CN216794726U - Outer rotor magnetic steel fixing structure of permanent magnet motor - Google Patents
Outer rotor magnetic steel fixing structure of permanent magnet motor Download PDFInfo
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- CN216794726U CN216794726U CN202220132499.1U CN202220132499U CN216794726U CN 216794726 U CN216794726 U CN 216794726U CN 202220132499 U CN202220132499 U CN 202220132499U CN 216794726 U CN216794726 U CN 216794726U
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Abstract
The utility model discloses an outer rotor magnetic steel fixing structure of a permanent magnet motor, which comprises a roller and an installation cylinder coaxially arranged in the roller, wherein magnetic steel is magnetically adsorbed on the inner wall of the roller along the axial direction of the roller; a positioning groove is axially formed in the outer cylinder wall of the mounting cylinder to store the pressing strip, the positioning groove corresponds to the clearance between adjacent magnetic steels, and a second positioning bolt in threaded fit with the mounting cylinder can push the pressing strip in the radial direction of the roller; along the circumferential direction of the roller, after the pressing strips reach the gaps between the adjacent magnetic steels, the two adjacent groups of pressing strips clamp one group of magnetic steels; after the mounting cylinder is coaxially fixed in the roller, the second positioning bolt is rotated to push the pressing strip by the second positioning bolt, and the pressing strip can leave the positioning groove and reach the gap between the adjacent magnetic steels; repeating the operation, wherein along the circumferential direction of the roller, two adjacent groups of pressing strips clamp one group of magnetic steel together, and the positioning of the magnetic steel can be completed; the whole installation process is simple, the cost is low, and the weight of the product cannot be greatly increased.
Description
Technical Field
The utility model relates to the field of motor installation, in particular to an outer rotor magnetic steel fixing structure of a permanent magnet motor.
Background
At present, the outer rotor motor is mainly used for a roller motor and a belt pulley motor. The magnetic steel of the outer rotor of the common permanent magnet motor is fixed on the punching sheet, and the punching sheet is fixed with the outer rotor shell.
The magnetic steel is fixed in the above way, so that time and labor are wasted during installation, the production cost is high, and the product weight is heavy, so that the problem needs to be solved urgently.
Disclosure of Invention
In order to avoid and overcome the technical problems in the prior art, the utility model provides an outer rotor magnetic steel fixing structure of a permanent magnet motor. The magnetic steel is convenient to fix, low in production cost and light in product weight.
In order to achieve the purpose, the utility model provides the following technical scheme:
an outer rotor magnetic steel fixing structure of a permanent magnet motor comprises a roller and an installation cylinder coaxially arranged in the roller, wherein magnetic steel is magnetically adsorbed on the inner wall of the roller along the axial direction of the roller; positioning grooves are uniformly formed in the outer cylinder wall of the mounting cylinder along the axial direction to store the pressing strips, the positioning grooves correspond to the gap positions between the adjacent magnetic steels, and a second positioning bolt in threaded fit with the mounting cylinder can push the pressing strips along the radial direction of the roller; when the pressing strips reach the gaps between the adjacent magnetic steels, the two adjacent groups of pressing strips are matched with each other along the circumferential direction of the roller to clamp one group of magnetic steels.
As a further scheme of the utility model: threaded holes are formed in the corresponding positions of the pressing strip and the roller, mounting holes corresponding to the threaded holes of the pressing strip are formed in the wall of the mounting cylinder, the mounting holes are avoided from the positions of the second positioning bolts, and the locking bolts can penetrate through the mounting holes and then are in threaded fit with the pressing strip and the roller so as to lock and fix the pressing strip.
As a still further scheme of the utility model: the cross section of the pressing strip is trapezoidal, so that the cross section of the pressing strip is matched with the cross section of the gap between the adjacent magnetic steels.
As a still further scheme of the utility model: first positioning bolts in threaded fit with the installation cylinder are uniformly arranged on the installation cylinder along the radial direction, each first positioning bolt corresponds to each magnetic steel in position, and the first positioning bolts are abutted to the magnetic steels to lock the magnetic steels.
As a still further scheme of the utility model: and a flexible cushion layer is arranged on the contact surface of the first positioning bolt and the magnetic steel.
Compared with the prior art, the utility model has the beneficial effects that:
1. after the installation cylinder is coaxially fixed in the roller, the second positioning bolt is rotated to push the pressing strip by the second positioning bolt, and the pressing strip can leave the positioning groove and reach the gap between the adjacent magnetic steels; repeating the operation, and clamping a group of magnetic steel by two adjacent groups of pressing bars along the circumferential direction of the roller, so that the positioning of the magnetic steel can be completed; the whole installation process is simple, the cost is low, and the weight of the product cannot be greatly increased.
2. According to the utility model, after the pressing strip is tightly abutted against the magnetic steel, the pressing strip is fixed on the roller through the locking bolt, so that the locking of the pressing strip and the magnetic steel can be completed, the positioning is stable and accurate, and the locking bolt cannot interfere with the second positioning bolt; because the cross-sectional shape of layering is identical with the clearance cross-sectional shape between the adjacent magnet steel, all is isosceles trapezoid, more firm during the butt.
3. When the pressing bar is fixed, the first positioning bolt is abutted against the magnetic steel, so that the magnetic steel is prevented from moving in the installation process, and the installation process is more stable; after the magnetic steel is installed, the first positioning bolt, the second positioning bolt and the installation cylinder are removed, and then the magnetic steel can be fixed; because the contact surface of the first positioning bolt and the magnetic steel is a flexible cushion layer, the magnetic steel cannot be damaged during positioning.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
FIG. 3 is a schematic view of a positioning groove.
