CN219812016U - Brushless motor rotor magnet's fixed frock - Google Patents
Brushless motor rotor magnet's fixed frock Download PDFInfo
- Publication number
- CN219812016U CN219812016U CN202320565573.3U CN202320565573U CN219812016U CN 219812016 U CN219812016 U CN 219812016U CN 202320565573 U CN202320565573 U CN 202320565573U CN 219812016 U CN219812016 U CN 219812016U
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- China
- Prior art keywords
- magnet
- rotor
- baffle plate
- iron core
- fishbone
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 7
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a fixture for fixing a rotor magnet of a brushless motor, which comprises a rotor iron core, wherein connecting holes and iron core grooves are uniformly and alternately formed in the rotor iron core around an axis, the magnet is arranged in the iron core groove, the rotor iron core is fixed with the magnet through a front baffle plate, a rear baffle plate and a motor shaft, fishbone structures are arranged at positions of the front baffle plate and the rear baffle plate corresponding to the connecting holes, the fishbone structures are in interference fit with the connecting holes, and the motor shaft is matched with interference fit of the motor shaft to the central holes of the front baffle plate and the rear baffle plate, so that the rotor iron core is fixed with the magnet. The design of the device can lead the buckling force between the front baffle plate and the rear baffle plate and the rotor iron core to be large, thereby leading the silicon steel sheet layers of the rotor iron core to form a buckling state with high stability; however, due to the structural design of the fishbone structure, the fishbone structure is stabbed and lowered during installation, so that the installation force is small but the buckling force is large.
Description
Technical Field
The utility model belongs to the technical field of brushless motors, and particularly relates to a fixture for fixing a rotor magnet of a brushless motor.
Background
The brushless motor assembly for the automobile radiating fan comprises a stator assembly, a rotor assembly and a radiating cover, wherein the stator assembly, the rotor assembly and the radiating cover are main components of the brushless motor, the stator assembly comprises a stator assembly, a stator shell and a PCBA assembly, and the stator assembly is embedded into the stator shell; the rotor assembly comprises a rotor core, a rotor shaft and magnetic steel, a center hole is formed in the center of the rotor core, placing grooves used for placing the magnetic steel are uniformly distributed in the circumference of the periphery of the rotor core, and the rotor assembly is located in the stator assembly.
Chinese patent application number CN202221382511.0 provides a brushless motor rotor for improving the fixing performance of magnets, which is used in the motor field, and the rotor core and the magnet mounting pad are respectively fixed and sleeved on the periphery of the rotor shaft; the Hall magnet is arranged on the magnet mounting pad; because the periphery of the rotor core is convexly provided with a plurality of positioning convex blocks, and the convex heights of the positioning convex blocks are equal, when the magnet outer ring and the magnet mounting pad are assembled, the inner wall of the magnet outer ring contacts the positioning convex blocks to realize circumferential positioning, so that the coaxiality between the magnet outer ring and the rotor shaft is ensured; gaps are formed at positions where the positioning convex blocks are not arranged, the sizes of the gaps at all positions in the circumferential direction are equal, glue can be contained in the gaps, the bonding and the consumption of the glue can be balanced, and the reliability and the stability of the whole assembly body are improved.
The prior rotor assembly fixed magnet has the following modes:
1. put into rotor core with magnet, magnet both sides (big face) and rotor core recess side laminating use glue adhesive to fix magnet and iron core, reach the purpose of installation, this kind of mode installation fastness is higher, nevertheless has a bigger shortcoming to be: the out-of-line procedure is needed to be added for glue fixation, equipment is used for glue dispensing and installation, the curing period is long, the magnet installation limit is needed to be additionally managed and controlled, and the number of semi-finished products in the production process is increased.
2. Combining the magnet with the rotor core, and performing injection molding coating on the outer sides of the core and the magnet. The rotor, the magnet and the injection molding material are integrated, so that the installation firmness is high, but the production cycle outside the line is increased, and the process control cost is increased.
3. Put into rotor core with magnet, both sides use the clamp plate fixed, use the rivet to fix the clamp plate on the iron core, make rotor core and magnet fixed, the magnet can exist certain clearance after this kind of mode installation, can appear the condition that magnet rocked, only is fit for neodymium iron boron strong magnetism, can exist after the ferrite magnet installation and rock abnormal sound, and can't satisfy the magnet and than the thicker higher structure of iron core thickness.
