CN218526152U - Rotor and brushless motor of high reliability anti big moment of torsion structure - Google Patents
Rotor and brushless motor of high reliability anti big moment of torsion structure Download PDFInfo
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- CN218526152U CN218526152U CN202222820497.4U CN202222820497U CN218526152U CN 218526152 U CN218526152 U CN 218526152U CN 202222820497 U CN202222820497 U CN 202222820497U CN 218526152 U CN218526152 U CN 218526152U
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Abstract
The utility model discloses a rotor and brushless motor of anti big moment of torsion structure of high reliability, including rotor shaft, fan, rotor support, casing, magnetic shoe and two clamping rings, fan, rotor support coaxial assembly are in the one end of rotor shaft, and rotor support interference fit installs on the casing, and two clamping rings are installed on the inside wall of casing to the magnetic shoe assembles between two clamping rings; the glue hiding groove is further formed in the inner side wall of the machine shell, the glue hiding groove is coated with structural glue, so that the machine shell is bonded with the rotor support, and the rotor support is fixed with the machine shell through screws. The utility model relates to an anti big torque structure's of high reliability rotor and brushless motor bonds, and rotor support fixes through the screw with the structure glue of hiding the casing in gluey groove through rotor support and casing interference fit, rotor support, can realize triple connection antitorque, guarantees the reliability in the high-speed rotation of rotor, improves the stability of product.
Description
Technical Field
The utility model relates to a motor structure field especially relates to an anti big torque structure's of high reliability rotor and brushless motor.
Background
At present, brushless motor is more and more extensive in the society, and in unmanned helicopter, outer rotor brushless motor relies on itself to have characteristics such as efficient, big load, big moment of torsion, long-lived, the noise is little, high reliability, makes it become important component in the unmanned aerial vehicle field.
The unmanned helicopter drives the rotor wing to generate lift force and operating force by the motor, can vertically rise and fall and hover in the air, can flexibly fly in any direction, and has unique functions in modern war, economic construction and daily life. The unmanned helicopter has the advantages of relatively low cost, no casualty risk, strong survivability, good maneuvering performance, convenience in use and the like, and is widely applied to a plurality of fields of aerial photography, geological and geomorphic surveying and mapping, forest fire extinguishing, patrol, emergency disaster relief, material delivery and the like.
The brushless motor has an internal structure composed of important rotor and stator components, at present, when the rotor of the external rotating motor is mostly rotated, a bracket magnetic steel tooth groove is integrated with a bracket, the outer circular surface of the bracket is matched with the smooth surface of a machine shell to the optical surface, the structure can not meet the application requirement of large torque, and the rated torque of the motor of the unmanned helicopter reaches 26N.m. And because the torque output to the blade by the motor is transmitted to the rotor bracket through the magnetic shoe casing, the requirement on the matching connection reliability of the bracket and the casing is high, and particularly for the unmanned helicopter with low rotating speed and large torque application.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a rotor and brushless motor of anti big moment of torsion structure of high reliability.
The purpose of the utility model is realized through the following technical scheme:
a high reliability high torque resistant structural rotor comprising: a rotor shaft, a fan, a rotor bracket, a machine shell, a magnetic shoe and two pressure rings,
the fan and the rotor support are coaxially assembled at one end of the rotor shaft, the rotor support is arranged on the machine shell in an interference fit mode, the two pressing rings are arranged on the inner side wall of the machine shell, and the magnetic shoe is assembled between the two pressing rings;
the inner side wall of the machine shell is further provided with a glue hiding groove, the glue hiding groove is coated with structural glue, so that the machine shell is bonded with the rotor support, and the rotor support is fixed with the machine shell through screws.
In one embodiment, the rotor shaft and the rotor support are connected by an interference fit.
In one embodiment, the rotor holder and the fan are fixed by screws.
In one embodiment, the rotor bracket is provided with a threaded hole, the casing is provided with a screw hole, and the threaded hole is communicated with the screw hole and is fixed by a screw.
In one embodiment, the magnetic shoe is provided with a plurality of pieces, and each magnetic shoe is annularly distributed on the inner side wall of the casing.
In one embodiment, a plurality of spacing posts are arranged on the pressing ring, and each magnetic shoe is correspondingly embedded between two spacing posts.
In one embodiment, the rotor shaft is a hollow shaft, one end of the rotor shaft is provided with a positioning knurling part, and the other end of the rotor shaft is provided with an avoiding groove.
In one embodiment, the rotor support is provided with lightening holes and ventilation holes, and the lightening holes and the ventilation holes are arranged at intervals.
In one embodiment, the fan is a plastic fan structure.
