor shaft 301 and a motor base 401.
The motor base 401 comprises a base 402 and a stator base 403, the base 402 and the stator base 403 are assembled and fixed together along the axial direction of the motor, and the assembled motor base 401 forms the structural foundation of the motor.
Wherein, a first bearing 404 is mounted at an end of the stator base 403 away from the base 402; the base 402 is provided with a bearing chamber 405, and a second bearing 406 is installed in the bearing chamber 405; the rotor shaft 301 is disposed on the central axis of the motor base 401 in a penetrating manner, and two ends of the rotor shaft 301 are respectively connected with the first bearing 404 and the second bearing 406.
As described above, the motor seat 401 of the present utility model is assembled by the connecting seat and the stator seat 403, the stator seat 403 is provided with the first bearing 404, and the connecting seat is internally provided with the second bearing 406, and the two bearings can realize stable installation and positioning of the rotor shaft 301; this split structure can bring the following advantages: when the size of the motor load end structural member needs to be adjusted due to external load replacement, only the connecting seat needs to be replaced at the moment, and the whole motor seat 401 does not need to be replaced, so that the aim of saving cost is achieved.
Referring to fig. 2-3 in combination, in the embodiment, a counter 407 is disposed at an end surface of the base 402 facing the stator base 403, and the counter 407 matches with a shape profile of a bottom end of the stator base 403; when assembled, the stator base 403 is embedded in the counter sink 407, and then the stator base 403 is fixedly attached to the base 402 by fastening elements such as screws. The setting of this sunk platform 407 makes things convenient for the coaxial butt joint between stator seat 403 and the base 402, compares more convenient through the visual inspection or combines other auxiliary means, can improve packaging efficiency.
More specifically, the base 402 further includes a first flange 408 and a second flange 409, and the bearing chamber 405 is formed between the two flanges; wherein the first flange 408 is used for connecting with motor structural members and the second flange 409 is used for connecting with external loads. The motor structural member refers to a component of the motor itself, such as a stator base 403, a housing, and the like. The two flanges are arranged in parallel, so that the motor is convenient to assemble and connect with a load.
In this embodiment, a bearing mount 410 is fixedly disposed in the bearing chamber 405, and the bearing mount 410 has a bearing mounting cavity (not shown), and a bearing cover 411 is fixedly connected to an opening of the bearing mounting cavity. During installation, the second bearing 406 is placed in the bearing installation cavity, so that the outer ring of the second bearing 406 is in interference fit connection with the inner wall of the cavity; then, the bearing gland 411 is covered on the outer side of the second bearing 406, and finally the bearing gland 411 is fixed on the bearing mounting seat 410 through a plurality of screws, thereby completing the mounting of the second bearing 406.
It will be apparent to those skilled in the art that the provision of the bearing mount 410 and the bearing gland 411 in the bearing chamber 405 is considered to facilitate the replacement of the second bearing 406 of different specifications, i.e., if the specification and the size of the second bearing 406 need to be replaced, the entire base 402 need not be replaced, but only the bearing mount 410 and the bearing gland 411 need be replaced. Thus, in other embodiments, the technician may also install the second bearing 406 directly within the bearing chamber 405, except in this case, with replacement of the second bearing 406, the entire base 402 would need to be replaced.
Referring to fig. 4 and 6 in combination, in the present embodiment, the stator base 403 is a structural member for fixing the stator 201, the stator base 403 is in a straight cylindrical shape, and a positioning step 412 is provided on an outer wall of the straight cylinder, so that an upper diameter of the straight cylinder is smaller than a bottom diameter thereof. The stator 201 specifically includes a core 202 and a stator winding 203, and the stator winding 203 is wound around the core 202 and is positioned on the outer surface of the stator seat 403. The height of the positioning step 412 along the surface of the stator seat 403 is a preset height, and a technician can flexibly set the positioning step according to practical situations. Providing the positioning step 412 will improve the assembly efficiency of the stator 201: the wound stator 201 is sleeved from top to bottom along the outer surface of the stator seat 403 until the bottom edge of the stator 201 abuts against the positioning step 412, and after the stator 201 is sleeved on the stator seat 403 in the prior art, whether the mounting position of the stator 201 relative to the stator seat 403 meets the standard or not needs to be measured, if the mounting position does not meet the standard, multiple position adjustments are needed, so that the positioning step 412 can be mounted in place at one time in this embodiment, and the assembly efficiency of the stator 201 can be improved.
Referring to fig. 5 in combination, in the present embodiment, an inner spigot 413 is further disposed at an end of the stator base 403 away from the base 402, and a bearing cover 414 is mounted on the inner spigot 413. Specifically, the inner spigot 413 is integrally annular and is connected to a side wall of the stator base 403. The edge of the bearing cap 414 is fixed to the inner spigot 413 by a screw. The provision of the inner spigot 413 can enhance the structural strength of the end of the stator base 403.
The bearing cover 414 is used for installing the first bearing 404, specifically, a bearing hole 415 is formed in the center of the bearing cover 414, and an outer ring of the first bearing 404 is in interference fit connection with a hole wall of the bearing hole 415.
It should be noted that, in other embodiments, the bearing cap 414 may be directly fixedly connected to the end of the stator base 403, so as to omit the inner spigot 413. Alternatively, the first bearing 404 may be directly mounted on the inner spigot 413, but the structure of the inner spigot 413 may be slightly changed to adapt to the first bearing 404, for example, the bearing hole 415 of the bearing cover 414 is transplanted to the center of the inner spigot 413.
Referring to fig. 7 in combination, in the present embodiment, an outer rotor 101 includes a rotor barrel 102, magnetic steel 103 and a rotor end plate 104, wherein the magnetic steel 103 is attached to an inner wall of the rotor barrel 102 for forming a magnetic field; the center of the rotor end plate 104 is synchronously coupled with the rotor shaft 301, which are perpendicular to each other, and the periphery of the rotor end plate 104 is fixedly connected with the rotor cylinder 102. Specifically, the center of the rotor end plate 104 and the rotor shaft 301 are synchronously coupled by a double-bond structure, which is a common technique for industrially synchronously coupling two components, and will not be described herein. The side of the rotor end plate 104 facing the rotor can be further provided with a positioning sink 105 for facilitating rapid butt joint positioning between the rotor barrel 102 and the rotor end plate 104 during assembly, and fixing connection of the rotor end plate 104 and the rotor end plate through screws.
In this embodiment, the motor further includes a housing 501, where the housing 501 is fixedly connected to the motor base 401 and covers the outer rotor 101, and the housing 501 is used to protect the internal structure of the motor.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications of the utility model are intended to fall within the scope of the utility model.
Claims (10)
1. The utility model provides an external rotor permanent magnet direct drive motor, includes external rotor, stator, rotor shaft and motor cabinet, its characterized in that: the motor base comprises a base and a stator base, and the base and the stator base are assembled and fixed together along the axial direction of the motor;
wherein, one end of the stator seat far away from the base is provided with a first bearing; the base is provided with a bearing chamber, and a second bearing is arranged in the bearing chamber;
the rotor shaft is arranged on the central axis of the motor base in a penetrating mode, and two ends of the rotor shaft are respectively connected with the first bearing and the second bearing.
2. The outer rotor permanent magnet direct drive motor according to claim 1, wherein a sinking table is arranged on an end face of the base facing the stator base, and the sinking table is matched with the shape outline of the bottom end part of the stator base; during assembly, the stator seat is embedded in the sinking table.
3. The outer rotor permanent magnet direct drive motor according to claim 1, wherein the outer rotor comprises a rotor cylinder, magnetic steel and a rotor end plate, wherein the magnetic steel is attached to the inner wall of the rotor cylinder and is used for forming a magnetic field; the center of the rotor end plate is synchronously connected with the rotor shaft, the rotor end plate and the rotor shaft are mutually perpendicular, and the periphery of the rotor end plate is fixedly connected with the rotor cylinder.
4. The outer rotor permanent magnet direct drive motor of claim 1, wherein the stator comprises a core and a stator winding, the stator winding being wound and positioned on the core and together nested on an outer surface of the stator base.
5. The outer rotor permanent magnet direct drive motor according to claim 1, wherein the base further comprises a first flange and a second flange, the bearing chamber being formed between the two flanges;
the first flange is used for connecting motor structural members, and the second flange is used for connecting external loads.
6. The outer rotor permanent magnet direct drive motor of claim 1, wherein the diameter of the middle section of the rotor shaft is larger than the diameters of the two ends of the rotor shaft, and the middle section of the rotor shaft is just clamped between the first bearing inner ring and the second bearing inner ring.
7. The outer rotor permanent magnet direct drive motor according to claim 1, wherein a bearing mounting seat is fixedly arranged in the bearing chamber, the bearing mounting seat is provided with a bearing mounting cavity, and a bearing gland is fixedly connected to an opening of the bearing mounting cavity.
8. The outer rotor permanent magnet direct drive motor according to claim 1, wherein one end of the stator base away from the base is fixedly connected with a bearing cover, a bearing hole is formed in the center of the bearing cover, and an outer ring of the first bearing is in interference fit connection with a hole wall of the bearing hole.
9. The outer rotor permanent magnet direct drive motor according to claim 8, wherein an inner spigot is further provided at an end of the stator base away from the base, and the bearing cover is fixedly connected to the inner spigot.
10. The outer rotor permanent magnet direct drive motor of claim 1, further comprising a housing fixedly connected to the motor mount and covering the outer rotor periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322075117.3U CN220492722U (en) | 2023-08-03 | 2023-08-03 | Outer rotor permanent magnet direct drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322075117.3U CN220492722U (en) | 2023-08-03 | 2023-08-03 | Outer rotor permanent magnet direct drive motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220492722U true CN220492722U (en) | 2024-02-13 |
Family
ID=89837624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322075117.3U Active CN220492722U (en) | 2023-08-03 | 2023-08-03 | Outer rotor permanent magnet direct drive motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220492722U (en) |
-
2023
- 2023-08-03 CN CN202322075117.3U patent/CN220492722U/en active Active
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