In general, the fastening force of the fixing mode in the prior art is small, the stability after installation is poor, and the installation process is complex.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present utility model is to provide a fixture for fixing a rotor magnet of a brushless motor.
The utility model provides the following technical scheme:
the utility model provides a fixed frock of brushless motor rotor magnet, includes the rotor core, the rotor core evenly staggers around the axle center and is equipped with connecting hole and iron core groove, and the iron core inslot is arranged in to magnet, and the rotor core is fixed with magnet through preceding baffle, backplate and motor shaft, preceding baffle and backplate correspond the connecting hole position and all are equipped with the fishbone structure, fishbone structure and connecting hole interference fit, cooperation motor shaft are to the interference fit of the centre bore of preceding baffle and backplate to fixed rotor core and magnet.
Specifically, the fishbone structure is the spliced pole of establishing on the baffle, is equipped with a plurality of layers of fishbone on the spliced pole, and every layer of fishbone is the oblique angle state simultaneously, and makes the fishbone structure install the time along the thorn and descend.
Specifically, the front baffle and the rear baffle are annular, and are fixedly clamped with the side wall of the rotor core through fishbone structures embedded in the connecting holes of the rotor core to form connection.
Specifically, the magnet is higher than the rotor core in height, and a plurality of core slots through the rotor core are blocked into the rotor core, and one side is aligned with the front baffle.
Specifically, the rotor core is composed of a plurality of stacked silicon steel sheets.
Specifically, the number of magnets is ten.
The beneficial effects of the utility model are as follows:
the design of the device can lead the buckling force between the front baffle plate and the rear baffle plate and the rotor iron core to be large, thereby leading the silicon steel sheet layers of the rotor iron core to form a buckling state with high stability; however, due to the structural design of the fishbone structure, the fishbone structure is stabbed and lowered during installation, so that the installation force is small but the buckling force is large.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a three-dimensional view of the present utility model;
FIG. 3 is a front view of the present utility model;
fig. 4 is a cross-sectional view at A-A in fig. 3.
Detailed Description
As shown in fig. 1 to 4, the utility model provides a fixture for fixing a rotor magnet of a brushless motor, which comprises a rotor iron core 4, wherein the rotor iron core 4 is uniformly and alternately provided with connecting holes 7 and iron core grooves around an axis, a magnet 5 is arranged in the iron core grooves, the rotor iron core 4 is fixed with the magnet 5 through a front baffle 3, a rear baffle 6 and a motor shaft 1, two sides of the motor shaft 1 are movably arranged on other devices through bearings 2, fishbone structures 8 are arranged at positions of the front baffle 3 and the rear baffle 6 corresponding to the connecting holes 7, the fishbone structures 8 are in interference fit with the connecting holes 7, and the rotor iron core 4 and the magnet 5 are fixed by matching with interference fit of the motor shaft 1 to the central holes of the front baffle 3 and the rear baffle 6.
The fishbone structure 8 is a connecting column arranged on the baffle plate 3, a plurality of layers of fishbone are arranged on the connecting column, and each layer of fishbone is in an oblique angle state, and the fishbone structure 8 is arranged along the fishbone.
Therefore, the fishbone structure 8 is installed by being pricked downwards, so that the installation force is small, the buckling force is large after the reverse buckling is formed, the fishbone structure is easy to form a buckling state with the silicon steel sheet layer and the interlayer, and the stability is high.
The device is mainly clamped by using a fishbone structure 8 through the front baffle 3 and the rear baffle 6, and the center holes of the front baffle 3 and the rear baffle 6 are in interference fit with the motor shaft 1, so that the magnet 5 is fixed in an iron core groove in an internal and external fixing mode. The rotor core 4 includes a plurality of stacked silicon steel sheets to form a rotor core assembly.
The front baffle 3 is annular, and the front baffle 3 is fixedly clamped with the side wall of the rotor core 4 through a fishbone structure 8 embedded in a connecting hole 7 of the rotor core 4 to form connection, and a central hole of the front baffle 3 is in interference fit with the motor shaft 1, so that the center and the periphery of the baffle are effectively fixed.