The utility model also provides a brushless motor, include as above the rotor of the anti big moment of torsion structure of high reliability, still include stator module, retaining ring and back lid, stator module with the coaxial assembly of rotor, and the retaining ring set up in the rotor shaft is kept away from on one end of fan, the back lid install in on the stator module.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model relates to a rotor and brushless motor of anti big moment of torsion structure of high reliability, through rotor spider and casing interference fit, rotor spider and the casing of glue hiding groove bond with the structure glue, rotor spider and casing are fixed through the screw, can realize triple connection antitorque, guarantee the reliability in the high-speed rotation of rotor, improve the stability of the product; and the utility model discloses having removed conventional support magnetic shoe groove structure, having used two clamping rings to fix the magnetic shoe, reduced manufacturing procedure, reduced the parts machining cost, improved the easy processing nature of part, still improved the torsional resistance of whole rotor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a rotor with a high-reliability and large-torque-resistant structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a rotor of another embodiment of the high reliability high torque resistant structure shown in FIG. 1;
FIG. 3 is a schematic structural view of the rotor shaft shown in FIG. 1;
FIG. 4 is a schematic view of the structure of the rotor support shown in FIG. 4;
fig. 5 is a schematic structural diagram of a brushless motor according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, a rotor with high reliability and large torque resistance structure includes: the fan comprises a rotor shaft 100, a fan 200, a rotor bracket 300, a machine shell 400, a magnetic shoe 500 and two pressure rings 600.
The fan and the rotor support are coaxially assembled at one end of the rotor shaft, the rotor support is arranged on the machine shell in an interference fit mode, the two pressing rings are arranged on the inner side wall of the machine shell, and the magnetic shoe is assembled between the two pressing rings; the inner side wall of the casing is further provided with a glue hiding groove, the glue hiding groove is coated with structural glue, so that the casing is bonded with the rotor support, and the rotor support is fixed with the casing through screws. In this embodiment, hide the gluey groove for the spiral on the casing glues the groove, conveniently fills the structural adhesive to make the installation of casing and support more firm, make the structural stability of rotor better.
Thus, through interference fit of the rotor support and the shell, bonding of the rotor support and the shell of the glue hiding groove by structural glue, and fixation of the rotor support and the shell by screws, triple connection torsion resistance can be realized, reliability of the rotor in high-speed rotation is ensured, and stability of a product is improved; and the utility model discloses having removed conventional support magnetic shoe groove structure, having used two clamping rings to fix the magnetic shoe, reduced manufacturing procedure, reduced the parts machining cost, improved the easy processing nature of part, still improved the torsional resistance of whole rotor.
It should be noted that the rotor shaft and the rotor support are connected by interference fit. Specifically, the rotor support is coaxially assembled to one end of the shaft, the knurled surface of the shaft is in interference fit with the inner circular hole of the rotor support, and structural glue is used for reinforcement.
It should be noted that the rotor holder and the fan are fixed by screws. Therefore, the rotor support and the fan are fixedly connected through screws and reinforced through thread glue. The fan and the support are of a split structure, so that a plurality of blades can be manufactured, the heat dissipation effect is greatly enhanced, and meanwhile, the fan without stress can be made of plastic, so that the weight reduction can be realized while the heat dissipation is ensured.
In this embodiment, a threaded hole is formed in the rotor bracket, a screw hole is formed in the casing, and the threaded hole is communicated with the screw hole and is fixed through a screw. The rotor support is in interference fit with the casing, a screw hole of the rotor support is aligned with a screw hole of the casing, a countersunk head screw is driven into the screw hole, and structural glue is used for reinforcing. The spiral glue groove is designed on the casing of the rotor, so that structural glue can be accommodated, and the structural strength of the connection between the rotor and the bracket can be enhanced;
it should be noted that the magnetic shoe is provided with a plurality of pieces, and each magnetic shoe is annularly distributed on the inner side wall of the casing. The clamping ring is provided with a plurality of spacing posts at intervals, and each magnetic shoe is correspondingly embedded between two spacing posts at intervals respectively. Specifically, the magnetic shoe is bonded between the spacing posts of the two compression rings on the inner surface of the rotor shell by using structural glue. The press ring is in interference fit with the shell, is bonded by structural adhesive, and separates the magnetic shoes, so that the magnetic shoes are uniformly distributed on the inner surface of the shell. The front and the rear compression rings are additionally arranged, so that the magnetic shoes can be completely separated. Compare in conventional magnetic shoe groove and support body structure, can avoid because too long and cause the broken tooth condition of processing occasionally at the processing, lead to bad disability rate too high, part cost increases. Conventional support magnetic shoe grooves are removed, machining procedures are reduced, part machining cost is reduced, part machinability is improved, and torsion resistance of the whole rotor is improved.
Referring to fig. 3, the rotor shaft 100 is a hollow shaft, and one end of the rotor shaft is provided with a positioning knurled portion 110, and the other end of the rotor shaft is provided with an avoiding groove 120. Because be used in the helicopter, the mounting means is comparatively special, and the pivot is designed into the quill shaft to require the essence to fix a position, design into about 5 millimeters in both ends for the finish machining with the axle for this reason, the interlude is big clearance fit, so can subtract heavy, can realize again that the axle hole wears the axle, realizes the essence and fixes a position.
Referring to fig. 4, the rotor frame 300 is provided with lightening holes 310 and ventilation holes 320, and the lightening holes and the ventilation holes are spaced apart from each other. The fan is of a plastic fan structure. In order to realize motor lightweight and reduce part cost, the fan and the bracket are separated to be made into two parts, the rotor bracket is made of high-strength aluminum alloy, and the fan is made of plastic, so that the aim of reducing weight can be fulfilled, and the strength of a stress supporting piece can be guaranteed.
Referring to fig. 5, the present invention further provides a brushless motor, which includes the rotor 10 with high reliability and large torque resistance, and further includes a stator assembly 20, a retainer ring 30 and a rear cover 40, wherein the stator assembly is coaxially assembled with the rotor, the retainer ring is disposed on one end of the rotor shaft away from the fan, and the rear cover is mounted on the stator assembly. It should be noted that stator module and the coaxial assembly of rotor subassembly use nut 50 locking to fix to install the steel wire retaining ring additional, the pine takes off when avoiding the nut to lose efficacy and drops, and the stator, rotor subassembly attach together the back, and the lid is locked fixedly after the reassembling, uses screw 60.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A rotor of high reliability high torque resistant construction comprising: a rotor shaft, a fan, a rotor bracket, a machine shell, a magnetic shoe and two pressure rings,
the fan and the rotor support are coaxially assembled at one end of the rotor shaft, the rotor support is arranged on the machine shell in an interference fit mode, the two pressing rings are arranged on the inner side wall of the machine shell, and the magnetic shoe is assembled between the two pressing rings;
the inner side wall of the casing is further provided with a glue hiding groove, the glue hiding groove is coated with structural glue, so that the casing is bonded with the rotor support, and the rotor support is fixed with the casing through screws.
2. The high reliability high torque capacity structural rotor of claim 1, wherein said rotor shaft is connected to said rotor support by interference fit.
3. The rotor of claim 1, wherein the rotor bracket is fixed to the fan by screws.
4. The rotor of claim 1, wherein the rotor frame has a screw hole, the casing has a screw hole, and the screw hole is connected to the screw hole and fixed by a screw.
5. The rotor with high reliability and large torque resistance structure as claimed in claim 1, wherein the magnetic tiles are provided with a plurality of pieces, and each magnetic tile is annularly distributed on the inner side wall of the casing.
6. The rotor with high reliability and a large-torque-resistant structure according to claim 5, wherein a plurality of spacing limiting posts are arranged on the pressure ring, and each magnetic shoe is correspondingly embedded between two spacing limiting posts.
7. The rotor with high reliability and large torque resistance structure as claimed in claim 1, wherein the rotor shaft is a hollow shaft, and one end of the rotor shaft is provided with a positioning knurling part, and the other end of the rotor shaft is provided with a spacing groove.
8. The rotor with high reliability and large torque resistance as claimed in claim 1, wherein the rotor frame is provided with lightening holes and ventilation holes, and the lightening holes and the ventilation holes are spaced apart from each other.
9. The high reliability high torque structural rotor of claim 1, wherein said fan is a plastic fan structure.
10. A brushless motor comprising the rotor of any one of claims 1 to 9, further comprising a stator assembly, a retaining ring, and a rear cover, wherein the stator assembly is coaxially assembled with the rotor, the retaining ring is disposed on an end of the rotor shaft away from the fan, and the rear cover is mounted on the stator assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820497.4U CN218526152U (en) | 2022-10-25 | 2022-10-25 | Rotor and brushless motor of high reliability anti big moment of torsion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222820497.4U CN218526152U (en) | 2022-10-25 | 2022-10-25 | Rotor and brushless motor of high reliability anti big moment of torsion structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218526152U true CN218526152U (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222820497.4U Active CN218526152U (en) | 2022-10-25 | 2022-10-25 | Rotor and brushless motor of high reliability anti big moment of torsion structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218526152U (en) |
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2022
- 2022-10-25 CN CN202222820497.4U patent/CN218526152U/en active Active
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