In the figure:
1. a drum; 11. magnetic steel;
2. mounting the cylinder; 21. a first positioning bolt; 22. a second positioning bolt;
23. positioning a groove; 24. mounting holes;
3. layering; 31. a threaded bore.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in an embodiment of the present invention, an outer rotor magnetic steel fixing structure of a permanent magnet motor includes a roller 1 and an installation cylinder 2 coaxially disposed in the roller 1, and the roller 1 and the installation cylinder 2 may be respectively fixed by two sets of installation frames to keep the coaxial arrangement of the two.
During installation, the magnetic steel 11 is uniformly arranged on the inner wall of the roller 1 along the axial direction and is magnetically adsorbed on the inner wall of the roller 1.
The outer cylinder wall of the installation cylinder 2 is axially provided with positioning grooves 23, the positioning grooves 23 correspond to the magnetic steels 11 in number, and the positions of the positioning grooves 23 correspond to the gap positions between the adjacent magnetic steels 11.
The material of the bead 3 is preferably an aluminium strip.
The second positioning bolts 22 corresponding to the positioning grooves 23 in number are in threaded fit with the mounting cylinder 2, and the second positioning bolts 22 can be radially inserted into the positioning grooves 23 along the roller 1, push the pressing strips 3 along the radial direction to leave the positioning grooves 23, and finally reach the gaps between the adjacent magnetic steels 11.
Along the axial direction of the roller 1, two adjacent groups of pressing strips 3 are matched to clamp one group of magnetic steel 11, so that the magnetic steel 11 is pre-positioned.
Threaded holes 31 corresponding to the positions are further formed in the pressing strips 3 and the roller 1, and mounting holes 24 corresponding to the threaded holes 31 are formed in the wall of the mounting barrel 2. After the magnetic steel 11 is positioned, an installer operates the locking bolt to pass through the mounting hole 24, and then locks the pressing bar 3 on the roller 1 through the threaded hole 31.
The position of the second positioning bolt 22 and the position of the mounting hole 24 are set back from each other.
The installation cylinder 2 is uniformly provided with first positioning bolts 21 in threaded fit with the installation cylinder 2 along the radial direction, the first positioning bolts 21 correspond to the magnetic steel 11 in position and quantity, and the first positioning bolts 21 are abutted to the magnetic steel 11 after moving along the radial direction, so that the magnetic steel 11 is positioned and locked. In order to prevent the magnetic steel 11 from being damaged, a flexible cushion layer is arranged on the contact surface of the first positioning bolt 21 and the magnetic steel 11, the type of the cushion layer is not limited, and the cushion layer can be made of cloth or a rubber layer.
After all the press strips 3 are installed, the first positioning bolt 21 and the second positioning bolt 22 are withdrawn, the installation cylinder 2 is detached from the roller 1, and the magnetic steel 11 is fixed.
The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.
The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
Claims (5)
1. An outer rotor magnetic steel fixing structure of a permanent magnet motor is characterized by comprising a roller (1) and an installation cylinder (2) coaxially arranged in the roller (1), wherein magnetic steel (11) is magnetically adsorbed on the inner wall of the roller (1) along the axial direction of the roller (1); positioning grooves (23) are uniformly formed in the outer cylinder wall of the mounting cylinder (2) along the axial direction to store the pressing strips (3), the positioning grooves (23) correspond to the gap positions between adjacent magnetic steels (11), and second positioning bolts (22) in threaded fit with the mounting cylinder (2) can push the pressing strips (3) along the radial direction of the roller (1); when the pressing strips (3) reach the gaps between the adjacent magnetic steels (11), the two adjacent groups of pressing strips (3) are matched with each other to clamp one group of magnetic steels (11) along the circumferential direction of the roller (1).
2. The outer rotor magnetic steel fixing structure of the permanent magnet motor is characterized in that threaded holes (31) are formed in corresponding positions of the pressing strip (3) and the roller (1), mounting holes (24) corresponding to the threaded holes (31) of the pressing strip (3) are formed in the wall of the mounting cylinder (2), the mounting holes (24) are arranged in a way of avoiding positions of the second positioning bolts (22), and the locking bolts can penetrate through the mounting holes (24) and then are in threaded fit with the pressing strip (3) and the roller (1) so as to lock and fix the pressing strip (3).
3. An outer rotor magnetic steel fixing structure of a permanent magnet motor according to claim 1 or 2, wherein the cross-sectional shape of the pressing bar (3) is trapezoidal so as to be matched with the cross-sectional shape of the gap between the adjacent magnetic steels (11).
4. The structure of fixing magnetic steel of an external rotor of a permanent magnet motor according to claim 1 or 2, wherein the mounting cylinder (2) is uniformly provided with first positioning bolts (21) which are in threaded fit with the mounting cylinder (2) along a radial direction, each first positioning bolt (21) corresponds to each magnetic steel (11), and the first positioning bolts (21) are abutted to the magnetic steel (11) to lock the magnetic steel (11).
5. The external rotor magnetic steel fixing structure of the permanent magnet motor is characterized in that a flexible cushion layer is arranged on the contact surface of the first positioning bolt (21) and the magnetic steel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220132499.1U CN216794726U (en) | 2022-01-18 | 2022-01-18 | Outer rotor magnetic steel fixing structure of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220132499.1U CN216794726U (en) | 2022-01-18 | 2022-01-18 | Outer rotor magnetic steel fixing structure of permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216794726U true CN216794726U (en) | 2022-06-21 |
Family
ID=82013134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220132499.1U Active CN216794726U (en) | 2022-01-18 | 2022-01-18 | Outer rotor magnetic steel fixing structure of permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216794726U (en) |
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2022
- 2022-01-18 CN CN202220132499.1U patent/CN216794726U/en active Active
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