The height of the magnet 5 is higher than that of the rotor core 4, a plurality of core slots of the rotor core 4 are clamped into the rotor core 4, and one side of the magnet is aligned with the front baffle 3, so that the height consistency of the magnet is ensured. The rear baffle 6 is similar to the front baffle 3, if the space is abundant, the bottom rib position of the rear baffle 6 and the side wall length of the central hole of the rear baffle 6 can be heightened, and a plurality of fishbone structures 8 are also used for being installed in the connecting holes 7 of the rotor core 4; specifically, the number of magnets 5 in the present apparatus is ten.
The working principle of the utility model is as follows:
the magnets 5 are installed in corresponding connecting holes 7 described by the rotor core 4 according to polarity requirements, the rotor core 4 is placed on a positioning tool, the front baffle 3 is placed above the tool, the rear baffle 6 is placed below the tool, the fishbone structures 8 of the front baffle 3 and the rear baffle 6 are clamped and pressed into the connecting holes 7 of the rotor core 4 by using servo press-fitting equipment, after press-fitting is completed, the motor shaft 1 is placed above the tool according to the direction, the motor shaft 1 is pressed into the central holes of the rotor core 4, the front baffle 3 and the rear baffle 6 by using press-fitting equipment, press-fitting effect and dynamic balance inspection are carried out on products after press-fitting is completed, press-fitting of the bearing 2 is carried out at the front end and the rear end of the motor shaft 1, and rotor assembly installation is completed after press-fitting.
The design of the device can lead the buckling force between the front baffle plate 3 and the rear baffle plate 6 and the rotor core 4 to be large, thereby leading the silicon steel sheet layers of the rotor core 4 to form a buckling state with high stability; however, due to the structural design of the fishbone structure 8, the fishbone structure is installed by being pricked downwards, so that the installation force is small but the buckling force is large.
The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a brushless motor rotor magnet's fixed frock, includes rotor core (4), rotor core (4) evenly stagger around the axle center is equipped with connecting hole (7) and iron core groove, and in iron core inslot was arranged in to magnet (5), rotor core (4) are fixed with magnet (5) through preceding baffle (3), backplate (6) and motor shaft (1),
characterized in that it also comprises
The front baffle (3) and the rear baffle (6) are respectively provided with a fishbone structure (8) corresponding to the connecting hole (7), the fishbone structure (8) is in interference fit with the connecting hole (7), and the motor shaft (1) is matched with the interference fit of the front baffle (3) and the central hole of the rear baffle (6), so that the rotor iron core (4) is fixed with the magnet (5).
2. The fixture for fixing the rotor magnet of the brushless motor according to claim 1, wherein the fishbone structure (8) is a connecting column arranged on the baffle plate (3), a plurality of layers of fishbone are arranged on the connecting column, each layer of fishbone is in an oblique angle state, and the fishbone structure (8) is arranged in a downward direction.
3. The fixture for fixing the rotor magnet of the brushless motor according to claim 1, wherein the front baffle plate (3) and the rear baffle plate (6) are annular, and the front baffle plate (3) and the rear baffle plate (6) are fixedly clamped with the side wall of the rotor core (4) through a fishbone structure (8) embedded in a connecting hole (7) of the rotor core (4) to form connection.
4. A fixture for fixing a rotor magnet of a brushless motor according to claim 1, characterized in that the magnet (5) is higher than the rotor core (4), and is clamped into the rotor core (4) by a plurality of core slots of the rotor core (4), and one side is aligned with the front baffle (3).
5. A fixture for fixing a rotor magnet of a brushless motor according to claim 1, wherein the rotor core (4) is composed of a plurality of stacked silicon steel sheets.
6. A fixture for fixing magnets of a rotor of a brushless motor according to any one of claims 1-5, characterized in that the number of magnets (5) is ten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320565573.3U CN219812016U (en) | 2023-03-17 | 2023-03-17 | Brushless motor rotor magnet's fixed frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320565573.3U CN219812016U (en) | 2023-03-17 | 2023-03-17 | Brushless motor rotor magnet's fixed frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219812016U true CN219812016U (en) | 2023-10-10 |
Family
ID=88214198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320565573.3U Active CN219812016U (en) | 2023-03-17 | 2023-03-17 | Brushless motor rotor magnet's fixed frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219812016U (en) |
-
2023
- 2023-03-17 CN CN202320565573.3U patent/CN219812016U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |